:root {
  --ink: #0b1735;
  --ink-soft: #172445;
  --muted: #69758d;
  --line: #e5e9f2;
  --surface: #ffffff;
  --surface-soft: #f7f8fc;
  --violet: #6d38e8;
  --blue: #1678f2;
  --gradient: linear-gradient(115deg, #6d38e8 0%, #3f58ed 48%, #1678f2 100%);
  --shadow-sm: 0 10px 32px rgba(23, 39, 82, 0.09);
  --shadow-lg: 0 30px 70px rgba(36, 53, 104, 0.14);
  --radius-sm: 14px;
  --radius-md: 20px;
  --radius-lg: 30px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
}

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

.container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 24px;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand img,
.footer-brand img {
  border-radius: 13px;
  box-shadow: 0 8px 20px rgba(67, 55, 165, 0.16);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 28px;
}

.privacy-link {
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 600;
}

.privacy-link:hover,
.footer-links a:hover {
  color: var(--violet);
}

.store-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 10px 18px;
  border-radius: 13px;
  font-size: 14px;
  font-weight: 750;
  line-height: 1;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.store-button svg {
  width: 21px;
  height: 21px;
  fill: currentColor;
}

.store-button:hover,
.primary-download:hover {
  transform: translateY(-2px);
}

.store-button-dark {
  background: #07090e;
  color: #fff;
  box-shadow: 0 8px 20px rgba(5, 10, 23, 0.16);
}

.hero {
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 88% 18%, rgba(61, 100, 246, 0.07), transparent 28%),
    #fff;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(520px, 1.08fr);
  align-items: center;
  min-height: 710px;
  gap: 36px;
  padding-block: 78px 72px;
}

.hero-copy {
  position: relative;
  z-index: 2;
  padding-left: 4px;
}

.hero h1 {
  max-width: 650px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(50px, 5vw, 72px);
  font-weight: 850;
  letter-spacing: -0.055em;
  line-height: 1.16;
}

.hero h1 span {
  color: transparent;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-lead {
  max-width: 570px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.75;
}

.primary-download {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  min-height: 62px;
  margin-top: 34px;
  padding: 13px 22px;
  border-radius: 16px;
  background: var(--gradient);
  color: #fff;
  font-size: 18px;
  font-weight: 760;
  box-shadow: 0 15px 32px rgba(76, 69, 226, 0.25);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.primary-download:hover {
  box-shadow: 0 19px 38px rgba(76, 69, 226, 0.3);
}

.apple-icon {
  width: 27px;
  height: 27px;
  fill: currentColor;
}

.arrow-icon {
  width: 22px;
  height: 22px;
  margin-left: 6px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.region-note {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 18px 0 0;
  color: #78839a;
  font-size: 14px;
}

.region-note svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
}

.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 24px;
  margin: 30px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
  color: #69758d;
  font-size: 13px;
  font-weight: 620;
}

.trust-list li {
  display: flex;
  align-items: center;
  gap: 7px;
}

.trust-list svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.hero-product {
  position: relative;
  min-width: 0;
}

.route-line {
  position: absolute;
  top: -105px;
  right: -120px;
  width: 690px;
  height: 660px;
  overflow: visible;
  pointer-events: none;
}

.route-line path {
  fill: none;
  stroke: rgba(84, 107, 245, 0.24);
  stroke-width: 2;
}

.route-line circle {
  fill: #fff;
  stroke: rgba(62, 91, 241, 0.76);
  stroke-width: 5;
  filter: drop-shadow(0 0 8px rgba(62, 91, 241, 0.38));
}

.product-frame {
  position: relative;
  z-index: 2;
  overflow: hidden;
  width: min(100%, 600px);
  margin-left: auto;
  border: 1px solid rgba(208, 215, 229, 0.95);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-lg);
  transform: rotate(0.6deg);
}

.product-frame-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  border-bottom: 1px solid var(--line);
}

.product-app {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.product-app img {
  border-radius: 20px;
  box-shadow: 0 8px 22px rgba(56, 47, 138, 0.15);
}

.product-app div {
  display: grid;
  min-width: 0;
  gap: 4px;
}

.product-app strong {
  font-size: 20px;
}

.product-app span {
  overflow: hidden;
  color: var(--muted);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.product-status {
  flex: 0 0 auto;
  padding: 7px 10px;
  border-radius: 9px;
  background: #edf4ff;
  color: #196ee4;
  font-size: 12px;
  font-weight: 720;
}

.store-preview {
  width: 100%;
  height: auto;
}

.product-foot {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 48px;
  border-top: 1px solid var(--line);
  color: #6f7b90;
  font-size: 12px;
  font-weight: 650;
}

.product-foot i {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #adb6c6;
}

.benefits {
  padding: 96px 0 82px;
  background: #fff;
}

.benefits h2 {
  margin: 0;
  text-align: center;
  font-size: clamp(31px, 3.5vw, 44px);
  letter-spacing: -0.04em;
  line-height: 1.25;
}

.benefit-rail {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 58px;
}

.benefit-item {
  padding: 4px 58px 8px;
  text-align: center;
}

.benefit-item + .benefit-item {
  border-left: 1px solid var(--line);
}

.benefit-icon {
  display: grid;
  place-items: center;
  width: 78px;
  height: 78px;
  margin: 0 auto 22px;
  border: 1px solid rgba(93, 71, 232, 0.13);
  border-radius: 50%;
  background: linear-gradient(145deg, #f2efff, #f1f7ff);
  box-shadow: inset 0 0 0 7px rgba(255, 255, 255, 0.75);
}

.benefit-icon svg {
  width: 44px;
  height: 44px;
  fill: none;
  stroke: var(--violet);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.benefit-item h3 {
  margin: 0;
  font-size: 21px;
}

.benefit-item p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.download-section {
  padding: 18px 0 72px;
}

.download-band {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 32px;
  overflow: hidden;
  min-height: 230px;
  padding: 42px 50px;
  border-radius: 27px;
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 25px 60px rgba(65, 69, 217, 0.2);
}

.download-band::before,
.download-band::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
}

.download-band::before {
  top: -170px;
  right: 16%;
  width: 360px;
  height: 360px;
}

.download-band::after {
  bottom: -220px;
  right: -40px;
  width: 390px;
  height: 390px;
}

.download-band > * {
  position: relative;
  z-index: 2;
}

.download-band > img {
  border-radius: 30px;
  box-shadow: 0 16px 30px rgba(20, 28, 86, 0.22);
}

.download-copy h2 {
  margin: 0;
  font-size: clamp(27px, 3vw, 38px);
  letter-spacing: -0.035em;
}

.download-copy p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 15px;
  line-height: 1.7;
}

.store-button-light {
  min-height: 58px;
  padding-inline: 22px;
  background: #fff;
  color: var(--ink);
  box-shadow: 0 12px 28px rgba(24, 31, 88, 0.18);
  font-size: 15px;
}

.region-help {
  padding-bottom: 72px;
}

.help-strip {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 25px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fbfcff;
}

.help-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 15px;
  background: linear-gradient(145deg, #f0ecff, #eef6ff);
  color: var(--violet);
}

.help-icon svg {
  width: 30px;
  height: 30px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.help-strip h2 {
  margin: 0;
  font-size: 19px;
}

.help-strip p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.help-strip > a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--violet);
  font-size: 14px;
  font-weight: 720;
}

.help-strip > a svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 26px;
  min-height: 104px;
}

.footer-brand {
  font-size: 16px;
}

.footer-inner > p {
  margin: 0;
  color: #8992a4;
  font-size: 12px;
}

.footer-links {
  display: flex;
  justify-content: flex-end;
  gap: 24px;
  color: #68738a;
  font-size: 13px;
}

a:focus-visible {
  outline: 3px solid rgba(22, 120, 242, 0.42);
  outline-offset: 4px;
}

@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 58px;
    padding-block: 64px 72px;
  }

  .hero-copy {
    max-width: 730px;
  }

  .product-frame {
    width: min(100%, 720px);
    margin-inline: auto;
  }

  .route-line {
    left: 50%;
    right: auto;
    transform: translateX(-45%);
  }

  .benefit-item {
    padding-inline: 30px;
  }

  .download-band {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .download-band .store-button {
    grid-column: 2;
    justify-self: start;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(calc(100% - 32px), var(--container));
  }

  .header-inner {
    min-height: 70px;
  }

  .brand {
    font-size: 17px;
  }

  .brand img {
    width: 42px;
    height: 42px;
  }

  .privacy-link {
    display: none;
  }

  .store-button-dark {
    min-height: 42px;
    padding: 8px 12px;
    font-size: 12px;
  }

  .store-button-dark svg {
    width: 18px;
    height: 18px;
  }

  .hero-grid {
    gap: 44px;
    min-height: auto;
    padding-block: 50px 56px;
  }

  .hero h1 {
    font-size: clamp(39px, 11.2vw, 56px);
    letter-spacing: -0.06em;
  }

  .hero-lead {
    margin-top: 20px;
    font-size: 16px;
  }

  .primary-download {
    width: 100%;
    min-height: 58px;
    margin-top: 27px;
    justify-content: center;
    font-size: 16px;
  }

  .trust-list {
    gap: 14px 18px;
    margin-top: 25px;
    padding-top: 20px;
  }

  .product-frame {
    border-radius: 22px;
    transform: none;
  }

  .product-frame-top {
    padding: 16px;
  }

  .product-app img {
    width: 58px;
    height: 58px;
    border-radius: 16px;
  }

  .product-app strong {
    font-size: 17px;
  }

  .product-status {
    display: none;
  }

  .product-foot {
    gap: 8px;
    font-size: 10px;
  }

  .benefits {
    padding: 70px 0 60px;
  }

  .benefits h2 {
    text-align: left;
    font-size: 30px;
  }

  .benefit-rail {
    grid-template-columns: 1fr;
    margin-top: 38px;
  }

  .benefit-item {
    display: grid;
    grid-template-columns: 66px minmax(0, 1fr);
    gap: 4px 18px;
    padding: 24px 0;
    text-align: left;
  }

  .benefit-item + .benefit-item {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .benefit-icon {
    grid-row: 1 / 3;
    width: 62px;
    height: 62px;
    margin: 0;
  }

  .benefit-icon svg {
    width: 36px;
    height: 36px;
  }

  .benefit-item h3 {
    align-self: end;
    font-size: 18px;
  }

  .benefit-item p {
    margin-top: 2px;
    font-size: 13px;
  }

  .download-section {
    padding: 8px 0 52px;
  }

  .download-band {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 30px 24px;
    border-radius: 22px;
    text-align: center;
  }

  .download-band > img {
    width: 86px;
    height: 86px;
    margin-inline: auto;
    border-radius: 24px;
  }

  .download-band .store-button {
    grid-column: auto;
    width: 100%;
    justify-self: stretch;
  }

  .download-copy h2 {
    font-size: 27px;
  }

  .download-copy p {
    font-size: 14px;
  }

  .region-help {
    padding-bottom: 52px;
  }

  .help-strip {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 14px;
    padding: 20px;
  }

  .help-icon {
    width: 46px;
    height: 46px;
  }

  .help-strip > a {
    grid-column: 2;
    margin-top: 3px;
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
    min-height: 92px;
  }

  .footer-inner > p {
    display: none;
  }
}

@media (max-width: 430px) {
  .header-actions {
    gap: 0;
  }

  .store-button-dark span {
    font-size: 0;
  }

  .store-button-dark span::after {
    content: "下载";
    font-size: 12px;
  }

  .hero h1 {
    font-size: 39px;
  }

  .trust-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .product-app span {
    max-width: 160px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 16px;
    padding-block: 24px;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}