:root {
  --ink: #16211f;
  --muted: #5c6c68;
  --line: #dbe5df;
  --paper: #fbfaf5;
  --white: #ffffff;
  --teal: #0e7c73;
  --teal-dark: #075a54;
  --coral: #d65f4b;
  --gold: #c5973d;
  --blue: #245c8f;
  --shadow: 0 22px 65px rgba(22, 33, 31, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  line-height: 1.55;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(251, 250, 245, 0.92);
  border-bottom: 1px solid rgba(219, 229, 223, 0.85);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 218px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--white);
  background: var(--teal-dark);
  border-radius: 8px;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  font-size: 0.76rem;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex: 1;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--teal-dark);
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 750;
  cursor: pointer;
}

.nav-cta,
.button.primary {
  color: var(--white);
  background: var(--teal-dark);
}

.button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.12);
}

.button.full {
  width: 100%;
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.hero {
  position: relative;
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 340px);
  align-items: end;
  gap: 28px;
  padding: clamp(76px, 10vw, 128px) clamp(18px, 5vw, 72px) 34px;
  overflow: hidden;
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(5, 32, 30, 0.86), rgba(5, 32, 30, 0.55) 48%, rgba(5, 32, 30, 0.2)),
    linear-gradient(0deg, rgba(5, 32, 30, 0.35), rgba(5, 32, 30, 0.02));
}

.hero-content,
.hero-panel {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 760px;
  color: var(--white);
  padding-bottom: 38px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--coral);
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #ffb29f;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 18px;
  font-size: clamp(2.55rem, 6vw, 5.4rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 630px;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(1rem, 2.2vw, 1.28rem);
}

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

.hero-panel {
  display: grid;
  gap: 1px;
  margin-bottom: 38px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(14px);
}

.hero-panel div {
  padding: 18px;
  background: rgba(255, 255, 255, 0.12);
}

.hero-panel span,
.hero-panel strong {
  display: block;
  color: var(--white);
}

.hero-panel span {
  opacity: 0.76;
  font-size: 0.86rem;
}

.hero-panel strong {
  margin-top: 4px;
  font-size: 1.24rem;
}

.intro-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line);
}

.intro-band div {
  padding: 26px clamp(18px, 4vw, 48px);
  background: var(--white);
}

.intro-band strong,
.intro-band span {
  display: block;
}

.intro-band span {
  color: var(--muted);
  margin-top: 4px;
}

.section {
  padding: clamp(56px, 9vw, 102px) clamp(18px, 5vw, 72px);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 30px;
}

.section-heading.compact {
  margin-bottom: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(2rem, 4vw, 3.55rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.contact-copy p {
  color: var(--muted);
  font-size: 1.04rem;
}

.catalog-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.filter {
  min-height: 40px;
  padding: 0 15px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  cursor: pointer;
}

.filter.active {
  color: var(--white);
  border-color: var(--teal-dark);
  background: var(--teal-dark);
}

.product-grid,
.trust-grid,
.story-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.product-card,
.trust-grid div,
.step,
.lead-form,
.story-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.story-section {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.56), transparent 36%),
    #f5f0e8;
}

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

.story-card {
  position: relative;
  overflow: hidden;
  box-shadow: 0 22px 48px rgba(22, 33, 31, 0.12);
}

.story-card img {
  display: block;
  width: 100%;
  aspect-ratio: 1.25;
  object-fit: cover;
  background: #edf3ef;
  transition: transform 260ms ease;
}

.story-card:hover img {
  transform: scale(1.035);
}

.story-card div {
  position: relative;
  margin-top: -42px;
  padding: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), var(--white));
  border-top: 1px solid rgba(255, 255, 255, 0.7);
}

.story-card h3 {
  margin-bottom: 8px;
  font-size: 1.18rem;
}

.story-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.product-card {
  display: flex;
  min-height: 330px;
  flex-direction: column;
  padding: 22px;
  box-shadow: 0 14px 34px rgba(22, 33, 31, 0.06);
}

.featured-card {
  border-color: rgba(198, 151, 61, 0.62);
  background:
    linear-gradient(135deg, rgba(198, 151, 61, 0.14), transparent 52%),
    var(--white);
}

.card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 22px;
  font-size: 0.86rem;
}

.tag {
  color: var(--teal-dark);
  font-weight: 800;
}

.price {
  color: var(--coral);
  font-weight: 850;
}

.product-card h3 {
  font-size: 1.28rem;
}

.product-card p,
.product-card li,
.step p,
.trust-grid p {
  color: var(--muted);
}

.product-card ul {
  display: grid;
  gap: 7px;
  margin: auto 0 0;
  padding-left: 19px;
}

.split-section {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(24px, 5vw, 72px);
  background: #edf3ef;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.step {
  min-height: 220px;
  padding: 22px;
}

.step span {
  display: inline-block;
  margin-bottom: 26px;
  color: var(--gold);
  font-weight: 900;
}

.trust-section {
  background: var(--white);
}

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

.trust-grid div {
  min-height: 210px;
  padding: 26px;
  background:
    linear-gradient(135deg, rgba(14, 124, 115, 0.08), transparent 55%),
    var(--paper);
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 520px);
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
  background: #f7efe7;
}

.contact-copy {
  max-width: 720px;
}

.lead-form {
  display: grid;
  gap: 16px;
  padding: 24px;
  box-shadow: var(--shadow);
}

label {
  display: grid;
  gap: 8px;
  font-weight: 750;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px 14px;
  color: var(--ink);
  background: #fffefa;
  font: inherit;
}

textarea {
  resize: vertical;
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(18px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.75);
  background: #16211f;
}

@media (max-width: 960px) {
  .nav-links,
  .nav-cta {
    display: none;
  }

  .menu-button {
    display: block;
    margin-left: auto;
  }

  .site-header.menu-open .nav-links {
    position: absolute;
    top: 70px;
    right: 18px;
    left: 18px;
    display: grid;
    gap: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .site-header.menu-open .nav-links a {
    padding: 15px 18px;
    border-bottom: 1px solid var(--line);
  }

  .hero,
  .split-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 760px;
    align-items: end;
  }

  .hero-panel {
    grid-template-columns: repeat(3, 1fr);
    margin-bottom: 0;
  }

  .intro-band,
  .product-grid,
  .steps,
  .trust-grid,
  .story-grid {
    grid-template-columns: 1fr;
  }

  .product-card,
  .step,
  .trust-grid div,
  .story-card {
    min-height: auto;
  }
}

@media (max-width: 560px) {
  .brand {
    min-width: auto;
  }

  .brand small {
    display: none;
  }

  .hero {
    min-height: 720px;
    padding-top: 58px;
  }

  .hero-panel {
    grid-template-columns: 1fr;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .site-footer {
    flex-direction: column;
  }
}