:root {
  color-scheme: dark;
  --bg: #07090d;
  --panel: #10141d;
  --panel-strong: #161c28;
  --text: #f5f7fb;
  --muted: #aab3c2;
  --line: rgba(255, 255, 255, 0.12);
  --primary: #62d6ff;
  --accent: #8ef7c0;
  --warning: #ffd166;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 20% 0%, rgba(98, 214, 255, 0.18), transparent 32rem),
    radial-gradient(circle at 82% 12%, rgba(142, 247, 192, 0.14), transparent 30rem),
    linear-gradient(180deg, #07090d 0%, #0c1119 46%, #07090d 100%);
  color: var(--text);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 9, 13, 0.78);
  backdrop-filter: blur(18px);
}

.nav {
  width: min(1160px, calc(100% - 32px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  display: grid;
  place-items: center;
  background:
    linear-gradient(145deg, rgba(98, 214, 255, 0.3), rgba(142, 247, 192, 0.12)),
    #10141d;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.brand-mark span {
  width: 18px;
  height: 18px;
  border-radius: 7px;
  border: 2px solid var(--accent);
  border-top-color: var(--primary);
  transform: rotate(12deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a,
.lang-button {
  min-height: 38px;
  border-radius: 999px;
  padding: 8px 13px;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  white-space: nowrap;
}

.nav-links a:hover,
.lang-button:hover,
.lang-button[aria-pressed="true"] {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.language-switcher {
  display: inline-flex;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
}

.lang-button {
  border: 0;
  cursor: pointer;
  background: transparent;
}

.hero,
.section,
.page-hero {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  min-height: calc(100svh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
  align-items: center;
  gap: 52px;
  padding: 72px 0 48px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 22px;
  font-size: clamp(46px, 8vw, 104px);
  line-height: 0.92;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.58;
}

.hero-actions,
.inline-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 32px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-weight: 700;
}

.button.primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #061016;
}

.button:hover {
  transform: translateY(-1px);
}

.hero-showcase {
  position: relative;
  min-height: 560px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-frame {
  width: min(360px, 82vw);
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 46px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
}

.phone-frame img {
  border-radius: 36px;
}

.hero-stat {
  position: absolute;
  left: 0;
  bottom: 70px;
  width: min(250px, 48vw);
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(16, 20, 29, 0.86);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-stat strong {
  display: block;
  margin-bottom: 6px;
  font-size: 28px;
}

.hero-stat span,
.muted {
  color: var(--muted);
}

.section {
  padding: 82px 0;
}

.section-header {
  max-width: 720px;
  margin-bottom: 34px;
}

.grid {
  display: grid;
  gap: 18px;
}

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

.card,
.policy-block,
.support-block {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.055);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.16);
}

.card {
  padding: 24px;
}

.card-icon {
  width: 42px;
  height: 42px;
  margin-bottom: 22px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(98, 214, 255, 0.15);
  color: var(--primary);
}

.card p,
.support-block p,
.policy-block p,
.policy-block li,
.support-block li {
  color: var(--muted);
  line-height: 1.7;
}

.showcase-stack {
  display: grid;
  gap: 24px;
}

.showcase-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.68fr);
  gap: 34px;
  align-items: center;
  min-height: 540px;
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(98, 214, 255, 0.1), rgba(142, 247, 192, 0.045)),
    rgba(255, 255, 255, 0.045);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.2);
  overflow: hidden;
}

.showcase-row.reverse {
  grid-template-columns: minmax(280px, 0.68fr) minmax(0, 1fr);
}

.showcase-row.reverse .showcase-copy {
  order: 2;
}

.showcase-row.reverse .showcase-media {
  order: 1;
}

.showcase-copy {
  max-width: 560px;
}

.showcase-kicker {
  display: inline-flex;
  margin-bottom: 18px;
  border: 1px solid rgba(98, 214, 255, 0.32);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--accent);
  background: rgba(98, 214, 255, 0.08);
  font-size: 13px;
  font-weight: 800;
}

.showcase-copy h3 {
  margin-bottom: 18px;
  font-size: clamp(28px, 4vw, 52px);
  line-height: 1;
}

.showcase-copy p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.showcase-media {
  justify-self: center;
  width: min(310px, 76vw);
  margin: 0;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 36px;
  background: rgba(255, 255, 255, 0.07);
  box-shadow: var(--shadow);
}

.showcase-media img {
  width: 100%;
  border-radius: 28px;
}

.theme-row {
  grid-template-columns: minmax(0, 0.78fr) minmax(360px, 1fr);
}

.dual-phone {
  display: grid;
  grid-template-columns: repeat(2, minmax(150px, 1fr));
  gap: 18px;
  align-items: center;
}

.showcase-media.compact {
  width: min(245px, 100%);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: 40px;
  align-items: start;
}

.steps {
  counter-reset: step;
  display: grid;
  gap: 14px;
}

.step {
  position: relative;
  padding: 22px 22px 22px 70px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.05);
}

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 22px;
  top: 22px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--primary);
  color: #061016;
  font-weight: 800;
}

.page-hero {
  padding: 80px 0 40px;
}

.page-hero h1 {
  font-size: clamp(42px, 6vw, 78px);
}

.content {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 90px;
}

.support-block,
.policy-block {
  padding: 26px;
  margin-bottom: 18px;
}

.policy-block ul,
.support-block ul {
  padding-left: 20px;
}

.contact-box {
  border-color: rgba(98, 214, 255, 0.34);
  background:
    linear-gradient(135deg, rgba(98, 214, 255, 0.12), rgba(142, 247, 192, 0.08)),
    rgba(255, 255, 255, 0.055);
}

.download-section {
  padding-top: 40px;
}

.download-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  border: 1px solid rgba(142, 247, 192, 0.26);
  border-radius: 28px;
  padding: clamp(26px, 5vw, 52px);
  background:
    linear-gradient(135deg, rgba(142, 247, 192, 0.15), rgba(98, 214, 255, 0.08)),
    rgba(255, 255, 255, 0.055);
  box-shadow: var(--shadow);
}

.download-copy h2 {
  max-width: 760px;
}

.app-store-badge {
  min-width: 220px;
  min-height: 72px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 18px;
  padding: 13px 18px;
  background: #05070a;
  color: #ffffff;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.32);
}

.app-store-badge:hover {
  transform: translateY(-1px);
}

.store-icon {
  position: relative;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 10px;
  background: linear-gradient(135deg, #62d6ff, #8ef7c0);
}

.store-icon::before,
.store-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 5px;
  height: 25px;
  border-radius: 999px;
  background: #061016;
  transform-origin: center;
}

.store-icon::before {
  transform: translate(-50%, -50%) rotate(31deg);
}

.store-icon::after {
  transform: translate(-50%, -50%) rotate(-31deg);
}

.app-store-badge small,
.app-store-badge strong {
  display: block;
  line-height: 1.05;
}

.app-store-badge small {
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
}

.app-store-badge strong {
  margin-top: 4px;
  font-size: 25px;
  letter-spacing: 0;
}

.download-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.18);
}

.footer-inner {
  width: min(1160px, calc(100% - 32px));
  min-height: 96px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

@media (max-width: 920px) {
  .nav {
    min-height: 86px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero,
  .split {
    grid-template-columns: 1fr;
  }

  .showcase-row,
  .showcase-row.reverse,
  .theme-row,
  .download-panel {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .showcase-row.reverse .showcase-copy,
  .showcase-row.reverse .showcase-media {
    order: initial;
  }

  .hero {
    padding-top: 52px;
  }

  .hero-showcase {
    min-height: auto;
    padding-bottom: 28px;
  }

  .hero-stat {
    right: 0;
    left: auto;
    bottom: 0;
  }

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

@media (max-width: 620px) {
  .hero,
  .section,
  .page-hero,
  .content,
  .footer-inner,
  .nav {
    width: min(100% - 24px, 1160px);
  }

  .language-switcher {
    min-width: max-content;
  }

  .hero {
    gap: 28px;
  }

  .hero-actions,
  .inline-actions,
  .footer-inner {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .section {
    padding: 58px 0;
  }

  .card,
  .support-block,
  .policy-block,
  .showcase-row {
    border-radius: 16px;
    padding: 20px;
  }

  .dual-phone {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  .app-store-badge {
    width: 100%;
    justify-content: center;
  }
}