:root {
  --red: #b3261f;
  --deep-red: #7f1714;
  --gold: #c49a4c;
  --light-gold: #ead9ad;
  --cream: #fff7e8;
  --paper: #f5ead3;
  --white: #fffdf7;
  --ink: #2f241c;
  --muted: #6d5e50;
  --line: rgba(127, 23, 20, 0.16);
  --sage: #63745d;
  --stone: #6b7277;
  --shadow: 0 20px 60px rgba(95, 42, 28, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
  line-height: 1.7;
}

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

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 40px;
  border-bottom: 1px solid transparent;
  background: rgba(255, 247, 232, 0.88);
  backdrop-filter: blur(18px);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px rgba(70, 32, 24, 0.08);
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--deep-red);
  font-size: 20px;
  font-weight: 800;
}

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

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  border-radius: 8px;
  padding: 8px 14px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 700;
}

.site-nav a:hover {
  color: var(--deep-red);
  background: rgba(179, 38, 31, 0.08);
}

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

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--deep-red);
}

.section-band {
  position: relative;
  padding: 92px 40px;
  overflow: hidden;
}

.section-band > * {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  margin-right: auto;
  margin-left: auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.9fr);
  gap: 36px;
  align-items: center;
  min-height: calc(100svh - 112px);
  padding-top: 64px;
  background:
    linear-gradient(90deg, rgba(255, 247, 232, 0.96), rgba(255, 247, 232, 0.78)),
    url("/assets/images/paper-bg.jpg") center / cover;
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46%;
  height: 100%;
  background: url("/assets/images/herb-pattern.jpg") right bottom / cover no-repeat;
  content: "";
  opacity: 0.2;
}

.hero-copy,
.hero-visual,
.hero-metrics {
  max-width: 1180px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--red);
  font-size: 14px;
  font-weight: 800;
}

.hero h1 {
  margin: 0;
  color: var(--deep-red);
  font-size: 68px;
  line-height: 1.05;
  font-weight: 900;
}

.hero-position {
  max-width: 650px;
  margin: 22px 0 0;
  color: var(--ink);
  font-size: 28px;
  line-height: 1.32;
  font-weight: 800;
}

.hero-intro {
  max-width: 650px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-tags span,
.tab-panel span {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 12px;
  background: rgba(255, 253, 247, 0.78);
  color: var(--deep-red);
  font-weight: 800;
}

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

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 8px;
  padding: 0 20px;
  font-weight: 800;
}

.primary-action {
  border: 1px solid var(--deep-red);
  background: var(--deep-red);
  color: var(--white);
}

.secondary-action {
  border: 1px solid var(--gold);
  color: var(--deep-red);
  background: rgba(255, 253, 247, 0.66);
}

.hero-visual {
  position: relative;
  min-height: 520px;
}

.hero-store {
  position: absolute;
  right: 0;
  top: 16px;
  width: 88%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 10px solid rgba(255, 253, 247, 0.72);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-product {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 42%;
  max-height: 420px;
  object-fit: contain;
  filter: drop-shadow(0 20px 32px rgba(77, 30, 20, 0.24));
}

.hero-cups {
  position: absolute;
  right: 8%;
  bottom: 4px;
  width: 34%;
  filter: drop-shadow(0 16px 24px rgba(77, 30, 20, 0.18));
}

.hero-metrics {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.metric-card,
.principle-card,
.step-card,
.advantage-card,
.audience-card,
.moat-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 247, 0.86);
}

.metric-card {
  min-height: 112px;
  padding: 20px;
}

.metric-card strong {
  display: block;
  color: var(--deep-red);
  font-size: 28px;
  line-height: 1.1;
}

.metric-card span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-weight: 700;
}

.section-heading {
  margin-bottom: 38px;
}

.section-heading h2,
.partner-intro h2 {
  max-width: 820px;
  margin: 0;
  color: var(--deep-red);
  font-size: 42px;
  line-height: 1.22;
}

.section-heading p:not(.eyebrow),
.partner-intro p:not(.eyebrow) {
  max-width: 780px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.compact-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.compact-heading .eyebrow {
  min-width: 210px;
}

.mission-band {
  background: var(--white);
}

.mission-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  gap: 42px;
  align-items: center;
}

.mission-story {
  display: grid;
  gap: 22px;
}

.mission-story article {
  border-left: 4px solid var(--gold);
  padding-left: 22px;
}

.mission-story span {
  color: var(--sage);
  font-weight: 800;
}

.mission-story h3 {
  margin: 6px 0 8px;
  color: var(--ink);
  font-size: 25px;
}

.mission-story p,
.step-card p,
.advantage-card p,
.audience-card p,
.footprint-list p,
.moat-card p {
  margin: 0;
  color: var(--muted);
}

.mission-visual img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.principle-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 38px;
}

.principle-card {
  padding: 22px;
}

.principle-card span {
  display: block;
  color: var(--deep-red);
  font-weight: 900;
}

.principle-card p {
  margin: 10px 0 0;
  color: var(--muted);
}

.model-band {
  background: var(--paper);
}

.model-layout {
  display: grid;
  grid-template-columns: 0.82fr 1fr;
  gap: 36px;
  align-items: center;
}

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

.model-list {
  display: grid;
  gap: 14px;
}

.step-card {
  padding: 22px;
}

.step-card span {
  display: inline-block;
  color: var(--gold);
  font-weight: 900;
}

.step-card h3 {
  margin: 6px 0 0;
  color: var(--deep-red);
  font-size: 24px;
}

.step-card strong {
  display: block;
  margin: 4px 0 10px;
  color: var(--sage);
}

.advantage-band {
  background: var(--white);
}

.advantage-layout {
  display: grid;
  grid-template-columns: 0.75fr 1fr;
  gap: 30px;
  align-items: start;
}

.certificate-panel {
  display: grid;
  gap: 16px;
}

.certificate-panel img {
  width: 100%;
  border-radius: 8px;
  background: var(--cream);
  box-shadow: var(--shadow);
}

.certificate-panel img:last-child {
  max-height: 430px;
  object-fit: contain;
  padding: 18px;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.advantage-card {
  min-height: 238px;
  padding: 24px;
}

.advantage-card h3,
.audience-card h3,
.moat-card h3,
.footprint-list h3 {
  margin: 0 0 10px;
  color: var(--deep-red);
  font-size: 22px;
}

.product-band {
  background:
    linear-gradient(180deg, rgba(255, 247, 232, 0.92), rgba(245, 234, 211, 0.96)),
    url("/assets/images/cream-red-bg.jpg") center / cover;
}

.product-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(340px, 0.78fr);
  gap: 34px;
  align-items: center;
}

.product-art {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.product-art img {
  width: 100%;
  min-height: 320px;
  max-height: 470px;
  object-fit: contain;
  border-radius: 8px;
  background: rgba(255, 253, 247, 0.82);
  padding: 16px;
  box-shadow: var(--shadow);
}

.tab-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.tab-button {
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--muted);
  cursor: pointer;
  font-weight: 900;
}

.tab-button[aria-selected="true"] {
  border-color: var(--deep-red);
  background: var(--deep-red);
  color: var(--white);
}

.tab-panel {
  display: none;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.tab-panel.is-active {
  display: grid;
}

.tab-panel span {
  display: flex;
  align-items: center;
  min-height: 64px;
  color: var(--ink);
}

.audience-band {
  background: var(--white);
}

.audience-grid,
.moat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.audience-card,
.moat-card {
  min-height: 190px;
  padding: 22px;
}

.value-icons {
  width: min(700px, 100%);
  margin-top: 34px;
  opacity: 0.75;
}

.footprint-band {
  background: var(--paper);
}

.footprint-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 430px;
  gap: 30px;
  align-items: center;
}

.footprint-layout > img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.footprint-list {
  display: grid;
  gap: 14px;
}

.footprint-list article {
  border-left: 4px solid var(--deep-red);
  padding: 4px 0 4px 18px;
}

.partner-band {
  color: var(--white);
  background: var(--deep-red);
}

.partner-band::before {
  position: absolute;
  inset: 0;
  background: url("/assets/images/red-bg.jpg") center / cover;
  content: "";
  opacity: 0.26;
}

.partner-intro h2,
.partner-intro .eyebrow,
.partner-intro p {
  color: var(--white);
}

.partner-intro p {
  opacity: 0.82;
}

.moat-grid {
  margin-top: 30px;
}

.moat-card {
  border-color: rgba(255, 253, 247, 0.18);
  background: rgba(255, 253, 247, 0.08);
}

.moat-card h3,
.moat-card p {
  color: var(--white);
}

.moat-card p {
  opacity: 0.82;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.62fr) minmax(360px, 0.8fr);
  gap: 28px;
  align-items: stretch;
  margin-top: 34px;
}

.contact-visual img {
  width: 100%;
  height: 100%;
  max-height: 620px;
  object-fit: cover;
  object-position: center top;
  border-radius: 8px;
}

.contact-form {
  display: grid;
  gap: 16px;
  border: 1px solid rgba(255, 253, 247, 0.2);
  border-radius: 8px;
  padding: 28px;
  background: rgba(255, 253, 247, 0.1);
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form span {
  font-weight: 800;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(255, 253, 247, 0.28);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--ink);
  background: var(--white);
}

.contact-form textarea {
  resize: vertical;
}

.form-action {
  width: 100%;
  border-color: var(--gold);
  background: var(--gold);
  color: var(--deep-red);
  cursor: pointer;
}

.form-status {
  min-height: 26px;
  margin: 0;
  color: var(--light-gold);
  font-weight: 800;
}

.loading-state,
.error-state {
  display: grid;
  min-height: calc(100svh - 140px);
  place-items: center;
  padding: 60px 24px;
  color: var(--deep-red);
  text-align: center;
}

.loader-mark {
  width: 44px;
  height: 44px;
  border: 3px solid rgba(179, 38, 31, 0.2);
  border-top-color: var(--deep-red);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

.text-link {
  color: var(--deep-red);
  font-weight: 900;
  text-decoration: underline;
}

.geo-static-content {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.knowledge-band {
  background:
    linear-gradient(180deg, rgba(255, 253, 247, 0.96), rgba(245, 234, 211, 0.88)),
    url("/assets/images/paper-bg.jpg") center / cover;
}

.knowledge-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1fr);
  gap: 22px;
  align-items: start;
}

.fact-list,
.faq-list {
  display: grid;
  gap: 12px;
}

.fact-item,
.faq-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 20px;
  background: rgba(255, 253, 247, 0.88);
}

.fact-item p,
.faq-item p {
  margin: 0;
  color: var(--muted);
}

.faq-item summary {
  color: var(--deep-red);
  cursor: pointer;
  font-size: 18px;
  font-weight: 900;
}

.faq-item p {
  margin-top: 10px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 40px;
  color: var(--muted);
  background: var(--white);
}

.site-footer div {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-footer img {
  width: 38px;
  height: 38px;
  object-fit: contain;
}

.site-footer p {
  margin: 0;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 1060px) {
  .hero,
  .mission-grid,
  .model-layout,
  .advantage-layout,
  .product-layout,
  .knowledge-layout,
  .footprint-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 440px;
  }

  .hero-metrics,
  .audience-grid,
  .moat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footprint-layout {
    gap: 22px;
  }
}

@media (max-width: 760px) {
  .site-header {
    height: 64px;
    padding: 0 18px;
  }

  .brand-link span {
    font-size: 18px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 64px;
    right: 18px;
    left: 18px;
    display: none;
    grid-template-columns: 1fr;
    gap: 4px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 8px;
    background: var(--white);
    box-shadow: var(--shadow);
  }

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

  .section-band {
    padding: 64px 18px;
  }

  .hero {
    min-height: calc(100svh - 96px);
    padding-top: 42px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-position {
    font-size: 22px;
  }

  .hero-intro,
  .section-heading p:not(.eyebrow),
  .partner-intro p:not(.eyebrow) {
    font-size: 16px;
  }

  .hero-visual {
    min-height: 360px;
  }

  .hero-store {
    width: 96%;
  }

  .hero-product {
    width: 45%;
  }

  .hero-cups {
    width: 42%;
    right: 0;
  }

  .hero-metrics,
  .principle-row,
  .advantage-grid,
  .product-art,
  .tab-panel,
  .audience-grid,
  .moat-grid {
    grid-template-columns: 1fr;
  }

  .compact-heading {
    display: block;
  }

  .section-heading h2,
  .partner-intro h2 {
    font-size: 30px;
  }

  .mission-story h3 {
    font-size: 22px;
  }

  .product-art img {
    min-height: 240px;
  }

  .site-footer {
    display: grid;
    padding: 24px 18px;
  }
}