:root {
  --ink: #121510;
  --muted: #667064;
  --paper: #f6f1e8;
  --panel: #fffaf0;
  --line: rgba(18, 21, 16, 0.13);
  --green: #536b38;
  --green-deep: #25351f;
  --orange: #d86f2d;
  --gold: #d5af62;
  --shadow: 0 24px 80px rgba(33, 39, 27, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  background:
    radial-gradient(circle at top left, rgba(216, 111, 45, 0.18), transparent 34rem),
    linear-gradient(120deg, #f9f3e6 0%, #ebe2d3 48%, #dfe7d6 100%);
}

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

.site-header {
  min-height: 100vh;
  padding: 24px clamp(18px, 4vw, 56px) 56px;
  position: relative;
  overflow: hidden;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 12% -8% auto auto;
  width: 42vw;
  height: 42vw;
  min-width: 360px;
  min-height: 360px;
  border-radius: 50%;
  border: 28px solid rgba(37, 53, 31, 0.08);
  box-shadow: inset 0 0 0 26px rgba(216, 111, 45, 0.07);
  pointer-events: none;
}

.nav {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: inline-block;
  background:
    radial-gradient(circle, transparent 35%, var(--green-deep) 36% 48%, transparent 49%),
    conic-gradient(from 20deg, var(--orange), var(--gold), var(--green), var(--orange));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 250, 240, 0.72);
  backdrop-filter: blur(16px);
}

.nav-links a {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--green-deep);
  font-size: 14px;
}

.nav-links a:hover {
  background: var(--green-deep);
  color: #fff8ea;
}

.menu-toggle {
  display: none;
}

.hero {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: clamp(30px, 6vw, 86px);
  align-items: center;
  padding-top: clamp(78px, 12vw, 150px);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--orange);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 980px;
  margin-bottom: 26px;
  font-size: clamp(46px, 8vw, 104px);
  line-height: 0.9;
  letter-spacing: -0.07em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(34px, 5vw, 66px);
  line-height: 0.95;
  letter-spacing: -0.055em;
}

h3 {
  margin-bottom: 10px;
  font-size: 24px;
  letter-spacing: -0.025em;
}

.hero-text,
.section-heading p,
.rfq-card p,
.advantage-list p,
.category-grid p {
  color: var(--muted);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  line-height: 1.7;
}

.hero-text {
  max-width: 700px;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 20px;
  border: 1px solid var(--green-deep);
  border-radius: 999px;
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-weight: 800;
  cursor: pointer;
}

.button.primary {
  background: var(--green-deep);
  color: #fff8ea;
}

.button.secondary {
  background: rgba(255, 250, 240, 0.7);
  color: var(--green-deep);
}

.hero-panel {
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 36px;
  background:
    linear-gradient(160deg, rgba(255, 250, 240, 0.9), rgba(37, 53, 31, 0.1)),
    repeating-linear-gradient(135deg, rgba(37, 53, 31, 0.06) 0 1px, transparent 1px 18px);
  box-shadow: var(--shadow);
}

.tire-visual {
  width: min(100%, 390px);
  aspect-ratio: 1;
  margin: 0 auto 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle, #efe4d2 0 24%, transparent 25%),
    repeating-conic-gradient(from 8deg, #172115 0 4deg, #2f3d2a 4deg 9deg),
    radial-gradient(circle, #151a13, #30372a 72%);
  box-shadow: inset 0 0 0 22px rgba(255, 255, 255, 0.08), 0 30px 70px rgba(18, 21, 16, 0.25);
  animation: riseIn 900ms ease both;
}

.tire-visual span {
  width: 38%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(from 20deg, var(--gold), #f8ecd6, var(--orange), var(--gold));
  box-shadow: inset 0 0 0 20px #f6f1e8;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.stats-grid div {
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 250, 240, 0.76);
}

.stats-grid strong {
  display: block;
  font-size: 24px;
}

.stats-grid span {
  color: var(--muted);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-size: 13px;
}

.section {
  padding: 86px clamp(18px, 4vw, 56px);
}

.section-heading {
  max-width: 900px;
  margin-bottom: 34px;
}

.section-heading.split {
  display: grid;
  grid-template-columns: 1fr minmax(260px, 460px);
  gap: 28px;
  max-width: none;
  align-items: end;
}

.category-grid,
.advantage-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.category-grid article,
.advantage-list article,
.pattern-card,
.rfq-card {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255, 250, 240, 0.76);
  box-shadow: 0 14px 44px rgba(37, 53, 31, 0.08);
}

.category-grid article,
.advantage-list article {
  padding: 24px;
}

.category-grid span {
  display: inline-flex;
  margin-bottom: 22px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--green-deep);
  color: #fff8ea;
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-size: 12px;
  font-weight: 800;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(260px, 420px) 1fr;
  gap: 18px;
  align-items: end;
  margin-bottom: 24px;
}

.catalog-tabs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin: 0 0 22px;
}

.catalog-tab {
  min-height: 86px;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 14px;
  text-align: left;
  color: var(--green-deep);
  background: rgba(255, 250, 240, 0.68);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  cursor: pointer;
}

.catalog-tab strong,
.catalog-tab span {
  display: block;
}

.catalog-tab strong {
  margin-bottom: 8px;
  font-size: 18px;
}

.catalog-tab span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.catalog-tab.active,
.catalog-tab:hover {
  background: var(--green-deep);
  color: #fff8ea;
}

.catalog-tab.active span,
.catalog-tab:hover span {
  color: rgba(255, 248, 234, 0.76);
}

.search-box {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-size: 13px;
  font-weight: 800;
}

.search-box input,
.rfq-form input,
.rfq-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 15px 16px;
  color: var(--ink);
  background: rgba(255, 250, 240, 0.86);
  font: 16px "Trebuchet MS", Verdana, sans-serif;
  outline: none;
}

.search-box input:focus,
.rfq-form input:focus,
.rfq-form textarea:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(216, 111, 45, 0.12);
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.filter {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 11px 14px;
  color: var(--green-deep);
  background: rgba(255, 250, 240, 0.7);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-weight: 800;
  cursor: pointer;
}

.filter.active,
.filter:hover {
  background: var(--orange);
  border-color: var(--orange);
  color: #fff8ea;
}

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

.pattern-card {
  position: relative;
  min-height: 340px;
  padding: 24px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  isolation: isolate;
}

.pattern-image {
  height: 170px;
  margin: -6px -6px 18px;
  border-radius: 22px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 28% 24%, rgba(255, 255, 255, 0.72), transparent 28%),
    linear-gradient(145deg, rgba(37, 53, 31, 0.12), rgba(216, 111, 45, 0.12));
}

.pattern-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 14px;
  mix-blend-mode: multiply;
}

.pattern-image.empty span {
  max-width: 80%;
  color: rgba(37, 53, 31, 0.55);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-align: center;
  text-transform: uppercase;
}

.pattern-card::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 220px;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 24px solid rgba(37, 53, 31, 0.08);
  z-index: -1;
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 22px;
}

.badge {
  display: inline-flex;
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(83, 107, 56, 0.13);
  color: var(--green-deep);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-size: 12px;
  font-weight: 900;
}

.pattern-card h3 {
  font-size: 32px;
}

.meta-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: auto 0 22px;
}

.meta-row div {
  padding: 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.45);
}

.meta-row strong,
.meta-row span {
  display: block;
}

.meta-row strong {
  font-size: 18px;
}

.meta-row span,
.sample-sizes,
.card-desc {
  color: var(--muted);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-size: 13px;
  line-height: 1.55;
}

.card-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.small-button {
  border: 1px solid var(--green-deep);
  border-radius: 999px;
  padding: 10px 13px;
  background: var(--green-deep);
  color: #fff8ea;
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-weight: 800;
  cursor: pointer;
}

.small-button.light {
  background: transparent;
  color: var(--green-deep);
}

.rfq-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 30px;
  padding: clamp(24px, 5vw, 54px);
  background:
    linear-gradient(135deg, rgba(37, 53, 31, 0.95), rgba(83, 107, 56, 0.88)),
    repeating-linear-gradient(45deg, transparent 0 10px, rgba(255, 255, 255, 0.04) 10px 11px);
  color: #fff8ea;
}

.rfq-card p {
  color: rgba(255, 248, 234, 0.76);
}

.rfq-form {
  display: grid;
  gap: 12px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px clamp(18px, 4vw, 56px);
  color: var(--muted);
  font-family: "Trebuchet MS", Verdana, sans-serif;
  border-top: 1px solid var(--line);
}

.pattern-dialog {
  width: min(900px, calc(100vw - 28px));
  border: 0;
  border-radius: 30px;
  padding: 28px;
  color: var(--ink);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.pattern-dialog::backdrop {
  background: rgba(18, 21, 16, 0.5);
}

.dialog-close {
  float: right;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 12px;
  background: #fff8ea;
  cursor: pointer;
}

.dialog-image {
  min-height: 240px;
  margin: 12px 0 20px;
  border: 1px solid var(--line);
  border-radius: 24px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.4);
}

.dialog-image img {
  max-width: 100%;
  max-height: 360px;
  object-fit: contain;
  padding: 18px;
}

.dialog-image.empty {
  color: var(--muted);
  font-family: "Trebuchet MS", Verdana, sans-serif;
}

.size-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 18px;
  font-family: "Trebuchet MS", Verdana, sans-serif;
  font-size: 14px;
}

.size-table th,
.size-table td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.size-table th {
  color: var(--green-deep);
}

@keyframes riseIn {
  from {
    transform: translateY(26px) rotate(-8deg);
    opacity: 0;
  }
  to {
    transform: translateY(0) rotate(0);
    opacity: 1;
  }
}

@media (max-width: 1040px) {
  .hero,
  .section-heading.split,
  .rfq-card,
  .toolbar {
    grid-template-columns: 1fr;
  }

  .filter-pills {
    justify-content: flex-start;
  }

  .category-grid,
  .advantage-list,
  .catalog-grid,
  .catalog-tabs {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .nav {
    align-items: flex-start;
  }

  .menu-toggle {
    display: inline-flex;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 10px 13px;
    background: rgba(255, 250, 240, 0.8);
    font-weight: 800;
  }

  .nav-links {
    position: absolute;
    top: 58px;
    right: 0;
    display: none;
    width: min(260px, 90vw);
    border-radius: 22px;
    flex-direction: column;
    align-items: stretch;
  }

  .nav-links.open {
    display: flex;
  }

  .category-grid,
  .advantage-list,
  .catalog-grid,
  .stats-grid,
  .catalog-tabs {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 70px;
  }

  .section {
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .footer {
    flex-direction: column;
  }
}