:root {
  --ink: #102017;
  --ink-2: #1c2d22;
  --muted: #667266;
  --line: #dfe5dc;
  --paper: #ffffff;
  --paper-soft: #f5f7f2;
  --green: #12351f;
  --green-2: #1f5a35;
  --gold: #c4a35d;
  --gold-2: #9d7c34;
  --white: #ffffff;
  --shadow: 0 24px 80px rgba(16, 32, 23, 0.18);
  --max: 1180px;
  --header-h: 76px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  letter-spacing: 0;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  position: fixed;
  z-index: 40;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 0 clamp(18px, 4vw, 52px);
  color: var(--white);
  background: rgba(10, 24, 15, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 206px;
  line-height: 1;
}

.brand img {
  width: 46px;
  height: 46px;
  object-fit: cover;
  border-radius: 50%;
  background: var(--white);
}

.brand strong {
  display: block;
  font-size: 22px;
  font-weight: 860;
  letter-spacing: 0.06em;
}

.brand small {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 2.6vw, 30px);
  flex: 1;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  font-weight: 700;
}

.main-nav a {
  padding: 8px 0;
}

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

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

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

.language-select,
.header-email {
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  color: var(--white);
}

.language-select {
  min-width: 96px;
  padding: 0 10px;
  outline: none;
}

.language-select option {
  color: var(--ink);
  background: var(--white);
}

.header-email {
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  font-size: 13px;
  font-weight: 700;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  color: var(--white);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 78% 24%, rgba(196, 163, 93, 0.2), transparent 32%),
    linear-gradient(135deg, #07140c 0%, #102519 54%, #f4f6f1 54.1%, #ffffff 100%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(var(--max), calc(100% - 40px));
  min-height: 100svh;
  margin: 0 auto;
  padding: calc(var(--header-h) + 80px) 0 76px;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.72fr);
  gap: clamp(28px, 5vw, 58px);
  align-items: center;
}

.hero-copy {
  max-width: 760px;
}

.hero-product {
  position: relative;
  overflow: hidden;
  padding: clamp(16px, 2.3vw, 28px);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(18, 53, 31, 0.12);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-product img {
  width: 100%;
  max-height: 72svh;
  object-fit: contain;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 850;
  line-height: 1.2;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(45px, 7vw, 88px);
  line-height: 0.98;
  font-weight: 880;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 4.2vw, 56px);
  line-height: 1.04;
  font-weight: 850;
}

h3 {
  margin-bottom: 12px;
  font-size: 23px;
  line-height: 1.14;
  font-weight: 820;
}

.hero-subtitle {
  max-width: 700px;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.58;
}

.hero-cta,
.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-cta {
  margin-bottom: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 800;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease, border-color 160ms ease;
}

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

.button-primary {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
}

.button-primary:hover {
  background: #d5b86d;
}

.button-secondary {
  color: var(--white);
  background: rgba(255, 255, 255, 0.11);
  border-color: rgba(255, 255, 255, 0.28);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.18);
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-points span {
  padding: 9px 12px;
  color: rgba(255, 255, 255, 0.84);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 760;
}

.proof-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(var(--max), calc(100% - 40px));
  margin: -52px auto 0;
  position: relative;
  z-index: 5;
  overflow: hidden;
  background: var(--white);
  border: 1px solid rgba(18, 53, 31, 0.12);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.proof-band div {
  padding: 26px 28px;
  border-right: 1px solid var(--line);
}

.proof-band div:last-child {
  border-right: 0;
}

.proof-band strong {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 28px;
  line-height: 1;
}

.proof-band span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.section,
.process-section {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 110px 0;
}

.section-copy,
.section-heading {
  max-width: 840px;
}

.section-copy p,
.section-heading p,
.spotlight-copy p,
.feature-copy p,
.market-grid p,
.factory-grid p,
.process-grid p,
.faq-grid p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.factory-grid,
.market-grid,
.process-grid,
.faq-grid,
.product-grid {
  display: grid;
  gap: 18px;
}

.factory-grid {
  grid-template-columns: repeat(3, 1fr);
  margin-top: 44px;
}

.factory-grid article,
.market-grid article,
.process-grid article,
.faq-grid article,
.product-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.factory-grid article,
.market-grid article,
.process-grid article,
.faq-grid article {
  padding: 24px;
}

.factory-grid span,
.market-grid span,
.process-grid span {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--gold-2);
  font-size: 13px;
  font-weight: 850;
}

.product-section {
  padding-top: 70px;
}

.product-spotlight {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(340px, 0.94fr);
  gap: 34px;
  align-items: center;
  margin-top: 44px;
  padding: 26px;
  background: linear-gradient(135deg, #f6f8f3 0%, #ffffff 100%);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.spotlight-media {
  overflow: hidden;
  border-radius: 8px;
  background: var(--white);
}

.spotlight-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: var(--white);
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 24px 0;
}

.spec-grid span {
  padding: 12px;
  color: var(--ink-2);
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 780;
}

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

.product-card {
  padding: 24px;
}

.product-card p {
  min-height: 108px;
}

.product-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0;
}

.product-meta span {
  padding: 8px 10px;
  color: var(--green);
  background: #edf4eb;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 820;
}

.product-card button {
  width: 100%;
  min-height: 42px;
  color: var(--green);
  background: transparent;
  border: 1px solid rgba(18, 53, 31, 0.28);
  border-radius: 8px;
  font-weight: 820;
  cursor: pointer;
}

.product-card button:hover {
  background: var(--green);
  color: var(--white);
}

.fine-print {
  margin-top: 16px;
  color: var(--muted);
  font-size: 13px;
}

.feature-band {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr);
  gap: clamp(28px, 5vw, 58px);
  align-items: center;
  padding: 96px max(20px, calc((100vw - var(--max)) / 2));
  color: var(--white);
  background: var(--green);
}

.feature-image {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 20px 70px rgba(0, 0, 0, 0.28);
}

.feature-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: var(--white);
}

.feature-copy p {
  color: rgba(255, 255, 255, 0.72);
}

.feature-list {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.feature-list div {
  padding: 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
}

.feature-list strong,
.feature-list span {
  display: block;
}

.feature-list strong {
  margin-bottom: 7px;
  color: var(--white);
}

.feature-list span {
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.55;
}

.market-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: 42px;
  align-items: start;
}

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

.process-section {
  padding-top: 0;
}

.process-grid {
  grid-template-columns: repeat(4, 1fr);
  margin-top: 36px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(320px, 0.72fr) minmax(0, 1fr);
  gap: 38px;
  padding: 104px max(20px, calc((100vw - var(--max)) / 2));
  background: var(--paper-soft);
}

.contact-copy p {
  color: var(--muted);
  line-height: 1.7;
}

.contact-direct {
  display: grid;
  gap: 8px;
  margin-top: 24px;
}

.contact-direct span,
.contact-direct a {
  display: inline-flex;
  width: fit-content;
  padding: 10px 12px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 780;
}

.inquiry-form {
  display: grid;
  gap: 18px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 60px rgba(16, 32, 23, 0.08);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.inquiry-form label {
  display: grid;
  gap: 7px;
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 820;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  min-height: 46px;
  padding: 11px 12px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  outline: none;
}

.inquiry-form textarea {
  resize: vertical;
}

.inquiry-form input:focus,
.inquiry-form select:focus,
.inquiry-form textarea:focus {
  border-color: var(--green-2);
  box-shadow: 0 0 0 3px rgba(31, 90, 53, 0.12);
}

.form-submit {
  width: fit-content;
}

.form-result {
  padding: 16px;
  background: #edf4eb;
  border: 1px solid rgba(31, 90, 53, 0.2);
  border-radius: 8px;
}

.form-result p {
  margin-bottom: 12px;
  color: var(--green);
  font-weight: 780;
}

.form-result .button-secondary {
  color: var(--green);
  background: var(--white);
  border-color: rgba(18, 53, 31, 0.22);
}

.faq-grid {
  grid-template-columns: repeat(2, 1fr);
  margin-top: 36px;
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto;
  gap: 26px;
  align-items: start;
  padding: 44px max(20px, calc((100vw - var(--max)) / 2));
  color: rgba(255, 255, 255, 0.78);
  background: #07140c;
}

.footer-brand {
  display: flex;
  gap: 14px;
  align-items: center;
}

.footer-brand img {
  width: 54px;
  height: 54px;
  object-fit: cover;
  border-radius: 50%;
  background: var(--white);
}

.footer-brand strong {
  color: var(--white);
  font-size: 20px;
  letter-spacing: 0.06em;
}

.footer-brand p {
  margin: 6px 0 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
  font-size: 14px;
  font-weight: 760;
}

.copyright {
  grid-column: 1 / -1;
  margin: 12px 0 0;
  color: rgba(255, 255, 255, 0.54);
  font-size: 13px;
}

@media (max-width: 980px) {
  .site-header {
    gap: 12px;
  }

  .header-email {
    display: none;
  }

  .main-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px 20px 22px;
    color: var(--white);
    background: rgba(7, 20, 12, 0.98);
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  }

  body.nav-open .main-nav {
    display: flex;
  }

  .main-nav a {
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .nav-toggle {
    display: inline-flex;
  }

  .proof-band,
  .hero-inner,
  .factory-grid,
  .product-grid,
  .product-spotlight,
  .feature-band,
  .market-section,
  .process-grid,
  .contact-section,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .hero {
    background: #07140c;
  }

  .proof-band div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .proof-band div:last-child {
    border-bottom: 0;
  }

  .contact-section,
  .feature-band {
    padding-left: 20px;
    padding-right: 20px;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  :root {
    --header-h: 68px;
  }

  .site-header {
    padding: 0 14px;
  }

  .brand {
    min-width: 0;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .brand strong {
    font-size: 18px;
  }

  .brand small {
    display: none;
  }

  .language-select {
    min-width: 82px;
  }

  .hero-inner {
    width: min(var(--max), calc(100% - 28px));
    padding-bottom: 52px;
  }

  h1 {
    font-size: clamp(38px, 13vw, 54px);
  }

  h2 {
    font-size: clamp(29px, 10vw, 42px);
  }

  .proof-band,
  .section,
  .process-section {
    width: calc(100% - 28px);
  }

  .section,
  .process-section {
    padding: 76px 0;
  }

  .form-grid,
  .faq-grid,
  .spec-grid {
    grid-template-columns: 1fr;
  }

  .product-spotlight,
  .inquiry-form {
    padding: 18px;
  }
}