:root {
  --color-orange: #E8740C;
  --color-orange-dark: #c4630a;
  --color-green: #6B9B7A;
  --color-green-dark: #557d63;
  --color-bg: #FDF8F0;
  --color-bg-alt: #F7EFE1;
  --color-text: #2D2016;
  --color-text-soft: #6b5d4e;
  --color-highlight: rgba(244, 215, 88, 0.3);
  --color-deep: #1a3a2a;
  --color-border: #ECE0CC;
  --radius: 20px;
  --radius-lg: 24px;
  --max-width: 1080px;
  --nav-h: 64px;
  --font-serif: "Noto Serif SC", "Songti SC", "PingFang SC", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 1.1rem;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-serif);
  margin: 0;
  font-weight: 700;
  color: var(--color-text);
}

p { margin: 0 0 1em; }

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

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

mark.highlight {
  background: var(--color-highlight);
  padding: 0.1em 0.3em;
  border-radius: 4px 8px 4px 8px;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

/* ---------- Decorative blobs ---------- */
.blob {
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}

.blob-orange { background: rgba(232, 116, 12, 0.28); }
.blob-green { background: rgba(107, 155, 122, 0.28); }

.blob-pos-1 { top: -60px; left: -80px; }
.blob-pos-2 { bottom: -60px; right: -80px; }

/* ---------- Watermark ---------- */
.watermark {
  position: absolute;
  top: -10px;
  right: 8px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(7rem, 22vw, 16rem);
  line-height: 1;
  color: var(--color-text);
  opacity: 0.06;
  z-index: 0;
  pointer-events: none;
  user-select: none;
}

.watermark-center {
  top: 0;
  left: 50%;
  right: auto;
  transform: translateX(-50%);
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Top nav (desktop) ---------- */
.topnav {
  display: none;
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(253, 248, 240, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.topnav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.brand-sub {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--color-text-soft);
}

.topnav-links {
  display: flex;
  gap: 36px;
}

.topnav-links a {
  font-size: 0.95rem;
  color: var(--color-text-soft);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.topnav-links a:hover,
.topnav-links a.active {
  color: var(--color-orange);
  border-color: var(--color-orange);
}

/* ---------- Main / tab panels ---------- */
main {
  min-height: 100vh;
  padding-bottom: calc(var(--nav-h) + 16px);
}

.tab-panel {
  display: none;
  position: relative;
  overflow: hidden;
  animation: fadeIn 0.3s ease;
}

.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-inner {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 24px 96px;
  z-index: 1;
}

.section-title {
  font-size: 1.7rem;
  margin-bottom: 40px;
  position: relative;
  padding-left: 18px;
  border-left: 4px solid var(--color-orange);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 72px 24px 64px;
  text-align: center;
}

.hero-eyebrow {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: var(--color-orange);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.hero-title {
  font-size: 1.95rem;
  font-weight: 900;
  line-height: 1.5;
  margin-bottom: 18px;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--color-text-soft);
  margin-bottom: 44px;
}

.trust-list {
  list-style: none;
  padding: 0;
  margin: 0 0 44px;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.trust-list li {
  background: #fff;
  border-left: 3px solid var(--color-orange);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 0.92rem;
  color: var(--color-text);
  display: flex;
  gap: 10px;
  box-shadow: 0 6px 20px rgba(45, 32, 22, 0.06);
}

.trust-icon {
  color: var(--color-orange);
  font-weight: 700;
  flex-shrink: 0;
}

.btn {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 999px;
  font-family: var(--font-serif);
  font-size: 0.98rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.2s;
}

.btn-primary {
  background: var(--color-orange);
  color: #fff;
  box-shadow: 0 10px 24px rgba(232, 116, 12, 0.32);
}

.btn-primary:hover {
  background: var(--color-orange-dark);
  transform: translateY(-1px);
}

.btn-outline {
  border: 1.5px solid var(--color-orange);
  color: var(--color-orange-dark);
  background: transparent;
  width: 100%;
  text-align: center;
}

.btn-outline:hover {
  background: var(--color-orange);
  color: #fff;
}

.hero-cta { margin-top: 4px; }

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-bottom: 64px;
}

.about-photo-wrap {
  display: flex;
  justify-content: center;
}

.about-photo {
  width: 180px;
  height: 180px;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid #fff;
  box-shadow: 0 10px 30px rgba(45, 32, 22, 0.14);
}

.about-story p { color: var(--color-text); }

.story-emphasis {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--color-text);
}

.principles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 56px;
}

.principle-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  box-shadow: 0 8px 24px rgba(45, 32, 22, 0.06);
}

.principle-card.accent-orange { border-top: 3px solid var(--color-orange); }
.principle-card.accent-green { border-top: 3px solid var(--color-green); }

.principle-card h3 {
  font-size: 1.04rem;
  margin-bottom: 8px;
}

.principle-card p {
  font-size: 0.9rem;
  color: var(--color-text-soft);
  margin: 0;
}

.testimonial-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.testimonial-strip blockquote {
  margin: 0;
  padding: 22px;
  background: #fff;
  border-radius: var(--radius-lg);
  font-size: 0.92rem;
  color: var(--color-text-soft);
  font-style: normal;
  box-shadow: 0 8px 24px rgba(45, 32, 22, 0.06);
}

.testimonial-strip blockquote.accent-orange { border-left: 3px solid var(--color-orange); }
.testimonial-strip blockquote.accent-green { border-left: 3px solid var(--color-green); }

.testimonial-strip cite {
  display: block;
  margin-top: 12px;
  font-size: 0.82rem;
  color: var(--color-green-dark);
}

/* ---------- Products ---------- */
.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.product-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 24px rgba(45, 32, 22, 0.06);
}

.product-card.accent-orange { border-top: 4px solid var(--color-orange); }
.product-card.accent-green { border-top: 4px solid var(--color-green); }

.product-name {
  font-size: 1.18rem;
  margin-bottom: 8px;
}

.product-tagline {
  font-size: 0.88rem;
  color: var(--color-text-soft);
  margin-bottom: 18px;
}

.product-points {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-grow: 1;
}

.product-points li {
  font-size: 0.88rem;
  padding-left: 18px;
  position: relative;
}

.product-points li::before {
  content: "·";
  position: absolute;
  left: 4px;
  color: var(--color-orange);
  font-weight: 700;
}

.product-price {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 900;
  color: var(--color-orange);
  margin-bottom: 20px;
}

.product-price span {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-text-soft);
}

/* ---------- Contact ---------- */
.contact-inner {
  text-align: center;
}

.contact-lead {
  color: var(--color-text-soft);
  max-width: 480px;
  margin: 0 auto 36px;
}

.qrcode-wrap {
  display: inline-block;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 26px;
  margin-bottom: 28px;
  box-shadow: 0 10px 30px rgba(45, 32, 22, 0.08);
}

.qrcode-img {
  width: 220px;
  height: 220px;
  object-fit: cover;
  border-radius: 8px;
  margin: 0 auto 12px;
}

.qrcode-caption {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-soft);
}

.contact-note {
  font-size: 0.88rem;
  color: var(--color-green-dark);
}

/* ---------- Bottom tab nav (mobile) ---------- */
.bottomnav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  background: rgba(253, 248, 240, 0.97);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--color-border);
  padding-bottom: env(safe-area-inset-bottom);
}

.bottomnav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 8px 0 6px;
  font-size: 0.68rem;
  color: var(--color-text-soft);
}

.bottomnav-item .tab-icon {
  width: 22px;
  height: 22px;
}

.bottomnav-item.active {
  color: var(--color-orange);
}

/* ---------- Breakpoint: desktop ---------- */
@media (min-width: 900px) {
  .topnav { display: block; }
  .bottomnav { display: none; }
  main { padding-bottom: 0; }

  .hero { padding: 110px 24px 96px; }
  .hero-title { font-size: 2.6rem; }

  .section-inner { padding: 88px 24px 120px; }

  .about-grid {
    grid-template-columns: 220px 1fr;
    align-items: start;
  }

  .principles { grid-template-columns: repeat(3, 1fr); }

  .testimonial-strip { grid-template-columns: repeat(2, 1fr); }

  .product-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1200px) {
  .product-grid { grid-template-columns: repeat(4, 1fr); }
}