@charset "UTF-8";

:root {
  --bg: #fbfcf8;
  --surface: #ffffff;
  --surface-soft: #f6faf6;
  --surface-tint: #eaf5ed;
  --text: #17241b;
  --muted: #6b776f;
  --line: #d9e1db;
  --brand: #22a74f;
  --brand-dark: #167e3c;
  --accent: #c7ed40;
  --navy: #1e2a3c;
  --shadow: 0 16px 34px rgba(16, 28, 22, 0.08);
  --radius: 24px;
  --wrap: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Source Han Sans CN", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
}

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

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

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

button {
  font: inherit;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.wrap {
  width: min(var(--wrap), calc(100% - 32px));
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  font-family: Arial, sans-serif;
}

.section-tint {
  background: var(--surface-tint);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 22px 0 10px;
  background: linear-gradient(to bottom, rgba(251, 252, 248, 0.96), rgba(251, 252, 248, 0.84));
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 24px;
  border: 2px solid #183122;
  border-radius: 44px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 240px;
}

.brand img {
  width: 48px;
  height: 48px;
  object-fit: cover;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-copy strong {
  font-size: 23px;
  line-height: 1;
  font-weight: 900;
}

.brand-copy small {
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted);
  font-weight: 800;
}

.site-nav {
  margin-left: auto;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 34px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.header-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 56px;
  padding: 0 28px;
  border-radius: 28px;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #fffdf8;
  font-size: 17px;
  font-weight: 900;
  white-space: nowrap;
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  border: 2px solid #173123;
  padding: 10px;
}

.menu-toggle span {
  display: block;
  height: 3px;
  margin: 5px 0;
  border-radius: 2px;
  background: #173123;
}

.hero {
  padding: 48px 0 96px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 44px;
  align-items: center;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(58px, 7vw, 86px);
  line-height: 0.96;
  font-weight: 900;
}

.hero-copy h2 {
  margin: 10px 0 28px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.05;
  color: var(--brand);
  font-weight: 900;
}

.hero-text {
  max-width: 620px;
  margin: 0 0 34px;
  color: var(--muted);
  font-size: 22px;
  line-height: 1.65;
  font-weight: 700;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 72px;
  padding: 0 34px;
  border-radius: 8px;
  font-size: 24px;
  font-weight: 900;
  border: 3px solid #173123;
}

.btn-primary {
  background: var(--brand);
  color: #fffdf8;
}

.btn-secondary,
.btn-light {
  background: #fffdf8;
  color: var(--text);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  padding: 32px 0 0;
  margin: 44px 0 0;
  list-style: none;
  border-top: 2px solid var(--line);
}

.hero-meta li {
  font-size: 16px;
  font-weight: 900;
}

.hero-visual {
  display: flex;
  justify-content: flex-end;
}

.phone-card {
  position: relative;
  width: min(100%, 420px);
}

.phone-frame {
  position: relative;
  padding: 20px;
  border-radius: 28px;
  background: #163223;
  box-shadow: var(--shadow);
}

.phone-frame::after {
  content: "";
  position: absolute;
  right: -14px;
  bottom: -14px;
  width: 84%;
  height: 86%;
  border-radius: 28px;
  background: linear-gradient(180deg, #dcff5e, #a7e62d);
  z-index: -1;
}

.screen {
  overflow: hidden;
  border-radius: 20px;
  background: #fff;
}

.screen-cover {
  position: relative;
}

.screen-cover img {
  width: 100%;
  height: 512px;
  object-fit: cover;
}

.screen-panel {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  padding: 18px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 20px rgba(23, 49, 35, 0.12);
}

.screen-panel h3 {
  margin: 0 0 12px;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--brand);
  color: #fffdf8;
  font-size: 22px;
  font-weight: 900;
}

.screen-panel ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.screen-panel li {
  padding: 12px 16px;
  border: 2px solid #dce4de;
  border-radius: 12px;
  font-size: 18px;
  font-weight: 800;
}

.screen-panel li + li {
  margin-top: 10px;
}

.float-card {
  position: absolute;
  left: -52px;
  top: 198px;
  width: 250px;
  padding: 20px 24px;
  border: 3px solid #173123;
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow);
}

.float-card p,
.float-card span {
  margin: 0;
}

.float-card p {
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.float-card strong {
  display: block;
  margin: 14px 0 10px;
  font-size: 22px;
  line-height: 1.3;
}

.float-card span {
  color: var(--muted);
  font-size: 18px;
  font-weight: 800;
}

.section-head {
  padding-top: 86px;
  margin-bottom: 44px;
}

.section-head h2,
.versions-copy h2,
.flow-copy h2,
.faq-copy h2 {
  margin: 0;
  font-size: clamp(40px, 5vw, 58px);
  line-height: 1.05;
  font-weight: 900;
}

.split-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
  gap: 36px;
  align-items: end;
}

.split-head p:last-child,
.versions-copy p,
.flow-copy p,
.faq-copy p,
.support-copy p:not(.eyebrow) {
  margin: 0;
  color: #738078;
  font-size: 18px;
  line-height: 1.75;
  font-weight: 700;
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  padding-bottom: 72px;
}

.screen-card {
  overflow: visible;
  border-radius: 10px;
  background: transparent;
  box-shadow: none;
  width: 250px;
  height: 450px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.screen-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.versions {
  padding: 86px 0 92px;
}

.versions-grid,
.flow-grid,
.faq-grid,
.support-grid {
  display: grid;
  grid-template-columns: 0.38fr 0.62fr;
  gap: 56px;
}

.version-tabs {
  display: flex;
  gap: 10px;
  margin-top: 36px;
}

.version-tabs span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 66px;
  height: 32px;
  padding: 0 14px;
  border: 2px solid #d5ddd8;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 900;
  color: #748178;
}

.version-tabs .is-active {
  background: var(--accent);
  color: #173123;
  border-color: #173123;
}

.version-list {
  border-top: 3px solid #17241b;
}

.version-list article {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 24px;
  align-items: center;
  padding: 30px 0;
  border-bottom: 2px solid #e0e6e1;
}

.version-list small {
  display: block;
  margin-bottom: 8px;
  color: var(--brand);
  font-size: 14px;
  font-weight: 900;
  font-family: Arial, sans-serif;
}

.version-list h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 900;
}

.version-list time {
  color: #f27676;
  font-size: 14px;
  font-weight: 900;
  font-family: Arial, sans-serif;
}

.version-list a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 92px;
  height: 36px;
  border: 2px solid #203044;
  color: #203044;
  font-size: 14px;
  font-weight: 900;
  border-radius: 4px;
}

.support-check {
  padding: 94px 0;
}

.device-panel {
  overflow: hidden;
  border-radius: 8px;
  background: linear-gradient(180deg, #1f2a3b 0%, #26354b 100%);
  color: #fff;
  box-shadow: var(--shadow);
}

.device-head,
.device-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 28px;
}

.device-head {
  background: #15202f;
}

.device-head span,
.device-row span {
  font-size: 17px;
  font-weight: 800;
}

.device-head strong,
.device-row strong {
  min-width: 180px;
  padding: 8px 12px;
  border: 1px solid #4d617c;
  background: #243247;
  text-align: center;
  font-size: 15px;
  font-weight: 800;
}

.device-foot {
  padding: 10px 28px;
  background: #f8c935;
  color: #17241b;
  text-align: center;
  font-size: 13px;
  font-weight: 900;
}

.support-copy h2 {
  margin: 0 0 22px;
  font-size: clamp(40px, 5vw, 58px);
  line-height: 1.05;
  font-weight: 900;
}

.support-note {
  width: min(100%, 236px);
  margin-top: 34px;
  padding: 22px 24px;
  background: #1e2a3c;
  color: #fff;
  box-shadow: var(--shadow);
}

.support-note h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 900;
}

.support-note p {
  color: #d8e2da;
  font-size: 14px;
}

.flow {
  padding: 86px 0;
}

.flow-list {
  border-top: 3px solid var(--accent);
}

.flow-list article {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 26px 0;
  border-bottom: 2px solid #e0e6e1;
}

.flow-list span {
  width: 24px;
  height: 24px;
  border: 2px solid #d8ddd9;
  background: #fff;
}

.flow-list h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 900;
}

.flow-list em {
  color: #f27676;
  font-style: normal;
  font-size: 12px;
  font-weight: 900;
  font-family: Arial, sans-serif;
}

.support-notes {
  padding: 0 0 86px;
}

.support-head {
  padding-top: 88px;
}

.note-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 2px solid #dde2de;
  border-bottom: 0;
  background: #fff;
  box-shadow: var(--shadow);
}

.note-grid article {
  min-height: 136px;
  padding: 28px 30px;
  border-right: 2px solid #dde2de;
  border-bottom: 2px solid #dde2de;
}

.note-grid article:last-child {
  border-right: 0;
}

.note-grid small {
  display: block;
  margin-bottom: 18px;
  color: #f27676;
  font-size: 12px;
  font-weight: 900;
  font-family: Arial, sans-serif;
}

.note-grid h3 {
  margin: 0 0 14px;
  font-size: 20px;
  font-weight: 900;
}

.note-grid p {
  margin: 0;
  color: #707c74;
  font-size: 15px;
  line-height: 1.7;
  font-weight: 700;
}

.faq {
  padding: 86px 0 68px;
}

.faq-list {
  border-top: 3px solid #17241b;
}

.faq-list details {
  border-bottom: 2px solid #e0e6e1;
}

.faq-list summary {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  align-items: center;
  padding: 26px 0;
  list-style: none;
  cursor: pointer;
}

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

.faq-list summary span {
  color: var(--brand);
  font-size: 12px;
  font-weight: 900;
  font-family: Arial, sans-serif;
}

.faq-list summary strong {
  font-size: 18px;
  font-weight: 900;
}

.faq-list p {
  margin: 0 0 24px 48px;
  color: #707c74;
  font-size: 16px;
  line-height: 1.8;
  font-weight: 700;
}

.reviews {
  padding: 0 0 88px;
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding-bottom: 12px;
}

.review-grid article {
  min-height: 196px;
  padding: 22px;
  border: 3px solid #30563f;
  background: #fff;
  box-shadow: var(--shadow);
}

.review-grid b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 16px;
  border-radius: 4px;
  background: #eaf5ed;
  color: var(--brand);
  font-size: 14px;
  font-weight: 900;
  font-family: Arial, sans-serif;
}

.review-grid p {
  margin: 0 0 18px;
  color: #516056;
  font-size: 15px;
  line-height: 1.85;
  font-weight: 700;
}

.review-grid span {
  color: #173123;
  font-size: 14px;
  font-weight: 900;
}

.cta {
  background: var(--brand);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 54px 0;
}

.cta h2 {
  margin: 0 0 10px;
  color: #fffdf8;
  font-size: 52px;
  font-weight: 900;
}

.cta p {
  margin: 0;
  color: #dff3e4;
  font-size: 18px;
  font-weight: 700;
}

.site-footer {
  padding: 28px 0 42px;
  background: #f8faf7;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-end;
  color: #718077;
}

.footer-inner strong {
  display: block;
  margin-bottom: 8px;
  color: #17241b;
  font-size: 14px;
  font-weight: 900;
}

.footer-inner p {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
}

.icon {
  display: inline-block;
  width: 24px;
  height: 24px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

.icon-android {
  background-image: url("../icons/android.svg");
}

.icon-apple {
  background-image: url("../icons/apple.svg");
}

@media (max-width: 1080px) {
  .hero-grid,
  .versions-grid,
  .flow-grid,
  .faq-grid,
  .support-grid,
  .split-head {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    justify-content: center;
  }

  .float-card {
    left: 16px;
    top: auto;
    right: 16px;
    bottom: -26px;
    width: auto;
  }

  .screen-grid,
  .review-grid,
  .note-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .note-grid article:nth-child(2) {
    border-right: 0;
  }

  .note-grid article:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 860px) {
  .header-inner {
    flex-wrap: wrap;
    border-radius: 28px;
  }

  .menu-toggle {
    display: inline-block;
    margin-left: auto;
  }

  .site-nav {
    width: 100%;
    display: none;
    margin: 0;
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 14px 0 4px;
  }

  .header-download {
    display: none;
  }

  .hero {
    padding-top: 28px;
  }

  .btn {
    width: 100%;
    font-size: 22px;
  }

  .hero-actions,
  .cta-actions {
    flex-direction: column;
  }

  .cta-inner,
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .device-head,
  .device-row,
  .version-list article {
    grid-template-columns: 1fr;
    display: grid;
  }
}

@media (max-width: 640px) {
  .wrap {
    width: min(var(--wrap), calc(100% - 24px));
  }

  .brand {
    min-width: 0;
  }

  .brand-copy strong {
    font-size: 20px;
  }

  .hero-text {
    font-size: 18px;
  }

  .review-grid,
  .note-grid {
    grid-template-columns: 1fr;
  }

  .screen-grid {
    display: flex;
    gap: 16px;
    padding-bottom: 24px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
  }

  .screen-grid::-webkit-scrollbar {
    height: 6px;
  }

  .screen-grid::-webkit-scrollbar-thumb {
    background: rgba(23, 49, 35, 0.24);
    border-radius: 999px;
  }

  .note-grid article,
  .note-grid article:nth-child(2) {
    border-right: 0;
  }

  .screen-card {
    flex: 0 0 250px;
    width: 250px;
    height: 450px;
    margin: 0;
    scroll-snap-align: start;
  }

  .phone-frame::after {
    right: -8px;
    bottom: -8px;
  }

  .float-card {
    position: static;
    margin-top: 16px;
  }

  .hero-meta {
    gap: 12px 18px;
  }

  .support-note {
    width: 100%;
  }
}