/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-deep: #0c0e12;
  --bg-graphite: #14171e;
  --bg-elevated: #1a1e27;
  --bg-glass: rgba(18, 21, 28, 0.78);
  --text: #e8ecf2;
  --text-muted: #6e7a8c;
  --text-dim: #4a5568;
  --silver: #b4c0d0;
  --accent-lime: #c8f535;
  --accent-cyan: #4db8ff;
  --accent-cyan-dim: rgba(77, 184, 255, 0.15);
  --accent-lime-dim: rgba(200, 245, 53, 0.12);
  --border: rgba(255, 255, 255, 0.07);
  --border-bright: rgba(255, 255, 255, 0.14);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --header-h: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --section-pad: clamp(4rem, 8vw, 7rem);
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

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

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
}

ul, ol { list-style: none; }

/* ===== UTILITIES ===== */
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 1.25rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.section-lead {
  color: var(--text-muted);
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  max-width: 42ch;
  margin-top: 1.25rem;
  line-height: 1.7;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.2s var(--ease), box-shadow 0.3s var(--ease);
}

.btn--primary {
  background: var(--accent-lime);
  color: var(--bg-deep);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: #d4ff4a;
  box-shadow: 0 0 32px rgba(200, 245, 53, 0.25);
  transform: translateY(-1px);
}

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

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.btn--full { width: 100%; }

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  transition: background 0.4s var(--ease), backdrop-filter 0.4s var(--ease), border-color 0.4s var(--ease);
}

.header.is-scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  z-index: 1001;
}

.header__logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-sm);
  color: var(--accent-lime);
}

.header__logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.header__nav {
  display: flex;
  gap: 2rem;
}

.header__link {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color 0.25s;
  position: relative;
}

.header__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-cyan);
  transition: width 0.3s var(--ease);
}

.header__link:hover,
.header__link:focus-visible { color: var(--text); }

.header__link:hover::after,
.header__link:focus-visible::after { width: 100%; }

.header__cta {
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.55rem 1.2rem;
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-sm);
  transition: border-color 0.25s, color 0.25s;
}

.header__cta:hover,
.header__cta:focus-visible {
  border-color: var(--accent-lime);
  color: var(--accent-lime);
}

.header__burger {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 32px;
  padding: 4px 0;
  cursor: pointer;
  z-index: 1001;
}

.header__burger span {
  display: block;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.3s var(--ease), opacity 0.3s;
}

.header__burger.is-open span:first-child {
  transform: translateY(3.75px) rotate(45deg);
}

.header__burger.is-open span:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

.header__mobile {
  position: fixed;
  inset: 0;
  background: rgba(12, 14, 18, 0.97);
  backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s var(--ease), visibility 0.4s;
  z-index: 999;
}

.header__mobile.is-open {
  opacity: 1;
  visibility: visible;
}

.header__mobile-link {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color 0.25s;
}

.header__mobile-link:hover,
.header__mobile-link:focus-visible { color: var(--text); }

.header__mobile-link--accent { color: var(--accent-lime); }

/* ===== COVER / DIAGNOSTIC ===== */
.cover {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.cover__media {
  position: absolute;
  inset: 0;
}

.cover__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}

.cover__media::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(12, 14, 18, 0.55) 0%, rgba(12, 14, 18, 0.3) 40%, rgba(12, 14, 18, 0.92) 100%),
    linear-gradient(90deg, rgba(12, 14, 18, 0.7) 0%, transparent 55%);
}

.cover__scan {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(77, 184, 255, 0.06) 50%, transparent 100%);
  background-size: 100% 8px;
  animation: scanMove 4s linear infinite;
  pointer-events: none;
  z-index: 2;
}

@keyframes scanMove {
  0% { background-position: 0 -100%; }
  100% { background-position: 0 200%; }
}

.cover__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(77, 184, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77, 184, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 45%, black, transparent);
  pointer-events: none;
  z-index: 2;
}

.cover__dots {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.cover__dot {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: 12px;
  height: 12px;
  border: 1.5px solid var(--accent-cyan);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.cover__dot::before {
  content: '';
  position: absolute;
  inset: -6px;
  border: 1px solid rgba(77, 184, 255, 0.3);
  border-radius: 50%;
  animation: dotPulse 2.5s ease-out infinite;
}

.cover__dot::after {
  content: '';
  position: absolute;
  inset: 3px;
  background: var(--accent-cyan);
  border-radius: 50%;
}

.cover__dot--risk {
  border-color: var(--accent-lime);
}

.cover__dot--risk::before {
  border-color: rgba(200, 245, 53, 0.3);
}

.cover__dot--risk::after {
  background: var(--accent-lime);
}

@keyframes dotPulse {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(2.2); opacity: 0; }
}

.cover__content {
  position: relative;
  z-index: 5;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: calc(var(--header-h) + 3rem) clamp(1.25rem, 4vw, 3rem) 4rem;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 3rem;
  align-items: end;
}

.cover__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 1.5rem;
}

.cover__title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
}

.cover__desc {
  color: var(--text-muted);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  max-width: 48ch;
  line-height: 1.75;
  margin-bottom: 2.25rem;
}

.cover__action { min-width: 220px; }

/* Diagnostic Panel */
.diag-panel {
  background: var(--bg-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.diag-panel__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.diag-panel__status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.68rem;
}

.diag-panel__pulse {
  width: 6px;
  height: 6px;
  background: var(--accent-cyan);
  border-radius: 50%;
  animation: statusPulse 1.5s ease-in-out infinite;
}

@keyframes statusPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.diag-panel__time {
  color: var(--text-dim);
  font-size: 0.68rem;
}

.diag-panel__metric { margin-bottom: 1.25rem; }

.diag-panel__metric-top {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.diag-panel__label {
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.65rem;
}

.diag-panel__value {
  color: var(--accent-lime);
  font-weight: 500;
  font-size: 0.85rem;
}

.diag-panel__bar {
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 2px;
  overflow: hidden;
}

.diag-panel__fill {
  height: 100%;
  width: var(--w);
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
  border-radius: 2px;
  animation: barGrow 1.5s var(--ease) forwards;
  transform-origin: left;
}

@keyframes barGrow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.diag-panel__block { margin-bottom: 1rem; }

.diag-panel__zones {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.diag-panel__zones li {
  padding: 0.25rem 0.6rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--silver);
  font-size: 0.72rem;
}

.diag-panel__block--rec {
  padding: 0.75rem;
  background: var(--accent-lime-dim);
  border: 1px solid rgba(200, 245, 53, 0.15);
  border-radius: var(--radius-sm);
}

.diag-panel__rec {
  color: var(--text);
  margin-top: 0.35rem;
  font-size: 0.8rem;
  line-height: 1.5;
}

.diag-panel__footer {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
}

.cover__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.cover__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, var(--accent-cyan), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ===== DAMAGE SCENARIOS ===== */
.damage {
  padding: var(--section-pad) clamp(1.25rem, 4vw, 3rem);
  max-width: 1440px;
  margin: 0 auto;
}

.damage__header {
  margin-bottom: clamp(3rem, 6vw, 5rem);
  max-width: 600px;
}

.damage__list {
  display: flex;
  flex-direction: column;
  gap: clamp(3rem, 6vw, 6rem);
}

.scenario {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
}

.scenario--reverse {
  direction: rtl;
}

.scenario--reverse > * {
  direction: ltr;
}

.scenario__visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.scenario__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.scenario:hover .scenario__visual img {
  transform: scale(1.03);
}

.scenario__index {
  position: absolute;
  top: 1.25rem;
  left: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-cyan);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  padding: 0.35rem 0.7rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.scenario__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.scenario__text {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.scenario__solution {
  padding: 1.25rem;
  border-left: 2px solid var(--accent-lime);
  background: var(--accent-lime-dim);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.scenario__solution-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-lime);
  display: block;
  margin-bottom: 0.35rem;
}

.scenario__solution p {
  font-size: 0.9rem;
  color: var(--silver);
}

/* ===== SELECTOR ===== */
.selector {
  position: relative;
  padding: var(--section-pad) 0;
  background: var(--bg-graphite);
  overflow: hidden;
}

.selector__layout {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
  position: relative;
  z-index: 2;
}

.selector__tabs {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 2.5rem;
}

.selector__tab {
  text-align: left;
  padding: 1rem 1.25rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s var(--ease);
}

.selector__tab:hover,
.selector__tab:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.selector__tab.is-active {
  color: var(--text);
  background: var(--accent-cyan-dim);
  border-color: rgba(77, 184, 255, 0.25);
}

.selector__panel {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
}

.selector__panel.is-switching {
  opacity: 0;
  transform: translateY(8px);
}

.selector__panel-head {
  margin-bottom: 1rem;
}

.selector__panel-code {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
}

.selector__panel-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-top: 0.35rem;
  letter-spacing: -0.02em;
}

.selector__panel-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.selector__works {
  margin-bottom: 2rem;
}

.selector__works li {
  position: relative;
  padding: 0.55rem 0 0.55rem 1.25rem;
  font-size: 0.88rem;
  color: var(--silver);
  border-bottom: 1px solid var(--border);
}

.selector__works li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent-lime);
  font-size: 0.75rem;
}

.selector__meta {
  display: flex;
  gap: 2.5rem;
  margin-bottom: 1.75rem;
}

.selector__meta-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 0.25rem;
}

.selector__meta-value {
  font-size: 1rem;
  font-weight: 500;
}

.selector__meta-value--price {
  color: var(--accent-lime);
  font-family: var(--font-mono);
}

.selector__visual {
  position: relative;
  margin-top: -2rem;
  height: 280px;
  overflow: hidden;
}

.selector__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
  transition: opacity 0.5s var(--ease);
}

.selector__visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--bg-graphite) 0%, transparent 30%, var(--bg-graphite) 100%);
}

/* ===== COMPARE ===== */
.compare {
  padding: var(--section-pad) clamp(1.25rem, 4vw, 3rem);
  max-width: 1200px;
  margin: 0 auto;
}

.compare__header {
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
  text-align: center;
}

.compare__header .section-lead {
  margin-left: auto;
  margin-right: auto;
}

.compare__slider {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  cursor: col-resize;
  user-select: none;
  touch-action: none;
  border: 1px solid var(--border);
}

.compare__after,
.compare__before {
  position: absolute;
  inset: 0;
}

.compare__after img,
.compare__before img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  -webkit-user-drag: none;
  user-select: none;
}

.compare__before img {
  filter: saturate(0.55) brightness(0.82) contrast(0.92);
}

.compare__after img {
  filter: saturate(1.15) brightness(1.06) contrast(1.08);
}

.compare__before {
  z-index: 2;
  clip-path: inset(0 50% 0 0);
  transition: clip-path 0.05s linear;
}

.compare__badge {
  position: absolute;
  top: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  z-index: 3;
}

.compare__badge--before {
  left: 1.25rem;
  background: rgba(12, 14, 18, 0.8);
  color: var(--text-muted);
}

.compare__badge--after {
  right: 1.25rem;
  background: var(--accent-lime-dim);
  color: var(--accent-lime);
  border: 1px solid rgba(200, 245, 53, 0.2);
}

.compare__handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  width: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: col-resize;
}

.compare__handle-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--text);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.3);
}

.compare__handle-knob {
  position: relative;
  width: 44px;
  height: 44px;
  background: var(--bg-deep);
  border: 2px solid var(--text);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  transition: border-color 0.25s, box-shadow 0.25s;
}

.compare__handle:hover .compare__handle-knob,
.compare__handle:focus-visible .compare__handle-knob {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 20px rgba(77, 184, 255, 0.3);
}

.compare__stats {
  display: flex;
  justify-content: center;
  gap: clamp(2rem, 5vw, 4rem);
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.compare__stat {
  text-align: center;
}

.compare__stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 0.25rem;
}

.compare__stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ===== CASE STRIPS ===== */
.cases {
  padding: var(--section-pad) clamp(1.25rem, 4vw, 3rem);
  max-width: 1440px;
  margin: 0 auto;
}

.cases__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.cases__filters {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.cases__filter {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.25s var(--ease);
}

.cases__filter:hover,
.cases__filter:focus-visible {
  color: var(--text);
  border-color: var(--border-bright);
}

.cases__filter.is-active {
  background: var(--accent-cyan-dim);
  border-color: rgba(77, 184, 255, 0.3);
  color: var(--accent-cyan);
}

.cases__list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.case-strip {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 0;
  background: var(--bg-graphite);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}

.case-strip.is-hidden {
  display: none;
}

.case-strip--alt {
  grid-template-columns: 1fr 1.4fr;
}

.case-strip--alt .case-strip__media {
  order: 2;
}

.case-strip__media {
  position: relative;
  min-height: 280px;
  overflow: hidden;
}

.case-strip__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.case-strip:hover .case-strip__media img {
  transform: scale(1.04);
}

.case-strip__info {
  padding: clamp(1.5rem, 3vw, 2.5rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-strip__tags {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.case-strip__tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--silver);
}

.case-strip__car {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  font-weight: 700;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.case-strip__details div {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 0.5rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

.case-strip__details div:last-child { border-bottom: none; }

.case-strip__details dt {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.case-strip__details dd {
  color: var(--silver);
}

/* ===== PROTOCOL ===== */
.protocol {
  padding: var(--section-pad) clamp(1.25rem, 4vw, 3rem);
  background: var(--bg-graphite);
}

.protocol__layout {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 5rem);
}

.protocol__img {
  margin-top: 2.5rem;
  border-radius: var(--radius-md);
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: 0.7;
}

.protocol__steps {
  display: flex;
  flex-direction: column;
}

.protocol__step {
  position: relative;
  padding: 1.75rem 0 1.75rem 2rem;
  border-bottom: 1px solid var(--border);
  transition: padding-left 0.3s var(--ease);
}

.protocol__step:first-child { padding-top: 0; }

.protocol__step::before {
  content: '';
  position: absolute;
  left: 0;
  top: 2rem;
  width: 6px;
  height: 6px;
  background: var(--accent-cyan);
  border-radius: 50%;
  transition: box-shadow 0.3s;
}

.protocol__step:hover {
  padding-left: 2.5rem;
}

.protocol__step:hover::before {
  box-shadow: 0 0 12px var(--accent-cyan);
}

.protocol__step-code {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--accent-cyan);
  display: block;
  margin-bottom: 0.4rem;
}

.protocol__step-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.protocol__step-text {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.65;
  max-width: 50ch;
}

/* ===== BOOKING ===== */
.booking {
  padding: var(--section-pad) clamp(1.25rem, 4vw, 3rem);
}

.booking__layout {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: start;
}

.booking__benefits {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.booking__benefits li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.92rem;
  color: var(--silver);
}

.booking__benefit-icon {
  color: var(--accent-lime);
  font-size: 0.8rem;
  margin-top: 0.15rem;
}

.booking__contact {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.booking__contact a {
  display: block;
  margin-top: 0.35rem;
  color: var(--text);
  font-family: var(--font-mono);
  transition: color 0.25s;
}

.booking__contact a:hover,
.booking__contact a:focus-visible { color: var(--accent-cyan); }

.booking__form-wrap {
  background: var(--bg-graphite);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.45rem;
}

.form-optional {
  color: var(--text-dim);
  font-size: 0.75rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px var(--accent-cyan-dim);
}

.form-group input.is-error,
.form-group select.is-error {
  border-color: #ff5c5c;
}

.form-error {
  display: block;
  font-size: 0.75rem;
  color: #ff5c5c;
  margin-top: 0.35rem;
  min-height: 1rem;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%236e7a8c' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.booking__success {
  text-align: center;
  padding: 2rem 1rem;
}

.booking__success-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-lime-dim);
  border: 1px solid rgba(200, 245, 53, 0.25);
  border-radius: 50%;
  font-size: 1.5rem;
  color: var(--accent-lime);
}

.booking__success h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.booking__success p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ===== FOOTER ===== */
.footer {
  padding: 2.5rem clamp(1.25rem, 4vw, 3rem);
  border-top: 1px solid var(--border);
}

.footer__inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
}

.footer__brand p {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

.footer__copy {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .cover__content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .diag-panel { max-width: 420px; }

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

  .selector__tabs {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .selector__tab {
    flex: 1 1 auto;
    min-width: 140px;
    text-align: center;
    padding: 0.75rem 1rem;
    font-size: 0.82rem;
  }

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

  .protocol__img { display: none; }

  .case-strip,
  .case-strip--alt {
    grid-template-columns: 1fr;
  }

  .case-strip--alt .case-strip__media { order: 0; }

  .case-strip__media { min-height: 220px; }
}

@media (max-width: 768px) {
  .header__nav,
  .header__cta { display: none; }

  .header__burger { display: flex; }

  .cover__scroll { display: none; }

  .scenario,
  .scenario--reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }

  .scenario__visual { aspect-ratio: 16 / 10; }

  .compare__stats {
    flex-direction: column;
    gap: 1.25rem;
  }

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

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

  .selector__meta {
    flex-direction: column;
    gap: 1rem;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .selector__tabs {
    flex-direction: column;
  }

  .selector__tab {
    text-align: left;
  }

  .diag-panel {
    max-width: 100%;
    padding: 1.15rem;
  }

  .case-strip__details div {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }
}