/* ══════════════════════════════════════════════════
   REINVENTED WORKS — PRODUCT PAGE
   Palette: Dark BG #12 1214, Teal accent #01696F / #00AECF
   Fonts: Switzer (display) + Satoshi (body)
══════════════════════════════════════════════════ */

/* ── Design Tokens ── */
:root {
  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgb(0 0 0 / 0.08);
  --shadow-md: 0 4px 16px rgb(0 0 0 / 0.10);
  --shadow-lg: 0 12px 40px rgb(0 0 0 / 0.14);

  /* Content widths */
  --content-narrow:  640px;
  --content-default: 980px;
  --content-wide:   1200px;

  /* Fonts */
  --font-display: 'Switzer', 'Helvetica Neue', sans-serif;
  --font-body:    'Satoshi', 'Inter', sans-serif;
}

/* ── Light Mode ── */
:root, [data-theme="light"] {
  --color-bg:          #F7F6F2;
  --color-surface:     #FFFFFF;
  --color-surface-2:   #F3F0EC;
  --color-border:      #E0DDD7;
  --color-text:        #12120E;
  --color-text-muted:  #6B6A65;
  --color-text-faint:  #AEADA8;
  --color-accent:      #01696F;
  --color-accent-2:    #00AECF;
  --color-accent-glow: rgba(0, 174, 207, 0.12);
  --color-accent-hover:#0C4E54;
  --color-warn-surface:#FFF7F0;
  --color-warn-border: #F5CCA8;
  --color-warn-text:   #7A3400;
  --color-primary-highlight: #D0E8E8;
  --header-bg:         rgba(247, 246, 242, 0.9);
}

/* ── Dark Mode ── */
[data-theme="dark"] {
  --color-bg:          #12120E;
  --color-surface:     #1A1A16;
  --color-surface-2:   #222220;
  --color-border:      #333330;
  --color-text:        #E8E7E3;
  --color-text-muted:  #8A8980;
  --color-text-faint:  #55544F;
  --color-accent:      #4FA8B4;
  --color-accent-2:    #00C8EF;
  --color-accent-glow: rgba(0, 200, 239, 0.10);
  --color-accent-hover:#63BEC8;
  --color-warn-surface:#1F1500;
  --color-warn-border: #5A3A10;
  --color-warn-text:   #F5A05A;
  --color-primary-highlight: #1A3538;
  --header-bg:         rgba(18, 18, 14, 0.92);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:          #12120E;
    --color-surface:     #1A1A16;
    --color-surface-2:   #222220;
    --color-border:      #333330;
    --color-text:        #E8E7E3;
    --color-text-muted:  #8A8980;
    --color-text-faint:  #55544F;
    --color-accent:      #4FA8B4;
    --color-accent-2:    #00C8EF;
    --color-accent-glow: rgba(0, 200, 239, 0.10);
    --color-accent-hover:#63BEC8;
    --color-warn-surface:#1F1500;
    --color-warn-border: #5A3A10;
    --color-warn-text:   #F5A05A;
    --color-primary-highlight: #1A3538;
    --header-bg:         rgba(18, 18, 14, 0.92);
  }
}

/* ── Base Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  min-height: 100dvh;
}
img, picture, svg { display: block; max-width: 100%; height: auto; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.15; text-wrap: balance; }
p, li { text-wrap: pretty; max-width: 70ch; }
button { cursor: pointer; background: none; border: none; font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ol, ul { list-style: none; }

a, button, [role="button"], input {
  transition: color var(--transition), background var(--transition),
    border-color var(--transition), box-shadow var(--transition), opacity var(--transition);
}
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
::selection {
  background: var(--color-accent-glow);
  color: var(--color-text);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border-width: 0;
}

/* ── Layout Helpers ── */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-16));
}

/* ══════════════════════════════════════════════════
   BUTTONS
══════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.6em 1.4em;
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover { background: var(--color-accent-hover); }
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-surface);
  border-color: var(--color-text-muted);
}
.btn-lg {
  font-size: var(--text-base);
  padding: 0.75em 1.8em;
}

/* ══════════════════════════════════════════════════
   HEADER
══════════════════════════════════════════════════ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}
.header--scrolled { box-shadow: var(--shadow-md); }
.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  height: 64px;
}

/* Logo */
.logo-link { display: flex; align-items: center; flex-shrink: 0; }
.logo-svg {
  width: auto;
  height: 32px;
  color: var(--color-text);
}

/* Nav */
.nav {
  display: flex;
  gap: var(--space-1);
  margin-left: var(--space-4);
}
.nav-link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
}
.nav-link:hover { color: var(--color-text); background: var(--color-surface-2); }

/* Header actions */
.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}
.theme-toggle:hover { background: var(--color-surface-2); color: var(--color-text); }

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-6) var(--space-6);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}
.mobile-nav.is-open { display: flex; }
.mobile-nav-link {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
}
.mobile-nav-link:hover { color: var(--color-text); background: var(--color-surface-2); }
.mobile-cta { margin-top: var(--space-4); align-self: flex-start; }

/* ══════════════════════════════════════════════════
   SECTION LABELS & HEADERS
══════════════════════════════════════════════════ */
.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-2);
  margin-bottom: var(--space-3);
}
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.1;
  margin-bottom: var(--space-4);
}
.section-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
}
.section-header { margin-bottom: var(--space-12); }
.section-header--center { text-align: center; }
.section-header--center .section-subtitle { margin-inline: auto; }

/* ══════════════════════════════════════════════════
   HERO
══════════════════════════════════════════════════ */
.hero {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
.hero-content { max-width: 560px; }

.hero-eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-2);
  margin-bottom: var(--space-4);
}
.hero-headline {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  line-height: 1.05;
  color: var(--color-text);
  margin-bottom: var(--space-5);
}
.hero-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3em 0.85em;
  background: var(--color-primary-highlight);
  color: var(--color-accent);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Logo image replacement (used in header) */
.logo-img {
  height: 32px;
  width: auto;
  display: block;
}

@media (min-width: 900px) {
  .logo-img { height: 36px; }
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

/* Hero image */
.hero-image-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-image-glow {
  position: absolute;
  inset: 10%;
  background: radial-gradient(ellipse, var(--color-accent-glow) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
  filter: blur(32px);
}
.hero-image {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 520px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

/* ══════════════════════════════════════════════════
   PROBLEM STRIP
══════════════════════════════════════════════════ */
.problem-strip {
  background: var(--color-surface);
  border-block: 1px solid var(--color-border);
  padding-block: clamp(var(--space-12), 7vw, var(--space-24));
}
.problem-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
.problem-headline {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: 1.2;
}
.problem-headline em { color: var(--color-accent-2); font-style: normal; }
.problem-body { font-size: var(--text-base); color: var(--color-text-muted); line-height: 1.7; }
.problem-image-wrap { border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-md); }
.problem-image { width: 100%; aspect-ratio: 1; object-fit: cover; }

/* ══════════════════════════════════════════════════
   DESIGN / FEATURES
══════════════════════════════════════════════════ */
.design-section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 1.5vw, 1.25rem);
  margin-bottom: var(--space-16);
  align-items: stretch;
}
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.25rem, 2vw, 1.75rem);
  min-height: 250px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}
.feature-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}
.feature-card--large {
  grid-column: span 2;
  background: var(--color-primary-highlight);
  border-color: transparent;
  min-height: 280px;
}
.feature-card--wide {
  grid-column: span 3;
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
  min-height: 220px;
}
.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--color-accent-glow);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
  flex-shrink: 0;
}
.feature-card--wide .feature-icon { margin-bottom: 0; }
.feature-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.feature-desc { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.65; }

.design-image-row {
  margin-top: var(--space-8);
}
.design-carousel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, var(--color-surface), var(--color-surface-2));
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}
.design-carousel__viewport {
  overflow: hidden;
  border-radius: var(--radius-lg);
}
.design-carousel__track {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -ms-overflow-style: none;
  scrollbar-width: none;
  touch-action: pan-x;
  padding-bottom: var(--space-2);
}
.design-carousel__track::-webkit-scrollbar { display: none; }
.design-carousel__slide {
  flex: 0 0 clamp(280px, 38vw, 420px);
  min-height: 320px;
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: linear-gradient(135deg, var(--color-accent-glow), rgba(255,255,255,0.36));
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.45);
  scroll-snap-align: start;
  display: flex;
  align-items: flex-start;
}
.design-carousel__content {
  width: 100%;
  max-width: 28rem;
}
.design-carousel__eyebrow {
  display: inline-block;
  margin-bottom: var(--space-3);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.design-carousel__content .feature-title {
  margin-bottom: var(--space-3);
}
.design-carousel__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-5);
}
.design-carousel__button {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.design-carousel__button:hover {
  background: var(--color-surface-2);
  border-color: var(--color-accent);
}
.design-carousel__dots {
  display: flex;
  gap: var(--space-2);
}
.design-carousel__dot {
  width: 10px;
  height: 10px;
  border: 0;
  border-radius: 999px;
  background: var(--color-border);
  padding: 0;
}
.design-carousel__dot.is-active {
  background: var(--color-accent);
  transform: scale(1.15);
}

/* ══════════════════════════════════════════════════
   COMPATIBILITY
══════════════════════════════════════════════════ */
.how-section {
  background: var(--color-surface);
  border-block: 1px solid var(--color-border);
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}
.compat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}
.compat-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}
.compat-card--primary {
  grid-column: span 2;
  background: var(--color-primary-highlight);
  border-color: var(--color-accent);
}
.compat-card--warning {
  grid-column: span 2;
  background: var(--color-warn-surface);
  border-color: var(--color-warn-border);
}
.compat-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}
.compat-label--warning { color: var(--color-warn-text); }
.compat-brand {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.compat-models { font-size: var(--text-xs); color: var(--color-text-muted); margin-bottom: var(--space-3); }
.compat-note { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; }
.compat-card--warning .compat-brand { color: var(--color-warn-text); }

.sizing-image-wrap {
  border-radius: var(--radius-xl);
  overflow: hidden;
  max-width: 800px;
  margin-inline: auto;
  box-shadow: var(--shadow-md);
}
.sizing-image { width: 100%; aspect-ratio: 1; object-fit: cover; }

/* ══════════════════════════════════════════════════
   INSTALL
══════════════════════════════════════════════════ */
.install-section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}
.install-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}
.install-intro {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-10);
  line-height: 1.7;
}
.install-intro em { color: var(--color-text); font-style: normal; font-weight: 600; }

.steps-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.step {
  display: flex;
  gap: var(--space-5);
  padding: var(--space-5) var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition);
}
.step:hover {
  background: var(--color-surface);
  border-color: var(--color-border);
}
.step--highlight {
  background: var(--color-primary-highlight);
  border-color: var(--color-accent);
}
.step--highlight:hover { background: var(--color-primary-highlight); }
.step-num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 800;
  color: var(--color-accent);
  min-width: 28px;
  padding-top: 2px;
  letter-spacing: 0.05em;
}
.step-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.step-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}
.step-desc strong { color: var(--color-text); }

.remove-tip {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-top: var(--space-8);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
}
.remove-tip svg { flex-shrink: 0; margin-top: 1px; color: var(--color-accent-2); }
.remove-tip strong { color: var(--color-text); }

.install-image-wrap {
  position: sticky;
  top: 88px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.install-image { width: 100%; aspect-ratio: 1; object-fit: cover; }

/* ══════════════════════════════════════════════════
   GALLERY
══════════════════════════════════════════════════ */
.gallery-section {
  background: var(--color-surface);
  border-block: 1px solid var(--color-border);
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 320px;
  gap: var(--space-3);
}
.gallery-item {
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}
.gallery-item--tall { grid-row: span 2; }
.gallery-item--wide { grid-column: span 2; }
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.gallery-item:hover img { transform: scale(1.04); }
.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.55) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: var(--space-5);
  opacity: 0;
  transition: opacity var(--transition);
}
.gallery-item:hover .gallery-overlay { opacity: 1; }
.gallery-overlay span {
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
}

/* ══════════════════════════════════════════════════
   FAQ
══════════════════════════════════════════════════ */
.faq-section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}
.faq-inner {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-16);
  align-items: start;
}
.faq-header {
  position: sticky;
  top: 88px;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  transition: border-color var(--transition);
}
.faq-item[open] { border-color: var(--color-accent); }
.faq-question {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  user-select: none;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question:hover { color: var(--color-accent); }
.faq-item[open] .faq-question { color: var(--color-accent); }
.faq-chevron {
  flex-shrink: 0;
  color: var(--color-text-faint);
  transition: transform var(--transition);
}
.faq-item[open] .faq-chevron { transform: rotate(180deg); color: var(--color-accent); }
.faq-answer {
  padding: 0 var(--space-6) var(--space-6);
  border-top: 1px solid var(--color-border);
}
.faq-answer p {
  padding-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ══════════════════════════════════════════════════
   CTA BANNER
══════════════════════════════════════════════════ */
.cta-section {
  background: var(--color-accent);
  padding-block: clamp(var(--space-12), 7vw, var(--space-20));
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
}
.cta-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-2);
}
.cta-body { font-size: var(--text-base); color: rgba(255,255,255,0.8); }
.cta-section .btn-primary {
  background: #fff;
  color: var(--color-accent);
  flex-shrink: 0;
}
.cta-section .btn-primary:hover { background: rgba(255,255,255,0.9); }

/* ══════════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════ */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-12);
}
.footer-inner {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex-wrap: wrap;
}
.footer-brandname {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.footer-tagline {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.footer-nav {
  margin-left: auto;
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-nav a:hover { color: var(--color-text); }
.footer-legal {
  width: 100%;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-6);
}

/* ══════════════════════════════════════════════════
   SCROLL ANIMATIONS
══════════════════════════════════════════════════ */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s cubic-bezier(0.16,1,0.3,1), transform 0.55s cubic-bezier(0.16,1,0.3,1);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ══════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════ */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: var(--space-12); }
  .hero-content { max-width: 100%; }
  .hero-image { max-width: 420px; margin-inline: auto; }

  .problem-inner { grid-template-columns: 1fr; gap: var(--space-10); }

  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
  .feature-card--large { grid-column: span 2; }
  .feature-card--wide { grid-column: span 2; }

  .compat-grid { grid-template-columns: 1fr 1fr; }
  .compat-card--primary { grid-column: span 2; }
  .compat-card--warning { grid-column: span 2; }

  .install-inner { grid-template-columns: 1fr; gap: var(--space-10); }
  .install-image-wrap { position: static; }

  .faq-inner { grid-template-columns: 1fr; gap: var(--space-8); }
  .faq-header { position: static; }

  .gallery-grid { grid-template-columns: 1fr 1fr; grid-auto-rows: 240px; }
  .gallery-item--tall { grid-row: span 1; }
  .gallery-item--wide { grid-column: span 2; }

  .design-carousel__slide {
    flex-basis: clamp(260px, 70vw, 360px);
    min-height: 300px;
  }
}

@media (max-width: 680px) {
  .nav { display: none; }
  .header-actions .btn { display: none; }
  .menu-toggle { display: flex; }

  .hero-headline { font-size: clamp(2.2rem, 8vw, 3rem); }

  .features-grid { grid-template-columns: 1fr; }
  .feature-card--large { grid-column: span 1; }
  .feature-card--wide { grid-column: span 1; flex-direction: column; }

  .compat-grid { grid-template-columns: 1fr; }
  .compat-card--primary { grid-column: span 1; }
  .compat-card--warning { grid-column: span 1; }

  .design-carousel__slide {
    flex-basis: 84vw;
    min-height: 280px;
  }
  .design-carousel__controls {
    gap: var(--space-2);
    flex-wrap: wrap;
  }

  .gallery-grid { grid-template-columns: 1fr; grid-auto-rows: 260px; }
  .gallery-item--tall,
  .gallery-item--wide { grid-row: span 1; grid-column: span 1; }

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

  .footer-inner { flex-direction: column; align-items: flex-start; gap: var(--space-4); }
  .footer-nav { margin-left: 0; }
}

/* ── Logo wordmark ── */
.logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  flex-shrink: 0;
}
.logo-mark {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.logo-text {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.logo-text strong {
  font-weight: 800;
}