:root {
  --ink: #10223b;
  --muted: #667085;
  --line: #e5e9ef;
  --paper: #ffffff;
  --mist: #f5f7f8;
  --green: #207a55;
  --green-dark: #14583e;
  --blue: #4f61f6;
  --coral: #ff8058;
  --shadow: 0 18px 45px rgba(16, 34, 59, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--mist);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    sans-serif;
}

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

.site-header {
  position: fixed;
  z-index: 10;
  top: 16px;
  left: 50%;
  display: flex;
  width: min(1120px, calc(100% - 32px));
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 12px 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.36);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 28px rgba(16, 34, 59, 0.1);
  backdrop-filter: blur(16px);
  transform: translateX(-50%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 800;
}

.brand-mark {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--green);
  font-size: 13px;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  color: #344054;
  font-size: 15px;
  font-weight: 700;
}

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

.nav-cta,
.primary-button,
.secondary-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-weight: 800;
}

.nav-cta {
  padding: 0 18px;
  color: #fff;
  background: var(--green);
}

.hero {
  position: relative;
  display: flex;
  min-height: 92vh;
  align-items: center;
  overflow: hidden;
  padding: 150px max(32px, calc((100vw - 1120px) / 2)) 110px;
  color: #fff;
  background: #0d1724;
}

.hero-scene {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(13, 23, 36, 0.96) 0%, rgba(13, 23, 36, 0.76) 44%, rgba(13, 23, 36, 0.35) 100%),
    #eff5f0;
}

.scene-video,
.scene-card,
.scene-controls {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.46);
  border-radius: 8px;
  box-shadow: 0 28px 70px rgba(7, 16, 29, 0.26);
}

.scene-video {
  top: 12%;
  right: max(30px, calc((100vw - 1120px) / 2));
  width: min(46vw, 570px);
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(255, 128, 88, 0.88), rgba(255, 128, 88, 0.1) 34%, transparent 35%),
    linear-gradient(160deg, #d9f1ea 0%, #f7fbff 38%, #d7e3ef 100%);
}

.scene-video::before {
  position: absolute;
  inset: 14% 9% auto auto;
  width: 36%;
  height: 42%;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(16, 34, 59, 0.12), transparent),
    #ffffff;
  content: "";
}

.scene-video::after {
  position: absolute;
  right: 15%;
  bottom: 14%;
  width: 54%;
  height: 20%;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.6), transparent),
    rgba(16, 34, 59, 0.12);
  content: "";
}

.scene-label {
  position: absolute;
  top: 22px;
  left: 22px;
  padding: 9px 13px;
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  font-size: 14px;
  font-weight: 900;
}

.scene-play {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 72px;
  height: 72px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: rgba(16, 34, 59, 0.72);
  transform: translate(-50%, -50%);
}

.scene-card {
  right: max(44px, calc((100vw - 1120px) / 2 + 42px));
  width: min(40vw, 500px);
  padding: 26px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
}

.scene-card-main {
  top: 48%;
}

.scene-card-next {
  top: 72%;
  opacity: 0.55;
}

.scene-card p {
  margin: 0;
  font-size: 30px;
  font-weight: 900;
  line-height: 1.28;
}

.scene-card p + p {
  margin-top: 12px;
}

.scene-card strong,
.scene-card span {
  color: var(--blue);
}

.scene-card .scene-muted {
  color: #6b7280;
  font-size: 21px;
}

.scene-actions {
  display: flex;
  gap: 18px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid #e8ecf2;
}

.scene-actions i {
  width: 24px;
  height: 24px;
  border: 2px solid #98a2b3;
  border-radius: 7px;
}

.scene-controls {
  right: max(30px, calc((100vw - 1120px) / 2));
  bottom: 6%;
  display: grid;
  width: min(46vw, 570px);
  grid-template-columns: auto auto 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 20px 24px;
  color: #667085;
  background: rgba(255, 255, 255, 0.92);
  font-weight: 900;
}

.scene-controls b {
  height: 5px;
  border-radius: 999px;
  background:
    linear-gradient(90deg, var(--blue) 0 38%, #e8ecf2 38% 100%);
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 16, 29, 0.28), rgba(7, 16, 29, 0.08)),
    linear-gradient(180deg, rgba(7, 16, 29, 0) 0%, rgba(7, 16, 29, 0.74) 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(650px, 100%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--coral);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(60px, 10vw, 132px);
  line-height: 0.9;
  letter-spacing: 0;
}

.hero-copy {
  width: min(590px, 100%);
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(21px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.25;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.primary-button {
  padding: 0 24px;
  color: #fff;
  background: var(--green);
  box-shadow: 0 14px 30px rgba(32, 122, 85, 0.24);
}

.primary-button:hover,
.nav-cta:hover {
  background: var(--green-dark);
}

.secondary-button {
  padding: 0 22px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.intro-band {
  display: grid;
  width: min(1120px, calc(100% - 32px));
  grid-template-columns: 1fr 1.2fr;
  gap: 28px;
  align-items: center;
  margin: -58px auto 0;
  padding: 22px;
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.intro-copy {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.intro-copy span {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #344054;
  background: #f9fafb;
  font-size: 14px;
  font-weight: 800;
}

.player-strip {
  display: grid;
  grid-template-columns: auto 1fr auto auto auto auto;
  gap: 14px;
  align-items: center;
  color: #667085;
  font-weight: 800;
}

.strip-track {
  height: 4px;
  overflow: hidden;
  border-radius: 999px;
  background: #e8ecf2;
}

.strip-track i {
  display: block;
  width: 42%;
  height: 100%;
  background: var(--blue);
}

.player-strip button {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 0;
  border-radius: 50%;
  color: #334155;
  background: #eef2f7;
  font: inherit;
  cursor: pointer;
}

.player-strip .play-dot {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 10px 24px rgba(79, 97, 246, 0.3);
}

.section {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 108px 0 0;
}

.section-heading {
  width: min(680px, 100%);
}

.section-heading h2,
.privacy-band h2,
.download-section h2 {
  margin: 0;
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.05;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow),
.download-section p,
.privacy-band p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 38px;
}

.feature-card {
  min-height: 230px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  color: #fff;
  background: var(--ink);
  font-weight: 900;
}

.feature-card h3 {
  margin: 28px 0 10px;
  font-size: 22px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.process-section {
  display: grid;
  grid-template-columns: 0.8fr 1fr;
  gap: 48px;
  align-items: start;
}

.process-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.process-list li {
  position: relative;
  min-height: 94px;
  padding: 20px 20px 20px 76px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  counter-increment: step;
}

.process-list li::before {
  position: absolute;
  top: 22px;
  left: 20px;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--green);
  content: counter(step);
  font-weight: 900;
}

.process-list strong {
  display: block;
  margin-bottom: 6px;
  font-size: 18px;
}

.process-list span {
  color: var(--muted);
  line-height: 1.7;
}

.privacy-band {
  display: grid;
  width: min(1120px, calc(100% - 32px));
  grid-template-columns: 0.8fr 1.2fr;
  gap: 40px;
  align-items: center;
  margin: 108px auto 0;
  padding: 52px;
  border-radius: 8px;
  color: #fff;
  background: #10223b;
}

.privacy-band p {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
}

.download-section {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 112px 0 104px;
  text-align: center;
}

.download-section .primary-button {
  margin-top: 18px;
}

.footer {
  display: flex;
  width: min(1120px, calc(100% - 32px));
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin: 0 auto;
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.icp-link {
  color: inherit;
  text-decoration: none;
}

.icp-link:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 860px) {
  .site-header {
    top: 10px;
    width: calc(100% - 20px);
  }

  .nav-links {
    display: none;
  }

  .nav-cta {
    min-height: 38px;
    padding: 0 12px;
    font-size: 13px;
  }

  .hero {
    min-height: 88vh;
    padding: 118px 20px 88px;
  }

  .hero-shade {
    background:
      linear-gradient(90deg, rgba(7, 16, 29, 0.7), rgba(7, 16, 29, 0.34)),
      linear-gradient(180deg, rgba(7, 16, 29, 0.14), rgba(7, 16, 29, 0.88));
  }

  .hero-scene {
    opacity: 0.62;
  }

  .scene-video {
    top: 12%;
    right: -130px;
    width: 620px;
  }

  .scene-card {
    right: -88px;
    width: 430px;
    padding: 20px;
  }

  .scene-card p {
    font-size: 23px;
  }

  .scene-card .scene-muted {
    font-size: 17px;
  }

  .scene-controls {
    right: -110px;
    width: 500px;
  }

  .hero-actions,
  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .intro-band,
  .process-section,
  .privacy-band {
    grid-template-columns: 1fr;
  }

  .intro-band {
    margin-top: -42px;
    padding: 16px;
  }

  .intro-copy {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .player-strip {
    grid-template-columns: auto 1fr auto;
  }

  .player-strip button {
    display: none;
  }

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

  .feature-card {
    min-height: auto;
  }

  .section {
    padding-top: 86px;
  }

  .privacy-band {
    margin-top: 86px;
    padding: 30px;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}