:root {
  --bg-light: #f2f4f7;
  --text-dark: #0d1325;
  --text-muted: #4f5565;
  --btn-dark: #0d1527;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text-dark);
  background-color: var(--white);
}

.container {
  width: min(1120px, calc(100% - 64px));
  margin: 0 auto;
}

.site-header {
  background-color: var(--white);
  border-bottom: 1px solid rgba(13, 19, 37, 0.06);
}

.nav-wrap {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo {
  width: 100px;
  height: 100px;
  border: 0;
  border-radius: 6px;
  overflow: hidden;
  pointer-events: none;
}

.logo-text {
  color: var(--text-dark);
  font-weight: 800;
  font-size: 34px;
  letter-spacing: 0.02em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-menu a {
  color: #2f3545;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav-menu a:hover {
  color: #0d1325;
}

.nav-menu a.active,
.nav-menu a[aria-current="page"] {
  color: #0d1325;
  font-weight: 700;
  border-bottom-color: #0d1325;
}

.hero {
  background-color: var(--bg-light);
  padding: 72px 0 88px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-copy h1 {
  margin: 0;
  max-width: 560px;
  font-size: clamp(44px, 5vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.hero-copy p {
  margin: 24px 0 0;
  max-width: 600px;
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.7;
}

.cta-btn {
  margin-top: 34px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 18px 24px;
  border-radius: 12px;
  background-color: var(--btn-dark);
  color: var(--white);
  text-decoration: none;
  font-size: 18px;
  font-weight: 600;
  line-height: 1;
}

.hero-image-card {
  border-radius: 10px;
  overflow: hidden;
  background: var(--white);
  box-shadow: 0 10px 24px rgba(9, 15, 33, 0.08);
  min-height: 340px;
}

.hero-image-card img {
  width: 100%;
  height: 100%;
  min-height: 340px;
  object-fit: cover;
  display: block;
}

.about-hero {
  background-color: #f1f3f6;
  padding: 72px 0 84px;
}

.about-hero-inner h1 {
  margin: 0;
  font-size: clamp(42px, 5vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.about-hero-inner p {
  margin: 24px 0 0;
  max-width: 820px;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.75;
}

.products-hero {
  background-color: #f1f3f6;
  padding: 72px 0 84px;
}

.products-hero-inner h1 {
  margin: 0;
  font-size: clamp(42px, 5vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.products-hero-inner p {
  margin: 24px 0 0;
  max-width: 820px;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.75;
}

.product-feature {
  background-color: #f1f3f6;
  padding: 18px 0 72px;
}

.product-feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
  align-items: start;
}

.product-feature-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 18px rgba(10, 16, 32, 0.1);
}

.product-feature-image img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
  display: block;
}

.product-feature-content h2 {
  margin: 0;
  font-size: clamp(36px, 4vw, 50px);
  line-height: 1.15;
}

.product-feature-content > p {
  margin: 14px 0 0;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.75;
}

.product-feature-content h3 {
  margin: 24px 0 0;
  font-size: 30px;
  line-height: 1.3;
}

.grade-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.grade-card {
  background-color: #f4f5f7;
  border: 1px solid #e8eaef;
  border-radius: 2px;
  padding: 12px 12px 10px;
}

.grade-card h4 {
  margin: 0;
  font-size: 20px;
  line-height: 1.3;
}

.grade-card p {
  margin: 4px 0 0;
  color: #5f6676;
  font-size: 15px;
  line-height: 1.5;
}

.product-lubricants {
  background-color: #f1f3f6;
  padding: 8px 0 78px;
}

.lubricants-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
  align-items: start;
}

.lubricants-content h2 {
  margin: 0;
  font-size: clamp(36px, 4vw, 50px);
  line-height: 1.15;
}

.lubricants-content > p {
  margin: 14px 0 0;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.75;
}

.lubricants-content h3 {
  margin: 20px 0 0;
  font-size: 30px;
  line-height: 1.3;
}

.category-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.category-list li {
  border-left: 3px solid #1d2434;
  padding-left: 10px;
}

.category-list li + li {
  margin-top: 10px;
}

.category-list h4 {
  margin: 0;
  font-size: 20px;
  line-height: 1.3;
}

.category-list p {
  margin: 2px 0 0;
  color: #5f6676;
  font-size: 15px;
  line-height: 1.5;
}

.lubricants-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 18px rgba(10, 16, 32, 0.1);
}

.lubricants-image img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
  display: block;
}

.quality-assurance {
  background-color: #f1f3f6;
  padding: 4px 0 84px;
}

.quality-assurance h2 {
  margin: 0;
  text-align: center;
  font-size: clamp(38px, 4vw, 52px);
  line-height: 1.15;
}

.qa-grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.qa-card {
  background-color: #f4f5f7;
  border: 1px solid #e8eaef;
  border-radius: 4px;
  text-align: center;
  padding: 24px 14px 18px;
  min-height: 170px;
}

.qa-card h3 {
  margin: 0;
  font-size: 46px;
  line-height: 1.1;
}

.qa-card h4 {
  margin: 8px 0 0;
  font-size: 20px;
  line-height: 1.3;
  font-weight: 600;
}

.qa-card p {
  margin: 10px 0 0;
  color: #5f6676;
  font-size: 15px;
  line-height: 1.5;
}

.packaging-delivery {
  background-color: #f1f3f6;
  padding: 2px 0 86px;
}

.packaging-delivery h2 {
  margin: 0;
  font-size: clamp(38px, 4vw, 52px);
  line-height: 1.15;
}

.packaging-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
}

.packaging-col h3 {
  margin: 0;
  font-size: 30px;
  line-height: 1.3;
}

.packaging-col p {
  margin: 12px 0 0;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.75;
}

.packaging-col ul {
  margin: 12px 0 0;
  padding-left: 18px;
}

.packaging-col li + li {
  margin-top: 10px;
}

.packaging-col li {
  color: #2b3242;
  font-size: 17px;
}

.about-story {
  background-color: #f1f3f6;
  padding: 26px 0 70px;
}

.about-story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 54px;
  align-items: center;
}

.about-story-image-card {
  border-radius: 8px;
  overflow: hidden;
  background: #ffffff;
  box-shadow: 0 8px 18px rgba(10, 16, 32, 0.1);
}

.about-story-image-card img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
  display: block;
}

.about-story-content h2 {
  margin: 0;
  font-size: clamp(36px, 4vw, 50px);
  line-height: 1.15;
}

.about-story-content p {
  margin: 18px 0 0;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.75;
}

.story-points {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.story-points li {
  position: relative;
  margin-top: 12px;
  padding-left: 32px;
  font-size: 17px;
  font-weight: 500;
  color: #2a3141;
}

.story-points li::before {
  content: "";
  position: absolute;
  top: 2px;
  left: 0;
  width: 20px;
  height: 20px;
  background-repeat: no-repeat;
  background-size: 20px 20px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23171d2c' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M8.2 12.2l2.5 2.5 5.1-5.1'/%3E%3C/svg%3E");
}

.about-values {
  background-color: #f1f3f6;
  padding: 18px 0 72px;
}

.about-values h2 {
  margin: 0;
  text-align: center;
  font-size: clamp(38px, 4vw, 52px);
  line-height: 1.15;
}

.values-grid {
  margin-top: 38px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.value-card {
  background-color: #f4f5f7;
  border: 1px solid #e8eaef;
  border-radius: 4px;
  padding: 28px 28px 24px;
  min-height: 220px;
}

.value-card h3 {
  margin: 0;
  font-size: 36px;
  line-height: 1.2;
}

.value-card p {
  margin: 14px 0 0;
  color: #565d6d;
  font-size: 17px;
  line-height: 1.75;
}

.about-reach {
  background-color: #f1f3f6;
  padding: 8px 0 72px;
}

.about-reach h2 {
  margin: 0;
  text-align: center;
  font-size: clamp(38px, 4vw, 52px);
  line-height: 1.15;
}

.reach-grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: stretch;
}

.reach-image-card {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 18px rgba(10, 16, 32, 0.08);
}

.reach-image-card img {
  width: 100%;
  height: 100%;
  min-height: 340px;
  object-fit: cover;
  display: block;
}

.reach-left h3,
.reach-right h3 {
  margin: 20px 0 0;
  font-size: 35px;
  line-height: 1.2;
}

.reach-left p {
  margin: 14px 0 0;
  color: #565d6d;
  font-size: 17px;
  line-height: 1.75;
  max-width: 620px;
}

.reach-right {
  background-color: #f4f5f7;
  border: 1px solid #e8eaef;
  border-radius: 4px;
  padding: 24px 28px;
}

.reach-right h3 {
  margin-top: 0;
}

.reach-right ul {
  margin: 16px 0 0;
  padding-left: 18px;
}

.reach-right li + li {
  margin-top: 10px;
}

.reach-right li {
  font-size: 17px;
  color: #2b3242;
}

.why-choose {
  background-color: #f5f6f8;
  padding: 72px 0 64px;
  text-align: center;
}

.why-choose h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.why-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 36px;
}

.why-card {
  max-width: 320px;
  margin: 0 auto;
}

.why-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: #171d2c;
}

.why-icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.why-card h3 {
  margin: 18px 0 10px;
  font-size: 34px;
  line-height: 1.2;
}

.why-card p {
  margin: 0;
  color: #565d6d;
  font-size: 17px;
  line-height: 1.7;
}

.core-products {
  background-color: #f1f3f6;
  padding: 56px 0 62px;
}

.core-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
}

.core-image-card {
  border-radius: 6px;
  overflow: hidden;
  background-color: #fff;
  box-shadow: 0 8px 16px rgba(10, 16, 32, 0.08);
}

.core-image-card img {
  width: 100%;
  height: 100%;
  min-height: 286px;
  object-fit: cover;
  display: block;
}

.core-content h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.15;
}

.core-list {
  margin: 18px 0 0;
  padding-left: 18px;
}

.core-list li + li {
  margin-top: 12px;
}

.core-list h3 {
  margin: 0;
  font-size: 30px;
  line-height: 1.35;
}

.core-list p {
  margin: 2px 0 0;
  color: #565d6d;
  font-size: 17px;
  line-height: 1.65;
}

.core-cta {
  margin-top: 24px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background-color: var(--btn-dark);
  color: var(--white);
  text-decoration: none;
  border-radius: 8px;
  padding: 14px 20px;
  font-weight: 600;
  font-size: 16px;
}

.services-section {
  background-color: #ffffff;
  padding: 68px 0 84px;
}

.services-header h2 {
  margin: 0;
  font-size: clamp(36px, 4vw, 50px);
  line-height: 1.15;
}

.services-header p {
  margin: 18px 0 0;
  max-width: 760px;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.65;
}

.service-detail {
  background-color: #ffffff;
  padding: 0 0 86px;
}

.service-detail h2 {
  margin: 0;
  text-align: center;
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.2;
}

.service-detail-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
  align-items: center;
}

.service-detail-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 18px rgba(10, 16, 32, 0.1);
}

.service-detail-image img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  display: block;
}

.service-detail-content > p {
  margin: 0;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.75;
}

.service-points {
  margin-top: 26px;
  display: grid;
  gap: 18px;
}

.service-point {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.service-point-icon {
  width: 20px;
  height: 20px;
  color: #11182a;
  margin-top: 2px;
  flex: 0 0 auto;
}

.service-point-icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-point h3 {
  margin: 0;
  font-size: 31px;
  line-height: 1.25;
}

.service-point p {
  margin: 6px 0 0;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.65;
}

.service-support {
  background-color: #ffffff;
  padding: 0 0 86px;
}

.service-support-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
  align-items: center;
}

.service-support-content {
  display: grid;
  gap: 22px;
}

.service-support-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.service-support-icon {
  width: 20px;
  height: 20px;
  color: #11182a;
  margin-top: 2px;
  flex: 0 0 auto;
}

.service-support-icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-support-item h3 {
  margin: 0;
  font-size: 31px;
  line-height: 1.25;
}

.service-support-item p {
  margin: 6px 0 0;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.65;
}

.service-support-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 18px rgba(10, 16, 32, 0.1);
}

.service-support-image img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
  display: block;
}

.service-model {
  background-color: #ffffff;
  padding: 0 0 88px;
}

.service-model h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.2;
}

.service-model-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.service-model-card {
  background-color: #ffffff;
  border: 1px solid #eceff3;
  border-radius: 8px;
  padding: 22px 22px 20px;
  min-height: 236px;
}

.service-model-number {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background-color: #08152b;
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  line-height: 1;
}

.service-model-card h3 {
  margin: 16px 0 0;
  font-size: 31px;
  line-height: 1.25;
}

.service-model-card p {
  margin: 12px 0 0;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.65;
}

.service-partner {
  background-color: #ffffff;
  padding: 0 0 90px;
}

.service-partner h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.2;
}

.service-partner-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px 34px;
}

.service-partner-item h3 {
  margin: 0;
  font-size: 31px;
  line-height: 1.25;
}

.service-partner-item p {
  margin: 10px 0 0;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.65;
}

.service-cta {
  background-color: #ffffff;
  padding: 0 0 82px;
}

.service-cta-inner {
  text-align: center;
}

.service-cta-inner h2 {
  margin: 0;
  font-size: clamp(36px, 4.2vw, 52px);
  line-height: 1.2;
}

.service-cta-inner p {
  margin: 18px auto 0;
  max-width: 760px;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.7;
}

.service-cta-btn {
  margin-top: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 140px;
  padding: 14px 22px;
  border-radius: 8px;
  background-color: #08152b;
  color: #ffffff;
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
}

.contact-section {
  background-color: #ffffff;
  padding: 68px 0 86px;
}

.contact-header h1 {
  margin: 0;
  font-size: clamp(38px, 4.2vw, 54px);
  line-height: 1.2;
}

.contact-header p {
  margin: 18px 0 0;
  max-width: 760px;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.7;
}

.contact-info-grid {
  margin-top: 54px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.contact-info-item {
  text-align: center;
  background-color: #ffffff;
  border: 1px solid #eceff3;
  border-radius: 8px;
  padding: 28px 20px 22px;
}

.contact-info-icon {
  width: 30px;
  height: 30px;
  color: #08152b;
  display: inline-flex;
}

.contact-info-icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contact-info-item h2 {
  margin: 12px 0 0;
  font-size: 31px;
  line-height: 1.2;
}

.contact-info-item p {
  margin: 10px 0 0;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.5;
}

.contact-message {
  background-color: #ffffff;
  padding: 0 0 90px;
}

.contact-message-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
  align-items: start;
}

.contact-message-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 18px rgba(10, 16, 32, 0.1);
}

.contact-message-image img {
  width: 100%;
  height: 100%;
  min-height: 340px;
  object-fit: cover;
  display: block;
}

.contact-form-wrap h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 46px);
  line-height: 1.2;
}

.contact-form {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.contact-form label {
  font-size: 14px;
  font-weight: 600;
  color: #1e2536;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid #e6e9ef;
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 16px;
  font-family: inherit;
  color: #1c2333;
  background-color: #ffffff;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: #9aa2b2;
}

.contact-form textarea {
  resize: vertical;
  min-height: 110px;
}

.contact-form button {
  margin-top: 8px;
  border: 0;
  border-radius: 8px;
  background-color: #08152b;
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 22px;
  cursor: pointer;
}

.business-hours {
  background-color: #ffffff;
  padding: 0 0 86px;
}

.business-hours h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.2;
}

.business-hours-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.hours-card {
  background-color: #ffffff;
  border: 1px solid #eceff3;
  border-radius: 8px;
  padding: 22px 22px 20px;
}

.hours-card h3 {
  margin: 0;
  font-size: 31px;
  line-height: 1.2;
}

.hours-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.hours-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.hours-list li + li {
  margin-top: 10px;
}

.hours-list span {
  color: #4f5565;
  font-size: 17px;
}

.hours-list strong {
  color: #0d1325;
  font-size: 17px;
  font-weight: 700;
}

.hours-card p {
  margin: 10px 0 0;
  color: #4f5565;
  font-size: 17px;
  line-height: 1.65;
  max-width: 520px;
}

.hours-urgent-btn {
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 132px;
  padding: 12px 18px;
  border-radius: 8px;
  background-color: #08152b;
  color: #ffffff;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
}

.site-footer {
  background: #070f24;
  color: #9ca6bf;
  padding: 66px 0 34px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 56px;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(183, 195, 220, 0.14);
}

.footer-about h2 {
  margin: 0;
  color: #ffffff;
  font-size: 35px;
  line-height: 1.2;
}

.footer-about p {
  margin: 18px 0 0;
  max-width: 540px;
  font-size: 17px;
  line-height: 1.75;
}

.footer-links h3 {
  margin: 0;
  color: #ffffff;
  font-size: 26px;
  line-height: 1.3;
}

.footer-links ul {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.footer-links li + li {
  margin-top: 12px;
}

.footer-links a {
  color: #aeb8ce;
  text-decoration: none;
  font-size: 17px;
}

.footer-bottom {
  padding-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-bottom p {
  margin: 0;
  font-size: 15px;
}

.footer-legal {
  display: flex;
  align-items: center;
  gap: 20px;
}

.footer-legal a {
  color: #b8c1d6;
  text-decoration: none;
  font-size: 15px;
}

@media (max-width: 1024px) {
  .brand-logo {
    width: 52px;
    height: 52px;
  }

  .logo-text {
    font-size: 28px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .hero {
    padding: 48px 0 64px;
  }

  .hero-copy h1 {
    max-width: 100%;
    font-size: clamp(34px, 7vw, 56px);
  }

  .hero-copy p {
    max-width: 100%;
    font-size: clamp(16px, 2.8vw, 18px);
    line-height: 1.65;
  }

  .cta-btn {
    font-size: clamp(15px, 2.8vw, 18px);
    padding: 16px 24px;
  }

  .why-choose {
    padding: 56px 0;
  }

  .about-hero {
    padding: 54px 0 62px;
  }

  .about-hero-inner h1 {
    font-size: clamp(32px, 7vw, 48px);
  }

  .about-hero-inner p {
    max-width: 100%;
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .products-hero {
    padding: 54px 0 62px;
  }

  .products-hero-inner h1 {
    font-size: clamp(32px, 7vw, 48px);
  }

  .products-hero-inner p {
    max-width: 100%;
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .product-feature {
    padding: 10px 0 56px;
  }

  .product-feature-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .product-feature-image img {
    min-height: 260px;
  }

  .product-feature-content h2 {
    font-size: clamp(30px, 6vw, 42px);
  }

  .product-feature-content > p {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .product-feature-content h3 {
    font-size: clamp(22px, 4.5vw, 28px);
  }

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

  .grade-card h4 {
    font-size: clamp(18px, 3.8vw, 20px);
  }

  .grade-card p {
    font-size: clamp(14px, 2.8vw, 15px);
  }

  .product-lubricants {
    padding: 4px 0 56px;
  }

  .lubricants-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .lubricants-content h2 {
    font-size: clamp(30px, 6vw, 42px);
  }

  .lubricants-content > p {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .lubricants-content h3 {
    font-size: clamp(22px, 4.5vw, 28px);
  }

  .category-list h4 {
    font-size: clamp(18px, 3.8vw, 20px);
  }

  .category-list p {
    font-size: clamp(14px, 2.8vw, 15px);
  }

  .lubricants-image img {
    min-height: 260px;
  }

  .quality-assurance {
    padding: 0 0 56px;
  }

  .quality-assurance h2 {
    font-size: clamp(30px, 6vw, 44px);
  }

  .qa-grid {
    margin-top: 22px;
    grid-template-columns: 1fr 1fr;
  }

  .qa-card {
    min-height: 150px;
    padding: 20px 12px 16px;
  }

  .qa-card h3 {
    font-size: clamp(34px, 6vw, 42px);
  }

  .qa-card h4 {
    font-size: clamp(17px, 3.8vw, 19px);
  }

  .qa-card p {
    font-size: clamp(14px, 2.8vw, 15px);
  }

  .packaging-delivery {
    padding: 0 0 56px;
  }

  .packaging-delivery h2 {
    font-size: clamp(30px, 6vw, 44px);
  }

  .packaging-grid {
    margin-top: 18px;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .packaging-col h3 {
    font-size: clamp(22px, 4.5vw, 28px);
  }

  .packaging-col p,
  .packaging-col li {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .about-story {
    padding: 12px 0 56px;
  }

  .about-story-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .about-story-image-card img {
    min-height: 280px;
  }

  .about-story-content h2 {
    font-size: clamp(30px, 6vw, 42px);
  }

  .about-story-content p,
  .story-points li {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .about-values {
    padding: 12px 0 56px;
  }

  .about-values h2 {
    font-size: clamp(30px, 6vw, 44px);
  }

  .values-grid {
    margin-top: 28px;
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .value-card {
    min-height: auto;
    padding: 22px;
  }

  .value-card h3 {
    font-size: clamp(24px, 4.5vw, 30px);
  }

  .value-card p {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .about-reach {
    padding: 4px 0 56px;
  }

  .about-reach h2 {
    font-size: clamp(30px, 6vw, 44px);
  }

  .reach-grid {
    margin-top: 24px;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .reach-image-card img {
    min-height: 260px;
  }

  .reach-left h3,
  .reach-right h3 {
    font-size: clamp(24px, 4.5vw, 32px);
  }

  .reach-left p,
  .reach-right li {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .why-grid {
    margin-top: 40px;
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .why-card {
    max-width: 560px;
  }

  .why-card h3 {
    font-size: clamp(24px, 4vw, 30px);
  }

  .why-card p {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .core-products {
    padding: 48px 0 56px;
  }

  .core-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .core-content h2 {
    font-size: clamp(30px, 6vw, 42px);
  }

  .core-list h3 {
    font-size: clamp(22px, 4vw, 28px);
  }

  .core-list p {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .services-section {
    padding: 50px 0 58px;
  }

  .services-header h2 {
    font-size: clamp(30px, 6vw, 42px);
  }

  .services-header p {
    max-width: 100%;
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .service-detail {
    padding: 0 0 58px;
  }

  .service-detail h2 {
    font-size: clamp(30px, 6vw, 42px);
    text-align: left;
  }

  .service-detail-grid {
    margin-top: 24px;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .service-detail-image img {
    min-height: 260px;
  }

  .service-detail-content > p,
  .service-point p {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .service-point h3 {
    font-size: clamp(22px, 4.5vw, 30px);
  }

  .service-support {
    padding: 0 0 58px;
  }

  .service-support-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .service-support-item h3 {
    font-size: clamp(22px, 4.5vw, 30px);
  }

  .service-support-item p {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .service-support-image img {
    min-height: 230px;
  }

  .service-model {
    padding: 0 0 58px;
  }

  .service-model h2 {
    font-size: clamp(30px, 6vw, 42px);
  }

  .service-model-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }

  .service-model-card {
    min-height: auto;
    padding: 20px 18px 18px;
  }

  .service-model-card h3 {
    font-size: clamp(22px, 4.5vw, 30px);
  }

  .service-model-card p {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .service-partner {
    padding: 0 0 58px;
  }

  .service-partner h2 {
    font-size: clamp(30px, 6vw, 42px);
  }

  .service-partner-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .service-partner-item h3 {
    font-size: clamp(22px, 4.5vw, 30px);
  }

  .service-partner-item p {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .service-cta {
    padding: 0 0 56px;
  }

  .service-cta-inner h2 {
    font-size: clamp(30px, 6vw, 44px);
  }

  .service-cta-inner p {
    max-width: 100%;
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .contact-section {
    padding: 54px 0 58px;
  }

  .contact-header h1 {
    font-size: clamp(32px, 7vw, 48px);
  }

  .contact-header p {
    max-width: 100%;
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .contact-info-grid {
    margin-top: 34px;
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .contact-info-item h2 {
    font-size: clamp(22px, 4.5vw, 30px);
  }

  .contact-info-item p {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .contact-message {
    padding: 0 0 58px;
  }

  .contact-message-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .contact-message-image img {
    min-height: 240px;
  }

  .contact-form-wrap h2 {
    font-size: clamp(30px, 6vw, 42px);
  }

  .business-hours {
    padding: 0 0 58px;
  }

  .business-hours h2 {
    font-size: clamp(30px, 6vw, 42px);
  }

  .business-hours-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .hours-card h3 {
    font-size: clamp(22px, 4.5vw, 30px);
  }

  .hours-list span,
  .hours-list strong,
  .hours-card p {
    font-size: clamp(15px, 2.8vw, 17px);
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 34px;
  }

  .footer-about {
    grid-column: 1 / -1;
  }

  .footer-about h2 {
    font-size: clamp(28px, 5vw, 34px);
  }

  .footer-about p,
  .footer-links a {
    font-size: 16px;
  }

  .footer-links h3 {
    font-size: clamp(20px, 3.5vw, 24px);
  }
}

@media (max-width: 720px) {
  .container {
    width: min(1120px, calc(100% - 36px));
  }

  .nav-wrap {
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 16px 0;
  }

  .nav-menu {
    gap: 16px;
    flex-wrap: wrap;
  }

  .service-model-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-top {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}