:root {
  color-scheme: light;
  --ink: #2c2316;
  --muted: #756b5e;
  --line: #e8ddc9;
  --honey: #f6b51d;
  --honey-dark: #6e3d06;
  --cream: #fff9ee;
  --paper: #ffffff;
  --blue: #b9dceb;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(255, 249, 238, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 30px);
  font-size: 15px;
  color: var(--muted);
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  align-items: center;
  gap: clamp(28px, 6vw, 72px);
  padding: clamp(34px, 6vw, 76px) clamp(18px, 5vw, 72px);
  background:
    linear-gradient(120deg, rgba(255, 249, 238, 0.96), rgba(255, 255, 255, 0.7)),
    linear-gradient(180deg, #fff7e5, #ffffff);
}

.hero-copy {
  max-width: 620px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--honey-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 20px;
  font-size: clamp(58px, 12vw, 128px);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 5vw, 56px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.lead {
  max-width: 560px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--honey-dark);
  border-radius: 6px;
  font-weight: 700;
}

.button.primary {
  color: #fff;
  background: var(--honey-dark);
}

.button.ghost {
  background: rgba(255, 255, 255, 0.62);
}

.hero-media {
  margin: 0;
  justify-self: center;
  width: min(540px, 100%);
}

.hero-media img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 28px 80px rgba(91, 54, 6, 0.18);
}

.section {
  padding: clamp(58px, 8vw, 112px) clamp(18px, 5vw, 72px);
}

.section-heading {
  max-width: 780px;
  margin: 0 auto 38px;
  text-align: center;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 1160px;
  margin: 0 auto;
}

.product-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdf9;
}

.product-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  margin-bottom: 18px;
  border-radius: 6px;
  background: #fff;
}

.product-card p,
.feature-list p,
.use-copy p,
.assurance-section p,
address {
  color: var(--muted);
  line-height: 1.75;
}

.feature-band {
  background: #f5fbfe;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  max-width: 1180px;
  margin: 0 auto;
}

.feature-list article {
  padding: 24px;
  border-top: 4px solid var(--blue);
  background: #fff;
  border-radius: 8px;
}

.feature-list span {
  display: block;
  margin-bottom: 24px;
  color: var(--honey-dark);
  font-weight: 800;
}

.use-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(360px, 1.22fr);
  align-items: center;
  gap: clamp(28px, 5vw, 68px);
  background: var(--cream);
}

.use-copy {
  max-width: 560px;
}

ol {
  display: grid;
  gap: 12px;
  margin: 28px 0;
  padding-left: 24px;
  font-size: 18px;
  line-height: 1.7;
}

.note {
  padding: 16px;
  border-left: 4px solid var(--honey);
  background: #fff;
}

.packaging {
  margin: 0;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.packaging img {
  min-width: 860px;
}

.assurance-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(300px, 0.7fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  max-width: 1180px;
  margin: 0 auto;
}

.assurance-section img {
  width: 100%;
  border-radius: 8px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  padding: 34px clamp(18px, 5vw, 72px);
  color: #fff;
  background: var(--honey-dark);
}

.site-footer img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  margin-bottom: 10px;
}

.site-footer p,
.site-footer address {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-style: normal;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    width: 100%;
    justify-content: space-between;
  }

  .hero,
  .use-section,
  .assurance-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .product-grid,
  .feature-list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  nav {
    gap: 10px;
    font-size: 14px;
  }

  h1 {
    font-size: 64px;
  }

  .product-grid,
  .feature-list {
    grid-template-columns: 1fr;
  }

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