:root {
  --bg: #06100d;
  --bg-alt: #0a1512;
  --surface: rgba(15, 28, 24, 0.84);
  --surface-strong: rgba(21, 37, 31, 0.94);
  --line: rgba(145, 214, 166, 0.18);
  --line-strong: rgba(145, 214, 166, 0.42);
  --text: #eff7f2;
  --text-soft: #a4b7ad;
  --accent: #8fd6a6;
  --accent-strong: #d0ffdf;
  --amber: #ffd58a;
  --shadow: 0 32px 90px rgba(0, 0, 0, 0.45);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --content-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(103, 191, 135, 0.16), transparent 26%),
    radial-gradient(circle at 85% 12%, rgba(255, 213, 138, 0.12), transparent 18%),
    linear-gradient(180deg, #07110f 0%, #050908 100%);
  color: var(--text);
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.014) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, black 35%, transparent 90%);
  pointer-events: none;
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.12;
  background-image: radial-gradient(circle at 20% 20%, rgba(255,255,255,0.1) 0 1px, transparent 1px), radial-gradient(circle at 80% 60%, rgba(255,255,255,0.08) 0 1px, transparent 1px);
  background-size: 120px 120px;
}

.site-header,
.hero,
.signal-band,
.section,
.site-footer {
  width: min(calc(100% - 32px), var(--content-width));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0 12px;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(143,214,166,0.14), rgba(143,214,166,0.04));
  font-family: "IBM Plex Mono", monospace;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.brand-subline,
.site-nav a,
.muted-label,
.status-text,
.band-label,
.feature-index,
.timeline-step,
.site-footer p:first-child {
  font-family: "IBM Plex Mono", monospace;
}

.brand-subline,
.site-nav a,
.hero-text,
.alarm-item-meta,
.signal-band p,
.feature-card p,
.section-copy,
.comparison-card li,
.faq-list p,
.site-footer p:last-child {
  color: var(--text-soft);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.78rem;
  font-family: "IBM Plex Mono", monospace;
}

.site-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.site-nav a {
  text-decoration: none;
  font-size: 0.95rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: stretch;
  padding: 28px 0 24px;
}

.hero-copy,
.hero-panel,
.signal-band,
.feature-card,
.experience-timeline article,
.comparison-card,
.faq-list details,
.cta-section {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 24, 21, 0.94), rgba(11, 17, 15, 0.88));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-copy,
.hero-panel,
.cta-section {
  border-radius: var(--radius-xl);
}

.hero-copy {
  padding: 34px;
}

.hero-copy h1,
.section-heading h2,
.cta-section h2 {
  margin: 0;
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.hero-copy h1 {
  font-size: clamp(3rem, 6vw, 5.6rem);
  max-width: 12ch;
}

.hero-text {
  max-width: 60ch;
  font-size: 1.08rem;
  line-height: 1.7;
  margin: 22px 0 28px;
}

.hero-actions,
.cta-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 600;
}

.button-primary {
  background: linear-gradient(180deg, var(--accent), #69b885);
  color: #07110f;
}

.button-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}

.hero-metrics {
  margin: 32px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.hero-metrics div {
  padding: 18px;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.05);
  background: rgba(255,255,255,0.018);
}

.hero-metrics dt {
  margin-bottom: 10px;
  color: var(--accent-strong);
  font-size: 0.95rem;
  font-family: "IBM Plex Mono", monospace;
}

.hero-metrics dd {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.6;
}

.hero-panel {
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: auto -20% -35% 35%;
  height: 240px;
  background: radial-gradient(circle, rgba(143,214,166,0.28), transparent 62%);
  pointer-events: none;
}

.panel-topline,
.status-row,
.alarm-item,
.signal-band,
.experience-timeline,
.comparison-grid,
.split {
  display: flex;
}

.panel-topline,
.status-row,
.alarm-item {
  align-items: center;
  justify-content: space-between;
}

.panel-topline {
  margin-bottom: 18px;
  color: var(--text-soft);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.next-alarm-card {
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(143,214,166,0.08), rgba(255,255,255,0.03));
  border: 1px solid var(--line-strong);
}

.alarm-time {
  margin: 10px 0 14px;
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(2.3rem, 6vw, 4rem);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  border: 1px solid var(--line-strong);
}

.status-chip.active {
  background: rgba(143,214,166,0.14);
  color: var(--accent-strong);
}

.status-chip.quiet {
  color: var(--amber);
  border-color: rgba(255, 213, 138, 0.32);
}

.alarm-stack {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.alarm-item {
  padding: 18px;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.04);
  background: rgba(255,255,255,0.025);
}

.alarm-item.active {
  border-color: var(--line-strong);
  box-shadow: inset 2px 0 0 var(--accent);
}

.alarm-item-time {
  margin: 0 0 6px;
  font-size: 1.6rem;
  font-family: "IBM Plex Mono", monospace;
}

.alarm-item-meta {
  margin: 0;
}

.toggle {
  width: 56px;
  height: 30px;
  border-radius: 999px;
  position: relative;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.07);
}

.toggle::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #d8e6de;
  transition: transform 180ms ease;
}

.toggle.on {
  background: rgba(143,214,166,0.18);
  border-color: var(--line-strong);
}

.toggle.on::after {
  transform: translateX(24px);
  background: var(--accent);
}

.signal-band {
  gap: 16px;
  border-radius: 24px;
  padding: 20px;
  margin-bottom: 24px;
}

.signal-band > div {
  flex: 1;
  min-width: 0;
  padding: 14px;
  border-left: 1px solid rgba(255,255,255,0.06);
}

.signal-band > div:first-child {
  border-left: none;
}

.band-label {
  color: var(--accent-strong);
  margin-top: 0;
}

.section {
  padding: 52px 0;
}

.section-heading {
  margin-bottom: 24px;
}

.section-heading h2,
.cta-section h2 {
  font-size: clamp(2.1rem, 5vw, 4rem);
}

.split {
  justify-content: space-between;
  align-items: end;
  gap: 20px;
}

.section-copy {
  max-width: 48ch;
  line-height: 1.7;
}

.feature-grid,
.experience-timeline,
.comparison-grid {
  gap: 16px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card,
.experience-timeline article,
.comparison-card,
.faq-list details {
  border-radius: var(--radius-lg);
  padding: 24px;
}

.feature-index,
.timeline-step {
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
}

.feature-card h3,
.experience-timeline h3,
.comparison-card h3 {
  margin: 14px 0 12px;
  font-size: 1.35rem;
}

.feature-card p,
.experience-timeline p,
.comparison-card ul,
.faq-list p {
  line-height: 1.7;
}

.experience-timeline article,
.comparison-card {
  flex: 1;
}

.comparison-card ul {
  margin: 0;
  padding-left: 18px;
}

.comparison-card li + li {
  margin-top: 10px;
}

.comparison-card.emphasized {
  border-color: var(--line-strong);
  background: linear-gradient(180deg, rgba(143,214,166,0.1), rgba(10,18,15,0.95));
}

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

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

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

.faq-list summary::after {
  content: "+";
  float: right;
  color: var(--accent);
}

.faq-list details[open] summary::after {
  content: "-";
}

.cta-section {
  padding: 28px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 26px 0 34px;
  color: var(--text-soft);
}

@media (max-width: 1100px) {
  .hero,
  .feature-grid,
  .experience-timeline,
  .comparison-grid,
  .signal-band,
  .cta-section,
  .site-footer,
  .split {
    grid-template-columns: 1fr;
    flex-direction: column;
  }

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

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

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

  .site-footer {
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .hero-copy,
  .hero-panel,
  .cta-section,
  .feature-card,
  .experience-timeline article,
  .comparison-card,
  .faq-list details {
    padding: 20px;
  }

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

  .hero-copy h1 {
    font-size: 2.9rem;
  }

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

  .button {
    justify-content: center;
  }
}