:root {
  --ink: #123a32;
  --ink-soft: #48665f;
  --paper: #f6fbf8;
  --white: #ffffff;
  --green-950: #043c31;
  --green-800: #06654f;
  --green-700: #087a62;
  --green-500: #12b886;
  --green-300: #6ee7b7;
  --green-100: #dff7ed;
  --line: rgba(11, 94, 73, 0.14);
  --shadow: 0 30px 80px rgba(3, 71, 55, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--ink);
  background:
    linear-gradient(180deg, #f9fcfa 0%, var(--paper) 68%, #eef8f3 100%);
  font-family: "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.page-glow {
  position: absolute;
  z-index: -1;
  border-radius: 999px;
  filter: blur(4px);
  pointer-events: none;
}

.page-glow--top {
  top: -320px;
  left: 25%;
  width: 720px;
  height: 620px;
  background: radial-gradient(circle, rgba(110, 231, 183, 0.32), transparent 68%);
}

.page-glow--side {
  top: 420px;
  right: -280px;
  width: 620px;
  height: 620px;
  background: radial-gradient(circle, rgba(24, 185, 138, 0.13), transparent 70%);
}

.site-header,
main,
footer {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 96px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 20px;
  font-weight: 760;
  letter-spacing: -0.02em;
}

.brand img {
  display: block;
  border-radius: 12px;
  filter: drop-shadow(0 8px 14px rgba(5, 101, 79, 0.17));
}

.header-meta {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.64);
  font-size: 13px;
  font-weight: 650;
  backdrop-filter: blur(12px);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #1cc58d;
  box-shadow: 0 0 0 5px rgba(28, 197, 141, 0.12);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(390px, 0.72fr);
  align-items: center;
  gap: clamp(64px, 9vw, 136px);
  min-height: 670px;
  padding: 76px 0 110px;
}

.eyebrow {
  margin: 0 0 24px;
  color: var(--green-700);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.eyebrow span {
  display: inline-block;
  padding: 7px 10px;
  border-radius: 8px;
  background: var(--green-100);
}

.hero h1 {
  margin: 0;
  color: var(--green-950);
  font-size: clamp(52px, 6.1vw, 82px);
  font-weight: 780;
  line-height: 1.09;
  letter-spacing: -0.065em;
}

.hero h1 em {
  color: var(--green-700);
  font-style: normal;
}

.hero-lede {
  max-width: 580px;
  margin: 31px 0 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.9;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 25px;
  margin-top: 35px;
  color: #315b51;
  font-size: 14px;
  font-weight: 650;
}

.hero-points span::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin: 0 9px 2px 0;
  border-radius: 50%;
  background: var(--green-500);
}

.download-card {
  position: relative;
  padding: 31px;
  overflow: hidden;
  border: 1px solid rgba(7, 100, 78, 0.16);
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.87);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.download-card::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -90px;
  width: 230px;
  height: 230px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(95, 231, 179, 0.22), transparent 68%);
}

.download-card__top {
  position: relative;
  display: flex;
  align-items: center;
  gap: 19px;
}

.app-mark {
  width: 84px;
  height: 84px;
  flex: 0 0 auto;
  border-radius: 23px;
  box-shadow: 0 15px 28px rgba(4, 101, 78, 0.18);
}

.app-mark img {
  display: block;
  width: 100%;
  height: 100%;
}

.download-card__label {
  margin: 0 0 4px;
  color: var(--green-700);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.download-card h2 {
  margin: 0;
  color: var(--green-950);
  font-size: 26px;
  letter-spacing: -0.035em;
}

.download-card__top p:last-child {
  margin: 7px 0 0;
  color: #6b817b;
  font-size: 13px;
}

.download-button {
  position: relative;
  display: grid;
  grid-template-columns: 46px 1fr auto;
  align-items: center;
  gap: 13px;
  margin-top: 29px;
  padding: 15px 18px;
  color: #fff;
  border-radius: 17px;
  background: linear-gradient(135deg, #087a62, #059669);
  box-shadow: 0 14px 28px rgba(6, 122, 96, 0.24);
  transition: transform 180ms ease, box-shadow 180ms ease, filter 180ms ease;
}

.download-button:hover {
  transform: translateY(-2px);
  filter: saturate(1.08);
  box-shadow: 0 18px 32px rgba(6, 122, 96, 0.3);
}

.download-button:focus-visible,
.checksum button:focus-visible {
  outline: 3px solid rgba(18, 184, 134, 0.35);
  outline-offset: 3px;
}

.download-button__icon {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 24px;
  font-weight: 500;
}

.download-button strong,
.download-button small {
  display: block;
}

.download-button strong {
  font-size: 16px;
  letter-spacing: 0.01em;
}

.download-button small {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 11px;
}

.download-button__arrow {
  color: rgba(255, 255, 255, 0.82);
  font-size: 20px;
}

.release-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.release-details div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.release-details span,
.checksum span {
  color: #789088;
  font-size: 12px;
}

.release-details strong {
  color: #315b51;
  font-size: 12px;
}

.checksum {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 12px;
  margin-top: 17px;
  padding: 13px 14px;
  border: 1px solid rgba(7, 100, 78, 0.1);
  border-radius: 13px;
  background: #f4faf7;
}

.checksum span,
.checksum code {
  display: block;
}

.checksum code {
  margin-top: 5px;
  overflow: hidden;
  color: #496861;
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.checksum button {
  padding: 6px 9px;
  color: var(--green-700);
  border: 0;
  border-radius: 8px;
  background: #e4f5ee;
  font: inherit;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
}

.checksum button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.download-note {
  margin: 14px 2px 0;
  color: #82968f;
  font-size: 11px;
  line-height: 1.65;
}

.trust-strip {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 17px;
  padding: 24px 29px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(232, 248, 241, 0.72);
}

.trust-icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #fff;
  border-radius: 13px;
  background: var(--green-700);
  font-size: 20px;
  font-weight: 800;
}

.trust-strip strong,
.trust-strip span {
  display: block;
}

.trust-strip strong {
  margin-bottom: 5px;
  color: var(--green-950);
  font-size: 15px;
}

.trust-strip span {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.65;
}

.features {
  padding: 150px 0 130px;
}

.section-heading {
  max-width: 670px;
}

.section-heading h2,
.install h2 {
  margin: 0;
  color: var(--green-950);
  font-size: clamp(36px, 4.2vw, 54px);
  line-height: 1.24;
  letter-spacing: -0.05em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 55px;
}

.feature-grid article {
  min-height: 264px;
  padding: 29px;
  border: 1px solid var(--line);
  border-radius: 23px;
  background: rgba(255, 255, 255, 0.68);
}

.feature-number {
  color: var(--green-500);
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 12px;
  font-weight: 800;
}

.feature-grid h3 {
  margin: 58px 0 13px;
  color: var(--green-950);
  font-size: 20px;
}

.feature-grid p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.85;
}

.install {
  display: grid;
  grid-template-columns: 0.82fr 1fr;
  gap: clamp(60px, 10vw, 140px);
  align-items: center;
  padding: 92px;
  border-radius: 34px;
  background: var(--green-950);
}

.install .eyebrow {
  color: var(--green-300);
}

.install h2 {
  color: #fff;
}

.install-copy > p:last-child {
  max-width: 400px;
  margin: 25px 0 0;
  color: rgba(229, 247, 240, 0.7);
  font-size: 14px;
  line-height: 1.8;
}

.install-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.install-steps li {
  display: grid;
  grid-template-columns: 48px 1fr;
  align-items: center;
  gap: 17px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.install-steps li:last-child {
  border-bottom: 0;
}

.install-steps li > span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--green-300);
  border: 1px solid rgba(110, 231, 183, 0.24);
  border-radius: 13px;
  background: rgba(110, 231, 183, 0.08);
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 13px;
  font-weight: 800;
}

.install-steps strong,
.install-steps small {
  display: block;
}

.install-steps strong {
  color: #fff;
  font-size: 15px;
}

.install-steps small {
  margin-top: 6px;
  color: rgba(229, 247, 240, 0.6);
  font-size: 12px;
}

footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 38px;
  padding: 55px 0 48px;
  color: #718780;
  font-size: 12px;
}

.brand--footer {
  color: var(--green-950);
  font-size: 16px;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 62px;
    padding-top: 65px;
  }

  .hero-copy {
    max-width: 700px;
  }

  .download-card {
    width: min(100%, 560px);
  }

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

  .feature-grid article {
    min-height: 0;
  }

  .feature-grid h3 {
    margin-top: 30px;
  }

  .install {
    grid-template-columns: 1fr;
    padding: 68px 54px;
  }
}

@media (max-width: 620px) {
  .site-header,
  main,
  footer {
    width: min(100% - 30px, 1180px);
  }

  .site-header {
    min-height: 78px;
  }

  .header-meta {
    padding: 8px 10px;
    font-size: 11px;
  }

  .brand {
    font-size: 17px;
  }

  .brand img {
    width: 36px;
    height: 36px;
  }

  .hero {
    min-height: 0;
    padding: 54px 0 82px;
  }

  .hero h1 {
    font-size: clamp(45px, 15vw, 64px);
  }

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

  .download-card {
    padding: 22px;
    border-radius: 24px;
  }

  .app-mark,
  .app-mark img {
    width: 69px;
    height: 69px;
  }

  .download-card h2 {
    font-size: 22px;
  }

  .release-details {
    grid-template-columns: 1fr;
  }

  .trust-strip {
    align-items: start;
    padding: 20px;
  }

  .features {
    padding: 105px 0 92px;
  }

  .install {
    padding: 48px 24px;
    border-radius: 27px;
  }

  footer {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 43px 4px;
  }

  footer p {
    margin: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .download-button {
    transition: none;
  }
}