/* ════════════════════════════════════════════════════════════════════
   LE CHALET STUDIO · SITE VITRINE
   Direction : brutaliste studio + glassmorphism + aurora gradient
   ════════════════════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

:root {
  /* Palette */
  --black: #050505;
  --ink:   #0a0a0a;
  --ink2:  #0f0f10;
  --surface:  #131315;
  --surface2: #1a1a1d;
  --border:   rgba(255,255,255,.06);
  --border2:  rgba(255,255,255,.12);
  --border3:  rgba(255,255,255,.22);
  --white:    #ffffff;
  --muted:    #6a6a72;
  --muted2:   #9a9aa3;
  --soft:     #cfcfd6;

  /* Accents */
  --red:       #ff2424;
  --red-2:     #ff5a3c;
  --red-dim:   rgba(255, 36, 36, .14);
  --red-glow:  rgba(255, 36, 36, .42);
  --violet:    #6c4cff;
  --violet-2:  #9d6bff;
  --cyan:      #2ad4ff;

  /* Type */
  --font-head: 'Barlow Condensed', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'Space Mono', ui-monospace, 'SF Mono', 'Courier New', monospace;

  /* Easings */
  --ease:      cubic-bezier(.22, 1, .36, 1);
  --ease-out:  cubic-bezier(.16, 1, .3, 1);
  --ease-in:   cubic-bezier(.7, 0, .84, 0);

  /* Shadows */
  --shadow-card: 0 1px 0 rgba(255,255,255,.04) inset, 0 30px 60px -30px rgba(0,0,0,.6);
  --shadow-pop:  0 0 0 1px rgba(255,36,36,.45), 0 0 60px rgba(255,36,36,.18);
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  min-height: 100vh;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

/* ─────────────────────  BACKGROUNDS ───────────────────── */

.sonic-bg {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -3;
  background: var(--black);
}

.aurora {
  position: fixed;
  inset: -20%;
  z-index: -2;
  pointer-events: none;
  filter: blur(90px);
  opacity: .55;
}

.aurora__blob {
  position: absolute;
  border-radius: 50%;
  mix-blend-mode: screen;
  will-change: transform;
}

.aurora__blob--a {
  width: 60vw;
  height: 60vw;
  top: -10%;
  left: -15%;
  background: radial-gradient(circle, rgba(255,36,36,.65), transparent 60%);
  animation: drift 22s ease-in-out infinite alternate;
}
.aurora__blob--b {
  width: 55vw;
  height: 55vw;
  top: 30%;
  right: -10%;
  background: radial-gradient(circle, rgba(108,76,255,.55), transparent 60%);
  animation: drift 28s ease-in-out infinite alternate-reverse;
}
.aurora__blob--c {
  width: 40vw;
  height: 40vw;
  bottom: -15%;
  left: 20%;
  background: radial-gradient(circle, rgba(42,212,255,.30), transparent 60%);
  animation: drift 34s ease-in-out infinite alternate;
}

@keyframes drift {
  0%   { transform: translate3d(0,0,0) scale(1); }
  50%  { transform: translate3d(4vw, -3vw, 0) scale(1.1); }
  100% { transform: translate3d(-3vw, 4vw, 0) scale(.95); }
}

.grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, #000 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 40%, transparent 80%);
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  mix-blend-mode: overlay;
}

/* ─────────────────────  HEADER ───────────────────── */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 1rem 2.5rem;
  border-bottom: 1px solid var(--border);
  background: rgba(5,5,5,.55);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.15rem;
  letter-spacing: .2em;
  text-transform: uppercase;
}

.header-bracket {
  color: var(--red);
  font-size: 1.4rem;
  line-height: 1;
  text-shadow: 0 0 18px rgba(255,36,36,.6);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  color: var(--muted2);
  letter-spacing: .18em;
  text-transform: uppercase;
}

.site-nav a {
  position: relative;
  padding: .35rem 0;
  transition: color .2s var(--ease);
}

.site-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 1px;
  width: 0;
  background: var(--red);
  transition: width .25s var(--ease);
}

.site-nav a:not(.nav-cta):hover { color: var(--white); }
.site-nav a:not(.nav-cta):hover::after { width: 100%; }

.site-nav .nav-cta {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: var(--white);
  border: 1px solid var(--border3);
  padding: .55rem .85rem;
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.01));
  transition: all .25s var(--ease);
}

.site-nav .nav-cta:hover {
  color: var(--white);
  border-color: var(--red);
  background: rgba(255,36,36,.12);
  box-shadow: 0 0 0 1px rgba(255,36,36,.4), 0 0 28px rgba(255,36,36,.22);
}

.site-nav .nav-cta__arrow {
  transition: transform .25s var(--ease);
}
.site-nav .nav-cta:hover .nav-cta__arrow { transform: translateX(3px); }

/* ─────────────────────  HERO ───────────────────── */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 9rem 2.5rem 6rem;
  isolation: isolate;
}

.hero::after {
  content: "";
  position: absolute;
  left: 2.5rem;
  right: 2.5rem;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--red) 20%, rgba(255,255,255,.2) 50%, transparent);
}

.hero-copy {
  width: min(1080px, 100%);
  position: relative;
  z-index: 2;
}

.hero-eyebrow,
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .3em;
  color: var(--red);
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  padding: .35rem .65rem;
  border: 1px solid var(--red-dim);
  background: linear-gradient(180deg, rgba(255,36,36,.06), rgba(255,36,36,.02));
  border-radius: 2px;
}

.eyebrow-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 3px rgba(255,36,36,.18), 0 0 14px var(--red);
  animation: pulse-dot 1.6s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.35); opacity: .6; }
}

.hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(5rem, 16vw, 15rem);
  line-height: .82;
  text-transform: uppercase;
  max-width: 1100px;
  letter-spacing: -0.01em;
}

.hero h1 .line { display: block; }

.hero h1 .line--accent {
  background: linear-gradient(135deg, var(--red) 0%, var(--red-2) 50%, var(--violet-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 35px rgba(255,36,36,.25));
}

.section-head h2 span {
  background: linear-gradient(135deg, var(--red), var(--red-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  margin-top: 1.6rem;
  max-width: 580px;
  color: var(--soft);
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  line-height: 1.55;
  font-weight: 400;
}

.hero-sub strong {
  color: var(--white);
  font-weight: 600;
  background: linear-gradient(120deg, var(--white), var(--red-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .9rem;
  margin-top: 2.4rem;
}

/* Buttons */
.btn-primary,
.btn-secondary {
  position: relative;
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1.4rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  transition: transform .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease);
  overflow: hidden;
  isolation: isolate;
}

.btn-primary {
  background: var(--white);
  color: var(--black);
  border: 1px solid var(--white);
  padding: .9rem 1.4rem;
  box-shadow: 0 14px 34px -16px rgba(255,255,255,.4);
}

.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, var(--red) 0%, var(--red-2) 50%, var(--violet) 100%);
  z-index: -1;
  opacity: 0;
  transition: opacity .3s var(--ease);
}

.btn-primary:hover {
  color: var(--white);
  border-color: var(--red);
  transform: translateY(-2px);
  box-shadow: 0 18px 50px -10px rgba(255,36,36,.6);
}

.btn-primary:hover::before { opacity: 1; }

.btn-arrow {
  display: inline-block;
  transition: transform .25s var(--ease);
}
.btn-primary:hover .btn-arrow,
.btn-secondary:hover .btn-arrow { transform: translateX(4px); }

.btn-secondary {
  border: 1px solid var(--border3);
  color: var(--white);
  padding: .9rem 1.2rem;
  background: rgba(255,255,255,.03);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--white);
  background: rgba(255,255,255,.08);
  transform: translateY(-2px);
}

.magnetic { will-change: transform; }

/* Hero trust counters */
.hero-trust {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, max-content));
  gap: 2.5rem;
  margin-top: 3rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--border);
  max-width: 600px;
}

.trust-item {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

.trust-item strong {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1;
  letter-spacing: -.02em;
  background: linear-gradient(135deg, var(--white), var(--muted2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.trust-unit {
  display: inline-block;
  margin-left: .25rem;
  font-size: .55em;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--red);
  -webkit-text-fill-color: var(--red);
}

.trust-item span:last-child {
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted2);
  line-height: 1.4;
}

/* Hero meter (console card) */
.hero-meter {
  position: absolute;
  right: clamp(1.5rem, 5vw, 4.5rem);
  bottom: 5rem;
  width: min(420px, calc(100vw - 3rem));
  border: 1px solid var(--border2);
  background: linear-gradient(180deg, rgba(20,20,22,.78), rgba(10,10,12,.82));
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  padding: 1rem 1rem 0.85rem;
  box-shadow: var(--shadow-card),
              0 0 80px -20px rgba(255,36,36,.18),
              inset 0 1px 0 rgba(255,255,255,.06);
  border-radius: 4px;
  overflow: hidden;
}

.hero-meter::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, transparent 60%, rgba(255,36,36,.08));
}

.meter-top,
.meter-grid,
.meter-foot,
.signal-strip,
.site-footer {
  font-family: var(--font-mono);
}

.meter-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted2);
  font-size: .62rem;
  letter-spacing: .2em;
  border-bottom: 1px solid var(--border2);
  padding-bottom: .75rem;
}

.meter-top__title {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  color: var(--white);
  font-weight: 700;
}

.meter-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #2dff7d;
  box-shadow: 0 0 12px #2dff7d, 0 0 0 2px rgba(45,255,125,.18);
}

.meter-top__chip {
  padding: .2rem .5rem;
  border: 1px solid var(--red-dim);
  color: var(--red);
  background: rgba(255,36,36,.06);
  border-radius: 2px;
}

.meter-wave {
  height: 130px;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 1rem 0;
}

.meter-wave span {
  flex: 1;
  min-width: 3px;
  height: 30%;
  background: linear-gradient(180deg, var(--white), var(--red));
  opacity: .8;
  border-radius: 1px;
  transform-origin: center;
  animation: pulse 1.7s var(--ease) infinite alternate;
}

.meter-wave span:nth-child(2n)  { animation-duration: 1.15s; }
.meter-wave span:nth-child(3n)  { animation-duration: 1.45s; }
.meter-wave span:nth-child(5n)  { animation-duration: 1.95s; }
.meter-wave span:nth-child(7n)  { animation-duration: 2.25s; }
.meter-wave span:nth-child(11n) { animation-duration: 2.6s; }

@keyframes pulse {
  from { height: 18%; opacity: .35; }
  to   { height: 92%; opacity: .98; }
}

.meter-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .5rem;
}

.meter-cell {
  border: 1px solid var(--border2);
  padding: .65rem .7rem;
  background: rgba(0,0,0,.45);
  border-radius: 2px;
}

.metric-label {
  display: block;
  color: var(--muted2);
  font-size: .56rem;
  letter-spacing: .16em;
  margin-bottom: .35rem;
}

.meter-cell strong {
  font-size: .9rem;
  letter-spacing: .08em;
  color: var(--white);
}

.meter-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: .9rem;
  padding-top: .75rem;
  border-top: 1px solid var(--border2);
  font-size: .54rem;
  letter-spacing: .2em;
  color: var(--muted2);
  text-transform: uppercase;
}

.meter-foot__chain {
  color: var(--red);
}

/* ─────────────────────  SIGNAL STRIP ───────────────────── */

.signal-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border2);
  border-bottom: 1px solid var(--border2);
  background: linear-gradient(180deg, rgba(0,0,0,.7), rgba(0,0,0,.55));
  backdrop-filter: blur(8px);
}

.signal-strip div {
  min-height: 84px;
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: 1.1rem 1.5rem;
  border-right: 1px solid var(--border2);
  color: var(--muted2);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
  transition: color .25s var(--ease), background .25s var(--ease);
}

.signal-strip div:last-child { border-right: none; }

.signal-strip div::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--red);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform .35s var(--ease);
}

.signal-strip div:hover {
  color: var(--white);
  background: rgba(255,255,255,.025);
}
.signal-strip div:hover::before { transform: scaleY(1); }

.signal-strip span {
  color: var(--red);
  font-weight: 700;
}

/* ─────────────────────  SECTIONS ───────────────────── */

.section {
  padding: 7rem 2.5rem;
  position: relative;
}

.section + .section {
  border-top: 1px solid var(--border);
}

.section-head {
  max-width: 1080px;
  margin-bottom: 3rem;
}

.section-head h2 {
  font-family: var(--font-head);
  font-size: clamp(3.2rem, 9vw, 7.5rem);
  line-height: .86;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -.01em;
}

.section-lead {
  margin-top: 1.4rem;
  max-width: 560px;
  color: var(--muted2);
  font-size: 1rem;
  line-height: 1.6;
}

/* Process */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.process-item {
  position: relative;
  border: 1px solid var(--border2);
  background: linear-gradient(180deg, rgba(20,20,22,.6), rgba(10,10,12,.6));
  backdrop-filter: blur(10px);
  min-height: 280px;
  padding: 1.6rem 1.5rem;
  display: flex;
  flex-direction: column;
  border-radius: 4px;
  overflow: hidden;
  transition: transform .35s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}

.process-item::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(600px circle at var(--mx, 50%) var(--my, 0%), rgba(255,36,36,.12), transparent 40%);
  opacity: 0;
  transition: opacity .3s var(--ease);
  pointer-events: none;
}

.process-item:hover {
  transform: translateY(-4px);
  border-color: var(--border3);
  background: linear-gradient(180deg, rgba(28,28,32,.7), rgba(14,14,16,.7));
}
.process-item:hover::before { opacity: 1; }

.item-num {
  font-family: var(--font-mono);
  color: var(--red);
  font-size: .68rem;
  letter-spacing: .22em;
  margin-bottom: 1.2rem;
}

.process-item h3 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 2.1rem;
  line-height: 1;
  text-transform: uppercase;
}

.process-item p {
  margin-top: 1rem;
  color: var(--muted2);
  font-size: .92rem;
  line-height: 1.65;
  flex: 1;
}

.item-tag {
  margin-top: 1.6rem;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: .58rem;
  letter-spacing: .22em;
  color: var(--muted);
  border: 1px solid var(--border2);
  padding: .3rem .55rem;
  border-radius: 2px;
  text-transform: uppercase;
}

/* Engine section */
.engine-section {
  background: radial-gradient(ellipse at top, rgba(108,76,255,.06), transparent 60%);
}

.engine-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.2rem;
}

.engine-card {
  position: relative;
  border: 1px solid var(--border2);
  background: linear-gradient(160deg, rgba(20,20,28,.85), rgba(10,10,14,.7));
  backdrop-filter: blur(20px);
  padding: 2rem;
  border-radius: 6px;
  overflow: hidden;
}

.engine-card--lead::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(800px circle at 0% 0%, rgba(255,36,36,.12), transparent 40%),
    radial-gradient(600px circle at 100% 100%, rgba(108,76,255,.18), transparent 50%);
  pointer-events: none;
}

.engine-card__head {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.engine-tag {
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .26em;
  color: var(--white);
  border: 1px solid var(--border3);
  padding: .35rem .65rem;
  background: rgba(255,255,255,.04);
  border-radius: 2px;
  text-transform: uppercase;
}

.engine-status {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .2em;
  color: #2dff7d;
}

.engine-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #2dff7d;
  box-shadow: 0 0 12px #2dff7d;
  animation: pulse-dot 1.6s ease-in-out infinite;
}

.engine-card h3 {
  position: relative;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  line-height: .92;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.engine-card p {
  position: relative;
  color: var(--soft);
  font-size: 1rem;
  line-height: 1.65;
  max-width: 56ch;
}

.engine-list {
  position: relative;
  list-style: none;
  margin-top: 1.6rem;
  display: grid;
  gap: .55rem;
}

.engine-list li {
  display: flex;
  gap: .65rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--muted2);
  letter-spacing: .04em;
}

.engine-list li span {
  color: var(--red);
  font-weight: 700;
}

.engine-side {
  display: grid;
  gap: 1rem;
}

.engine-mini {
  position: relative;
  border: 1px solid var(--border2);
  background: linear-gradient(180deg, rgba(20,20,22,.7), rgba(10,10,12,.6));
  backdrop-filter: blur(10px);
  padding: 1.3rem 1.4rem;
  border-radius: 4px;
  transition: transform .3s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}

.engine-mini:hover {
  transform: translateX(4px);
  border-color: var(--border3);
  background: linear-gradient(180deg, rgba(28,28,32,.78), rgba(14,14,16,.7));
}

.engine-mini__num {
  display: block;
  font-family: var(--font-mono);
  color: var(--red);
  font-size: .66rem;
  letter-spacing: .22em;
  margin-bottom: .55rem;
}

.engine-mini h4 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.4rem;
  line-height: 1;
  text-transform: uppercase;
  margin-bottom: .55rem;
}

.engine-mini p {
  color: var(--muted2);
  font-size: .85rem;
  line-height: 1.55;
}

/* Sound modes */
.split-section { }

.sound-modes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.mode-panel {
  position: relative;
  border: 1px solid var(--border2);
  background: linear-gradient(180deg, rgba(18,18,20,.72), rgba(10,10,12,.65));
  backdrop-filter: blur(14px);
  min-height: 320px;
  padding: 1.8rem;
  border-radius: 6px;
  overflow: hidden;
  transition: transform .35s var(--ease), border-color .25s var(--ease);
}

.mode-panel:hover {
  transform: translateY(-4px);
}

.mode-panel.is-hot {
  border-color: rgba(255,36,36,.45);
  background: linear-gradient(180deg, rgba(255,36,36,.16), rgba(14,14,16,.95));
  box-shadow: 0 0 80px -20px rgba(255,36,36,.35);
}

.mode-panel__glow {
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 30% 30%, rgba(255,36,36,.25), transparent 60%);
  filter: blur(40px);
  pointer-events: none;
  opacity: .7;
}

.mode-tag {
  position: relative;
  font-family: var(--font-mono);
  color: var(--red);
  font-size: .68rem;
  letter-spacing: .24em;
  margin-bottom: 1.4rem;
  display: inline-block;
  padding: .3rem .6rem;
  border: 1px solid var(--red-dim);
  background: rgba(255,36,36,.08);
  border-radius: 2px;
}

.mode-panel:not(.is-hot) .mode-tag {
  color: var(--white);
  border-color: var(--border3);
  background: rgba(255,255,255,.04);
}

.mode-panel h3 {
  position: relative;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: .9;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
  letter-spacing: -.01em;
}

.mode-panel p {
  position: relative;
  color: var(--soft);
  font-size: .98rem;
  line-height: 1.6;
  max-width: 42ch;
}

.mode-list {
  position: relative;
  list-style: none;
  margin-top: 1.4rem;
  display: grid;
  gap: .4rem;
}

.mode-list li {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--muted2);
  text-transform: uppercase;
  position: relative;
  padding-left: 1rem;
}

.mode-list li::before {
  content: "+";
  position: absolute;
  left: 0;
  color: var(--red);
  font-weight: 700;
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.price-line {
  position: relative;
  border: 1px solid var(--border2);
  background: linear-gradient(180deg, rgba(20,20,22,.72), rgba(10,10,12,.65));
  backdrop-filter: blur(14px);
  min-height: 180px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-family: var(--font-mono);
  border-radius: 4px;
  overflow: hidden;
  transition: transform .3s var(--ease), border-color .25s var(--ease);
}

.price-line:hover {
  transform: translateY(-4px);
  border-color: var(--border3);
}

.price-line--feature {
  border-color: rgba(255,36,36,.45);
  background: linear-gradient(180deg, rgba(255,36,36,.12), rgba(14,14,16,.92));
  box-shadow: var(--shadow-pop);
}

.price-line__pop {
  position: absolute;
  top: .9rem;
  right: .9rem;
  font-family: var(--font-mono);
  font-size: .56rem;
  letter-spacing: .24em;
  color: var(--white);
  background: var(--red);
  padding: .2rem .5rem;
  border-radius: 2px;
  text-transform: uppercase;
}

.price-line__tag {
  color: var(--muted2);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.price-line strong {
  font-family: var(--font-head);
  color: var(--white);
  font-size: 3rem;
  line-height: 1;
  letter-spacing: -.01em;
  font-weight: 900;
}

.price-line__unit {
  font-size: 1.1rem;
  color: var(--red);
  margin-left: .15rem;
  letter-spacing: .12em;
  font-weight: 700;
}

.price-line__hint {
  color: var(--muted2);
  font-size: .68rem;
  letter-spacing: .08em;
}

.pricing-cta {
  margin-top: 1rem;
}

/* Final CTA band */
.cta-band {
  border-top: 1px solid var(--border2);
  padding: 6rem 2.5rem;
  background:
    radial-gradient(ellipse at center, rgba(255,36,36,.1), transparent 60%),
    linear-gradient(180deg, rgba(0,0,0,.4), rgba(0,0,0,.85));
}

.cta-band__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
  flex-wrap: wrap;
  max-width: 1280px;
  margin: 0 auto;
}

.cta-band__title {
  font-family: var(--font-head);
  font-size: clamp(2.8rem, 8vw, 6rem);
  line-height: .9;
  font-weight: 900;
  text-transform: uppercase;
  margin: 1rem 0;
}

.cta-band__title span {
  background: linear-gradient(135deg, var(--red), var(--red-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.cta-band__sub {
  color: var(--muted2);
  font-size: .98rem;
  max-width: 38ch;
}

/* Footer */
.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.6rem 2.5rem;
  border-top: 1px solid var(--border2);
  background: rgba(0,0,0,.85);
  color: var(--muted2);
  font-size: .65rem;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.footer-mid { color: var(--red); }

.site-footer a {
  transition: color .2s var(--ease), letter-spacing .2s var(--ease);
}
.site-footer a:hover {
  color: var(--white);
  letter-spacing: .22em;
}

/* ─────────────────────  REVEAL ANIMATIONS ───────────────────── */

[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
  .meter-wave span,
  .eyebrow-dot,
  .meter-dot,
  .engine-pulse,
  .aurora__blob { animation: none !important; }
  html { scroll-behavior: auto; }
}

/* ─────────────────────  RESPONSIVE ───────────────────── */

@media (max-width: 1080px) {
  .engine-grid { grid-template-columns: 1fr; }
  .hero-meter {
    position: relative;
    right: auto;
    bottom: auto;
    margin-top: 2.5rem;
    width: 100%;
    max-width: 480px;
  }
  .hero { display: block; }
}

@media (max-width: 920px) {
  .site-header {
    position: sticky;
    padding: 1rem 1.2rem;
    min-height: auto;
  }
  .site-nav { gap: 1rem; }
  .site-nav a:not(.nav-cta) { display: none; }

  .hero {
    min-height: auto;
    padding: 6rem 1.2rem 3rem;
  }
  .hero::after { left: 1.2rem; right: 1.2rem; }

  .signal-strip,
  .process-grid,
  .sound-modes,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .signal-strip div {
    border-right: 0;
    border-bottom: 1px solid var(--border2);
  }
  .signal-strip div:last-child { border-bottom: 0; }

  .section { padding: 4.5rem 1.2rem; }
  .cta-band { padding: 4rem 1.2rem; }
  .cta-band__inner { flex-direction: column; align-items: flex-start; }

  .site-footer {
    flex-direction: column;
    gap: .65rem;
    padding: 1.2rem 1.2rem;
    text-align: center;
  }
}

@media (max-width: 560px) {
  .header-logo { font-size: .85rem; letter-spacing: .14em; }
  .header-bracket { font-size: 1.2rem; }
  .site-nav .nav-cta { padding: .5rem .65rem; gap: .35rem; }

  .hero h1 { font-size: clamp(3.6rem, 22vw, 6rem); }
  .hero-trust { gap: 1.2rem; grid-template-columns: repeat(3, 1fr); }
  .trust-item strong { font-size: 1.8rem; }
  .trust-item span:last-child { font-size: .54rem; }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }
  .btn-primary,
  .btn-secondary { width: 100%; }

  .engine-card { padding: 1.4rem; }
  .price-line strong { font-size: 2.4rem; }
}