:root {
  --paper: #fbfaf7;
  --surface: #ffffff;
  --ink: #25211f;
  --muted: #756f69;
  --line: #e7e1dc;
  --rose: #c9828c;
  --rose-dark: #8e515c;
  --sage: #74856c;
  --champagne: #d8b48f;
  --shadow: 0 18px 50px rgba(63, 45, 35, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
}

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 72px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(251, 250, 247, 0.78);
  border-bottom: 1px solid rgba(231, 225, 220, 0.65);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
}

.brand-mark {
  width: 16px;
  height: 16px;
  border: 1px solid var(--rose-dark);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--rose), var(--sage));
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}

.site-nav a {
  position: relative;
  padding: 8px 0;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 1px;
  background: var(--rose-dark);
  content: "";
  opacity: 0;
  transform: scaleX(0.45);
  transition: 180ms ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--ink);
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
  opacity: 1;
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1px;
  margin: 5px auto;
  background: var(--ink);
}

.hero {
  position: relative;
  min-height: 92vh;
  padding: 144px clamp(20px, 7vw, 96px) 90px;
  overflow: hidden;
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(251, 250, 247, 0.96) 0%, rgba(251, 250, 247, 0.74) 36%, rgba(251, 250, 247, 0.08) 78%);
  content: "";
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(560px, 100%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--rose-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(42px, 7vw, 82px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-content > p:not(.eyebrow) {
  max-width: 460px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  transition: 180ms ease;
}

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

.button.primary:hover {
  background: var(--rose-dark);
}

.button.secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.74);
  border-color: var(--line);
}

.button.secondary:hover {
  border-color: var(--rose);
}

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

.intro-strip div {
  min-height: 110px;
  padding: 26px clamp(20px, 5vw, 72px);
  border-right: 1px solid var(--line);
}

.intro-strip div:last-child {
  border-right: 0;
}

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

.intro-strip strong {
  margin-bottom: 8px;
  font-size: 18px;
}

.intro-strip span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 96px clamp(20px, 6vw, 88px);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 36px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.1;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.75fr);
  gap: 34px;
  align-items: stretch;
}

.about-copy {
  max-width: 820px;
  color: var(--muted);
  font-size: 17px;
  line-height: 2;
}

.about-note {
  display: flex;
  min-height: 220px;
  padding: 30px;
  flex-direction: column;
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.about-note span {
  color: var(--sage);
  font-size: 13px;
  font-weight: 700;
}

.about-note strong {
  max-width: 300px;
  font-size: 26px;
  line-height: 1.4;
}

.work-section {
  background: #f4f7f2;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.product-card {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid rgba(231, 225, 220, 0.82);
  border-radius: 8px;
  box-shadow: 0 14px 42px rgba(45, 54, 42, 0.08);
}

.product-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.product-info {
  padding: 22px;
}

.product-info p {
  margin-bottom: 12px;
  color: var(--rose-dark);
  font-size: 13px;
  font-weight: 700;
}

.product-info h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

.product-info span {
  display: block;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1fr);
  gap: 42px;
}

.contact-copy {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.contact-copy a,
.contact-copy span {
  display: block;
  margin-top: 16px;
  color: var(--ink);
  font-weight: 700;
}

.contact-form {
  display: grid;
  gap: 18px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px 14px;
  color: var(--ink);
  background: #fff;
  font: inherit;
  outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--rose);
  box-shadow: 0 0 0 3px rgba(201, 130, 140, 0.18);
}

.contact-form textarea {
  resize: vertical;
}

.form-status {
  min-height: 22px;
  margin: 0;
  color: var(--sage);
  font-size: 14px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 26px clamp(20px, 6vw, 88px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: var(--surface);
  font-size: 14px;
}

.site-footer a {
  color: var(--ink);
  font-weight: 700;
}

@media (max-width: 860px) {
  .site-header {
    min-height: 66px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 20px;
    display: none;
    min-width: 190px;
    padding: 14px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .hero {
    min-height: 88vh;
    padding-top: 122px;
  }

  .hero::after {
    background: linear-gradient(180deg, rgba(251, 250, 247, 0.96) 0%, rgba(251, 250, 247, 0.84) 48%, rgba(251, 250, 247, 0.22) 100%);
  }

  .hero-image {
    object-position: 61% center;
  }

  .intro-strip,
  .about-grid,
  .product-grid,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .intro-strip div {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .intro-strip div:last-child {
    border-bottom: 0;
  }

  .section {
    padding-block: 74px;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .hero {
    padding-bottom: 58px;
  }

  h1 {
    font-size: 40px;
  }

  .button {
    width: 100%;
  }

  .contact-form {
    padding: 20px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}