:root {
  color-scheme: light;
  --ink: #182126;
  --muted: #5e6b72;
  --soft: #eef5ef;
  --line: #d9e5dc;
  --leaf: #2f7d54;
  --sun: #f6b451;
  --mist: #f8fbf8;
  --paper: #ffffff;
  --shadow: 0 18px 50px rgba(38, 68, 51, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--mist);
}

body {
  margin: 0;
  min-width: 320px;
}

body.nav-open {
  overflow: hidden;
}

a {
  color: inherit;
}

.site-header,
.site-footer,
.page,
.hero {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 700;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  box-shadow: 0 8px 20px rgba(47, 125, 84, 0.2);
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.nav a {
  text-decoration: none;
}

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

.nav-toggle,
.nav-close,
.nav-scrim,
.mobile-navigation {
  display: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  align-items: center;
  gap: 48px;
  min-height: 72vh;
  padding: 54px 0 76px;
}

.eyebrow {
  color: var(--leaf);
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 14px;
}

h1 {
  font-size: clamp(46px, 8vw, 92px);
  line-height: 0.98;
  margin: 0;
  letter-spacing: 0;
}

.lead {
  color: var(--muted);
  font-size: clamp(18px, 2.5vw, 23px);
  line-height: 1.65;
  margin: 26px 0 0;
  max-width: 640px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
}

.button.primary {
  color: #fff;
  background: var(--leaf);
  box-shadow: 0 14px 30px rgba(47, 125, 84, 0.22);
}

.button.secondary {
  color: var(--leaf);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.phone-panel {
  position: relative;
  border-radius: 30px;
  padding: 28px;
  background:
    radial-gradient(circle at 16% 12%, rgba(246, 180, 81, 0.32), transparent 28%),
    linear-gradient(145deg, #ffffff, #eaf4ed);
  box-shadow: var(--shadow);
}

.app-card {
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.78);
  padding: 22px;
  backdrop-filter: blur(14px);
}

.app-card img {
  width: 86px;
  height: 86px;
  border-radius: 22px;
  display: block;
  margin-bottom: 22px;
}

.score {
  font-size: 54px;
  font-weight: 800;
  line-height: 1;
}

.score span {
  font-size: 16px;
  color: var(--muted);
  font-weight: 700;
}

.metrics {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.metric {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.metric strong {
  color: var(--ink);
}

.section {
  padding: 58px 0;
  border-top: 1px solid var(--line);
}

.section h2,
.page h1 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.1;
  margin: 0 0 18px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.feature {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  min-height: 160px;
}

.feature h3 {
  margin: 0 0 10px;
  font-size: 19px;
}

.feature p,
.page p,
.page li {
  color: var(--muted);
  line-height: 1.8;
}

.page {
  padding: 52px 0 76px;
}

.page article {
  max-width: 820px;
}

.page h2 {
  margin-top: 38px;
  font-size: 25px;
}

.page ul {
  padding-left: 22px;
}

.notice {
  border-left: 4px solid var(--sun);
  background: #fff8ec;
  padding: 16px 18px;
  margin: 24px 0;
  color: #6b4b13;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  padding: 30px 0 42px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-links a,
.icp a {
  text-decoration: none;
}

@media (max-width: 780px) {
  .site-header {
    position: sticky;
    z-index: 20;
    top: 0;
    width: 100%;
    min-height: 72px;
    padding: max(14px, env(safe-area-inset-top)) 20px 14px;
    background: rgba(248, 251, 248, 0.94);
    border-bottom: 1px solid rgba(217, 229, 220, 0.86);
    backdrop-filter: blur(18px);
  }

  .nav {
    display: none;
  }

  .nav-toggle,
  .nav-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 58px;
    min-height: 44px;
    padding: 0 14px;
    border: 1px solid var(--line);
    border-radius: 22px;
    color: var(--ink);
    background: var(--paper);
    font: inherit;
    font-size: 15px;
    font-weight: 700;
  }

  .nav-toggle:focus-visible,
  .nav-close:focus-visible,
  .mobile-navigation-links a:focus-visible {
    outline: 3px solid rgba(47, 125, 84, 0.3);
    outline-offset: 2px;
  }

  .nav-scrim {
    display: block;
    position: fixed;
    z-index: 30;
    inset: 0;
    width: 100%;
    height: 100%;
    padding: 0;
    border: 0;
    opacity: 0;
    visibility: hidden;
    background: rgba(24, 33, 38, 0.38);
    transition: opacity 220ms ease, visibility 220ms ease;
  }

  .mobile-navigation {
    display: flex;
    position: fixed;
    z-index: 40;
    inset: 0 auto 0 0;
    width: min(86vw, 360px);
    flex-direction: column;
    overflow-y: auto;
    padding: max(18px, env(safe-area-inset-top)) 0 max(28px, env(safe-area-inset-bottom));
    background: var(--paper);
    box-shadow: 18px 0 50px rgba(24, 33, 38, 0.16);
    transform: translateX(-104%);
    visibility: hidden;
    transition: transform 260ms cubic-bezier(0.22, 1, 0.36, 1), visibility 0s linear 260ms;
  }

  .nav-open .nav-scrim {
    opacity: 1;
    visibility: visible;
  }

  .nav-open .mobile-navigation {
    transform: translateX(0);
    visibility: visible;
    transition-delay: 0s;
  }

  .mobile-navigation-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 0 20px 20px;
    border-bottom: 1px solid var(--line);
  }

  .mobile-navigation-header .brand img {
    width: 44px;
    height: 44px;
    border-radius: 12px;
  }

  .mobile-navigation-links {
    display: grid;
    gap: 6px;
    padding: 24px 14px;
  }

  .mobile-navigation-links p {
    margin: 0 10px 10px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
  }

  .mobile-navigation-links a {
    display: grid;
    gap: 4px;
    min-height: 68px;
    padding: 13px 14px;
    border: 1px solid transparent;
    border-radius: 14px;
    text-decoration: none;
  }

  .mobile-navigation-links a span {
    font-size: 17px;
    font-weight: 700;
  }

  .mobile-navigation-links a small {
    color: var(--muted);
    font-size: 13px;
  }

  .mobile-navigation-links a[aria-current="page"] {
    color: var(--leaf);
    border-color: var(--line);
    background: var(--soft);
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 32px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .nav-scrim,
  .mobile-navigation {
    transition: none;
  }
}