:root {
  --ink: #17221d;
  --muted: #5f6f67;
  --paper: #f7f8f3;
  --card: rgba(255, 255, 255, 0.86);
  --line: rgba(23, 34, 29, 0.12);
  --green: #1f6b4d;
  --green-dark: #124b35;
  --lime: #dff59f;
  --orange: #ff9a57;
  --shadow: 0 24px 70px rgba(28, 59, 43, 0.12);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 3%, rgba(223, 245, 159, 0.55), transparent 28rem),
    radial-gradient(circle at 92% 20%, rgba(255, 154, 87, 0.16), transparent 24rem), var(--paper);
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei",
    sans-serif;
  line-height: 1.65;
}
a {
  color: inherit;
}
img {
  max-width: 100%;
}
.wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}
.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(23, 34, 29, 0.08);
  background: rgba(247, 248, 243, 0.82);
  backdrop-filter: blur(18px);
}
.nav-inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  font-weight: 760;
  letter-spacing: -0.02em;
}
.brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  box-shadow: 0 5px 16px rgba(18, 75, 53, 0.2);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 650;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--green);
}
.nav-cta {
  padding: 9px 15px;
  border-radius: 999px;
  color: #fff !important;
  background: var(--green);
}
.language-picker {
  position: relative;
}
.language-trigger {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 13px 0 8px;
  border: 1px solid rgba(31, 107, 77, 0.16);
  border-radius: 999px;
  color: var(--green-dark);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 6px 20px rgba(31, 74, 53, 0.06);
  font: inherit;
  font-size: 13px;
  font-weight: 760;
  cursor: pointer;
  transition:
    border-color 0.18s ease,
    background 0.18s ease,
    box-shadow 0.18s ease;
}
.language-trigger:hover,
.language-picker.is-open .language-trigger {
  border-color: rgba(31, 107, 77, 0.34);
  background: #fff;
  box-shadow: 0 9px 24px rgba(31, 74, 53, 0.11);
}
.language-trigger:focus-visible {
  outline: 3px solid rgba(31, 107, 77, 0.2);
  outline-offset: 2px;
}
.language-mark {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--green-dark);
  background: var(--lime);
  font-size: 12px;
  font-weight: 850;
}
.language-chevron {
  width: 7px;
  height: 7px;
  margin: -4px 1px 0 3px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.18s ease;
}
.language-picker.is-open .language-chevron {
  margin-top: 4px;
  transform: rotate(225deg);
}
.language-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 30;
  width: 188px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 22px 55px rgba(18, 75, 53, 0.18);
  backdrop-filter: blur(18px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-7px) scale(0.98);
  transform-origin: top right;
  transition:
    opacity 0.16s ease,
    transform 0.16s ease,
    visibility 0.16s ease;
}
.language-picker.is-open .language-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}
.language-option {
  width: 100%;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  border: 0;
  border-radius: 11px;
  color: var(--muted);
  background: transparent;
  font: inherit;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
}
.language-option:hover,
.language-option:focus-visible {
  color: var(--green-dark);
  background: #f1f7e9;
  outline: none;
}
.language-option.is-active {
  color: var(--green-dark);
  background: var(--lime);
  font-weight: 780;
}
.language-option.is-active::after {
  content: "✓";
  font-weight: 900;
}
.hero {
  padding: 96px 0 72px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  gap: 70px;
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(48px, 7vw, 82px);
  line-height: 1.02;
  letter-spacing: -0.065em;
}
.hero h1 span {
  color: var(--green);
}
.lead {
  margin: 25px 0 0;
  max-width: 650px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.download-card {
  width: min(100%, 640px);
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 32px;
  padding: 15px 16px;
  border: 1px solid rgba(31, 107, 77, 0.13);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 16px 42px rgba(31, 74, 53, 0.09);
  backdrop-filter: blur(14px);
}
.download-product {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 13px;
}
.download-icon {
  width: 54px;
  height: 54px;
  flex: 0 0 auto;
  border-radius: 15px;
  box-shadow: 0 7px 18px rgba(18, 75, 53, 0.18);
}
.download-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}
.download-copy strong {
  font-size: 16px;
  letter-spacing: -0.01em;
}
.download-copy span {
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}
.app-store-link {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  gap: 9px;
  padding: 0 18px;
  border-radius: 15px;
  color: #fff;
  background: #111;
  box-shadow: 0 10px 24px rgba(17, 17, 17, 0.17);
  font-size: 14px;
  font-weight: 720;
  text-decoration: none;
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease;
}
.app-store-link:hover {
  background: #252525;
  box-shadow: 0 13px 29px rgba(17, 17, 17, 0.23);
  transform: translateY(-2px);
}
.app-store-link:focus-visible {
  outline: 3px solid rgba(31, 107, 77, 0.22);
  outline-offset: 3px;
}
.secondary-actions {
  margin-top: 14px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 750;
}
.button.primary {
  color: #fff;
  background: var(--green);
  box-shadow: 0 12px 28px rgba(31, 107, 77, 0.22);
}
.button.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}
.apple-mark {
  font-family: -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 25px;
  font-weight: 500;
  line-height: 1;
}
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 30px;
  color: var(--muted);
  font-size: 14px;
}
.trust-row span::before {
  content: "✓";
  margin-right: 7px;
  color: var(--green);
  font-weight: 900;
}
.phone-stage {
  position: relative;
  min-height: 560px;
  display: grid;
  place-items: center;
}
.orb {
  position: absolute;
  width: 430px;
  aspect-ratio: 1;
  border-radius: 48% 52% 61% 39% / 40% 37% 63% 60%;
  background: linear-gradient(145deg, var(--lime), #bfe5c8);
  transform: rotate(-8deg);
}
.phone {
  position: relative;
  width: 285px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 46px;
  background: #15251e;
  box-shadow: 0 45px 90px rgba(19, 67, 47, 0.3);
  transform: rotate(4deg);
}
.screen {
  min-height: 535px;
  padding: 46px 18px 22px;
  overflow: hidden;
  border-radius: 36px;
  background: linear-gradient(#f9fbf7, #eef5ec);
}
.screen-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.screen-title {
  font-size: 25px;
  font-weight: 800;
  letter-spacing: -0.04em;
}
.screen-badge {
  padding: 5px 9px;
  border-radius: 999px;
  color: var(--green-dark);
  background: var(--lime);
  font-size: 11px;
  font-weight: 800;
}
.mini-card {
  margin-top: 18px;
  padding: 17px;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 10px 30px rgba(23, 34, 29, 0.08);
}
.mini-card strong {
  display: block;
  font-size: 15px;
}
.mini-card p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
}
.progress {
  height: 7px;
  margin-top: 14px;
  overflow: hidden;
  border-radius: 10px;
  background: #e9eee9;
}
.progress i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--orange);
}
.floating-note {
  position: absolute;
  right: -3px;
  bottom: 70px;
  width: 205px;
  padding: 17px;
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow);
  transform: rotate(-4deg);
  font-weight: 750;
}
.floating-note small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-weight: 500;
}
.section {
  padding: 80px 0;
}
.section-head {
  max-width: 720px;
  margin-bottom: 36px;
}
.section h2,
.content-hero h1 {
  margin: 0;
  font-size: clamp(34px, 4.5vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.045em;
}
.section-head p {
  margin: 15px 0 0;
  color: var(--muted);
  font-size: 18px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.feature-card,
.content-card,
.step {
  border: 1px solid var(--line);
  background: var(--card);
  box-shadow: 0 14px 45px rgba(31, 74, 53, 0.07);
}
.feature-card {
  min-height: 260px;
  padding: 28px;
  border-radius: 26px;
}
.feature-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  color: var(--green-dark);
  background: var(--lime);
  font-size: 23px;
}
.feature-card h3 {
  margin: 28px 0 8px;
  font-size: 22px;
  letter-spacing: -0.025em;
}
.feature-card p {
  margin: 0;
  color: var(--muted);
}
.feature-card.wide {
  grid-column: span 2;
  background: var(--green);
  color: white;
}
.feature-card.wide p {
  color: rgba(255, 255, 255, 0.78);
}
.privacy-strip {
  padding: 52px;
  border-radius: 34px;
  color: #fff;
  background: var(--green-dark);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 40px;
}
.privacy-strip h2 {
  font-size: clamp(30px, 4vw, 48px);
}
.privacy-strip p {
  max-width: 680px;
  color: rgba(255, 255, 255, 0.76);
}
.privacy-strip .button {
  color: var(--green-dark);
  background: var(--lime);
}
.content-hero {
  padding: 78px 0 38px;
}
.content-hero .lead {
  max-width: 760px;
}
.updated {
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}
.content-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 38px;
  padding: 30px 0 90px;
}
.toc {
  position: sticky;
  top: 100px;
  align-self: start;
  padding: 20px;
  border-left: 2px solid var(--line);
}
.toc strong {
  display: block;
  margin-bottom: 10px;
}
.toc a {
  display: block;
  padding: 6px 0;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}
.toc a:hover {
  color: var(--green);
}
.content-stack {
  display: grid;
  gap: 18px;
}
.content-card {
  padding: clamp(24px, 4vw, 42px);
  border-radius: 26px;
}
.content-card h2 {
  margin: 0 0 17px;
  font-size: 28px;
  letter-spacing: -0.03em;
}
.content-card h3 {
  margin: 26px 0 8px;
  font-size: 19px;
}
.content-card p {
  color: var(--muted);
}
.content-card ul,
.content-card ol {
  padding-left: 22px;
  color: var(--muted);
}
.content-card li + li {
  margin-top: 9px;
}
.notice {
  padding: 18px 20px;
  border-left: 4px solid var(--green);
  border-radius: 10px;
  background: #eef6e7;
  color: var(--green-dark);
}
.notice.warning {
  border-color: var(--orange);
  background: #fff0e6;
  color: #793c19;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
}
.data-table th,
.data-table td {
  padding: 15px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.data-table th {
  color: var(--green-dark);
  font-size: 14px;
}
.data-table td {
  color: var(--muted);
}
.steps {
  display: grid;
  gap: 14px;
}
.step {
  padding: 22px;
  border-radius: 20px;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 15px;
}
.step-num {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--lime);
  color: var(--green-dark);
  font-weight: 850;
}
.step h3 {
  margin: 1px 0 4px;
}
.step p {
  margin: 0;
}
.contact-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 24px;
  border-radius: 20px;
  background: var(--green-dark);
  color: #fff;
}
.contact-box p {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.74);
}
.contact-box .button {
  color: var(--green-dark);
  border-color: rgba(18, 75, 53, 0.18);
}
.contact-box .button:hover {
  color: #fff;
  background: var(--green) !important;
  border-color: rgba(255, 255, 255, 0.32);
}
footer {
  padding: 38px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.footer-links a {
  text-decoration: none;
}
@media (max-width: 860px) {
  .nav-links {
    gap: 10px;
  }
  .nav-links a:not(.nav-cta) {
    display: none;
  }
  .hero {
    padding-top: 66px;
  }
  .hero-grid,
  .content-layout {
    grid-template-columns: 1fr;
  }
  .hero-grid {
    gap: 32px;
  }
  .phone-stage {
    min-height: 510px;
  }
  .feature-grid {
    grid-template-columns: 1fr !important;
  }
  .feature-card.wide {
    grid-column: auto;
  }
  .privacy-strip {
    padding: 34px;
    grid-template-columns: 1fr;
  }
  .toc {
    display: none;
  }
}
@media (max-width: 560px) {
  .wrap {
    width: min(100% - 28px, 1120px);
  }
  .brand span {
    display: none;
  }
  .hero {
    padding: 48px 0 40px;
  }
  h1 {
    font-size: 48px;
  }
  .phone-stage {
    min-height: 440px;
    transform: scale(0.84);
    margin: -25px -30px;
  }
  .section {
    padding: 58px 0;
  }
  .content-hero {
    padding-top: 54px;
  }
  .content-card {
    padding: 24px 20px;
  }
  .download-card {
    align-items: stretch;
    flex-direction: column;
    padding: 16px;
  }
  .app-store-link {
    width: 100%;
  }
  .download-copy span {
    white-space: normal;
  }
  .data-table {
    display: block;
    overflow-x: auto;
  }
  .footer-inner {
    flex-direction: column;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}