:root {
  color-scheme: light;
  --paper: #fff8eb;
  --paper-deep: #f7e8d4;
  --surface: #fffdf8;
  --ink: #523e35;
  --ink-soft: #8d7264;
  --line: #ead6c1;
  --coral: #f26f5f;
  --coral-dark: #df594b;
  --apricot: #d99569;
  --shadow: 0 22px 60px rgba(112, 72, 50, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 100% 4%, rgba(242, 111, 95, 0.13), transparent 31rem),
    radial-gradient(circle at 0% 84%, rgba(217, 149, 105, 0.11), transparent 28rem),
    var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

.page-shell {
  width: min(100%, 1180px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 88px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.brand img {
  width: 46px;
  height: 46px;
  border: 1px solid rgba(82, 62, 53, 0.1);
  border-radius: 15px;
  box-shadow: 0 8px 18px rgba(112, 72, 50, 0.12);
  object-fit: cover;
}

.official-badge {
  padding: 8px 13px;
  border: 1px solid rgba(217, 149, 105, 0.35);
  border-radius: 999px;
  color: var(--ink-soft);
  background: rgba(255, 253, 248, 0.62);
  font-size: 0.82rem;
  font-weight: 600;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(330px, 0.82fr);
  align-items: center;
  gap: clamp(36px, 7vw, 98px);
  min-height: calc(100vh - 154px);
  padding: 38px 2px 58px;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 610px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  color: var(--apricot);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.eyebrow span {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: 50%;
  color: var(--coral);
  background: #ffe0d7;
}

h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(3.3rem, 6.4vw, 5.8rem);
  font-weight: 650;
  line-height: 1.08;
  letter-spacing: -0.055em;
}

h1 span {
  position: relative;
  display: inline-block;
  color: var(--coral);
}

h1 span::after {
  position: absolute;
  right: 0;
  bottom: -11px;
  width: 72%;
  height: 7px;
  border-radius: 999px;
  background: var(--apricot);
  content: "";
  transform: rotate(-1.5deg);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(4, max-content);
  gap: 9px;
  margin: 34px 0 28px;
  padding: 0;
  list-style: none;
}

.feature-list li {
  display: flex;
  min-height: 38px;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid rgba(217, 149, 105, 0.3);
  border-radius: 14px;
  color: var(--ink-soft);
  background: rgba(255, 253, 248, 0.72);
  box-shadow: 0 6px 18px rgba(112, 72, 50, 0.05);
  font-size: 0.88rem;
  font-weight: 600;
  white-space: nowrap;
}

.feature-list li::before {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border: 3px solid #ffd7ca;
  border-radius: 50%;
  background: var(--coral);
  content: "";
}

.download-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: 590px;
}

.download-button {
  display: flex;
  min-height: 78px;
  align-items: center;
  gap: 12px;
  border-radius: 22px;
  padding: 12px 15px;
  font: inherit;
  text-align: left;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.download-button:focus-visible {
  outline: 3px solid rgba(242, 111, 95, 0.35);
  outline-offset: 4px;
}

.android-button,
.ios-button {
  position: relative;
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(255, 253, 248, 0.82);
  cursor: pointer;
}

.android-button:hover,
.ios-button:hover {
  border-color: #d9baa0;
  box-shadow: 0 12px 28px rgba(112, 72, 50, 0.1);
  transform: translateY(-2px);
}

.android-button:active,
.ios-button:active {
  transform: translateY(0);
}

.android-button .button-icon {
  color: var(--coral-dark);
  background: var(--paper-deep);
}

.button-icon {
  display: grid;
  width: 43px;
  height: 43px;
  flex: 0 0 43px;
  place-items: center;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.17);
}

.button-icon svg {
  width: 27px;
  height: 27px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.apple-icon {
  color: var(--ink);
  background: var(--paper-deep);
}

.apple-icon svg {
  width: 25px;
  height: 25px;
  overflow: visible;
  fill: currentColor;
  stroke: none;
}

.button-copy {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.button-copy small {
  font-size: 0.76rem;
  line-height: 1;
  opacity: 0.78;
}

.button-copy strong {
  font-size: 1rem;
  line-height: 1.2;
  white-space: nowrap;
}

.download-arrow {
  width: 23px;
  height: 23px;
  margin-left: auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.download-note {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 17px 4px 0;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.download-note svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: var(--apricot);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.product-visual {
  position: relative;
  display: grid;
  min-height: 660px;
  place-items: center;
}

.visual-halo {
  position: absolute;
  inset: 6% 0 0 5%;
  border-radius: 48% 52% 47% 53% / 52% 44% 56% 48%;
  background: linear-gradient(155deg, #f7c9aa 0%, #f2a98e 43%, #fbd9c7 100%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.5);
  transform: rotate(4deg);
}

.phone-frame {
  position: relative;
  z-index: 2;
  width: min(320px, 82vw);
  height: 650px;
  overflow: hidden;
  border: 4px solid rgba(82, 62, 53, 0.92);
  border-radius: 48px;
  background: var(--surface);
  box-shadow: 0 24px 58px rgba(112, 72, 50, 0.2), 0 0 0 1px rgba(255, 255, 255, 0.7);
  transform: rotate(-1.1deg);
}

.phone-frame::after {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(82, 62, 53, 0.08);
  border-radius: 38px;
  content: "";
  pointer-events: none;
}

.phone-frame img {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 38px;
  object-fit: cover;
  object-position: center top;
}

.floating-note {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 11px 15px;
  border: 1px solid rgba(234, 214, 193, 0.85);
  border-radius: 17px;
  color: var(--ink);
  background: rgba(255, 253, 248, 0.92);
  box-shadow: 0 12px 32px rgba(112, 72, 50, 0.14);
  font-size: 0.85rem;
  font-weight: 700;
  backdrop-filter: blur(10px);
}

.floating-note span {
  display: grid;
  width: 26px;
  height: 26px;
  place-items: center;
  border-radius: 9px;
  color: var(--coral);
  background: #ffe0d7;
  font-size: 1rem;
}

.note-top {
  top: 68px;
  right: -10px;
  transform: rotate(3deg);
}

.note-bottom {
  bottom: 72px;
  left: -18px;
  transform: rotate(-4deg);
}

.floating-note .paw {
  color: var(--coral-deep);
}

.floating-note .paw svg {
  width: 18px;
  height: 18px;
  overflow: visible;
  fill: currentColor;
}

.site-footer {
  display: flex;
  min-height: 66px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid rgba(234, 214, 193, 0.7);
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.site-footer a {
  color: inherit;
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent-deep);
}

.footer-meta {
  display: flex;
  align-items: center;
  gap: 14px;
}

.policy-links {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.policy-links a {
  padding-block: 4px;
  text-decoration: underline;
  text-decoration-color: rgba(141, 114, 100, 0.36);
  text-underline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

@media (max-width: 920px) {
  .page-shell {
    padding: 0 20px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-top: 28px;
  }

  .hero-copy {
    max-width: 690px;
    margin: 0 auto;
    text-align: center;
  }

  .eyebrow {
    justify-content: center;
  }

  .feature-list {
    justify-content: center;
  }

  .download-panel {
    margin: 0 auto;
  }

  .download-note {
    justify-content: center;
  }

  .product-visual {
    min-height: 610px;
    margin: 0 auto;
    width: min(100%, 530px);
  }

  .phone-frame {
    height: 590px;
  }

  .visual-halo {
    inset: 5% 4% 0;
  }
}

@media (max-width: 600px) {
  html,
  body {
    height: 100%;
    overflow: hidden;
  }

  .page-shell {
    position: relative;
    height: 100svh;
    overflow: hidden;
    padding: 0 16px;
  }

  .site-header {
    min-height: 64px;
  }

  .brand {
    gap: 9px;
    font-size: 0.98rem;
  }

  .brand img {
    width: 40px;
    height: 40px;
    border-radius: 13px;
  }

  .official-badge {
    padding: 7px 10px;
    font-size: 0.72rem;
  }

  .hero {
    grid-template-rows: auto minmax(0, 1fr);
    gap: 10px;
    height: calc(100svh - 88px);
    min-height: 0;
    padding: 12px 0 10px;
  }

  .hero-copy {
    text-align: left;
  }

  .eyebrow {
    justify-content: flex-start;
    margin-bottom: 10px;
    font-size: 0.76rem;
  }

  h1 {
    font-size: clamp(2.5rem, 12vw, 3.3rem);
    line-height: 1.06;
  }

  h1 span::after {
    bottom: -8px;
    height: 5px;
  }

  .feature-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 7px;
    margin: 20px 0 14px;
  }

  .feature-list li {
    min-height: 34px;
    justify-content: center;
    padding: 6px 9px;
    border-radius: 12px;
    font-size: 0.78rem;
  }

  .download-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .download-button {
    min-height: 64px;
    gap: 8px;
    padding: 9px 10px;
    border-radius: 18px;
  }

  .button-icon {
    width: 37px;
    height: 37px;
    flex-basis: 37px;
    border-radius: 12px;
  }

  .button-icon svg {
    width: 23px;
    height: 23px;
  }

  .button-copy small {
    font-size: 0.66rem;
  }

  .button-copy strong {
    font-size: 0.86rem;
  }

  .download-arrow {
    display: none;
  }

  .download-note {
    justify-content: flex-start;
    margin-top: 10px;
    font-size: 0.72rem;
  }

  .product-visual {
    align-self: stretch;
    width: min(100%, 390px);
    min-height: 0;
    height: 100%;
    max-height: 325px;
    margin-top: 0;
  }

  .visual-halo {
    inset: 8% 7% 0;
  }

  .phone-frame {
    width: auto;
    height: min(100%, 310px);
    aspect-ratio: 577 / 1186;
    border-width: 3px;
    border-radius: 29px;
  }

  .phone-frame img,
  .phone-frame::after {
    border-radius: 23px;
  }

  .floating-note {
    padding: 7px 9px;
    border-radius: 12px;
    font-size: 0.68rem;
  }

  .note-top {
    top: 36px;
    right: 11px;
  }

  .note-bottom {
    bottom: 32px;
    left: 10px;
  }

  .site-footer {
    position: absolute;
    z-index: 5;
    right: 16px;
    bottom: 10px;
    left: 16px;
    display: flex;
    min-height: 0;
    justify-content: center;
    gap: 2px;
    border: 0;
    font-size: 0.62rem;
    line-height: 1.35;
    text-align: center;
  }

  .footer-meta {
    display: grid;
    justify-items: center;
    gap: 1px;
  }

  .policy-links {
    gap: 12px;
  }

  .footer-slogan {
    display: none;
  }

}

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

  .download-button {
    transition: none;
  }
}