/* ============================================================
   NIX — marketing site
   Brand system: bg #0A0C0F · surface #12161B · mint #2DD4BF
   amber #F5A623 · ember #F0654A · text #F2F5F7
   Font: Instrument Sans
   ============================================================ */

:root {
  --bg: #0A0C0F;
  --surface: #12161B;
  --surface-2: #171C22;
  --line: #1E242B;
  --mint: #2DD4BF;
  --mint-dim: rgba(45, 212, 191, 0.12);
  --amber: #F5A623;
  --ember: #F0654A;
  --text: #F2F5F7;
  --muted: #8B96A0;
  --muted-2: #59646F;
  --radius: 16px;
  --radius-lg: 24px;
  --font: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow { max-width: 760px; }

/* ---------- type ---------- */

h1 {
  font-size: clamp(2.5rem, 5.5vw, 4.25rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 640;
}

h1 em, h2 em {
  font-style: normal;
  color: var(--mint);
}

h2 {
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  font-weight: 620;
  margin-bottom: 18px;
}

h3 {
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  font-weight: 600;
  margin-bottom: 10px;
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 640;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mint);
  margin-bottom: 16px;
}

.eyebrow.ember { color: var(--ember); }

.lede, .section-lede {
  color: var(--muted);
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  line-height: 1.65;
  max-width: 56ch;
}

.section-lede { margin-bottom: 44px; }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 620;
  font-size: 1rem;
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background: var(--mint);
  color: #04211D;
  box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 30px -6px rgba(45, 212, 191, 0.45);
}

.btn-ghost {
  color: var(--text);
  border: 1px solid var(--line);
  background: transparent;
}

.btn-ghost:hover { border-color: var(--muted-2); background: var(--surface); }

.btn-sm { padding: 9px 20px; font-size: 0.92rem; }
.btn-lg { padding: 17px 40px; font-size: 1.1rem; }

/* ---------- nav ---------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(10, 12, 15, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}

.nav.scrolled { border-bottom-color: var(--line); }

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 680;
  font-size: 1.15rem;
  letter-spacing: 0.06em;
}

.mark { width: 30px; height: 30px; border-radius: 8px; }
.mark rect { stroke: var(--line); stroke-width: 1; }
.mark-lg { width: 56px; height: 56px; margin-bottom: 24px; }

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 520;
  transition: color 0.15s ease;
}

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

/* ---------- hero ---------- */

.hero {
  position: relative;
  padding: 168px 0 96px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -280px;
  right: -180px;
  width: 720px;
  height: 720px;
  background: radial-gradient(circle, rgba(45, 212, 191, 0.10) 0%, transparent 62%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}

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

.hero-actions.center { justify-content: center; }

.hero-note {
  margin-top: 22px;
  font-size: 0.9rem;
  color: var(--muted-2);
  letter-spacing: 0.01em;
}

.hero-copy .lede { margin-top: 22px; }

/* ---------- phone mockup ---------- */

.hero-visual { display: flex; justify-content: center; }

.phone {
  width: 300px;
  aspect-ratio: 9 / 19.5;
  border-radius: 44px;
  padding: 10px;
  background: linear-gradient(160deg, #232A32, #0E1114);
  box-shadow:
    0 40px 90px -30px rgba(0, 0, 0, 0.8),
    0 0 80px -30px rgba(45, 212, 191, 0.18);
}

.phone-screen {
  height: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 36px;
  padding: 20px 22px 26px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.phone-status {
  width: 100%;
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--muted-2);
  font-weight: 600;
  margin-bottom: 26px;
}

.status-dots { letter-spacing: 2px; font-size: 0.5rem; align-self: center; }

/* SOS screen (matches in-app UI) */

.sos-topbar {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 24px;
}

.sos-cycle {
  font-size: 0.68rem;
  font-weight: 640;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.sos-close {
  position: absolute;
  right: -6px;
  top: -8px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--surface-2);
  color: var(--muted);
  display: grid;
  place-items: center;
  font-size: 1.05rem;
  line-height: 1;
}

.breath-wrap {
  position: relative;
  width: 208px;
  height: 208px;
  display: grid;
  place-items: center;
  margin: auto 0 22px;
}

.breath-track {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.breath-core {
  width: 164px;
  height: 164px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 38%, rgba(45, 212, 191, 0.2), rgba(45, 212, 191, 0.08) 75%);
  border: 2px solid var(--mint);
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 4px;
  transform: scale(0.74);
  will-change: transform;
}

#breath-arc { will-change: stroke-dashoffset; }

.breath-word {
  font-size: 1.3rem;
  font-weight: 620;
  letter-spacing: -0.01em;
  color: var(--text);
  white-space: nowrap;
}

.breath-count {
  font-size: 1.55rem;
  font-weight: 660;
  color: var(--mint);
  font-variant-numeric: tabular-nums;
}

.sos-caption {
  font-size: 0.88rem;
  color: var(--muted);
  text-align: center;
  max-width: 30ch;
  min-height: 2.6em;
  line-height: 1.5;
  margin-bottom: 14px;
}

.sos-coach {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.9rem;
  font-weight: 620;
  color: var(--mint);
  margin-bottom: 20px;
}

.sos-coach svg { width: 15px; height: 15px; }

.sos-btns {
  display: flex;
  gap: 10px;
  width: 100%;
  margin-top: auto;
}

.sos-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 6px;
  border-radius: 14px;
  font-size: 0.76rem;
  font-weight: 620;
  white-space: nowrap;
}

.sos-btn svg { width: 14px; height: 14px; flex: none; }

.sos-btn-amber {
  color: var(--amber);
  border: 1px solid rgba(245, 166, 35, 0.45);
  background: rgba(245, 166, 35, 0.06);
}

.sos-btn-dark {
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--line);
}

.chip {
  font-size: 0.78rem;
  font-weight: 580;
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 999px;
  padding: 7px 14px;
  white-space: nowrap;
}

.chip-ember {
  color: var(--ember);
  border-color: rgba(240, 101, 74, 0.35);
  background: rgba(240, 101, 74, 0.08);
}

/* ---------- strip ---------- */

.strip { border-block: 1px solid var(--line); background: var(--surface); }

.strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding-block: 26px;
}

.strip-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.strip-item strong {
  font-size: 1.5rem;
  font-weight: 660;
  letter-spacing: -0.02em;
  color: var(--mint);
  font-variant-numeric: tabular-nums;
}

.strip-item span { color: var(--muted); font-size: 0.9rem; line-height: 1.45; }

.strip-divider { width: 1px; align-self: stretch; background: var(--line); }

/* ---------- sections ---------- */

.section { padding: 112px 0; }

.section-alt {
  background: linear-gradient(180deg, var(--bg), #0C0F13 30%, #0C0F13 70%, var(--bg));
  border-block: 1px solid var(--line);
}

/* ---------- cards ---------- */

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.card-head { margin-bottom: 26px; }
.card-head p, .card > p { color: var(--muted); font-size: 0.98rem; }

.protocol-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 24px;
  align-items: stretch;
}

/* ---------- taper chart ---------- */

.taper-chart svg { width: 100%; height: auto; display: block; }

.axis-label, .chart-label {
  font-family: var(--font);
  font-size: 12px;
  fill: var(--muted-2);
  font-weight: 560;
}

.mint-label { fill: var(--mint); font-weight: 640; }
.muted-label { fill: var(--muted-2); }

.line-mint {
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
}

.visible .line-mint { animation: draw 1.6s ease-out 0.2s forwards; }

@keyframes draw { to { stroke-dashoffset: 0; } }

.taper-dot { opacity: 0; }
.visible .taper-dot { animation: pop 0.4s ease-out 1.7s forwards; }

@keyframes pop { from { opacity: 0; r: 0; } to { opacity: 1; r: 5; } }

.chart-key {
  display: flex;
  gap: 22px;
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--muted);
}

.chart-key span { display: inline-flex; align-items: center; gap: 8px; }

.key-dot { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.key-mint { background: var(--mint); }
.key-amber { background: var(--amber); }
.key-flat { background: var(--muted-2); }

/* ---------- roadmap ---------- */

.roadmap {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.roadmap li {
  display: flex;
  gap: 16px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
}

.roadmap li:first-child { border-top: 0; padding-top: 4px; }

.rm-hour {
  flex: 0 0 74px;
  font-size: 0.78rem;
  font-weight: 660;
  letter-spacing: 0.04em;
  color: var(--mint);
  font-variant-numeric: tabular-nums;
  padding-top: 3px;
}

.roadmap strong { font-size: 0.98rem; font-weight: 620; display: block; }
.roadmap p { color: var(--muted); font-size: 0.88rem; line-height: 1.5; margin-top: 2px; }

.rm-peak .rm-hour { color: var(--ember); }

.roadmap li.rm-peak {
  background: linear-gradient(90deg, rgba(240, 101, 74, 0.07), transparent 70%);
  border-radius: 10px;
  padding-left: 12px;
  padding-right: 12px;
  margin-left: -12px;
  margin-right: -12px;
}

/* ---------- split sections ---------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.check-list {
  list-style: none;
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.check-list li {
  position: relative;
  padding-left: 32px;
  color: var(--text);
  font-size: 1rem;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background: var(--mint-dim);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232DD4BF' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E");
  background-size: 11px;
  background-position: center;
  background-repeat: no-repeat;
}

/* ---------- chat mockup ---------- */

.chat-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  max-width: 430px;
  margin: 0 auto;
  box-shadow: 0 30px 70px -30px rgba(0, 0, 0, 0.7);
}

.chat-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}

.coach-badge {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  flex: none;
  display: grid;
  place-items: center;
  color: var(--mint);
  background: rgba(45, 212, 191, 0.12);
  border: 1px solid rgba(45, 212, 191, 0.25);
}

.coach-badge svg { width: 20px; height: 20px; }

.chat-head strong { font-size: 1.12rem; font-weight: 660; letter-spacing: -0.01em; }

.chat-end {
  margin-left: auto;
  font-size: 0.78rem;
  font-weight: 580;
  color: var(--muted);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  white-space: nowrap;
}

.chat-body { display: flex; flex-direction: column; gap: 10px; }

.msg {
  max-width: 85%;
  padding: 11px 15px;
  border-radius: 16px;
  font-size: 0.9rem;
  line-height: 1.5;
}

.msg.user {
  align-self: flex-end;
  background: var(--mint-dim);
  border: 1px solid rgba(45, 212, 191, 0.25);
  border-bottom-right-radius: 5px;
  color: var(--text);
}

.msg.coach {
  align-self: flex-start;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-bottom-left-radius: 5px;
  color: var(--muted);
}

.msg.coach strong { color: var(--text); }

.msg.typing {
  display: inline-flex;
  gap: 5px;
  padding: 14px 16px;
}

.msg.typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--muted-2);
  animation: blink 1.3s infinite;
}

.msg.typing span:nth-child(2) { animation-delay: 0.2s; }
.msg.typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes blink {
  0%, 60%, 100% { opacity: 0.25; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}

.chat-chips {
  display: flex;
  gap: 8px;
  margin-top: 18px;
  overflow: hidden;
}

.msg.coach { color: #C4CDD4; }

.chat-input {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
}

.chat-field {
  flex: 1;
  border: 1px solid var(--line);
  background: var(--surface-2);
  border-radius: 16px;
  padding: 12px 15px;
  font-size: 0.85rem;
  color: var(--muted-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-send {
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--mint);
  color: #04211D;
}

.chat-send svg { width: 17px; height: 17px; }

/* ---------- score card ---------- */

.split-flip .split-copy { order: 2; }
.split-flip .split-visual { order: 1; }

.score-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 34px;
  max-width: 420px;
  margin: 0 auto;
  box-shadow: 0 30px 70px -30px rgba(0, 0, 0, 0.7);
}

.score-ring-wrap {
  position: relative;
  width: 200px;
  margin: 0 auto 28px;
}

.score-ring { width: 100%; display: block; }

.score-arc { transition: stroke-dashoffset 1.4s cubic-bezier(0.22, 1, 0.36, 1); }

.visible .score-arc { stroke-dashoffset: 86.5; } /* 540.4 * (1 - 0.84) */

.score-center {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 2px;
}

.score-num {
  font-size: 3.2rem;
  font-weight: 660;
  letter-spacing: -0.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.score-cap {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-2);
  font-weight: 620;
}

.score-factors {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.score-factors li {
  display: grid;
  grid-template-columns: 130px 1fr;
  align-items: center;
  gap: 14px;
  font-size: 0.85rem;
  color: var(--muted);
}

.bar {
  height: 6px;
  border-radius: 999px;
  background: var(--line);
  overflow: hidden;
  display: block;
}

.bar b {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: var(--mint);
  transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1) 0.3s;
}

.bar-amber b { background: var(--amber); }

.visible .bar b { width: var(--w); }

.score-note {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--muted);
}

.score-note strong { color: var(--amber); font-weight: 640; }

/* ---------- performance mode ---------- */

.perf-split { align-items: start; gap: 56px; }

.perf-mini { margin-top: 30px; padding: 26px; }

.perf-track {
  display: grid;
  grid-template-columns: 0.8fr 2.2fr 1fr 0.9fr 0.8fr;
  gap: 8px;
  min-height: 104px;
}

.perf-block {
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 9px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  border: 1px solid var(--line);
}

.perf-low { background: rgba(245, 166, 35, 0.10); border-color: rgba(245, 166, 35, 0.2); }
.perf-mid { background: rgba(245, 166, 35, 0.16); border-color: rgba(245, 166, 35, 0.28); }
.perf-off { background: var(--surface-2); color: var(--muted-2); }

.perf-protected {
  background: linear-gradient(180deg, rgba(45, 212, 191, 0.22), rgba(45, 212, 191, 0.08));
  border-color: rgba(45, 212, 191, 0.45);
  justify-content: space-between;
  color: var(--text);
  box-shadow: 0 0 34px -10px rgba(45, 212, 191, 0.35);
}

.perf-tag {
  font-size: 0.66rem;
  font-weight: 660;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mint);
}

.perf-legend {
  display: flex;
  gap: 16px;
  margin-top: 14px;
  font-size: 0.78rem;
  color: var(--muted);
  flex-wrap: wrap;
}

.perf-legend span { display: inline-flex; align-items: center; gap: 7px; }

.perf-caption {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

/* ---------- today phone (real app screenshot) ---------- */

.phone-today { width: 300px; margin: 0 auto; }

.phone-shot {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 36px;
}

/* ---------- feature grid ---------- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.timeline-mini {
  list-style: none;
  margin-top: 22px;
  display: flex;
  flex-direction: column;
}

.timeline-mini li {
  position: relative;
  padding: 9px 0 9px 26px;
  font-size: 0.9rem;
  color: var(--muted);
}

.timeline-mini li::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 17px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line);
  border: 1.5px solid var(--muted-2);
}

.timeline-mini li::after {
  content: "";
  position: absolute;
  left: 8.5px;
  top: 27px;
  bottom: -9px;
  width: 1.5px;
  background: var(--line);
}

.timeline-mini li:last-child::after { display: none; }

.timeline-mini li.done::before { background: var(--mint); border-color: var(--mint); }
.timeline-mini li.done::after { background: rgba(45, 212, 191, 0.4); }

.timeline-mini li.here { color: var(--text); font-weight: 600; }

.timeline-mini li.here::before {
  background: var(--bg);
  border-color: var(--mint);
  box-shadow: 0 0 0 4px rgba(45, 212, 191, 0.2);
}

.timeline-mini span {
  display: inline-block;
  min-width: 58px;
  font-weight: 640;
  font-size: 0.8rem;
  color: var(--muted-2);
  font-variant-numeric: tabular-nums;
}

.timeline-mini li.done span, .timeline-mini li.here span { color: var(--mint); }

.insight-quote {
  margin-top: 22px;
  padding: 18px 20px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--mint);
  border-radius: 12px;
}

.insight-quote p {
  font-size: 0.92rem;
  color: var(--text);
  font-style: italic;
  line-height: 1.55;
}

.insight-quote span {
  display: block;
  margin-top: 10px;
  font-size: 0.78rem;
  color: var(--muted-2);
  font-style: normal;
}

.money-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 24px;
}

.money-stat {
  display: flex;
  flex-direction: column;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 12px;
}

.money-stat > svg {
  width: 20px;
  height: 20px;
  color: var(--mint);
  margin-bottom: 12px;
}

.money-num {
  font-size: 1.55rem;
  font-weight: 660;
  letter-spacing: -0.03em;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.money-cap { font-size: 0.76rem; color: var(--muted); margin-top: 4px; line-height: 1.35; }

.money-note { margin-top: 18px; font-size: 0.78rem; color: var(--muted-2); }

/* ---------- differentiators ---------- */

.diff-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px 32px;
  margin-top: 48px;
}

.diff-item h3 {
  font-size: 1.05rem;
  padding-top: 16px;
  border-top: 2px solid var(--mint);
  display: inline-block;
  padding-right: 24px;
}

.diff-item p { color: var(--muted); font-size: 0.92rem; }
.diff-item em { color: var(--text); font-style: italic; }

/* ---------- faq ---------- */

.faq-list { margin-top: 42px; display: flex; flex-direction: column; gap: 12px; }

.faq-list details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-list details[open] { border-color: rgba(45, 212, 191, 0.35); }

.faq-list summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 19px 24px;
  font-weight: 600;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}

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

.faq-x {
  position: relative;
  flex: 0 0 18px;
  height: 18px;
  transition: transform 0.25s ease;
}

.faq-x::before, .faq-x::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 2px;
  background: var(--mint);
  border-radius: 2px;
  translate: -50% -50%;
}

.faq-x::after { rotate: 90deg; }

details[open] .faq-x { transform: rotate(45deg); }

.faq-list details p {
  padding: 0 24px 22px;
  color: var(--muted);
  font-size: 0.96rem;
  max-width: 62ch;
}

/* ---------- final CTA ---------- */

.final {
  position: relative;
  padding: 140px 0 150px;
  text-align: center;
  overflow: hidden;
  border-top: 1px solid var(--line);
}

.final-glow {
  position: absolute;
  bottom: -320px;
  left: 50%;
  translate: -50% 0;
  width: 900px;
  height: 620px;
  background: radial-gradient(ellipse, rgba(45, 212, 191, 0.13) 0%, transparent 62%);
  pointer-events: none;
}

.final-inner { position: relative; }

.final .section-lede { margin: 0 auto 10px; }

/* ---------- footer ---------- */

.footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 48px;
  background: #080A0C;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  text-align: center;
}

.footer-tag { color: var(--muted); font-size: 0.92rem; }

.footer-links { display: flex; gap: 26px; flex-wrap: wrap; justify-content: center; }

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.88rem;
}

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

.footer-fine {
  margin-top: 14px;
  color: var(--muted-2);
  font-size: 0.76rem;
  max-width: 62ch;
  line-height: 1.6;
}

/* ---------- reveal animations ---------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.visible { opacity: 1; transform: none; }

.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }

.card.reveal, .diff-item.reveal { transition-duration: 0.8s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .breath-core, .msg.typing span { animation: none; }
  .line-mint { stroke-dashoffset: 0; animation: none; }
  .taper-dot { opacity: 1; }
  .score-arc, .bar b { transition: none; }
}

/* ---------- responsive ---------- */

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 64px; }
  .hero { padding-top: 140px; }
  .protocol-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; gap: 52px; }
  .split-flip .split-copy { order: 1; }
  .split-flip .split-visual { order: 2; }
  .feature-grid { grid-template-columns: 1fr; }
  .diff-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
}

@media (max-width: 640px) {
  .section { padding: 84px 0; }
  .strip-inner { flex-direction: column; align-items: flex-start; gap: 20px; }
  .strip-divider { display: none; }
  .diff-grid { grid-template-columns: 1fr; gap: 32px; }
  .card { padding: 24px; }
  .nav-inner { padding: 14px 16px; gap: 12px; }
  .wordmark span { font-size: 1rem; }
  .nav .btn-sm { padding: 8px 14px; font-size: 0.84rem; }
}

@media (max-width: 360px) {
  .nav .btn-sm { padding: 8px 11px; font-size: 0.78rem; }
}

/* ============================================================
   WAITLIST SIGNUP  (final CTA section)
   ============================================================ */

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

.signup {
  width: 100%;
  max-width: 560px;
  margin: 32px auto 0;
}

.signup-form { width: 100%; }

.signup-row {
  display: flex;
  gap: 12px;
  align-items: stretch;
}

.signup-input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 17px 20px;
  font-family: var(--font);
  font-size: 1.02rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  outline: none;
  transition: border-color 0.18s ease, background 0.18s ease;
}

.signup-input::placeholder { color: var(--muted-2); }

.signup-input:hover { border-color: var(--muted-2); }

.signup-input:focus-visible {
  border-color: var(--mint);
  background: var(--surface-2);
  box-shadow: 0 0 0 3px var(--mint-dim);
}

.signup-input:invalid:not(:placeholder-shown) { border-color: var(--ember); }

.signup-btn {
  flex: 0 0 auto;
  white-space: nowrap;
}

.signup-btn:disabled {
  opacity: 0.6;
  cursor: default;
}

/* Honeypot — must stay reachable to bots but invisible to humans */
.signup-form input[name="_gotcha"] {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
}

.signup-msg {
  min-height: 1.4em;
  margin: 14px 0 0;
  font-size: 0.95rem;
  line-height: 1.5;
  text-align: center;
}

.signup-msg-success { color: var(--mint); }
.signup-msg-error { color: var(--ember); }

@media (max-width: 560px) {
  .signup-row { flex-direction: column; }
  .signup-input { border-radius: var(--radius); text-align: center; }
  .signup-btn { width: 100%; }
}

.signup-link {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}