:root {
  --ink: #112a3f;
  --ink-soft: #60758a;
  --blue: #279cf0;
  --blue-deep: #1689df;
  --mint: #2fcfa3;
  --mint-soft: #e9fbf5;
  --line: #dceaf3;
  --surface: rgba(255, 255, 255, .82);
  --shadow: 0 24px 70px rgba(31, 91, 126, .14);
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, #f5fffc 0, #f8fbff 33rem, #fff 70rem);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.ambient {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(2px);
  pointer-events: none;
}

.ambient-one {
  top: 3rem;
  left: -14rem;
  width: 33rem;
  height: 33rem;
  background: radial-gradient(circle, rgba(44, 213, 164, .16), transparent 70%);
}

.ambient-two {
  top: 10rem;
  right: -12rem;
  width: 38rem;
  height: 38rem;
  background: radial-gradient(circle, rgba(39, 156, 240, .14), transparent 68%);
}

.section-shell,
.site-header {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid rgba(188, 215, 229, .55);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -.02em;
}

.brand img {
  border-radius: 12px;
  box-shadow: 0 8px 22px rgba(38, 85, 109, .15);
}

.nav-links {
  display: flex;
  gap: 32px;
  color: #547086;
  font-size: 14px;
  font-weight: 600;
}

.nav-links a {
  transition: color .2s ease;
}

.nav-links a:hover {
  color: var(--blue);
}

.header-download {
  padding: 11px 19px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  transition: transform .2s ease, background .2s ease;
}

.header-download:hover {
  background: var(--blue);
  transform: translateY(-2px);
}

.hero {
  min-height: 720px;
  padding-block: 76px 88px;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(380px, .98fr);
  align-items: center;
  gap: 70px;
}

.hero-copy {
  width: 100%;
  min-width: 0;
  max-width: 640px;
}

.eyebrow {
  width: fit-content;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 13px;
  border: 1px solid #d1e8e1;
  border-radius: 999px;
  background: rgba(255, 255, 255, .7);
  color: #407064;
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(66, 118, 105, .08);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 5px rgba(47, 207, 163, .13);
}

h1 {
  margin: 24px 0 20px;
  font-size: clamp(52px, 6.1vw, 82px);
  line-height: 1.06;
  letter-spacing: -.065em;
}

h1 em {
  color: var(--blue);
  font-style: normal;
}

.hero-description {
  width: 100%;
  max-width: 570px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.85;
  overflow-wrap: anywhere;
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
}

.button {
  min-height: 54px;
  padding: 0 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid transparent;
  border-radius: 15px;
  font-size: 15px;
  font-weight: 800;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.button svg {
  width: 21px;
  height: 21px;
}

.button-primary {
  background: linear-gradient(135deg, #2ca5f4, #168be3);
  color: #fff;
  box-shadow: 0 15px 32px rgba(31, 149, 230, .28);
}

.button-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 19px 40px rgba(31, 149, 230, .34);
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, .76);
  color: var(--ink);
}

.button-secondary:hover {
  transform: translateY(-3px);
  background: #fff;
  box-shadow: 0 12px 30px rgba(37, 82, 111, .1);
}

.release-meta {
  margin-top: 23px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #7890a3;
  font-size: 13px;
  font-weight: 600;
}

.release-meta i {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #adc0cd;
}

.safe-row {
  margin-top: 27px;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: #6c8394;
  font-size: 12px;
  font-weight: 700;
}

.safe-row div,
.safe-row button {
  display: flex;
  align-items: center;
  gap: 6px;
}

.safe-row button {
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.safe-row svg {
  width: 17px;
  height: 17px;
  color: var(--mint);
}

.hero-visual {
  position: relative;
  min-height: 610px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.visual-orbit {
  position: absolute;
  border: 1px solid rgba(75, 174, 224, .18);
  border-radius: 50%;
}

.orbit-one {
  width: 500px;
  height: 500px;
}

.orbit-two {
  width: 390px;
  height: 390px;
  border-color: rgba(47, 207, 163, .2);
}

.phone {
  position: relative;
  z-index: 2;
  width: 292px;
  height: 588px;
  padding: 10px;
  border: 7px solid #152c3f;
  border-radius: 44px;
  background: #152c3f;
  box-shadow:
    0 42px 80px rgba(18, 55, 81, .26),
    0 8px 22px rgba(18, 55, 81, .16);
  transform: rotate(2.4deg);
}

.phone-speaker {
  position: absolute;
  z-index: 4;
  top: 9px;
  left: 50%;
  width: 86px;
  height: 22px;
  border-radius: 0 0 14px 14px;
  background: #152c3f;
  transform: translateX(-50%);
}

.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 30px;
  overflow: hidden;
  background: #fff;
}

.phone-screen img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: top;
}

.feature-chip,
.version-card {
  position: absolute;
  z-index: 3;
  border: 1px solid rgba(211, 230, 239, .9);
  background: rgba(255, 255, 255, .9);
  box-shadow: 0 16px 42px rgba(32, 81, 108, .15);
  backdrop-filter: blur(16px);
}

.feature-chip {
  padding: 12px 16px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
}

.feature-chip::before {
  content: "";
  width: 8px;
  height: 8px;
  display: inline-block;
  margin-right: 8px;
  border-radius: 50%;
}

.chip-access {
  top: 104px;
  left: 5px;
}

.chip-access::before {
  background: var(--mint);
}

.chip-cloud {
  top: 182px;
  right: -4px;
}

.chip-cloud::before {
  background: var(--blue);
}

.version-card {
  right: -9px;
  bottom: 78px;
  width: 170px;
  padding: 17px 19px;
  border-radius: 20px;
}

.version-card span,
.version-card small {
  display: block;
  color: #7890a1;
  font-size: 11px;
}

.version-card strong {
  display: block;
  margin: 4px 0 3px;
  font-size: 25px;
}

.trust-strip {
  border-block: 1px solid #e4eef4;
  background: rgba(248, 252, 255, .72);
}

.trust-grid {
  min-height: 118px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.trust-grid > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-right: 1px solid #e4eef4;
}

.trust-grid > div:first-child {
  border-left: 1px solid #e4eef4;
}

.trust-grid strong {
  font-size: 24px;
  letter-spacing: -.03em;
}

.trust-grid span {
  margin-top: 5px;
  color: #7c91a1;
  font-size: 12px;
}

.features {
  padding-block: 120px;
}

.section-heading {
  max-width: 690px;
  margin-bottom: 54px;
}

.section-heading > span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .15em;
}

.section-heading h2 {
  margin: 14px 0 16px;
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.12;
  letter-spacing: -.055em;
}

.section-heading p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.8;
}

.section-heading.compact {
  max-width: 580px;
}

.section-heading.compact h2 {
  font-size: clamp(34px, 4vw, 48px);
}

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

.feature-card {
  position: relative;
  min-height: 300px;
  padding: 30px;
  border: 1px solid #e0ebf2;
  border-radius: var(--radius);
  overflow: hidden;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .55s ease, transform .55s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-card h3 {
  margin: 12px 0 10px;
  font-size: 23px;
  letter-spacing: -.035em;
}

.feature-card p {
  margin: 0;
  color: #6b8192;
  font-size: 14px;
  line-height: 1.75;
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  background: rgba(255, 255, 255, .66);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.card-number {
  position: absolute;
  top: 31px;
  right: 31px;
  color: rgba(17, 42, 63, .28);
  font-size: 12px;
  font-weight: 800;
}

.feature-card-large {
  min-height: 390px;
  grid-column: span 2;
  display: grid;
  grid-template-columns: 60px 1fr;
  align-items: start;
  gap: 20px;
}

.blue-card {
  border: 0;
  color: #fff;
  background:
    radial-gradient(circle at 92% 10%, rgba(255, 255, 255, .22), transparent 25%),
    linear-gradient(135deg, #229cf0, #157cce);
  box-shadow: 0 22px 50px rgba(34, 142, 215, .2);
}

.blue-card p {
  max-width: 570px;
  color: rgba(255, 255, 255, .8);
}

.blue-card .card-number {
  color: rgba(255, 255, 255, .55);
}

.task-pills {
  grid-column: 1 / -1;
  align-self: end;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.task-pills span {
  min-height: 51px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .25);
  border-radius: 13px;
  background: rgba(255, 255, 255, .09);
  color: rgba(255, 255, 255, .86);
  font-size: 14px;
  font-weight: 700;
}

.task-pills .active {
  background: #fff;
  color: var(--blue-deep);
}

.mint-card {
  border: 0;
  background:
    radial-gradient(circle at 100% 0, rgba(255, 255, 255, .75), transparent 38%),
    #dff8ef;
}

.dark-card {
  border: 0;
  color: #fff;
  background:
    radial-gradient(circle at 100% 0, rgba(47, 207, 163, .24), transparent 35%),
    #173349;
}

.dark-card p {
  color: rgba(255, 255, 255, .68);
}

.dark-card .card-number {
  color: rgba(255, 255, 255, .35);
}

.white-card {
  background: #fff;
  box-shadow: 0 15px 45px rgba(44, 81, 105, .07);
}

.feature-card-wide {
  min-height: 270px;
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 30px;
}

.wide-copy {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 20px;
}

.mode-switch {
  padding: 9px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
  border: 1px solid #dbe8f0;
  border-radius: 18px;
  background: #f7fafc;
}

.mode-switch span {
  min-height: 74px;
  padding: 12px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #687f91;
  font-size: 13px;
  font-weight: 700;
  text-align: center;
}

.mode-switch .selected {
  color: #fff;
  background: linear-gradient(135deg, #35a9f4, #218ddb);
  box-shadow: 0 8px 18px rgba(42, 145, 218, .22);
}

.workflow {
  padding-block: 112px;
  background:
    radial-gradient(circle at 85% 15%, rgba(49, 209, 164, .12), transparent 25%),
    #f2f8fc;
}

.workflow-inner {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 72px;
}

.steps {
  display: grid;
  gap: 12px;
}

.steps article {
  min-height: 108px;
  padding: 22px;
  display: flex;
  align-items: center;
  gap: 18px;
  border: 1px solid #dfeaf1;
  border-radius: 20px;
  background: rgba(255, 255, 255, .82);
}

.steps article > span {
  flex: 0 0 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: #e9f6ff;
  color: var(--blue);
  font-size: 16px;
  font-weight: 900;
}

.steps h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.steps p {
  margin: 0;
  color: #708697;
  font-size: 13px;
  line-height: 1.6;
}

.download-panel {
  grid-column: 1 / -1;
  margin-top: 8px;
  padding: 28px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  border-radius: 25px;
  background: #fff;
  box-shadow: var(--shadow);
}

.download-brand {
  display: flex;
  align-items: center;
  gap: 18px;
}

.download-brand img {
  border-radius: 21px;
  box-shadow: 0 12px 30px rgba(26, 76, 105, .14);
}

.download-brand span {
  color: var(--mint);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .08em;
}

.download-brand h3 {
  margin: 5px 0;
  font-size: 24px;
}

.download-brand p {
  margin: 0;
  color: #7a8f9f;
  font-size: 13px;
}

.faq {
  padding-block: 112px;
}

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

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  position: relative;
  padding: 25px 52px 25px 2px;
  list-style: none;
  cursor: pointer;
  font-size: 17px;
  font-weight: 800;
}

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

.faq summary::after {
  content: "+";
  position: absolute;
  top: 21px;
  right: 8px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #edf7fd;
  color: var(--blue);
  transition: transform .2s ease;
}

.faq details[open] summary::after {
  transform: rotate(45deg);
}

.faq details p {
  max-width: 850px;
  margin: -5px 0 25px;
  color: #6f8495;
  font-size: 14px;
  line-height: 1.8;
}

.faq code {
  padding: 3px 7px;
  border-radius: 6px;
  background: #eef5f8;
  word-break: break-all;
}

.final-cta {
  min-height: 440px;
  margin-bottom: 100px;
  padding: 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 38px;
  color: #fff;
  text-align: center;
  background:
    radial-gradient(circle at 10% 0, rgba(47, 207, 163, .34), transparent 33%),
    radial-gradient(circle at 90% 100%, rgba(39, 156, 240, .34), transparent 35%),
    #163349;
  overflow: hidden;
}

.final-cta > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.final-cta img {
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 14px 35px rgba(0, 0, 0, .2);
}

.final-cta h2 {
  margin: 23px 0 28px;
  font-size: clamp(38px, 5vw, 60px);
  line-height: 1.15;
  letter-spacing: -.055em;
}

.button-light {
  background: #fff;
  color: var(--ink);
}

.button-light:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 35px rgba(0, 0, 0, .16);
}

footer {
  border-top: 1px solid #e2ebf1;
  background: #f8fbfd;
}

.footer-inner {
  min-height: 108px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-inner div {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.footer-inner span,
.footer-inner p {
  margin: 0;
  color: #7b8e9c;
  font-size: 12px;
}

.mobile-download-bar {
  display: none;
}

.toast {
  position: fixed;
  z-index: 20;
  left: 50%;
  bottom: 24px;
  max-width: min(90vw, 420px);
  padding: 13px 18px;
  border-radius: 12px;
  background: #163349;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 18px);
  transition: opacity .22s ease, transform .22s ease;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 62px;
    text-align: center;
  }

  .hero-copy {
    margin-inline: auto;
  }

  .eyebrow,
  .hero-actions,
  .release-meta,
  .safe-row {
    margin-inline: auto;
    justify-content: center;
  }

  .hero-description {
    margin-inline: auto;
  }

  .hero-visual {
    margin-top: 10px;
  }

  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }

  .feature-card-large,
  .feature-card-wide {
    grid-column: span 2;
  }

  .workflow-inner {
    grid-template-columns: 1fr;
    gap: 25px;
  }
}

@media (max-width: 660px) {
  :root {
    --radius: 22px;
  }

  body {
    padding-bottom: calc(78px + env(safe-area-inset-bottom));
  }

  .section-shell,
  .site-header {
    width: min(100% - 28px, 1180px);
  }

  .site-header {
    min-height: 66px;
  }

  .brand {
    font-size: 16px;
  }

  .brand img {
    width: 36px;
    height: 36px;
  }

  .nav-links,
  .header-download {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-block: 48px 65px;
    gap: 35px;
  }

  .eyebrow {
    font-size: 11px;
  }

  h1 {
    margin-top: 20px;
    font-size: clamp(45px, 14vw, 62px);
  }

  .hero-description {
    font-size: 15px;
    line-height: 1.8;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .release-meta {
    gap: 8px;
    font-size: 11px;
  }

  .safe-row {
    gap: 11px 16px;
  }

  .hero-visual {
    min-height: 500px;
  }

  .orbit-one {
    width: 390px;
    height: 390px;
  }

  .orbit-two {
    width: 310px;
    height: 310px;
  }

  .phone {
    width: 235px;
    height: 474px;
    border-width: 5px;
    border-radius: 37px;
  }

  .phone-screen {
    border-radius: 25px;
  }

  .chip-access {
    top: 62px;
    left: -5px;
  }

  .chip-cloud {
    top: 141px;
    right: -5px;
  }

  .version-card {
    right: -6px;
    bottom: 33px;
    width: 145px;
    padding: 14px;
  }

  .version-card strong {
    font-size: 21px;
  }

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

  .trust-grid > div {
    min-height: 92px;
    border-bottom: 1px solid #e4eef4;
  }

  .trust-grid > div:first-child {
    border-left: 0;
  }

  .trust-grid > div:nth-child(even) {
    border-right: 0;
  }

  .features,
  .faq {
    padding-block: 82px;
  }

  .section-heading {
    margin-bottom: 38px;
  }

  .section-heading h2 {
    font-size: 38px;
  }

  .section-heading p {
    font-size: 14px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature-card,
  .feature-card-large,
  .feature-card-wide {
    min-height: 270px;
    grid-column: auto;
  }

  .feature-card-large {
    display: grid;
  }

  .task-pills {
    grid-template-columns: 1fr 1fr;
  }

  .feature-card-wide {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .wide-copy {
    grid-template-columns: 54px 1fr;
  }

  .workflow {
    padding-block: 80px;
  }

  .download-panel {
    padding: 24px;
    flex-direction: column;
    align-items: stretch;
  }

  .download-brand img {
    width: 62px;
    height: 62px;
  }

  .download-brand h3 {
    font-size: 20px;
  }

  .final-cta {
    min-height: 390px;
    margin-bottom: 65px;
    padding: 38px 24px;
    border-radius: 28px;
  }

  .final-cta h2 {
    font-size: 39px;
  }

  .footer-inner {
    padding-block: 25px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }

  .mobile-download-bar {
    position: fixed;
    z-index: 15;
    right: 0;
    bottom: 0;
    left: 0;
    padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border-top: 1px solid rgba(208, 225, 234, .9);
    background: rgba(255, 255, 255, .94);
    box-shadow: 0 -10px 30px rgba(37, 75, 100, .1);
    backdrop-filter: blur(18px);
  }

  .mobile-download-bar > div {
    min-width: 0;
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .mobile-download-bar img {
    border-radius: 12px;
  }

  .mobile-download-bar span {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
  }

  .mobile-download-bar strong {
    font-size: 14px;
  }

  .mobile-download-bar small {
    color: #7b91a1;
    font-size: 10px;
  }

  .mobile-download-bar > a {
    flex: 0 0 auto;
    padding: 11px 16px;
    border-radius: 12px;
    background: var(--blue);
    color: #fff;
    font-size: 13px;
    font-weight: 800;
  }

  .toast {
    bottom: calc(92px + env(safe-area-inset-bottom));
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}