:root {
  --bg: #f4fbf8;
  --surface: #ffffff;
  --surface-soft: #eef8f4;
  --text: #16324f;
  --muted: #5d7489;
  --blue: #0f6bd8;
  --blue-deep: #0a4fa7;
  --green: #0ea37b;
  --green-deep: #08735a;
  --line: rgba(22, 50, 79, 0.10);
  --shadow: 0 24px 60px rgba(14, 35, 56, 0.10);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  color: var(--text);
  background: #e8f4ee url(../images/bg.jpg) no-repeat center top fixed;
  background-size: cover;
  min-width: 320px;
}

.page-shell {
  overflow: hidden;
  min-height: 100vh;
}

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

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


.container {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #fff;
  border-bottom: 1px solid rgba(22, 50, 79, 0.08);
}

.topbar-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark strong {
  display: block;
  font-size: 18px;
  letter-spacing: 0.02em;
}

.brand-mark p {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 78px;
  height: 46px;
  padding: 0 16px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, var(--green), var(--blue));
  box-shadow: 0 12px 30px rgba(14, 163, 123, 0.28);
  font-weight: 700;
}

.topbar-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.topbar-links a {
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(14, 163, 123, 0.08);
  color: var(--green-deep);
  font-size: 14px;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.topbar-links a:hover {
  transform: translateY(-1px);
  background: rgba(15, 107, 216, 0.10);
  color: var(--blue-deep);
}
main {
  max-width: 1400px;
  margin: 0 auto;
  background: rgba(255,255,255,0.5);
  padding: 0 20px;
}


.hero {
  position: relative;
  padding: 80px 0 56px;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: auto;
  border-radius: 50%;
  filter: blur(20px);
  opacity: 0.35;
  pointer-events: none;
}

.hero-bg-a {
  width: 320px;
  height: 320px;
  left: -80px;
  top: 110px;
  background: rgba(14, 163, 123, 0.28);
}

.hero-bg-b {
  width: 420px;
  height: 420px;
  right: -140px;
  top: -40px;
  background: rgba(15, 107, 216, 0.22);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 36px;
  align-items: center;
}

.hero-copy h1 {
  margin: 16px 0 18px;
  font-size: clamp(40px, 5vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.eyebrow,
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(14, 163, 123, 0.10);
  color: var(--green-deep);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-text {
  max-width: 700px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--green), var(--blue));
  box-shadow: 0 14px 28px rgba(14, 163, 123, 0.26);
}

.btn-secondary {
  color: var(--blue-deep);
  background: #fff;
  border: 1px solid rgba(15, 107, 216, 0.18);
  box-shadow: 0 12px 24px rgba(14, 35, 56, 0.08);
}

.btn-plain {
  width: fit-content;
  margin-top: 18px;
  padding: 0 0 2px;
  min-height: auto;
  border-radius: 0;
  color: var(--blue-deep);
  background: transparent;
  border-bottom: 2px solid rgba(15, 107, 216, 0.22);
  box-shadow: none;
}

.btn-plain:hover {
  color: var(--green-deep);
  border-bottom-color: rgba(14, 163, 123, 0.55);
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.hero-points div,
.trust-item,
.feature-card,
.cooperate-card,
.certificate-card,
.certificate-mini,
.contact-box,
.section-panel,
.channel-card {
  background: #fff;
  border: 1px solid rgba(22, 50, 79, 0.08);
  box-shadow: var(--shadow);
}

.hero-points div {
  padding: 18px 18px 16px;
  border-radius: var(--radius-md);
}

.hero-points strong {
  display: block;
  font-size: 15px;
  margin-bottom: 6px;
}

.hero-points span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.hero-visual {
  position: relative;
  min-height: 560px;
}

.product-card {
  position: relative;
  border-radius: 36px;
  overflow: hidden;
  background: linear-gradient(180deg, #fff 0%, #edf9f4 100%);
  box-shadow: 0 30px 70px rgba(14, 35, 56, 0.16);
  border: 1px solid rgba(14, 163, 123, 0.10);
}

.product-card img {
  width: 100%;
  height: 470px;
  object-fit: cover;
  object-position: center center;
}

.product-card img.hero-product-image {
  object-fit: contain;
  object-position: center center;
  transform: scale(0.75);
  background: linear-gradient(180deg, #ffffff 0%, #edf9f4 100%);
}

.product-card-copy {
  padding: 24px;
}

.product-tag {
  display: inline-flex;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(14, 163, 123, 0.10);
  color: var(--green-deep);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.product-card-copy h2 {
  margin: 14px 0 10px;
  font-size: 28px;
  line-height: 1.25;
}

.product-card-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.floating-card {
  position: absolute;
  right: -10px;
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  border-radius: 20px;
  min-width: 220px;
}

.floating-card strong {
  font-size: 14px;
}

.floating-card span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.card-top {
  top: 24px;
}

.card-bottom {
  bottom: 10px;
  padding-top: 84px;
}

.trust-bar {
  padding: 0 0 20px;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.trust-item {
  padding: 22px;
  border-radius: var(--radius-lg);
}

.trust-item span {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  margin-bottom: 14px;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--green), var(--blue));
}

.trust-item strong {
  display: block;
  margin-bottom: 8px;
  font-size: 17px;
}

.trust-item p,
.feature-card p,
.cooperate-card p,
.contact-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.section {
  padding: 76px 0;
}

.split-grid,
.contact-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 28px;
  align-items: center;
}

.section-copy h2,
.section-heading h2,
.contact-copy h2 {
  margin: 14px 0 18px;
  font-size: clamp(30px, 3.6vw, 46px);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.section-copy p,
.section-heading p {
  color: var(--muted);
  line-height: 1.9;
  font-size: 17px;
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: grid;
  gap: 12px;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--text);
  line-height: 1.7;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 1px;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--green), var(--blue));
}

.section-panel {
  border-radius: 28px;
  overflow: hidden;
  padding: 18px;
}

.section-panel img {
  width: 100%;
  border-radius: 20px;
}

.section-panel-text {
  display: grid;
  gap: 14px;
  background: linear-gradient(135deg, rgba(14, 163, 123, 0.10), rgba(15, 107, 216, 0.12));
  border: 1px solid rgba(15, 107, 216, 0.12);
}

.text-stack {
  padding: 18px 20px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(22, 50, 79, 0.08);
}

.text-stack h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.text-stack p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 24px;
}

.feature-grid,
.gallery-grid,
.certificate-grid,
.sub-grid,
.cooperate-grid,
.channel-grid {
  display: grid;
  gap: 18px;
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card {
  padding: 24px;
  border-radius: var(--radius-lg);
}

.feature-card h3,
.cooperate-card h3,
.certificate-card h3,
.certificate-mini h3 {
  margin: 0 0 12px;
  font-size: 20px;
}

.feature-card p {
  font-size: 15px;
}

.gallery-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.gallery-grid figure {
  margin: 0;
  border-radius: 22px;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  box-shadow: var(--shadow);
  border: 1px solid rgba(22, 50, 79, 0.08);
  background: #fff;
}

.gallery-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.certificate-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.certificate-card {
  padding: 18px;
  border-radius: var(--radius-lg);
}

.certificate-card img {
  width: 100%;
  border-radius: 14px;
  margin-top: 10px;
}

.sub-grid {
  margin-top: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.certificate-mini {
  padding: 18px;
  border-radius: var(--radius-lg);
}

.mini-images {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.mini-images img {
  border-radius: 14px;
  width: 100%;
}

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

.cooperate-card {
  padding: 28px;
  border-radius: 26px;
}

.cooperate-meta {
  display: grid;
  gap: 10px;
  margin: 20px 0;
}

.cooperate-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 14px;
  background: rgba(14, 163, 123, 0.08);
  color: var(--green-deep);
}

.channel-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.channel-card {
  display: grid;
  gap: 8px;
  padding: 20px;
  border-radius: 20px;
  min-height: 132px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.channel-card:hover {
  transform: translateY(-2px);
}

.channel-card strong {
  font-size: 18px;
}

.channel-card span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.btn-full {
  width: 100%;
}

.section-contact {
  padding-bottom: 88px;
}

.contact-copy p {
  font-size: 16px;
}

.contact-box {
  margin-top: 22px;
  padding: 20px;
  border-radius: 24px;
  display: grid;
  gap: 10px;
}

.contact-box strong {
  font-size: 18px;
}

.contact-map {
  padding: 16px;
  border-radius: 28px;
  background: #fff;
  box-shadow: var(--shadow);
  border: 1px solid rgba(22, 50, 79, 0.08);
}

.contact-map img {
  width: 100%;
  border-radius: 18px;
}

.footer {
  padding: 28px 0 34px;
  border-top: 1px solid rgba(22, 50, 79, 0.08);
  background: #fff;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.footer-inner p {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-links img {
  width: 18px;
  height: 18px;
}

@media (max-width: 1100px) {
  .hero-grid,
  .split-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: auto;
    order: -1;
  }

  .trust-grid,
  .feature-grid,
  .gallery-grid,
  .certificate-grid,
  .cooperate-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, 1000px);
  }

  .topbar-inner,
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .topbar-links {
    justify-content: flex-start;
  }

  .hero {
    padding: 54px 0 40px;
  }

  .hero-copy h1 {
    font-size: 34px;
  }

  .hero-text {
    font-size: 16px;
  }

  .hero-points,
  .trust-grid,
  .feature-grid,
  .gallery-grid,
  .certificate-grid,
  .sub-grid,
  .cooperate-grid,
  .channel-grid {
    grid-template-columns: 1fr;
  }

  .product-card img {
    height: 340px;
  }

  .product-card img.hero-product-image {
    object-fit: contain;
    transform: scale(0.75);
    object-position: center center;
  }

  .floating-card {
    position: static;
    margin-top: 14px;
  }

  .hero-visual {
    display: grid;
    gap: 14px;
  }

  .section {
    padding: 54px 0;
  }

  .section-copy h2,
  .section-heading h2,
  .contact-copy h2 {
    font-size: 28px;
  }
}