:root {
  --bg: #061b18;
  --bg-soft: #0c2823;
  --panel: #ffffff;
  --soft: #f2f7f5;
  --line: #dce8e4;
  --ink: #12201e;
  --muted: #5e706b;
  --green: #0fb981;
  --mint: #9af5d5;
  --orange: #f2a02d;
  --blue: #255f8f;
  --shadow: 0 24px 70px rgba(6, 27, 24, 0.16);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--soft);
  letter-spacing: 0;
}

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

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

.container {
  width: min(1140px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  background: rgba(6, 27, 24, 0.86);
  border-bottom: 1px solid rgba(154, 245, 213, 0.16);
  backdrop-filter: blur(18px);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
}

.logo img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 15px;
}

.nav-links a:hover {
  color: #fff;
}

.hero {
  position: relative;
  min-height: 100svh;
  padding: 108px 0 76px;
  overflow: hidden;
  color: #fff;
  background: var(--bg);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 22%, rgba(154, 245, 213, 0.28), transparent 30%),
    linear-gradient(115deg, #071b1a 0%, #113d32 46%, #16b98a 100%);
}

.hero-bg::after {
  position: absolute;
  right: -8vw;
  bottom: -20vw;
  width: 55vw;
  height: 55vw;
  content: "";
  background: rgba(255, 255, 255, 0.09);
  border-radius: 50%;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.85fr);
  align-items: center;
  gap: clamp(32px, 6vw, 84px);
  min-height: calc(100svh - 184px);
}

.hero-copy {
  min-width: 0;
  max-width: 650px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--mint);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 600px;
  margin-bottom: 24px;
  font-size: clamp(44px, 5.2vw, 66px);
  line-height: 1;
  word-break: break-all;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.16;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.hero-text {
  max-width: 630px;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.76);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.75;
}

.hero-actions,
.cta-buttons,
.link-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn,
.cta-buttons a,
.link-buttons a,
.quick-grid a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  border-radius: 8px;
  font-weight: 800;
}

.btn-primary {
  color: var(--bg);
  background: var(--mint);
}

.btn-light {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.32);
}

.small-note {
  max-width: 650px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
  line-height: 1.7;
}

.hero-phone {
  display: grid;
  place-items: center;
  min-width: 0;
}

.hero-phone img {
  width: min(100%, 510px);
  filter: drop-shadow(0 32px 40px rgba(0, 0, 0, 0.26));
}

.quick-links {
  position: relative;
  z-index: 5;
  margin-top: -34px;
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.quick-grid a {
  color: #0c3f33;
  background: #eefbf6;
  border: 1px solid #cceee2;
}

.section {
  padding: clamp(68px, 9vw, 110px) 0;
  background: #fff;
  border-top: 1px solid var(--line);
}

.feature-row,
.about-grid,
.product-grid,
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card,
.about-grid article,
.product-grid article,
.faq-list details {
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 34px rgba(6, 27, 24, 0.06);
}

.feature-card {
  min-height: 260px;
  background: linear-gradient(180deg, #ffffff, #f4faf8);
}

.feature-num {
  display: grid;
  place-items: center;
  width: 46px;
  height: 36px;
  margin-bottom: 28px;
  color: #fff;
  background: var(--green);
  border-radius: 8px;
  font-weight: 900;
}

.feature-card p,
.copy-block p,
.about-grid p,
.product-grid p,
.proof-grid p,
.faq-list p,
.download-cta p,
.section-title p {
  color: var(--muted);
  line-height: 1.75;
}

.split-section {
  background: #f7fbfa;
}

.split-section.reverse {
  background: #fff;
}

.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.8fr);
  align-items: center;
  gap: clamp(28px, 5vw, 80px);
}

.copy-block {
  max-width: 650px;
}

.link-buttons {
  margin-top: 28px;
}

.link-buttons a {
  color: var(--green);
  border: 1px solid var(--green);
}

.link-buttons a.active {
  color: #fff;
  background: var(--green);
  box-shadow: 0 14px 26px rgba(15, 185, 129, 0.22);
}

.device-panel {
  display: grid;
  place-items: center;
  padding: 28px;
  background: linear-gradient(145deg, #ffffff, #eaf7f2);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.device-panel img {
  max-height: 520px;
}

.device-panel.alt {
  background: linear-gradient(145deg, #eef6ff, #f9fcff);
}

.section-title {
  max-width: 760px;
  margin: 0 auto 40px;
  text-align: center;
}

.about-section {
  background: #f4f9f7;
}

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

.gallery-section {
  background: #fff;
}

.gallery-grid div {
  display: grid;
  place-items: center;
  min-height: 340px;
  padding: 26px;
  background: #f2f7f5;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.gallery-grid img {
  max-height: 360px;
}

.product-section {
  background: #f7fbfa;
}

.proof-section {
  padding: 80px 0;
  color: #fff;
  background: linear-gradient(115deg, #071b1a, #103b33);
}

.proof-grid {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  align-items: center;
  gap: 36px;
}

.proof-card {
  display: grid;
  place-items: center;
  min-height: 220px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
}

.proof-card img {
  width: 120px;
  height: 120px;
  border-radius: 26px;
}

.proof-grid h2 {
  color: #fff;
}

.proof-grid p {
  max-width: 760px;
  color: rgba(255, 255, 255, 0.74);
}

.faq-section {
  background: #fff;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 920px;
  margin: 0 auto;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 850;
}

.faq-list p {
  margin: 14px 0 0;
}

.download-cta {
  padding: clamp(72px, 10vw, 120px) 0;
  color: #fff;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(15, 185, 129, 0.22), rgba(37, 95, 143, 0.24)),
    var(--bg);
}

.download-cta h2 {
  color: #fff;
}

.download-cta p {
  color: rgba(255, 255, 255, 0.72);
}

.cta-buttons {
  justify-content: center;
  margin-top: 34px;
}

.cta-buttons a {
  color: var(--bg);
  background: #fff;
}

.site-footer {
  padding: 36px 20px;
  color: #8a9995;
  text-align: center;
  background: #061b18;
  font-size: 13px;
}

.site-footer p {
  margin: 6px 0;
}

@media (max-width: 900px) {
  .site-header {
    position: static;
  }

  .nav-wrap {
    justify-content: center;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 58px;
  }

  .hero-grid,
  .split-grid,
  .proof-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    min-height: auto;
  }

  .quick-links {
    margin-top: 0;
  }

  .quick-grid,
  .feature-row,
  .about-grid,
  .product-grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy,
  .copy-block {
    max-width: none;
  }
}

@media (max-width: 540px) {
  .container {
    width: min(100% - 28px, 1140px);
  }

  h1 {
    max-width: 100%;
    font-size: 32px;
    line-height: 1.08;
    word-break: break-all;
  }

  h2 {
    font-size: 28px;
  }

  .hero-actions .btn,
  .cta-buttons a,
  .link-buttons a {
    width: 100%;
  }

  .feature-card,
  .about-grid article,
  .product-grid article,
  .faq-list details {
    padding: 22px;
  }
}