:root {
  --green: #10b981;
  --green-dark: #0b3b2e;
  --green-deep: #082b22;
  --ink: #10251e;
  --muted: #667a72;
  --line: #dce8e2;
  --cream: #f7f8f4;
  --coral: #ff7a45;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}

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

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

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 max(24px, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid rgba(220, 232, 226, 0.85);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 850;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}

.site-nav nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #52665e;
  font-size: 14px;
  font-weight: 700;
}

.site-nav nav a:hover {
  color: var(--green);
}

.hero {
  min-height: 700px;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 64px;
  align-items: center;
  padding: 78px max(24px, calc((100vw - 1180px) / 2)) 86px;
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 10%, rgba(255, 122, 69, 0.13), transparent 28%),
    linear-gradient(120deg, #f9fcfa 0%, #f2fbf7 58%, #e8f8f1 100%);
}

.eyebrow,
.kicker {
  margin: 0;
  color: #0f9d6d;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 1.5px;
}

.hero h1 {
  max-width: 640px;
  margin: 24px 0 22px;
  color: var(--green-deep);
  font-size: clamp(44px, 5.4vw, 72px);
  line-height: 1.09;
  font-weight: 900;
}

.lead {
  max-width: 580px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.85;
}

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

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 850;
}

.button.primary {
  color: #fff;
  background: var(--green-dark);
  box-shadow: 0 16px 30px rgba(11, 59, 46, 0.18);
}

.button.secondary {
  border: 1px solid #d2e3da;
  background: rgba(255, 255, 255, 0.76);
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
  color: #62786f;
  font-size: 13px;
  font-weight: 700;
}

.hero-notes span {
  padding: 8px 11px;
  border: 1px solid #d8e9e1;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
}

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

.phone {
  position: absolute;
  width: 260px;
  height: 526px;
  overflow: hidden;
  border: 8px solid #102d25;
  border-radius: 38px;
  background: #fff;
  box-shadow: 0 32px 68px rgba(8, 50, 38, 0.24);
}

.phone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.phone-back {
  left: 20px;
  top: 74px;
  transform: rotate(-7deg) scale(0.92);
  opacity: 0.9;
}

.phone-front {
  right: 60px;
  top: 10px;
  transform: rotate(4deg);
}

.promise-strip {
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 30px;
  padding: 18px 24px;
  border-top: 1px solid #eaf0ed;
  border-bottom: 1px solid #eaf0ed;
  color: #61756d;
  font-size: 13px;
  font-weight: 850;
}

.section {
  padding: 108px max(24px, calc((100vw - 1180px) / 2));
}

.section-heading {
  max-width: 720px;
  margin-bottom: 44px;
}

.section-heading.centered {
  margin-inline: auto;
  text-align: center;
}

.section-heading h2,
.showcase-copy h2 {
  margin: 12px 0 14px;
  color: var(--green-deep);
  font-size: clamp(34px, 4vw, 54px);
  line-height: 1.18;
}

.section-heading p,
.showcase-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.85;
}

.features {
  color: #fff;
  background: #082b22;
}

.features .section-heading h2 {
  color: #75e6bd;
}

.features .section-heading p {
  color: #a9c4ba;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-grid article {
  min-height: 168px;
  padding: 26px;
  border: 1px solid rgba(117, 230, 189, 0.2);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.045);
}

.feature-grid strong {
  display: block;
  color: #78e8be;
  font-size: 20px;
}

.feature-grid p {
  margin: 12px 0 0;
  color: #a9c4ba;
  font-size: 14px;
  line-height: 1.75;
}

.showcase {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 56px;
  align-items: center;
  background: var(--cream);
}

.screens {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.screens figure {
  margin: 0;
  overflow: hidden;
  border: 8px solid #fff;
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 24px 55px rgba(16, 68, 51, 0.13);
}

.screens img {
  width: 100%;
  aspect-ratio: 1280 / 2781;
  object-fit: cover;
  object-position: top;
}

.screens figcaption {
  padding: 13px 8px 15px;
  color: #24463a;
  text-align: center;
  font-size: 13px;
  font-weight: 850;
}

.plans {
  max-width: 940px;
  display: grid;
  grid-template-columns: 1fr 1.12fr;
  gap: 20px;
  margin: 52px auto 0;
}

.plan {
  padding: 34px;
  border: 1px solid #dce6e1;
  border-radius: 28px;
  background: #fff;
}

.plan span {
  color: #0f9d6d;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 1.4px;
}

.plan h3 {
  margin: 18px 0 10px;
  color: var(--green-deep);
  font-size: 34px;
}

.plan p,
.plan li {
  color: var(--muted);
  line-height: 1.75;
}

.plan ul {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding-left: 20px;
}

.plan.pro {
  color: #fff;
  border-color: #0d4637;
  background: linear-gradient(145deg, #0d4838, #082c23);
}

.plan.pro span,
.plan.pro h3 {
  color: #72e5bd;
}

.plan.pro p,
.plan.pro li {
  color: #d7e8e1;
}

.faq {
  background: #fff;
}

.faq-list {
  max-width: 860px;
  border-top: 1px solid #cfddd6;
}

.faq-list details {
  border-bottom: 1px solid #cfddd6;
}

.faq-list summary {
  min-height: 72px;
  display: flex;
  align-items: center;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 850;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list p {
  margin: -8px 0 22px;
  color: var(--muted);
  line-height: 1.8;
}

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px max(24px, calc((100vw - 1180px) / 2));
  color: #d6e3de;
  background: #071f18;
}

footer div {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

footer a {
  color: #8bd6bb;
}

@media (max-width: 920px) {
  .site-nav {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 16px;
  }

  .site-nav nav {
    width: 100%;
    overflow-x: auto;
    gap: 18px;
    padding-bottom: 4px;
    white-space: nowrap;
  }

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

  .hero {
    min-height: auto;
    padding-top: 54px;
  }

  .hero-visual {
    min-height: 460px;
  }

  .phone {
    width: 218px;
    height: 442px;
  }

  .phone-front {
    right: max(12px, 12vw);
  }

  .feature-grid,
  .plans,
  .screens {
    grid-template-columns: 1fr;
  }

  .screens {
    max-width: 320px;
    margin: 0 auto;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .hero h1 {
    font-size: 40px;
  }

  .hero-visual {
    min-height: 390px;
  }

  .phone {
    width: 180px;
    height: 366px;
    border-width: 6px;
    border-radius: 30px;
  }

  .phone-back {
    left: 2px;
  }

  .phone-front {
    right: 8px;
  }

  .section {
    padding-block: 76px;
  }
}