:root {
  --blue: #0b2f4f;
  --blue-2: #16466f;
  --blue-3: #e8f0f7;
  --orange: #f47b20;
  --orange-dark: #c95b08;
  --ink: #172433;
  --muted: #5b6a7a;
  --line: #dce5ee;
  --soft: #f5f8fb;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(11, 47, 79, 0.12);
  font-family: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

img,
svg {
  max-width: 100%;
}

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

p {
  margin: 0;
}

.top-strip {
  background: var(--blue);
  color: rgba(255, 255, 255, 0.9);
  font-size: 13px;
}

.top-strip .inner,
.nav-inner,
.section-inner,
.footer-inner {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.top-strip .inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 8px 0;
}

.top-strip a:hover {
  color: var(--white);
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 230px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: var(--white);
  background: var(--blue);
  border-radius: 8px;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-text strong {
  display: block;
  color: var(--blue);
  font-size: 16px;
  line-height: 1.25;
}

.brand-text span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.3;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #26394b;
  font-size: 14px;
  font-weight: 700;
}

.nav-links a {
  padding: 26px 0;
  border-bottom: 3px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--orange-dark);
  border-bottom-color: var(--orange);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  background: #eef4f9;
  border: 1px solid #cbd9e6;
  border-radius: 8px;
}

.language-switch button {
  min-width: 44px;
  min-height: 34px;
  padding: 6px 10px;
  border: 0;
  border-radius: 6px;
  color: var(--blue);
  background: transparent;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
}

.language-switch button.active {
  color: #ffffff;
  background: var(--blue);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 8px;
  color: var(--blue);
  font-size: 22px;
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 18px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: var(--white);
  background: var(--orange);
  box-shadow: 0 10px 24px rgba(244, 123, 32, 0.24);
}

.btn-primary:hover {
  background: var(--orange-dark);
}

.btn-outline {
  color: var(--blue);
  background: var(--white);
  border-color: #b9c8d6;
}

.btn-outline:hover {
  border-color: var(--blue);
  box-shadow: 0 8px 20px rgba(11, 47, 79, 0.1);
}

.btn-whatsapp {
  color: #ffffff;
  background: #138c54;
}

.hero {
  background: linear-gradient(180deg, #ffffff 0%, #f6f9fc 100%);
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(330px, 0.92fr);
  gap: 52px;
  align-items: center;
  min-height: 630px;
  padding: 58px 0 50px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--orange-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--orange);
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--blue);
  line-height: 1.13;
  letter-spacing: 0;
}

h1 {
  max-width: 780px;
  font-size: clamp(38px, 7vw, 68px);
}

h2 {
  font-size: clamp(28px, 4vw, 44px);
}

h3 {
  font-size: 21px;
}

.hero-copy {
  max-width: 680px;
  margin-top: 20px;
  color: #455769;
  font-size: 18px;
}

.hero-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.proof-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 36px;
  max-width: 680px;
}

.proof-item {
  padding: 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.proof-item strong {
  display: block;
  color: var(--blue);
  font-size: 15px;
}

.proof-item span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.bearing-stage {
  position: relative;
  min-height: 470px;
  overflow: hidden;
  background: #eef4f9;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.photo-frame {
  position: relative;
  overflow: hidden;
  min-height: 470px;
  background: #eef4f9;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.photo-frame img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: inherit;
  object-fit: cover;
}

.photo-frame.hero-photo img {
  object-position: center right;
}

.photo-frame.section-photo {
  min-height: 360px;
}

.photo-frame.section-photo img {
  object-position: center;
}

.photo-frame.product-detail-photo {
  min-height: 520px;
}

.photo-frame .visual-caption {
  z-index: 2;
}

.bearing-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(11, 47, 79, 0.07) 1px, transparent 1px),
    linear-gradient(rgba(11, 47, 79, 0.07) 1px, transparent 1px);
  background-size: 42px 42px;
}

.bearing-visual {
  position: absolute;
  inset: 52px 34px 88px;
}

.outer-ring,
.inner-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.outer-ring {
  width: min(330px, 72vw);
  height: min(330px, 72vw);
  border: 44px solid #1b557f;
  box-shadow: inset 0 0 0 7px rgba(255, 255, 255, 0.4), 0 18px 32px rgba(11, 47, 79, 0.2);
}

.inner-ring {
  width: min(150px, 34vw);
  height: min(150px, 34vw);
  border: 22px solid #f7fbff;
  box-shadow: 0 0 0 9px #7894aa, inset 0 0 0 8px #cdd9e3;
}

.roller {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 30px;
  height: 72px;
  margin: -36px 0 0 -15px;
  border-radius: 8px;
  background: linear-gradient(90deg, #dde8f0, #ffffff 45%, #a7bbc9);
  box-shadow: 0 6px 12px rgba(11, 47, 79, 0.18);
  transform-origin: 15px 0;
}

.roller:nth-child(1) { transform: rotate(0deg) translateY(-125px); }
.roller:nth-child(2) { transform: rotate(30deg) translateY(-125px); }
.roller:nth-child(3) { transform: rotate(60deg) translateY(-125px); }
.roller:nth-child(4) { transform: rotate(90deg) translateY(-125px); }
.roller:nth-child(5) { transform: rotate(120deg) translateY(-125px); }
.roller:nth-child(6) { transform: rotate(150deg) translateY(-125px); }
.roller:nth-child(7) { transform: rotate(180deg) translateY(-125px); }
.roller:nth-child(8) { transform: rotate(210deg) translateY(-125px); }
.roller:nth-child(9) { transform: rotate(240deg) translateY(-125px); }
.roller:nth-child(10) { transform: rotate(270deg) translateY(-125px); }
.roller:nth-child(11) { transform: rotate(300deg) translateY(-125px); }
.roller:nth-child(12) { transform: rotate(330deg) translateY(-125px); }

.visual-caption {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 22px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px;
  color: var(--blue);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
}

.section {
  padding: 82px 0;
}

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

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 34px;
}

.section-head p {
  max-width: 560px;
  color: var(--muted);
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 18px;
}

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

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.stat,
.form-panel,
.detail-panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.card {
  padding: 24px;
}

.card p,
.detail-panel p {
  color: var(--muted);
}

.card .tag-list {
  margin-top: 18px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 5px 10px;
  color: var(--blue);
  background: var(--blue-3);
  border: 1px solid #cddbe8;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
}

.tag.orange {
  color: #8c3d00;
  background: #fff0e5;
  border-color: #ffd5b3;
}

.product-card {
  display: flex;
  flex-direction: column;
  min-height: 272px;
}

.product-card .model-line {
  margin: 14px 0 18px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
}

.product-card .btn {
  margin-top: auto;
  align-self: flex-start;
}

.advantage-list {
  display: grid;
  gap: 14px;
}

.advantage {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.number {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: var(--white);
  background: var(--blue);
  border-radius: 8px;
  font-weight: 800;
}

.advantage p,
.timeline p,
.spec-table td,
.check-list li {
  color: var(--muted);
}

.application-band {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 26px;
  align-items: stretch;
}

.machine-visual {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  background: #0e3659;
  border-radius: 8px;
}

.machine-visual::before,
.machine-visual::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.28);
}

.machine-visual::before {
  left: 52px;
  top: 58px;
  width: 230px;
  height: 160px;
  background: rgba(255, 255, 255, 0.08);
}

.machine-visual::after {
  right: 44px;
  bottom: 52px;
  width: 190px;
  height: 96px;
  background: rgba(244, 123, 32, 0.16);
}

.shaft {
  position: absolute;
  left: 50px;
  right: 50px;
  top: 50%;
  height: 28px;
  background: #d6e0e8;
  transform: translateY(-50%);
}

.bearing-block {
  position: absolute;
  top: calc(50% - 70px);
  width: 94px;
  height: 140px;
  border: 20px solid #f47b20;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.bearing-block.left {
  left: 92px;
}

.bearing-block.right {
  right: 92px;
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline-item {
  padding: 18px;
  border-left: 4px solid var(--orange);
  background: var(--white);
  border-radius: 0 8px 8px 0;
}

.cta {
  color: var(--white);
  background: var(--blue);
}

.cta .section-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 30px;
  align-items: center;
  padding: 54px 0;
}

.cta h2 {
  color: var(--white);
}

.cta p {
  max-width: 720px;
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.78);
}

.page-hero {
  padding: 74px 0 44px;
  background: var(--soft);
  border-bottom: 1px solid var(--line);
}

.page-hero .section-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.42fr);
  gap: 38px;
  align-items: end;
}

.page-hero p {
  max-width: 720px;
  margin-top: 16px;
  color: var(--muted);
  font-size: 17px;
}

.mini-panel {
  padding: 20px;
  color: var(--blue);
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.mini-panel strong {
  display: block;
  font-size: 28px;
  line-height: 1;
}

.mini-panel span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.spec-table th,
.spec-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.spec-table th {
  width: 34%;
  color: var(--blue);
  background: #f4f8fb;
  font-size: 14px;
}

.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border-bottom: 0;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 0.38fr);
  gap: 24px;
  align-items: start;
}

.detail-panel {
  padding: 24px;
}

.check-list {
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 10px;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 9px;
  height: 9px;
  background: var(--orange);
  border-radius: 50%;
}

.form-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.45fr);
  gap: 24px;
}

.form-panel {
  padding: 26px;
}

.rfq-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.field {
  display: grid;
  gap: 7px;
}

.field.full {
  grid-column: 1 / -1;
}

.field label {
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid #c9d6e2;
  border-radius: 8px;
  color: var(--ink);
  background: var(--white);
  font: inherit;
}

.field textarea {
  min-height: 132px;
  resize: vertical;
}

.form-note {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
}

.contact-stack {
  display: grid;
  gap: 14px;
}

.contact-item {
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.contact-item strong {
  display: block;
  color: var(--blue);
  margin-bottom: 4px;
}

.footer {
  color: rgba(255, 255, 255, 0.78);
  background: #081f35;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.45fr);
  gap: 36px;
  padding: 44px 0;
}

.footer strong,
.footer h3 {
  color: #ffffff;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 20px;
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 16px 0;
  font-size: 13px;
}

.notice {
  padding: 14px 16px;
  color: #714000;
  background: #fff7ed;
  border: 1px solid #ffd7aa;
  border-radius: 8px;
}

@media (max-width: 980px) {
  .hero-grid,
  .application-band,
  .detail-layout,
  .form-layout,
  .footer-inner,
  .page-hero .section-inner,
  .cta .section-inner {
    grid-template-columns: 1fr;
  }

  .grid-4,
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nav-inner {
    flex-wrap: wrap;
  }

  .nav-actions .btn-outline {
    display: none;
  }

  .language-switch {
    margin-left: auto;
  }
}

@media (max-width: 760px) {
  .top-strip .inner {
    flex-direction: column;
    gap: 2px;
  }

  .nav-inner {
    min-height: 66px;
  }

  .brand {
    min-width: 0;
  }

  .brand-text strong {
    font-size: 14px;
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .nav-links {
    display: none;
    width: 100%;
    order: 5;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 16px;
  }

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

  .nav-links a {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
  }

  .nav-actions {
    margin-left: auto;
  }

  .nav-actions .btn-primary {
    display: none;
  }

  .language-switch button {
    min-width: 40px;
  }

  .hero-grid {
    min-height: auto;
    padding: 44px 0;
    gap: 34px;
  }

  h1 {
    font-size: 38px;
  }

  .proof-row,
  .grid-4,
  .grid-3,
  .grid-2,
  .rfq-form {
    grid-template-columns: 1fr;
  }

  .bearing-stage {
    min-height: 390px;
  }

  .photo-frame,
  .photo-frame.product-detail-photo {
    min-height: 390px;
  }

  .photo-frame.section-photo {
    min-height: 300px;
  }

  .bearing-visual {
    inset: 36px 18px 94px;
  }

  .outer-ring {
    width: 270px;
    height: 270px;
    border-width: 36px;
  }

  .inner-ring {
    width: 120px;
    height: 120px;
  }

  .roller {
    height: 58px;
    margin-top: -29px;
  }

  .roller:nth-child(1) { transform: rotate(0deg) translateY(-103px); }
  .roller:nth-child(2) { transform: rotate(30deg) translateY(-103px); }
  .roller:nth-child(3) { transform: rotate(60deg) translateY(-103px); }
  .roller:nth-child(4) { transform: rotate(90deg) translateY(-103px); }
  .roller:nth-child(5) { transform: rotate(120deg) translateY(-103px); }
  .roller:nth-child(6) { transform: rotate(150deg) translateY(-103px); }
  .roller:nth-child(7) { transform: rotate(180deg) translateY(-103px); }
  .roller:nth-child(8) { transform: rotate(210deg) translateY(-103px); }
  .roller:nth-child(9) { transform: rotate(240deg) translateY(-103px); }
  .roller:nth-child(10) { transform: rotate(270deg) translateY(-103px); }
  .roller:nth-child(11) { transform: rotate(300deg) translateY(-103px); }
  .roller:nth-child(12) { transform: rotate(330deg) translateY(-103px); }

  .visual-caption {
    flex-direction: column;
    gap: 5px;
  }

  .section {
    padding: 58px 0;
  }

  .section-head {
    display: block;
  }

  .section-head p {
    margin-top: 12px;
  }

  .machine-visual {
    min-height: 300px;
  }

  .bearing-block.left {
    left: 54px;
  }

  .bearing-block.right {
    right: 54px;
  }

  .spec-table th,
  .spec-table td {
    display: block;
    width: 100%;
  }

  .spec-table th {
    border-bottom: 0;
    padding-bottom: 4px;
  }

  .spec-table td {
    padding-top: 4px;
  }
}

@media (max-width: 480px) {
  .top-strip .inner,
  .nav-inner,
  .section-inner,
  .footer-inner {
    width: min(100% - 28px, 1160px);
  }

  .btn {
    width: 100%;
  }

  .language-switch {
    width: auto;
  }

  .hero-actions,
  .section-actions {
    flex-direction: column;
  }

  .machine-visual::before {
    left: 26px;
    width: 180px;
  }

  .machine-visual::after {
    right: 24px;
    width: 150px;
  }
}