:root {
  color-scheme: dark;
  --bg: #0d1116;
  --panel: #141a21;
  --panel-2: #1c242d;
  --line: rgba(255, 255, 255, 0.1);
  --text: #f4f7fb;
  --muted: #aab6c4;
  --soft: #d4dde8;
  --cyan: #4fd3c4;
  --lime: #c8f06b;
  --coral: #ff8a70;
  --violet: #9d8cff;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(79, 211, 196, 0.14), transparent 32rem),
    linear-gradient(180deg, #0d1116 0%, #11171e 48%, #0d1116 100%);
  color: var(--text);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  letter-spacing: 0;
}

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

button,
input {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  overflow: hidden;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: #0b1118;
}

.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.nav-links {
  display: flex;
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
}

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

.header-cta,
.primary-button,
.secondary-button,
.signup-form button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 8px;
  font-weight: 700;
}

.header-cta {
  padding: 0 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(520px, 1.14fr);
  gap: 52px;
  align-items: center;
  width: min(1180px, calc(100% - 40px));
  min-height: calc(100vh - 76px);
  margin: 0 auto;
  padding: 54px 0 78px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 650px;
  margin-bottom: 24px;
  font-size: clamp(44px, 6vw, 78px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.08;
  letter-spacing: 0;
}

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

.hero-text {
  max-width: 640px;
  color: var(--soft);
  font-size: 20px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0 26px;
}

.primary-button {
  padding: 0 22px;
  background: var(--text);
  color: #0d1116;
}

.secondary-button {
  padding: 0 22px;
  border: 1px solid var(--line);
  color: var(--soft);
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-proof span {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
}

.product-shell {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: #10161d;
  box-shadow: var(--shadow);
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

.window-bar span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--coral);
}

.window-bar span:nth-child(2) {
  background: #ffd166;
}

.window-bar span:nth-child(3) {
  background: var(--cyan);
}

.window-bar strong {
  margin-left: 10px;
  font-weight: 700;
}

.app-layout {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  min-height: 520px;
}

.sidebar {
  padding: 18px 12px;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
}

.sidebar-title {
  margin: 0 0 14px 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.sidebar button {
  display: block;
  width: 100%;
  margin-bottom: 8px;
  padding: 11px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  text-align: left;
}

.sidebar .active {
  background: rgba(79, 211, 196, 0.14);
  color: var(--text);
}

.timeline-panel {
  padding: 20px;
}

.preview {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 190px;
  gap: 16px;
}

.video-frame {
  position: relative;
  min-height: 240px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background:
    linear-gradient(120deg, rgba(79, 211, 196, 0.18), transparent 34%),
    linear-gradient(150deg, #263441, #111820 72%);
}

.video-frame::before,
.video-frame::after {
  content: "";
  position: absolute;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
}

.video-frame::before {
  right: 24px;
  bottom: 24px;
  width: 118px;
  height: 82px;
}

.video-frame::after {
  left: 24px;
  top: 26px;
  width: 52%;
  height: 16px;
  box-shadow: 0 28px 0 rgba(255, 255, 255, 0.08), 0 56px 0 rgba(255, 255, 255, 0.06);
}

.speaker-card,
.agent-card,
.insights article,
.workflow-grid article,
.feature-list article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.055);
}

.speaker-card {
  position: absolute;
  left: 20px;
  bottom: 20px;
  padding: 12px 14px;
}

.speaker-card b,
.speaker-card span {
  display: block;
}

.speaker-card span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.agent-card {
  padding: 18px;
  background: linear-gradient(180deg, rgba(200, 240, 107, 0.12), rgba(255, 255, 255, 0.05));
}

.agent-card p {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 13px;
}

.agent-card h3 {
  font-size: 25px;
  line-height: 1.2;
}

.timeline {
  position: relative;
  display: grid;
  gap: 10px;
  margin: 20px 0;
}

.track {
  height: 34px;
  border-radius: 8px;
}

.track.video {
  background: linear-gradient(90deg, var(--cyan) 0 22%, #34414d 22% 30%, var(--cyan) 30% 62%, #34414d 62% 100%);
}

.track.audio {
  background: repeating-linear-gradient(90deg, rgba(200, 240, 107, 0.9) 0 8px, rgba(200, 240, 107, 0.24) 8px 15px);
}

.track.transcript {
  background: linear-gradient(90deg, var(--violet), rgba(157, 140, 255, 0.2));
}

.playhead {
  position: absolute;
  top: -8px;
  left: 46%;
  width: 2px;
  height: calc(100% + 16px);
  background: var(--text);
}

.insights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.insights article {
  padding: 16px;
}

.insights span {
  display: block;
  margin-bottom: 8px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
}

.insights p,
.workflow-grid p,
.feature-list p,
.privacy p,
.section-heading p,
.form-note {
  color: var(--muted);
  line-height: 1.65;
}

.section {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 92px 0;
}

.section-heading {
  max-width: 760px;
  margin: 0 auto 36px;
  text-align: center;
}

.align-left {
  margin: 0;
  text-align: left;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.workflow-grid article,
.feature-list article {
  padding: 22px;
}

.icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  margin-bottom: 28px;
  border-radius: 8px;
  background: rgba(79, 211, 196, 0.14);
  color: var(--cyan);
  font-weight: 800;
}

.demo-band,
.privacy,
.waitlist {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.035));
}

.demo-band {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 28px;
  align-items: center;
  padding: 42px;
}

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

.steps div {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--soft);
}

.steps b {
  display: grid;
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: var(--lime);
  color: #11171e;
}

.split-section {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 70px;
  align-items: start;
}

.feature-list {
  display: grid;
  gap: 14px;
}

.privacy {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 28px;
  padding: 46px;
}

.privacy ul {
  display: grid;
  align-content: center;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.privacy li {
  padding: 16px 18px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--soft);
}

.waitlist {
  margin-top: 92px;
  padding: 58px 24px;
  text-align: center;
}

.signup-form {
  display: flex;
  width: min(520px, 100%);
  margin: 30px auto 12px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.07);
}

.signup-form input {
  min-width: 0;
  flex: 1;
  border: 0;
  outline: 0;
  padding: 0 16px;
  background: transparent;
  color: var(--text);
}

.signup-form input::placeholder {
  color: #7f8b99;
}

.signup-form button {
  border: 0;
  padding: 0 20px;
  background: var(--cyan);
  color: #071014;
  cursor: pointer;
}

.signup-form button:disabled {
  cursor: default;
  opacity: 0.78;
}

.sr-only {
  position: absolute;
  overflow: hidden;
  width: 1px;
  height: 1px;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

footer {
  display: flex;
  justify-content: space-between;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 42px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 980px) {
  .hero,
  .demo-band,
  .split-section,
  .privacy {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 44px;
  }

  .workflow-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .site-header {
    width: min(100% - 28px, 1180px);
  }

  .nav-links {
    display: none;
  }

  .hero,
  .section,
  .demo-band,
  .privacy,
  .waitlist,
  footer {
    width: min(100% - 28px, 1180px);
  }

  h1 {
    font-size: 42px;
  }

  .hero-text {
    font-size: 17px;
  }

  .app-layout,
  .preview,
  .insights,
  .workflow-grid {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }

  .timeline-panel {
    padding: 14px;
  }

  .video-frame {
    min-height: 210px;
  }

  .demo-band,
  .privacy {
    padding: 28px;
  }

  .signup-form {
    display: grid;
    gap: 8px;
    padding: 8px;
  }

  .signup-form input {
    min-height: 44px;
  }

  footer {
    display: grid;
    gap: 8px;
  }
}