:root {
  --ink: #20301f;
  --deep: #213a22;
  --accent: #659f2f;
  --download: #2f6f45;
  --download-hover: #245737;
  --download-ink: #ffffff;
  --hero: #eff7df;
  --lavender: #f1ebf5;
  --line: #ced8c8;
  --muted: #57534e;
  --surface: #fafaf9;
  --white: #fff;
  --page: 72rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  min-width: 0;
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
p,
figure,
blockquote {
  margin: 0;
}

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

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

.page-shell {
  width: min(100% - 2rem, var(--page));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 40;
  top: 0;
  border-bottom: 1px solid rgb(20 83 45 / 10%);
  background: rgb(250 250 249 / 95%);
  backdrop-filter: blur(0.75rem);
}

.header-shell {
  display: flex;
  align-items: center;
  width: min(100%, var(--page));
  min-height: 4rem;
  margin-inline: auto;
  padding-inline: 0.75rem;
  gap: 0.75rem;
}

.brand-link {
  min-width: 0;
  flex: 1;
}

.header-logo {
  width: auto;
  max-width: 100%;
  height: 2.25rem;
  object-fit: contain;
  object-position: left center;
}

.site-nav {
  display: none;
  margin-left: auto;
  gap: 1.75rem;
  color: #57534e;
  font-size: 0.875rem;
  font-weight: 700;
}

.site-nav a,
.footer-nav a {
  transition: color 160ms ease-out;
}

.site-nav a:hover {
  color: #4d7c0f;
}

.header-cta {
  display: inline-flex;
  min-height: 2.75rem;
  flex: none;
  align-items: center;
  margin-left: auto;
  padding-inline: 1rem;
  justify-content: center;
  border: 1px solid var(--download);
  border-radius: 6px;
  color: var(--download-ink);
  background: var(--download);
  font-size: 0.875rem;
  font-weight: 800;
  white-space: nowrap;
  transition: background 160ms ease-out, border-color 160ms ease-out;
}

.hero-section {
  position: relative;
  overflow: hidden;
  background: var(--hero);
}

.hero-section::before {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -24%;
  width: 44vw;
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgb(233 213 255 / 45%);
}

.hero-shell {
  position: relative;
  width: min(100% - 2rem, var(--page));
  margin-inline: auto;
  padding-block: 2rem 3rem;
}

.hero-kicker {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
  gap: 0.5rem;
  color: #57534e;
  font-size: 0.875rem;
  font-weight: 800;
}

.hero-kicker span {
  padding: 0.5rem 0.875rem;
  border-radius: 999px;
  color: var(--white);
  background: var(--deep);
}

.hero-title {
  max-width: 42rem;
  color: var(--ink);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.25;
  text-wrap: balance;
}

.hero-title em {
  color: var(--accent);
  font-style: normal;
}

.hero-copy {
  max-width: 42rem;
  margin-top: 1.75rem;
  color: var(--muted);
  font-size: 1.125rem;
  line-height: 2rem;
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  margin-top: 2rem;
  gap: 0.6rem;
}

.primary-action {
  display: inline-flex;
  min-height: 3.25rem;
  align-items: center;
  justify-content: center;
  padding: 0 1.35rem;
  gap: 1.1rem;
  border: 1px solid var(--download);
  border-radius: 6px;
  color: var(--download-ink);
  background: var(--download);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  transition: background 160ms ease-out, border-color 160ms ease-out, transform 160ms ease-out;
}

.primary-action:hover,
.header-cta:hover {
  border-color: var(--download-hover);
  background: var(--download-hover);
}

.primary-action:active,
.header-cta:active {
  transform: translateY(1px);
}

.primary-action:focus-visible,
.header-cta:focus-visible,
.secondary-action:focus-visible {
  outline: 3px solid var(--deep);
  outline-offset: 4px;
}

.action-icon {
  width: 1.25rem;
  height: 1.25rem;
  flex: 0 0 auto;
}

.action-icon-download {
  filter: brightness(0) invert(1);
  transform: rotate(45deg);
}

.secondary-action {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  color: var(--deep);
  font-size: 1rem;
  font-weight: 800;
  white-space: nowrap;
}

.secondary-action:hover {
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

.action-note {
  margin-top: 0.85rem;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.7;
  text-align: center;
}

.hero-platforms {
  display: flex;
  align-items: center;
  margin-top: 1.25rem;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.75rem;
}

.hero-visual {
  position: relative;
  min-height: 33.75rem;
  margin-top: 2.5rem;
}

.hero-bubble {
  position: absolute;
  z-index: 10;
  top: 1.25rem;
  right: 0;
  padding: 0.75rem 1rem;
  transform: rotate(3deg);
  border: 2px solid var(--deep);
  border-radius: 999px;
  background: var(--white);
  font-size: 0.75rem;
  font-weight: 800;
}

.hero-phone {
  position: absolute;
  top: 1.25rem;
  left: 50%;
  width: 16.25rem;
  height: 32.5rem;
  overflow: hidden;
  transform: translateX(-50%) rotate(3deg);
  border: 10px solid var(--ink);
  border-radius: 2.25rem;
  background: var(--ink);
  box-shadow: 1.25rem 1.5rem 0 rgb(32 48 31 / 12%);
}

.hero-speaker {
  position: absolute;
  z-index: 10;
  top: 0.625rem;
  left: 50%;
  width: 4rem;
  height: 0.375rem;
  transform: translateX(-50%);
  border-radius: 999px;
  background: var(--ink);
}

.hero-screen {
  height: 100%;
  overflow: hidden;
  padding: 7px 6px 9px;
  border-radius: 1.5625rem;
  background: var(--white);
}

.hero-app-screen {
  width: 100%;
  height: 100%;
  border-radius: 0.75rem;
  object-fit: contain;
}

.hero-mascot {
  position: absolute;
  z-index: 10;
  right: 0;
  bottom: 0;
  width: 7rem;
  height: 7rem;
  object-fit: contain;
  filter: drop-shadow(0 4px 4px rgb(0 0 0 / 15%));
}

.hero-stamp {
  position: absolute;
  display: grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  border: 2px solid var(--deep);
  font-weight: 900;
}

.hero-stamp-left {
  bottom: 2.5rem;
  left: 0;
  transform: rotate(-6deg);
  background: #f4b4c1;
}

.hero-stamp-right {
  top: 7rem;
  right: 2rem;
  transform: rotate(6deg);
  background: #fef3c7;
}

.about-section {
  padding-block: 5rem;
  color: var(--white);
  background: var(--deep);
}

.about-layout {
  display: grid;
  align-items: center;
  gap: 2rem;
}

.about-kicker,
.section-kicker {
  margin-bottom: 1rem;
  color: #bef264;
  font-weight: 900;
}

.about-section h2,
.section-title,
.feature-showcase-heading h2 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.25;
  text-wrap: balance;
}

.about-copy {
  color: #e7e5e4;
  line-height: 2rem;
}

.section-space,
.feature-showcase {
  scroll-margin-top: 5rem;
  padding-block: 3.5rem;
}

.section-head {
  text-align: center;
}

.section-copy {
  margin-top: 1.25rem;
  color: var(--muted);
  line-height: 2rem;
}

.feature-showcase {
  color: var(--ink);
  background: var(--surface);
}

.feature-showcase-heading {
  display: grid;
  align-items: end;
  gap: 2rem;
}

.feature-showcase-heading > p {
  color: var(--muted);
  line-height: 2rem;
}

.feature-showcase-body {
  display: grid;
  align-items: start;
  min-width: 0;
  margin-top: 3rem;
  gap: 2.5rem;
}

.feature-showcase-body > figure {
  width: 100%;
  min-width: 0;
  padding: 1.5rem;
  border-radius: 0.5rem;
  color: var(--deep);
  background: #ecfccb;
}

.feature-showcase-body > figure > div {
  width: min(18rem, 100%);
  max-width: 100%;
  height: 18rem;
  overflow: hidden;
  margin-inline: auto;
  border-radius: 0.5rem;
}

.feature-showcase-body figure img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.feature-showcase-body figcaption {
  display: flex;
  flex-direction: column;
  margin-top: 1.25rem;
  gap: 0.5rem;
  text-align: center;
}

.feature-showcase-body figcaption b {
  font-size: 1.125rem;
}

.feature-showcase-body figcaption span,
.feature-showcase-list p,
.experience-list p {
  color: var(--muted);
  font-size: 0.875rem;
}

.feature-showcase-list {
  border-top: 1px solid var(--line);
}

.feature-showcase-list article {
  display: flex;
  padding-block: 1.25rem;
  gap: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.feature-showcase-list article > span {
  flex: none;
  color: #4d7c0f;
  font-size: 0.875rem;
  font-weight: 900;
}

.feature-showcase-list h3,
.experience-list h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

.feature-showcase-list p {
  margin-top: 0.5rem;
  line-height: 1.75rem;
}

.experience-section {
  background: var(--lavender);
}

.section-kicker {
  color: #4d7c0f;
}

.experience-list {
  display: grid;
  min-width: 0;
  margin-top: 4rem;
  gap: 3rem;
}

.experience-list article {
  min-width: 0;
  text-align: center;
}

.experience-list article > div {
  width: min(15rem, 100%);
  height: 27rem;
  overflow: hidden;
  margin-inline: auto;
  border-radius: 0.5rem;
}

.experience-list img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.experience-list h3 {
  margin: 1.25rem 0 0.5rem;
}

.community-section {
  overflow: hidden;
  background: var(--white);
}

.community-identity {
  display: flex;
  width: fit-content;
  align-items: center;
  margin: 2rem auto 0;
  padding: 0.5rem 1.25rem;
  gap: 0.75rem;
  border-radius: 999px;
  background: #ecfccb;
}

.community-identity img {
  width: 3rem;
  height: 3rem;
  object-fit: contain;
}

.community-identity p {
  color: var(--deep);
  font-size: 0.875rem;
  font-weight: 700;
}

.review-list {
  display: grid;
  margin-top: 2rem;
  gap: 1rem;
}

.review-list figure {
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  border-radius: 0.5rem;
  background: var(--surface);
}

.review-list figure > span {
  color: #4d7c0f;
  font-size: 0.75rem;
  font-weight: 700;
}

.review-list blockquote {
  margin-top: 1rem;
  color: #44403c;
  font-size: 0.875rem;
  line-height: 1.5rem;
}

.review-list figcaption {
  display: flex;
  align-items: center;
  margin-top: auto;
  padding-top: 1.25rem;
  gap: 0.5rem;
}

.review-list figcaption i {
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border: 1px solid #d6d3d1;
  border-radius: 50%;
  color: #57534e;
  background: transparent;
  font-size: 0.75rem;
  font-style: normal;
  font-weight: 400;
}

.review-list b {
  color: #292524;
  font-size: 0.875rem;
}

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

.faq-list {
  margin-top: 1.5rem;
  border-top: 1px solid #d6d3d1;
}

.faq-list details {
  border-bottom: 1px solid #d6d3d1;
}

.faq-list summary {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  list-style: none;
  font-weight: 800;
}

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

.faq-list summary span::before {
  content: "＋";
}

.faq-list details[open] summary span::before {
  content: "−";
}

.faq-list details p {
  margin-bottom: 1.5rem;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.75rem;
}

.site-footer {
  color: var(--white);
  background: var(--deep);
}

.footer-layout {
  display: grid;
  padding-block: 3rem;
  gap: 2.5rem;
}

.footer-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.footer-brand > p:not(.footer-title),
.footer-community span {
  display: block;
  max-width: 28rem;
  margin-top: 1rem;
  color: #d6d3d1;
  font-size: 0.875rem;
  line-height: 1.75rem;
}

.footer-brand > a {
  margin-top: 1.5rem;
}

.footer-brand > a:focus-visible {
  outline-color: #fff;
}

.footer-nav > p,
.footer-community > p {
  margin-bottom: 1rem;
  color: #d9f99d;
  font-size: 0.875rem;
  font-weight: 700;
}

.footer-nav div {
  display: grid;
  gap: 0.75rem;
  color: #d6d3d1;
  font-size: 0.875rem;
}

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

.footer-community span {
  margin-top: 0;
}

.footer-bottom {
  border-top: 1px solid rgb(255 255 255 / 10%);
}

.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-block: 1.25rem;
  gap: 0.5rem;
  color: #a8a29e;
  font-size: 0.75rem;
}

.mobile-download {
  display: none;
}

@media (max-width: 47.999rem) {
  body {
    padding-bottom: calc(4.5rem + env(safe-area-inset-bottom, 0px));
  }

  .hero-kicker {
    margin-bottom: 1.1rem;
  }

  .hero-title {
    font-size: 2rem;
    line-height: 1.3;
    text-wrap: initial;
  }

  .hero-copy {
    margin-top: 1.1rem;
    font-size: 1rem;
    line-height: 1.85;
  }

  .hero-actions {
    margin-top: 1.5rem;
  }

  .footer-brand > a {
    width: 100%;
  }

  .mobile-download {
    position: fixed;
    inset: auto 0 0;
    z-index: 50;
    display: block;
    padding-bottom: env(safe-area-inset-bottom, 0px);
    border-top: 1px solid var(--line);
    background: rgb(250 250 249 / 98%);
    backdrop-filter: blur(0.75rem);
  }

  .mobile-download-inner {
    display: grid;
    width: min(100% - 2rem, var(--page));
    min-height: 4.5rem;
    grid-template-columns: 2.5rem minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.6rem;
    margin-inline: auto;
    padding-block: 0.6rem;
  }

  .mobile-download-logo {
    width: 2.5rem;
    height: 2.5rem;
    object-fit: contain;
    border-radius: 8px;
  }

  .mobile-download strong,
  .mobile-download span {
    display: block;
    line-height: 1.4;
  }

  .mobile-download strong {
    font-size: 0.9rem;
    font-weight: 750;
  }

  .mobile-download span {
    margin-top: 0.2rem;
    color: var(--muted);
    font-size: 0.7rem;
  }

  .mobile-download .primary-action {
    min-height: 2.75rem;
    padding-inline: 0.85rem;
    gap: 0.45rem;
    font-size: 0.875rem;
  }

  .mobile-download .action-icon {
    width: 1.125rem;
    height: 1.125rem;
  }
}

@media (max-width: 360px) {
  .hero-title {
    font-size: 1.75rem;
  }

  .mobile-download-inner {
    width: calc(100% - 1.5rem);
    gap: 0.5rem;
  }

  .mobile-download .primary-action {
    padding-inline: 0.7rem;
    gap: 0.35rem;
  }
}

@media (min-width: 48rem) {
  .page-shell {
    width: min(100% - 3rem, var(--page));
  }

  .header-shell {
    min-height: 5rem;
    padding-inline: 1.5rem;
    gap: 1.75rem;
  }

  .header-logo {
    height: 3rem;
  }

  .header-cta {
    padding-inline: 1.25rem;
  }

  .hero-shell {
    width: min(100% - 3rem, var(--page));
    padding-block: 4rem;
  }

  .hero-title {
    font-size: 3.75rem;
  }

  .hero-actions {
    flex-flow: row wrap;
    align-items: center;
    gap: 1.8rem;
  }

  .hero-actions .primary-action {
    min-width: 12rem;
  }

  .hero-actions .secondary-action {
    border-bottom: 1px solid var(--line);
  }

  .action-note {
    text-align: left;
  }

  .about-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 5rem;
  }

  .about-section h2,
  .section-title,
  .feature-showcase-heading h2 {
    font-size: 3rem;
  }

  .section-space,
  .feature-showcase {
    padding-block: 5rem;
  }

  .feature-showcase-body > figure > div {
    width: 20rem;
    height: 20rem;
  }

  .experience-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
  }

  .review-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-layout {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding-block: 4rem;
    gap: 4rem;
  }

  .footer-meta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
  }
}

@media (min-width: 64rem) {
  .brand-link {
    flex: none;
  }

  .site-nav {
    display: flex;
  }

  .header-cta {
    margin-left: 0;
  }

  .hero-shell {
    display: grid;
    min-height: 43.75rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: center;
    padding-block: 5rem;
    gap: 5rem;
  }

  .hero-visual {
    min-height: 36.875rem;
    margin-top: 0;
  }

  .hero-phone {
    width: 17.875rem;
    height: 35.875rem;
    transform: translateX(-45%) rotate(3deg);
  }

  .section-space {
    padding-block: 8rem;
  }

  .feature-showcase {
    padding-block: 7rem;
  }

  .feature-showcase-heading {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-showcase-body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .review-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 120rem) {
  .hero-section::before {
    right: calc((100vw - var(--page)) / 2 - 9rem);
    bottom: -12rem;
    width: 44rem;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}