* { box-sizing: border-box; }

:root {
  --bg: #f3f6f4;
  --surface: #ffffff;
  --ink: #17211c;
  --muted: #5e6a62;
  --line: #d8e1d9;
  --green: #184d3a;
  --green-2: #2d7257;
  --accent: #d97a2b;
  --accent-soft: #fff0e2;
  --shadow: 0 18px 40px rgba(17, 31, 24, 0.08);
  --radius: 10px;
}

html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #eef4ee 0%, #f7f9f7 100%);
  font-family: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
h1, h2, h3, p { margin: 0; }

.container {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(247, 249, 247, 0.84);
  border-bottom: 1px solid rgba(216, 225, 217, 0.9);
}

.topbar-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--green), var(--green-2));
  box-shadow: 0 10px 20px rgba(24, 77, 58, 0.25);
  position: relative;
  flex: 0 0 auto;
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 9px 7px auto;
  height: 8px;
  border: 2px solid rgba(255, 255, 255, 0.92);
  border-bottom: 0;
  border-radius: 999px 999px 0 0;
}

.brand-mark::after {
  inset: 20px 7px auto;
  height: 6px;
  opacity: 0.85;
}

.brand-text strong {
  display: block;
  font-size: 15px;
  line-height: 1.15;
}

.brand-text span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--green);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  transition: transform 0.16s ease, background 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

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

.btn.primary {
  background: var(--green);
  color: #fff;
  box-shadow: 0 12px 24px rgba(24, 77, 58, 0.18);
}

.btn.primary:hover { background: #123a2c; }

.btn.secondary {
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
}

.btn.secondary:hover { border-color: #b9c9bd; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.section {
  padding: 72px 0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.section-head h1,
.section-head h2 {
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.15;
}

.section-head p {
  max-width: 60ch;
  color: var(--muted);
}

.hero {
  padding: 34px 0 20px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.03fr 0.97fr;
  gap: 26px;
  align-items: center;
}

.hero-copy h1 {
  margin-top: 18px;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy p {
  max-width: 60ch;
  margin-top: 16px;
  color: var(--muted);
  font-size: 17px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.trust-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.trust {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
}

.trust strong {
  display: block;
  font-size: 20px;
  line-height: 1.1;
  color: var(--green);
}

.trust span {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
}

.visual {
  position: relative;
  min-height: 560px;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(216, 225, 217, 0.85);
  box-shadow: var(--shadow);
  background:
    radial-gradient(circle at 78% 18%, rgba(217, 122, 43, 0.18), transparent 20%),
    linear-gradient(145deg, #dfe9dd 0%, #f9fbf8 34%, #dde8df 100%);
}

.visual::before {
  content: "";
  position: absolute;
  inset: auto -10% -18% -10%;
  height: 56%;
  background:
    linear-gradient(180deg, rgba(24, 77, 58, 0), rgba(24, 77, 58, 0.03)),
    linear-gradient(160deg, #aac89d 0%, #6f9d7e 52%, #3d6e57 100%);
  clip-path: polygon(0 24%, 100% 0, 100% 100%, 0 100%);
}

.visual-badge {
  position: absolute;
  left: 20px;
  top: 20px;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(216, 225, 217, 0.9);
  font-size: 12px;
  font-weight: 700;
  z-index: 1;
}

.visual-badge i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

.visual-art {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: end center;
  padding: 22px;
}

.visual svg,
.product-media svg {
  width: 100%;
  height: 100%;
}

.haze {
  position: absolute;
  inset: auto 0 0;
  height: 22%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.35));
  pointer-events: none;
}

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

.card {
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 10px 20px rgba(17, 31, 24, 0.04);
}

.icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--accent-soft);
  border: 1px solid #f2d2b5;
  display: grid;
  place-items: center;
  color: var(--accent);
  font-size: 20px;
  font-weight: 900;
}

.card h3 {
  margin-top: 12px;
  font-size: 18px;
}

.card p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.products {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.product {
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.product-media {
  min-height: 280px;
  padding: 18px;
  background: linear-gradient(180deg, #edf4ec 0%, #f9fbf8 100%);
  border-bottom: 1px solid var(--line);
}

.product-body {
  padding: 22px;
}

.product-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #a65816;
  font-size: 12px;
  font-weight: 800;
}

.product h3 {
  margin-top: 12px;
  font-size: 24px;
}

.product p {
  margin-top: 10px;
  color: var(--muted);
}

.specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.spec {
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: #324037;
  font-size: 12px;
  font-weight: 700;
}

.bullet-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.bullet-list li {
  position: relative;
  padding-left: 18px;
  margin-top: 8px;
  color: #3a473f;
  font-size: 14px;
}

.bullet-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
}

.product-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.applications {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 18px;
  align-items: start;
}

.panel {
  padding: 24px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.tag {
  padding: 8px 12px;
  border-radius: 999px;
  background: #f4f7f3;
  border: 1px solid var(--line);
  color: #334037;
  font-size: 13px;
  font-weight: 700;
}

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

.step {
  padding: 18px;
  border-radius: 14px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbf8 100%);
  border: 1px solid var(--line);
}

.step strong {
  display: block;
  color: var(--green);
  font-size: 18px;
}

.step span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.comparison {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
}

.comparison th,
.comparison td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 14px;
}

.comparison th {
  background: #f4f8f4;
  color: var(--green);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.comparison tr:last-child td { border-bottom: 0; }

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 18px;
}

.contact-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.contact-item {
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
}

.contact-item small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact-item strong {
  display: block;
  margin-top: 5px;
  font-size: 16px;
  word-break: break-word;
}

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

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

label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: #37443c;
}

input,
textarea,
select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 11px 14px;
  background: #fff;
  color: var(--ink);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid rgba(45, 114, 87, 0.16);
  border-color: #9fc0b0;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

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

.footer {
  padding: 28px 0 36px;
  color: var(--muted);
  font-size: 13px;
}

.footer-inner {
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.page-hero {
  padding: 36px 0 20px;
}

.page-hero-band {
  padding: 64px 0;
  border-bottom: 1px solid rgba(216, 225, 217, 0.75);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.28));
}

.page-hero-band h1 {
  margin-top: 16px;
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.08;
}

.page-hero-band p {
  max-width: 68ch;
  margin-top: 14px;
  color: var(--muted);
  font-size: 17px;
}

.page-hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 24px;
  align-items: center;
}

.hero-image {
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow);
}

.stack {
  display: grid;
  gap: 18px;
}

.muted-box {
  padding: 18px 20px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
}

.muted-box strong {
  display: block;
  color: var(--green);
  font-size: 18px;
}

.muted-box p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.section-soft {
  background: rgba(255, 255, 255, 0.38);
}

@media (max-width: 980px) {
  .hero-grid,
  .page-hero-grid,
  .applications,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .visual {
    min-height: 440px;
  }

  .grid-4,
  .products,
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .container { width: min(100% - 24px, 1180px); }

  .topbar-inner {
    align-items: start;
    padding: 12px 0;
    flex-direction: column;
  }

  .nav {
    justify-content: flex-start;
    gap: 14px;
  }

  .brand-text span { white-space: normal; }
  .hero { padding-top: 18px; }
  .hero-actions,
  .product-actions,
  .form-actions { flex-direction: column; }
  .btn { width: 100%; }

  .trust-row,
  .grid-4,
  .products,
  .steps,
  .field-grid {
    grid-template-columns: 1fr;
  }

  .section { padding: 58px 0; }
  .section-head { flex-direction: column; align-items: start; }
  .visual { min-height: 360px; border-radius: 18px; }
  .page-hero-band { padding: 46px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}