:root {
  --ink: #f7f9ff;
  --muted: #9aa8c2;
  --line: rgba(151, 171, 207, 0.15);
  --panel: rgba(17, 28, 48, 0.78);
  --blue: #4f8cff;
  --cyan: #6de0ff;
  --deep: #050914;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--deep);
  color: var(--ink);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

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

main {
  overflow: hidden;
  min-height: 100vh;
  background:
    radial-gradient(circle at 76% 8%, rgba(47, 101, 214, 0.15), transparent 28%),
    radial-gradient(circle at 11% 46%, rgba(50, 83, 148, 0.1), transparent 26%),
    #050914;
}

.site-header {
  position: relative;
  z-index: 30;
  width: min(1180px, calc(100% - 48px));
  height: 86px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand,
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand img,
.footer-brand img {
  border-radius: 13px;
}

.brand span {
  font-size: 21px;
  letter-spacing: 0.28em;
  font-weight: 680;
}

nav {
  display: flex;
  align-items: center;
  gap: 34px;
  color: #aebbd0;
  font-size: 14px;
}

nav a,
.footer-links a {
  transition: color 180ms ease;
}

nav a:hover,
.footer-links a:hover {
  color: white;
}

.header-action {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 17px;
  border: 1px solid rgba(141, 171, 225, 0.22);
  border-radius: 999px;
  background: rgba(25, 39, 67, 0.55);
  font-size: 13px;
  transition: transform 180ms ease, border-color 180ms ease;
}

.header-action:hover,
.text-button:hover {
  transform: translateY(-2px);
  border-color: rgba(122, 167, 255, 0.55);
}

.hero {
  isolation: isolate;
  position: relative;
  width: min(1180px, calc(100% - 48px));
  min-height: 720px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  align-items: center;
  gap: 36px;
}

.hero-copy {
  position: relative;
  z-index: 3;
  padding-bottom: 28px;
}

.eyebrow,
.section-kicker,
.section-heading > p {
  color: #8faeff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(76, 128, 231, 0.09);
  border: 1px solid rgba(98, 148, 245, 0.15);
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #73a5ff;
  box-shadow: 0 0 0 5px rgba(73, 133, 255, 0.12), 0 0 18px #4d8aff;
}

.hero h1 {
  max-width: 560px;
  margin: 25px 0 22px;
  font-size: clamp(52px, 5vw, 78px);
  line-height: 1.08;
  letter-spacing: -0.055em;
  font-weight: 720;
}

.hero h1 span {
  display: block;
  color: transparent;
  background: linear-gradient(92deg, #ffffff 0%, #a9c3ff 46%, #5d96ff 100%);
  background-clip: text;
  -webkit-background-clip: text;
}

.hero-lead {
  max-width: 530px;
  margin: 0;
  color: #9cabc3;
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 34px;
}

.primary-button,
.secondary-button,
.text-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border-radius: 14px;
  font-weight: 650;
}

.secondary-button {
  min-height: 58px;
  padding: 0 20px 0 10px;
  color: #dce7f8;
  border: 1px solid rgba(140, 170, 220, 0.24);
  background: rgba(16, 29, 51, 0.78);
}

.disabled-button {
  cursor: default;
  color: #8495ae;
}

.button-symbol-ios {
  color: #d6e3f8;
  background: #24334a;
}

.hero-web-link {
  display: inline-flex;
  gap: 9px;
  margin-top: 17px;
  color: #91a5c3;
  font-size: 13px;
  font-weight: 620;
  transition: color 180ms ease;
}

.hero-web-link:hover { color: #c7d8ef; }

.primary-button {
  min-height: 58px;
  padding: 0 20px 0 10px;
  background: linear-gradient(135deg, #edf4ff 0%, #b9d2ff 100%);
  color: #07101e;
  box-shadow: 0 18px 50px rgba(62, 116, 226, 0.22);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.primary-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 65px rgba(62, 116, 226, 0.35);
}

.button-symbol {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  color: white;
  background: #0d1727;
  font-weight: 800;
}

.text-button {
  min-height: 52px;
  color: #b6c4d9;
  border-bottom: 1px solid transparent;
  border-radius: 0;
  transition: transform 180ms ease, color 180ms ease;
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 28px;
  color: #687992;
  font-size: 12px;
}

.hero-notes span::before {
  content: "✓";
  margin-right: 6px;
  color: #6d9cff;
}

.hero-product {
  position: relative;
  min-height: 630px;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  pointer-events: none;
}

.hero-glow-one {
  z-index: -1;
  right: -130px;
  top: 35px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(76, 129, 234, 0.18), transparent 65%);
}

.hero-glow-two {
  z-index: -1;
  left: -260px;
  bottom: -240px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(35, 98, 218, 0.1), transparent 68%);
}

.orbit {
  position: absolute;
  border: 1px solid rgba(111, 151, 226, 0.12);
  border-radius: 50%;
}

.orbit-one {
  width: 540px;
  height: 540px;
  right: 6px;
  top: 45px;
}

.orbit-two {
  width: 400px;
  height: 400px;
  right: 75px;
  top: 115px;
  border-style: dashed;
}

.phone {
  position: absolute;
  padding: 8px;
  border-radius: 42px;
  background: linear-gradient(145deg, #263450, #08101f 52%, #23304a);
  box-shadow: 0 36px 80px rgba(0, 0, 0, 0.55), inset 0 0 0 1px rgba(255,255,255,0.18);
}

.phone::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 34px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08);
  pointer-events: none;
}

.phone-main {
  z-index: 4;
  width: 290px;
  height: 590px;
  right: 205px;
  top: 22px;
  transform: rotate(-4deg);
}

.phone-secondary {
  z-index: 2;
  width: 235px;
  height: 480px;
  right: 14px;
  top: 95px;
  transform: rotate(6deg);
  opacity: 0.9;
}

.phone-screen {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 34px;
  background: #081020;
}

.phone-screen img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: 5% center;
}

.phone-screen.login-screen img {
  object-position: 83% center;
}

.phone-speaker {
  position: absolute;
  z-index: 5;
  left: 50%;
  top: 17px;
  width: 70px;
  height: 20px;
  transform: translateX(-50%);
  border-radius: 99px;
  background: #040812;
}

.floating-card {
  position: absolute;
  z-index: 8;
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 210px;
  padding: 12px 14px;
  border: 1px solid rgba(153, 184, 238, 0.2);
  border-radius: 17px;
  background: rgba(16, 27, 47, 0.8);
  box-shadow: 0 18px 48px rgba(0,0,0,0.35);
  backdrop-filter: blur(18px);
}

.floating-card strong,
.floating-card small {
  display: block;
}

.floating-card strong {
  font-size: 12px;
}

.floating-card small {
  margin-top: 4px;
  color: #7990af;
  font-size: 10px;
}

.floating-card img {
  border-radius: 11px;
}

.floating-call {
  right: 8px;
  top: 57px;
}

.floating-message {
  left: -18px;
  bottom: 60px;
}

.float-icon {
  display: grid;
  place-items: center;
  width: 37px;
  height: 37px;
  border-radius: 12px;
  color: #a7c5ff;
  background: rgba(71, 124, 227, 0.2);
}

.signal-bars {
  margin-left: auto;
  color: #65a0ff;
  letter-spacing: 1px;
}

.message-dot {
  display: grid;
  place-items: center;
  width: 19px;
  height: 19px;
  margin-left: auto;
  border-radius: 50%;
  color: white;
  background: #4f8dff;
  font-size: 10px;
}

.trust-strip {
  width: min(1180px, calc(100% - 48px));
  margin: 6px auto 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.trust-strip > div {
  padding: 25px 26px;
  border-right: 1px solid var(--line);
}

.trust-strip > div:last-child {
  border-right: 0;
}

.trust-strip strong,
.trust-strip span {
  display: block;
}

.trust-strip strong {
  margin-bottom: 5px;
  font-size: 17px;
}

.trust-strip span {
  color: #75869f;
  font-size: 12px;
}

.feature-section,
.security-section,
.download-section {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.feature-section {
  padding: 138px 0 120px;
}

.section-heading {
  text-align: center;
  margin-bottom: 56px;
}

.section-heading > p,
.section-kicker {
  margin: 0 0 14px;
}

.section-heading h2,
.security-copy h2,
.download-top h2 {
  margin: 0;
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1.16;
  letter-spacing: -0.045em;
}

.section-heading > span {
  display: block;
  margin-top: 16px;
  color: var(--muted);
  font-size: 16px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.feature-card {
  position: relative;
  min-height: 385px;
  padding: 24px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(160deg, rgba(22,35,59,0.82), rgba(8,15,28,0.88));
  transition: transform 220ms ease, border-color 220ms ease;
}

.feature-card:hover {
  transform: translateY(-7px);
  border-color: rgba(109, 151, 229, 0.34);
}

.feature-number {
  color: #697b99;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.feature-visual {
  position: relative;
  height: 150px;
  margin: 28px 0 26px;
  border-radius: 18px;
  background: radial-gradient(circle at 50% 50%, rgba(93, 146, 250, 0.2), transparent 55%);
}

.feature-visual::before,
.feature-visual::after,
.feature-visual span {
  content: "";
  position: absolute;
  border-radius: 13px;
  border: 1px solid rgba(154, 183, 239, 0.18);
  background: rgba(79, 120, 201, 0.13);
}

.feature-visual::before {
  width: 66px;
  height: 66px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(45deg);
}

.feature-visual::after {
  width: 35px;
  height: 35px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: rgba(121, 165, 255, 0.28);
  box-shadow: 0 0 35px rgba(73, 134, 255, 0.45);
}

.feature-visual span:nth-child(1) { width: 28px; height: 28px; left: 20%; top: 25%; }
.feature-visual span:nth-child(2) { width: 18px; height: 18px; right: 18%; top: 20%; border-radius: 50%; }
.feature-visual span:nth-child(3) { width: 23px; height: 23px; right: 22%; bottom: 16%; transform: rotate(30deg); }

.feature-card.violet .feature-visual { background: radial-gradient(circle, rgba(141, 105, 246, 0.19), transparent 56%); }
.feature-card.cyan .feature-visual { background: radial-gradient(circle, rgba(76, 206, 238, 0.17), transparent 56%); }
.feature-card.mint .feature-visual { background: radial-gradient(circle, rgba(80, 218, 178, 0.14), transparent 56%); }

.feature-card h3 {
  margin: 0 0 12px;
  font-size: 19px;
}

.feature-card p {
  margin: 0;
  color: #8595ae;
  font-size: 13px;
  line-height: 1.75;
}

.security-section {
  display: grid;
  grid-template-columns: 1fr 0.86fr;
  align-items: center;
  gap: 90px;
  padding: 80px 70px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background: linear-gradient(135deg, rgba(13, 24, 43, 0.95), rgba(8, 14, 27, 0.93));
}

.security-copy > p:not(.section-kicker) {
  max-width: 580px;
  margin: 23px 0 0;
  color: #8d9eb7;
  font-size: 16px;
  line-height: 1.85;
}

.security-copy ul {
  margin: 31px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 15px;
  color: #b7c3d5;
  font-size: 14px;
}

.security-copy li span {
  display: inline-grid;
  place-items: center;
  width: 20px;
  height: 20px;
  margin-right: 10px;
  border-radius: 50%;
  color: #a8c4ff;
  background: rgba(82, 134, 236, 0.16);
}

.security-panel {
  position: relative;
  min-height: 390px;
  padding: 30px;
  border: 1px solid rgba(150, 179, 231, 0.18);
  border-radius: 26px;
  background: rgba(16, 28, 48, 0.75);
  box-shadow: 0 30px 70px rgba(0,0,0,0.27);
}

.shield-mark {
  display: grid;
  place-items: center;
  width: 70px;
  height: 78px;
  margin-bottom: 25px;
  clip-path: polygon(50% 0, 92% 17%, 86% 68%, 50% 100%, 14% 68%, 8% 17%);
  color: #ecf4ff;
  background: linear-gradient(150deg, #5e94f9, #173866);
  font-size: 28px;
  font-weight: 800;
}

.secure-state {
  position: absolute;
  right: 28px;
  top: 29px;
  display: flex;
  align-items: center;
  gap: 7px;
  color: #89c8b4;
  font-size: 11px;
}

.secure-state i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #58cda8;
  box-shadow: 0 0 12px #58cda8;
}

.security-panel h3 {
  max-width: 340px;
  margin: 0;
  font-size: 24px;
  line-height: 1.45;
}

.security-lines {
  display: grid;
  gap: 9px;
  margin: 25px 0;
}

.security-lines span {
  height: 5px;
  border-radius: 99px;
  background: rgba(128, 153, 194, 0.12);
}

.security-lines span:nth-child(1) { width: 92%; }
.security-lines span:nth-child(2) { width: 74%; }
.security-lines span:nth-child(3) { width: 57%; }

.security-metric {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.security-metric > div {
  padding: 16px;
  border-radius: 15px;
  background: rgba(84, 121, 189, 0.08);
}

.security-metric strong,
.security-metric small {
  display: block;
}

.security-metric strong { font-size: 20px; }
.security-metric small { margin-top: 4px; color: #71829c; }

.download-section {
  padding: 140px 0 80px;
}

.download-top {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 48px;
}

.download-top > p {
  max-width: 430px;
  margin: 0;
  color: #8797ae;
  font-size: 14px;
  line-height: 1.8;
}

.platform-list {
  display: grid;
  gap: 12px;
}

.platform-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  min-height: 104px;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(15, 25, 43, 0.72);
  transition: border-color 180ms ease, background 180ms ease;
}

.platform-card:hover {
  border-color: rgba(116, 158, 238, 0.35);
  background: rgba(19, 32, 54, 0.9);
}

.platform-mark {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 17px;
  color: #dce9ff;
  background: linear-gradient(145deg, rgba(73, 123, 218, 0.28), rgba(42, 72, 127, 0.12));
  border: 1px solid rgba(129, 164, 228, 0.16);
  font-size: 20px;
  font-weight: 720;
}

.platform-copy h3,
.platform-copy p {
  margin: 0;
}

.platform-copy h3 { font-size: 17px; }
.platform-copy p { margin-top: 7px; color: #7788a2; font-size: 12px; }

.platform-action {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 130px;
  justify-content: center;
  padding: 12px 16px;
  border-radius: 12px;
  color: #07101e;
  background: #dce9ff;
  font-size: 12px;
  font-weight: 700;
}

.platform-action-disabled {
  color: #70819a;
  background: rgba(95, 119, 157, 0.09);
  border: 1px solid rgba(128, 151, 187, 0.12);
}

.install-tip {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  margin-top: 24px;
  padding: 22px 24px;
  border-radius: 22px;
  color: #101828;
  background: linear-gradient(110deg, #eef4ff, #bed4ff);
}

.install-tip img { border-radius: 16px; box-shadow: 0 10px 28px rgba(43, 78, 139, 0.18); }
.install-tip strong { display: block; font-size: 16px; }
.install-tip p { margin: 6px 0 0; color: #52637d; font-size: 12px; }
.install-tip > a { display: inline-flex; gap: 12px; font-size: 13px; font-weight: 720; }

footer {
  width: min(1180px, calc(100% - 48px));
  min-height: 120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 30px;
  border-top: 1px solid var(--line);
  color: #72829b;
  font-size: 11px;
}

.footer-brand strong,
.footer-brand small {
  display: block;
}

.footer-brand strong { color: #c8d3e4; letter-spacing: .18em; }
.footer-brand small { margin-top: 3px; font-size: 7px; letter-spacing: .14em; }

footer > p { margin: 0; text-align: center; }

.footer-links {
  display: flex;
  justify-content: flex-end;
  gap: 18px;
}

@media (max-width: 980px) {
  nav { display: none; }
  .hero { grid-template-columns: 1fr; padding: 80px 0 40px; }
  .hero-copy { text-align: center; }
  .hero h1, .hero-lead { margin-left: auto; margin-right: auto; }
  .hero-actions, .hero-notes { justify-content: center; }
  .hero-product { width: min(650px, 100%); margin: 0 auto; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .security-section { grid-template-columns: 1fr; gap: 50px; }
  footer { grid-template-columns: 1fr 1fr; }
  footer > p { display: none; }
}

@media (max-width: 680px) {
  .site-header,
  .hero,
  .trust-strip,
  .feature-section,
  .security-section,
  .download-section,
  footer {
    width: min(100% - 32px, 1180px);
  }

  .site-header { height: 72px; }
  .brand img { width: 38px; height: 38px; }
  .brand span { font-size: 18px; }
  .header-action { padding: 10px 13px; font-size: 11px; }

  .hero { min-height: auto; padding-top: 64px; }
  .hero h1 { margin-top: 20px; font-size: 46px; }
  .hero-lead { font-size: 15px; line-height: 1.75; }
  .hero-actions { flex-direction: column; gap: 8px; }
  .primary-button, .secondary-button { width: min(100%, 330px); }
  .hero-notes { gap: 10px 16px; font-size: 10px; }

  .hero-product { min-height: 500px; margin-top: 22px; transform: scale(.92); }
  .orbit-one { width: 420px; height: 420px; right: -45px; }
  .orbit-two { width: 320px; height: 320px; right: 5px; }
  .phone-main { width: 230px; height: 470px; right: 44%; transform: translateX(50%) rotate(-4deg); }
  .phone-secondary { width: 178px; height: 365px; right: -20px; top: 78px; }
  .floating-call { right: -14px; top: 20px; min-width: 170px; }
  .floating-message { left: -14px; bottom: 25px; min-width: 175px; }

  .trust-strip { grid-template-columns: 1fr 1fr; }
  .trust-strip > div:nth-child(2) { border-right: 0; }
  .trust-strip > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .trust-strip > div { padding: 20px 17px; }

  .feature-section { padding: 100px 0 90px; }
  .section-heading h2, .security-copy h2, .download-top h2 { font-size: 36px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 330px; }
  .feature-visual { height: 120px; }

  .security-section { padding: 48px 22px; border-radius: 26px; }
  .security-panel { padding: 24px; }
  .secure-state { right: 22px; top: 25px; }

  .download-section { padding-top: 100px; }
  .download-top { align-items: start; flex-direction: column; gap: 18px; }
  .platform-card { grid-template-columns: auto 1fr; }
  .platform-action { grid-column: 1 / -1; width: 100%; }
  .install-tip { grid-template-columns: auto 1fr; }
  .install-tip > a { grid-column: 1 / -1; justify-content: center; padding-top: 12px; border-top: 1px solid rgba(24, 51, 95, .12); }

  footer { grid-template-columns: 1fr; padding: 34px 0; }
  .footer-links { justify-content: flex-start; flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}