:root {
  --ink: #16201c;
  --muted: #63706a;
  --line: #dfe5e1;
  --paper: #fbfbf8;
  --white: #ffffff;
  --sage: #7fa08d;
  --sage-dark: #416857;
  --copper: #b76e44;
  --clay: #f0e2d6;
  --sky: #d9e8ee;
  --shadow: 0 18px 50px rgba(22, 32, 28, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  line-height: 1.65;
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251, 251, 248, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.nav {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--sage-dark);
  font-size: 18px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
}

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

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--white);
  width: 42px;
  height: 42px;
  border-radius: 8px;
  font-size: 20px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: var(--ink);
  color: var(--white);
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
}

.button:hover {
  background: #26332e;
}

.button.secondary {
  background: var(--white);
  color: var(--ink);
  border-color: var(--line);
}

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

.hero {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: 44px;
  align-items: center;
  padding: 48px 0 36px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--copper);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.14;
  letter-spacing: 0;
}

h1 {
  max-width: 620px;
  font-size: clamp(36px, 6vw, 68px);
}

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

h3 {
  font-size: 20px;
}

.lead {
  max-width: 650px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 18px;
}

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

.trust-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 34px;
}

.trust-item,
.feature-card,
.policy-card,
.product-panel,
.contact-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.trust-item {
  padding: 14px;
}

.trust-item strong {
  display: block;
  font-size: 14px;
}

.trust-item span {
  color: var(--muted);
  font-size: 13px;
}

.hero-media {
  position: relative;
}

.hero-media::before {
  content: "";
  position: absolute;
  inset: auto 5% -22px 12%;
  height: 34%;
  background: var(--sky);
  filter: blur(24px);
  border-radius: 999px;
  z-index: -1;
}

.hero-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.section {
  padding: 72px 0;
}

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

.container {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.section-head {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-head p {
  color: var(--muted);
  margin: 14px 0 0;
}

.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feature-card {
  padding: 22px;
}

.icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--clay);
  color: var(--ink);
  margin-bottom: 14px;
  font-size: 20px;
}

.feature-card p,
.policy-card p,
.product-panel p,
.contact-card p,
.legal-content p,
.legal-content li {
  color: var(--muted);
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 24px;
  align-items: start;
}

.product-panel {
  padding: 28px;
}

.price {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 16px 0 8px;
}

.price strong {
  font-size: 36px;
}

.price span {
  color: var(--muted);
  text-decoration: line-through;
}

.swatches {
  display: flex;
  gap: 10px;
  margin: 18px 0;
}

.swatch {
  width: 34px;
  height: 34px;
  border: 2px solid var(--white);
  outline: 1px solid var(--line);
  border-radius: 50%;
}

.swatch.smoke {
  background: #5d6765;
}

.swatch.clear {
  background: #eef2f0;
}

.swatch.sage {
  background: var(--sage);
}

.spec-list {
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}

.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.spec-list span {
  color: var(--muted);
}

.details-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 18px;
}

.policy-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.policy-card,
.contact-card {
  padding: 24px;
}

.policy-card a {
  color: var(--sage-dark);
  font-weight: 700;
  text-decoration: none;
}

.reviews {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.review {
  padding: 24px;
  border-left: 4px solid var(--sage);
  background: var(--paper);
}

.faq {
  display: grid;
  gap: 12px;
}

details {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 20px;
}

summary {
  cursor: pointer;
  font-weight: 800;
}

.site-footer {
  background: #101815;
  color: var(--white);
  padding: 42px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 1fr);
  gap: 28px;
}

.site-footer p,
.site-footer a {
  color: #c9d2ce;
}

.site-footer a {
  display: block;
  text-decoration: none;
  margin: 7px 0;
}

.footer-bottom {
  margin-top: 32px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  color: #c9d2ce;
  font-size: 13px;
}

.page-hero {
  padding: 70px 0 44px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.page-hero p {
  max-width: 760px;
  color: var(--muted);
}

.legal-content {
  width: min(900px, calc(100% - 32px));
  margin: 0 auto;
  padding: 54px 0 72px;
}

.legal-content h2 {
  font-size: 26px;
  margin-top: 34px;
}

.legal-content h3 {
  margin-top: 24px;
}

.legal-content ul {
  padding-left: 22px;
}

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

label {
  display: grid;
  gap: 6px;
  font-weight: 700;
}

input,
textarea,
select {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--ink);
  font: inherit;
}

textarea {
  min-height: 130px;
  resize: vertical;
}

@media (max-width: 900px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 18px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

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

  .hero,
  .product-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .features,
  .policy-grid,
  .contact-grid,
  .reviews {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 620px) {
  .trust-row,
  .features,
  .details-band,
  .policy-grid,
  .contact-grid,
  .reviews {
    grid-template-columns: 1fr;
  }

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

  .section {
    padding: 54px 0;
  }
}