:root {
  --theme: #00c78d;
  --theme-light: #5ddcb3;
  --theme-deep: #00a074;
  --theme-soft: #e8f8f2;
  --theme-mint: #f2fbf7;
  --text-primary: #143028;
  --text-secondary: #4a635a;
  --text-muted: #7a9088;
  --surface: #ffffff;
  --line: rgba(0, 199, 141, 0.16);
  --shadow: 0 0.1rem 0.32rem rgba(0, 140, 100, 0.08);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-display: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --radius: 0.18rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

ul {
  list-style: none;
}

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

html {
  height: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  position: relative;
  min-height: 100%;
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0.01em;
  color: var(--text-primary);
  overflow-x: hidden;
  background:
    radial-gradient(ellipse 70% 45% at 90% 10%, rgba(0, 199, 141, 0.1), transparent 55%),
    radial-gradient(ellipse 50% 40% at 5% 60%, rgba(93, 220, 179, 0.08), transparent 50%),
    linear-gradient(180deg, #f2fbf7 0%, #eaf7f1 35%, #f7faf9 100%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

.page-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(circle at 70% 30%, rgba(0, 199, 141, 0.05), transparent 40%),
    radial-gradient(circle at 20% 85%, rgba(0, 160, 116, 0.04), transparent 35%);
}

.header,
.layout,
.copyright {
  position: relative;
  z-index: 1;
}

/* —— Simple top row: brand + green pill —— */
.header {
  position: relative;
  z-index: 20;
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid rgba(0, 199, 141, 0.1);
  animation: fade-down 0.45s ease-out both;
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.18rem 0.28rem;
}

.company {
  display: flex;
  align-items: center;
}

.company__name {
  font-size: 0.22rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--theme-deep);
}

.nav {
  display: flex;
  align-items: center;
}

.nav-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.08rem 0.28rem;
  font-size: 0.18rem;
  font-weight: 600;
  color: #fff;
  background: var(--theme);
  border-radius: 999px;
  box-shadow: 0 0.06rem 0.18rem rgba(0, 160, 116, 0.28);
  transition: background 0.25s ease, transform 0.25s ease;
}

.nav-download:hover {
  background: var(--theme-deep);
  transform: translateY(-0.02rem);
}

/* —— Soft hero: huge type + phone right, no solid banner block —— */
.banner {
  position: relative;
  overflow: hidden;
  animation: fade-in 0.55s ease-out both;
}

.banner__shape {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
}

.banner__shape--a {
  width: 4.5rem;
  height: 4.5rem;
  top: -1.2rem;
  right: -1rem;
  background: radial-gradient(circle, rgba(0, 199, 141, 0.14), transparent 68%);
  animation: float-soft 10s ease-in-out infinite;
}

.banner__shape--b {
  width: 2.8rem;
  height: 2.8rem;
  bottom: 0.4rem;
  left: -0.6rem;
  background: radial-gradient(circle, rgba(93, 220, 179, 0.18), transparent 70%);
  animation: float-soft 12s ease-in-out infinite reverse;
}

.appContent {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.64rem 0.28rem 0.48rem;
}

.banner-desc {
  flex: 1;
  min-width: 0;
  max-width: 5.6rem;
  animation: slide-right 0.6s ease-out 0.08s both;
}

.banner-tag {
  margin-bottom: 0.16rem;
  font-size: 0.16rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--theme);
}

.appName {
  margin-bottom: 0.2rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.04em;
  color: var(--text-primary);
}

.appDesc {
  font-size: 0.24rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

.appDesc + .appDesc {
  margin-bottom: 0.32rem;
}

.download-link {
  display: inline-block;
}

.download {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.2rem;
  padding: 0.14rem 0.4rem;
  font-size: 0.22rem;
  font-weight: 600;
  color: #fff;
  background: var(--theme);
  border-radius: 999px;
  box-shadow: 0 0.1rem 0.28rem rgba(0, 160, 116, 0.28);
  overflow: hidden;
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  animation: download-pulse 2.4s ease-in-out infinite;
}

.download::after {
  content: "";
  position: absolute;
  top: 0;
  left: -120%;
  width: 55%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  transform: skewX(-20deg);
  pointer-events: none;
}

.download-link:hover .download {
  background: var(--theme-deep);
  transform: translateY(-0.04rem) scale(1.03);
  box-shadow: 0 0.14rem 0.36rem rgba(0, 160, 116, 0.38);
  animation: none;
}

.download-link:hover .download::after {
  animation: download-shine 0.75s ease;
}

.phonePic-wrap {
  position: relative;
  flex: 0 0 3.6rem;
  max-width: 42%;
  animation: slide-up 0.65s ease-out 0.15s both;
}

.phonePic-accent {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 90%;
  height: 80%;
  transform: translate(-50%, -50%);
  border-radius: 40% 60% 55% 45%;
  background: linear-gradient(145deg, rgba(0, 199, 141, 0.16), rgba(93, 220, 179, 0.08));
  pointer-events: none;
}

.phonePic {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  border-radius: 0.16rem;
  filter: drop-shadow(0 0.16rem 0.32rem rgba(0, 120, 90, 0.18));
}

/* —— Vertical feature bands —— */
.appInfo {
  max-width: 900px;
  margin: 0 auto;
  padding: 0.4rem 0.28rem 0.8rem;
}

.section-head {
  margin-bottom: 0.32rem;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 0.12rem;
  font-size: 0.34rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-primary);
}

.section-title::before {
  content: "";
  display: block;
  width: 0.08rem;
  height: 0.32rem;
  border-radius: 999px;
  background: var(--theme);
  flex-shrink: 0;
}

.feature-band {
  display: flex;
  flex-direction: column;
  gap: 0.18rem;
}

.item {
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.24rem;
  padding: 0.24rem 0.28rem;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(0.2rem);
  transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.25s ease;
}

.item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.item:nth-child(1).is-visible {
  transition-delay: 0.04s;
}

.item:nth-child(2).is-visible {
  transition-delay: 0.1s;
}

.item:nth-child(3).is-visible {
  transition-delay: 0.16s;
}

.item:nth-child(4).is-visible {
  transition-delay: 0.22s;
}

.item:hover {
  box-shadow: 0 0.14rem 0.4rem rgba(0, 140, 100, 0.12);
}

.feature-watermark {
  position: absolute;
  right: 0.2rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(0, 199, 141, 0.1);
  pointer-events: none;
  user-select: none;
}

.item__media {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 1.4rem;
  border-radius: 0.14rem;
  overflow: hidden;
}

.item__media img {
  width: 100%;
  height: auto;
  border-radius: 0.14rem;
}

.function-desc {
  position: relative;
  z-index: 1;
  flex: 1;
  min-width: 0;
}

.function-desc h2 {
  margin-bottom: 0.06rem;
  font-size: 0.26rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

.function-desc p {
  font-size: 0.18rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* —— Contact panel —— */
.contact {
  margin-top: 0.4rem;
  opacity: 0;
  transform: translateY(0.16rem);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.contact.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.contact-panel {
  padding: 0.28rem 0.32rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.contact-title {
  margin-bottom: 0.14rem;
  font-size: 0.24rem;
  font-weight: 700;
  color: var(--theme-deep);
}

.contact-row {
  display: flex;
  gap: 0.16rem;
  margin-bottom: 0.1rem;
  font-size: 0.18rem;
  line-height: 1.5;
}

.contact-row:last-child {
  margin-bottom: 0;
}

.contact-row span {
  flex-shrink: 0;
  min-width: 0.6rem;
  color: var(--text-muted);
}

.contact-row em {
  font-style: normal;
  color: var(--text-secondary);
  word-break: break-all;
}

/* —— Footer —— */
.copyright {
  padding: 0.28rem 0.24rem 0.36rem;
  background: #143028;
  color: rgba(255, 255, 255, 0.75);
}

.copyright-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.16rem 0.28rem;
  max-width: 1000px;
  margin: 0 auto;
  font-size: 0.16rem;
  text-align: center;
}

.beian-link {
  display: inline-flex;
  align-items: center;
  gap: 0.06rem;
  color: rgba(255, 255, 255, 0.88);
  transition: color 0.2s ease;
}

.beian-link:hover {
  color: #fff;
}

.copyright-img {
  width: 0.2rem;
  height: 0.2rem;
  border-radius: 0.04rem;
}

@keyframes download-pulse {
  0%,
  100% {
    transform: translateY(0) scale(1);
    box-shadow: 0 0.1rem 0.28rem rgba(0, 160, 116, 0.28);
  }
  50% {
    transform: translateY(-0.02rem) scale(1.02);
    box-shadow: 0 0.14rem 0.36rem rgba(0, 160, 116, 0.4);
  }
}

@keyframes download-shine {
  from {
    left: -120%;
  }
  to {
    left: 140%;
  }
}

@keyframes fade-down {
  from {
    opacity: 0;
    transform: translateY(-0.12rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slide-right {
  from {
    opacity: 0;
    transform: translateX(-0.24rem);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(0.24rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float-soft {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(0.12rem, -0.1rem);
  }
}

@media (max-width: 768px) {
  .header__inner {
    padding: 0.14rem 0.2rem;
  }

  .company__name {
    font-size: 0.18rem;
    max-width: 3.2rem;
    white-space: normal;
    line-height: 1.3;
  }

  .nav-download {
    padding: 0.07rem 0.22rem;
    font-size: 0.16rem;
  }

  .appContent {
    flex-direction: column;
    align-items: stretch;
    padding: 0.48rem 0.2rem 0.4rem;
    gap: 0.36rem;
  }

  .banner-desc {
    max-width: none;
    text-align: center;
  }

  .appName {
    font-size: 0.52rem;
  }

  .appDesc {
    font-size: 0.22rem;
  }

  .phonePic-wrap {
    flex: none;
    max-width: 3rem;
    width: 100%;
    margin: 0 auto;
  }

  .appInfo {
    padding: 0.32rem 0.2rem 0.64rem;
  }

  .section-title {
    font-size: 0.3rem;
  }

  .item {
    padding: 0.2rem 0.18rem;
    gap: 0.16rem;
  }

  .item__media {
    width: 1.1rem;
  }

  .feature-watermark {
    font-size: 0.9rem;
    right: 0.12rem;
  }

  .function-desc h2 {
    font-size: 0.22rem;
  }

  .function-desc p {
    font-size: 0.16rem;
  }

  .contact-panel {
    padding: 0.24rem 0.2rem;
  }

  .copyright-inner {
    flex-direction: column;
    gap: 0.08rem;
  }
}