:root {
  --ink: #1b1712;
  --muted: #766a5d;
  --paper: #f6efe3;
  --paper-2: #ede1cf;
  --surface: #fffaf1;
  --dark: #171b15;
  --dark-2: #263b2f;
  --tea: #8b3f20;
  --tea-2: #b76a34;
  --gold: #c49a56;
  --green: #3d604d;
  --line: rgba(27, 23, 18, 0.13);
  --white: #fff;
  --shadow: 0 28px 80px rgba(38, 25, 13, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

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

.site-header {
  position: fixed;
  z-index: 20;
  inset: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  color: var(--white);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.site-header.is-scrolled {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(23, 27, 21, 0.92);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 210px;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  font-weight: 900;
}

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

.brand small {
  color: rgba(255, 255, 255, 0.68);
  font-size: 12px;
}

.main-nav {
  display: flex;
  gap: clamp(14px, 2.2vw, 30px);
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 4px;
  color: var(--dark);
  background: var(--white);
  font-weight: 800;
  white-space: nowrap;
}

.hero {
  position: relative;
  min-height: 96vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  padding: 138px clamp(20px, 5vw, 72px) 80px;
  color: var(--white);
}

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

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

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(18, 15, 10, 0.84), rgba(18, 15, 10, 0.42) 46%, rgba(18, 15, 10, 0.72)),
    linear-gradient(180deg, rgba(0, 0, 0, 0.22), rgba(0, 0, 0, 0.58));
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(940px, 100%);
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  width: min(860px, 100%);
  margin: 0;
  font-size: clamp(42px, 7vw, 88px);
  line-height: 1.05;
  letter-spacing: 0;
}

.hero-copy {
  width: min(680px, 100%);
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(17px, 2vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button,
.product-row button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 0;
  border-radius: 5px;
  cursor: pointer;
  font-weight: 900;
  white-space: nowrap;
}

.button.primary,
.product-row button {
  padding: 0 24px;
  color: var(--white);
  background: var(--tea);
  box-shadow: 0 16px 38px rgba(80, 34, 17, 0.23);
}

.button.ghost {
  padding: 0 24px;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.36);
  background: rgba(255, 255, 255, 0.08);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: min(760px, 100%);
  margin: 58px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.hero-metrics div {
  padding: 18px 24px 0 0;
}

.hero-metrics dt {
  font-size: 34px;
  font-weight: 900;
}

.hero-metrics dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.section {
  padding: 90px clamp(20px, 5vw, 72px);
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(280px, 0.74fr);
  gap: clamp(26px, 6vw, 92px);
  align-items: end;
  margin-bottom: 34px;
}

h2 {
  margin: 0;
  font-size: clamp(30px, 4.5vw, 58px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  line-height: 1.24;
}

.split-heading p,
.proof-copy p,
.feature-panel p,
.label-content p,
.origin-card p,
.quote-copy p,
.article-grid p,
.faq p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.solution-grid article {
  min-height: 280px;
  padding: 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.solution-grid span {
  color: var(--gold);
  font-size: 28px;
  font-weight: 900;
}

.solution-grid h3 {
  margin-top: 42px;
  font-size: 24px;
}

.solution-grid p {
  margin: 12px 0 0;
  color: var(--muted);
}

.proof-band {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 0.7fr);
  gap: 42px;
  color: var(--white);
  background: var(--dark-2);
}

.proof-band .proof-copy p {
  color: rgba(255, 255, 255, 0.74);
}

.products {
  background: var(--surface);
}

.product-table {
  display: grid;
  gap: 10px;
}

.product-row {
  display: grid;
  grid-template-columns: minmax(320px, 1.3fr) minmax(150px, 0.5fr) minmax(170px, 0.55fr) 140px;
  gap: 22px;
  align-items: center;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.product-name {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.tea-dot {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--tea), var(--gold));
}

.product-name h3 {
  font-size: 22px;
}

.product-name p,
.product-row div {
  color: var(--muted);
}

.product-row button {
  min-height: 42px;
  padding: 0 14px;
  background: var(--green);
}

.image-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.68fr);
  min-height: 620px;
  background: var(--dark);
  color: var(--white);
}

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

.feature-panel {
  align-self: center;
  padding: clamp(32px, 5vw, 70px);
}

.feature-panel h2,
.label-content h2,
.origin-card h2,
.quote-copy h2,
.faq h2 {
  margin-bottom: 20px;
}

.feature-panel p,
.feature-panel li {
  color: rgba(255, 255, 255, 0.76);
}

.feature-panel ul {
  display: grid;
  gap: 10px;
  margin: 26px 0 0;
  padding-left: 20px;
}

.private-label {
  display: grid;
  grid-template-columns: minmax(0, 0.74fr) minmax(0, 1.05fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
}

.private-label img,
.origin-card img {
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.label-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.label-options span {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--green);
  background: rgba(255, 255, 255, 0.48);
  font-weight: 800;
}

.origin {
  background: var(--paper-2);
}

.origin-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.82fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
}

.process-grid div {
  padding: 20px;
  border: 1px solid rgba(27, 23, 18, 0.12);
  border-radius: 8px;
  background: rgba(255, 250, 241, 0.7);
}

.process-grid strong,
.process-grid span {
  display: block;
}

.process-grid span {
  margin-top: 8px;
  color: var(--muted);
}

.seo-content {
  background: var(--surface);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.article-grid article {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.article-grid h3 {
  font-size: 23px;
}

.article-grid p {
  margin-top: 12px;
}

.article-grid a {
  display: inline-flex;
  margin-top: 20px;
  color: var(--tea);
  font-weight: 900;
}

.faq-list {
  display: grid;
  gap: 10px;
  margin-top: 28px;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

summary {
  cursor: pointer;
  padding: 18px 22px;
  font-size: 18px;
  font-weight: 900;
}

details p {
  padding: 0 22px 20px;
}

.quote {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(320px, 0.78fr);
  gap: clamp(28px, 6vw, 74px);
  background: #20281f;
  color: var(--white);
}

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

.quote-summary {
  margin-top: 28px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.quote-summary ul {
  margin: 10px 0 0;
  padding-left: 20px;
  color: rgba(255, 255, 255, 0.72);
}

.quote-form {
  display: grid;
  gap: 16px;
  padding: 28px;
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.quote-form label {
  display: grid;
  gap: 8px;
  color: #51463b;
  font-weight: 900;
}

.quote-form input,
.quote-form select,
.quote-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 13px 14px;
  color: var(--ink);
  background: #fffdfa;
  outline: none;
}

.quote-form input:focus,
.quote-form select:focus,
.quote-form textarea:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(196, 154, 86, 0.18);
}

.full {
  width: 100%;
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.76);
  background: #11130f;
}

.site-footer strong,
.site-footer span {
  display: block;
}

.site-footer a {
  color: var(--gold);
  font-weight: 900;
}

@media (max-width: 1060px) {
  .main-nav {
    display: none;
  }

  .solution-grid,
  .article-grid,
  .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .site-header {
    position: absolute;
  }

  .nav-cta {
    display: none;
  }

  .hero {
    min-height: 92vh;
    padding-top: 112px;
  }

  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(18, 15, 10, 0.38), rgba(18, 15, 10, 0.9)),
      linear-gradient(90deg, rgba(18, 15, 10, 0.46), rgba(18, 15, 10, 0.5));
  }

  .split-heading,
  .proof-band,
  .image-feature,
  .private-label,
  .origin-card,
  .quote {
    grid-template-columns: 1fr;
  }

  .image-feature {
    min-height: auto;
  }

  .image-feature img {
    min-height: 320px;
  }

  .private-label img {
    order: -1;
  }
}

@media (max-width: 580px) {
  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-metrics,
  .solution-grid,
  .article-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 66px 18px;
  }

  .solution-grid article {
    min-height: 210px;
  }

  .site-footer {
    display: grid;
  }
}