:root {
  --bg-primary: #0d0f14;
  --bg-secondary: #12151c;
  --bg-card: #161b24;
  --bg-card-hover: #1c2230;
  --bg-dark-alt: #0a0c10;
  --text-primary: #e8edf5;
  --text-secondary: #8e9ab5;
  --text-muted: #5a6580;
  --accent-cyan: #00d4ff;
  --accent-cyan-dim: rgba(0, 212, 255, 0.15);
  --accent-cyan-glow: rgba(0, 212, 255, 0.4);
  --accent-violet: #7c3aed;
  --accent-violet-dim: rgba(124, 58, 237, 0.15);
  --accent-violet-glow: rgba(124, 58, 237, 0.4);
  --accent-teal: #06b6d4;
  --gradient-main: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
  --gradient-card: linear-gradient(135deg, rgba(0,212,255,0.08) 0%, rgba(124,58,237,0.08) 100%);
  --border-subtle: rgba(255,255,255,0.06);
  --border-accent: rgba(0,212,255,0.25);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4), 0 1px 0 rgba(255,255,255,0.04) inset;
  --shadow-glow-cyan: 0 0 40px rgba(0,212,255,0.2), 0 0 80px rgba(0,212,255,0.08);
  --shadow-glow-violet: 0 0 40px rgba(124,58,237,0.2), 0 0 80px rgba(124,58,237,0.08);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  --space-xs: clamp(0.5rem, 1vw, 0.75rem);
  --space-sm: clamp(0.75rem, 1.5vw, 1rem);
  --space-md: clamp(1rem, 2vw, 1.5rem);
  --space-lg: clamp(1.5rem, 3vw, 2.5rem);
  --space-xl: clamp(2.5rem, 5vw, 5rem);
  --space-2xl: clamp(4rem, 8vw, 8rem);
  --nav-h: 72px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: clamp(0.9rem, 1.5vw, 1rem);
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.footer { margin-top: auto; }

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

a { color: var(--accent-cyan); text-decoration: none; transition: color 0.25s ease, opacity 0.25s ease; }
a:hover { color: #fff; }

h1, h2, h3, h4, h5, h6 {
  font-family: 'Sora', sans-serif;
  line-height: 1.2;
  color: var(--text-primary);
}

p { color: var(--text-secondary); margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

ul, ol { padding-left: 1.5em; }
li { margin-bottom: 0.4em; }

#progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: var(--gradient-main);
  z-index: 9999;
  transition: width 0.1s linear;
  box-shadow: 0 0 12px var(--accent-cyan-glow);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
}

.section {
  padding: var(--space-2xl) 0;
}

.bg-dark-alt { background-color: var(--bg-dark-alt); }

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-tag {
  display: inline-block;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: var(--accent-cyan-dim);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-full);
  padding: 0.35em 1em;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-desc {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  background: var(--gradient-main);
  color: #fff;
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.8em 1.8em;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, opacity 0.25s ease;
  box-shadow: 0 4px 20px var(--accent-cyan-glow);
  text-decoration: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-cyan-glow), 0 0 60px rgba(0,212,255,0.15);
  color: #fff;
  opacity: 0.95;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  background: transparent;
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.8em 1.8em;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: border-color 0.25s ease, color 0.25s ease, background 0.25s ease;
  text-decoration: none;
}

.btn-ghost:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: var(--accent-cyan-dim);
}

.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  background: rgba(13,15,20,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.navbar.scrolled {
  background: rgba(13,15,20,0.97);
  box-shadow: 0 4px 32px rgba(0,0,0,0.5);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-img { width: 32px; height: 32px; }

.logo-text {
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  gap: clamp(1rem, 2.5vw, 2rem);
  align-items: center;
}

.nav-link {
  font-family: 'DM Sans', sans-serif;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.25s ease;
  position: relative;
  padding-bottom: 2px;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--gradient-main);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 1100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-menu-overlay.active { opacity: 1; pointer-events: all; }

.mobile-menu {
  position: fixed;
  top: 0; right: -100%;
  width: min(320px, 85vw);
  height: 100vh;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-subtle);
  z-index: 1200;
  padding: 2rem 1.5rem;
  transition: right 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  overflow-y: auto;
}

.mobile-menu.active { right: 0; }

.mobile-menu-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 1rem;
  cursor: pointer;
  margin-bottom: 2rem;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.mobile-menu-close:hover { background: var(--bg-card-hover); border-color: var(--accent-cyan); }

.mobile-nav-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-nav-links a {
  display: block;
  padding: 0.85rem 1rem;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 1rem;
  border-radius: var(--radius-md);
  transition: background 0.2s ease, color 0.2s ease;
}

.mobile-nav-links a:hover {
  background: var(--bg-card);
  color: var(--accent-cyan);
}

.hero {
  min-height: 100vh;
  padding-top: calc(var(--nav-h) + var(--space-xl));
  padding-bottom: var(--space-2xl);
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  overflow: hidden;
}

@media (min-width: 900px) {
  .hero {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

.hero-bg-glow {
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,212,255,0.12) 0%, transparent 70%);
  top: -100px; left: -200px;
  pointer-events: none;
  filter: blur(40px);
}

.hero-bg-glow--2 {
  background: radial-gradient(circle, rgba(124,58,237,0.1) 0%, transparent 70%);
  top: auto; bottom: -100px; left: auto; right: -200px;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  background: var(--accent-cyan-dim);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-full);
  padding: 0.4em 1.1em;
  margin-bottom: 1.5rem;
}

.hero-badge i { font-size: 0.6rem; animation: pulse-dot 2s infinite; }

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-title {
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
  min-width: 80px;
}

.step-icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 0.6rem;
  box-shadow: 0 0 20px var(--accent-cyan-glow);
}

.step-label {
  font-family: 'Sora', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.step-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.step-connector {
  flex: 0 0 auto;
  width: clamp(20px, 4vw, 40px);
  height: 2px;
  background: var(--gradient-main);
  margin-top: 23px;
  opacity: 0.5;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.hero-image-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.hero-image-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(0,212,255,0.15) 0%, transparent 70%);
  filter: blur(30px);
  pointer-events: none;
}

.hero-img {
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 80px rgba(0,0,0,0.6), 0 0 0 1px var(--border-subtle), var(--shadow-glow-cyan);
  object-fit: cover;
  aspect-ratio: 4/3;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  grid-auto-rows: auto;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .bento-grid {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: auto auto;
  }
  .bento-card--large { grid-column: span 2; grid-row: span 2; }
  .bento-card--tall { grid-row: span 2; }
  .bento-card--wide { grid-column: span 2; }
}

.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  box-shadow: var(--shadow-card);
}

.bento-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
}

.bento-card--accent {
  background: var(--gradient-card);
  border-color: var(--border-accent);
}

.bento-card-img {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.bento-card--large .bento-card-img { aspect-ratio: 16/7; }
.bento-card--tall .bento-card-img { aspect-ratio: 4/3; }

.bento-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.bento-card:hover .bento-card-img img { transform: scale(1.05); }

.bento-card-img--side {
  aspect-ratio: auto;
  height: 100%;
  flex-shrink: 0;
}

.bento-card--wide .bento-card-content { display: flex; flex-direction: column; justify-content: center; }

.bento-card-content { padding: 1.5rem; }

.bento-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  background: var(--accent-cyan-dim);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.bento-card-content h3 {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.bento-card-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.bento-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  transition: gap 0.2s ease;
}

.bento-link:hover { gap: 0.7em; color: var(--accent-cyan); }

.methods-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.method-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.method-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-main);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.method-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-card), 0 8px 32px rgba(0,212,255,0.1);
  transform: translateY(-3px);
}

.method-card:hover::before { transform: scaleX(1); }

.method-num {
  font-family: 'Sora', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--border-subtle);
  line-height: 1;
  margin-bottom: 0.5rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.4;
}

.method-icon {
  font-size: 1.5rem;
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
}

.method-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.method-card p { font-size: 0.9rem; margin-bottom: 1rem; }

.method-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25em 0.75em;
  border-radius: var(--radius-full);
  background: var(--accent-cyan-dim);
  color: var(--accent-cyan);
  border: 1px solid var(--border-accent);
}

.tag--warn {
  background: rgba(239,68,68,0.1);
  color: #f87171;
  border-color: rgba(239,68,68,0.3);
}

.coatings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.coating-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  box-shadow: var(--shadow-card);
}

.coating-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
  border-color: var(--border-accent);
}

.coating-card--featured {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-card), 0 0 30px rgba(0,212,255,0.1);
}

.coating-header {
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.coating-header--silver { background: linear-gradient(135deg, rgba(192,192,192,0.15) 0%, rgba(150,150,180,0.08) 100%); }
.coating-header--aluminium { background: linear-gradient(135deg, rgba(0,212,255,0.12) 0%, rgba(6,182,212,0.06) 100%); }
.coating-header--titanium { background: linear-gradient(135deg, rgba(124,58,237,0.15) 0%, rgba(99,102,241,0.08) 100%); }

.coating-header--silver .coating-icon { color: #c0c0c8; }
.coating-header--aluminium .coating-icon { color: var(--accent-cyan); }
.coating-header--titanium .coating-icon { color: #a78bfa; }

.coating-icon { font-size: 1.2rem; }
.coating-header h3 { font-size: 1.1rem; font-weight: 600; flex: 1; }

.coating-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2em 0.7em;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.08);
  color: var(--text-secondary);
}

.coating-body { padding: 1.5rem; }

.coating-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.88rem;
}

.coating-row:last-of-type { border-bottom: none; }
.coating-label { color: var(--text-muted); }
.coating-val { color: var(--text-primary); font-weight: 500; }

.rating-dots { display: flex; gap: 4px; }
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border-subtle);
  border: 1px solid var(--text-muted);
}
.dot.active { background: var(--accent-cyan); border-color: var(--accent-cyan); box-shadow: 0 0 6px var(--accent-cyan); }

.coating-list {
  list-style: none;
  padding: 0;
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.coating-list li {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.coating-list .fa-plus { color: #4ade80; font-size: 0.7rem; }
.coating-list .fa-minus { color: #f87171; font-size: 0.7rem; }

.diy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.diy-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  box-shadow: var(--shadow-card);
}

.diy-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
}

.diy-img-wrap {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.diy-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.diy-card:hover .diy-img-wrap img { transform: scale(1.05); }

.diy-difficulty {
  position: absolute;
  top: 0.75rem; right: 0.75rem;
  background: rgba(0,212,255,0.9);
  color: #0d0f14;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25em 0.75em;
  border-radius: var(--radius-full);
}

.diy-difficulty--easy { background: rgba(74,222,128,0.9); }
.diy-difficulty--hard { background: rgba(248,113,113,0.9); }

.diy-content { padding: 1.5rem; }

.diy-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  background: var(--accent-cyan-dim);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.diy-content h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 0.5rem; }
.diy-content p { font-size: 0.88rem; margin-bottom: 1rem; }

.diy-steps-preview {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.diy-steps-preview span {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.diy-steps-preview .fa-circle-check { color: var(--accent-cyan); font-size: 0.75rem; }

.calculator-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  box-shadow: var(--shadow-card);
}

@media (min-width: 768px) {
  .calculator-wrap { grid-template-columns: 1fr 1fr; }
}

.calculator-form { display: flex; flex-direction: column; gap: 1.25rem; }

.calc-group { display: flex; flex-direction: column; gap: 0.4rem; }

.calc-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.calc-input {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  width: 100%;
  appearance: none;
}

.calc-input:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px var(--accent-cyan-dim);
}

.calc-select { cursor: pointer; }

.calc-btn { margin-top: 0.5rem; }

.calculator-result {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
}

.result-placeholder {
  text-align: center;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.result-placeholder i { font-size: 3rem; opacity: 0.3; }
.result-placeholder p { font-size: 0.9rem; }

.result-content { width: 100%; }
.result-title { font-size: 1.2rem; margin-bottom: 1.25rem; color: var(--accent-cyan); }

.result-size {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: 'Sora', sans-serif;
  color: var(--text-primary);
  margin-bottom: 1rem;
  padding: 1rem;
  background: var(--accent-cyan-dim);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  text-align: center;
}

.result-tips {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.result-tip {
  display: flex;
  align-items: flex-start;
  gap: 0.6em;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.result-tip i { color: var(--accent-cyan); margin-top: 0.15em; flex-shrink: 0; }

.restoration-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .restoration-grid { grid-template-columns: 1fr 1fr; }
}

.restoration-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.restoration-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-accent);
}

.restoration-img {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.restoration-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.restoration-card:hover .restoration-img img { transform: scale(1.04); }

.restoration-content { padding: 1.75rem; }

.restoration-type {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  background: var(--accent-cyan-dim);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-full);
  padding: 0.2em 0.8em;
  margin-bottom: 0.75rem;
}

.restoration-content h3 { font-size: 1.1rem; margin-bottom: 0.6rem; }
.restoration-content p { font-size: 0.9rem; margin-bottom: 1rem; }

.restoration-steps {
  list-style: none;
  padding: 0;
  counter-reset: steps;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.restoration-steps li {
  counter-increment: steps;
  display: flex;
  align-items: flex-start;
  gap: 0.75em;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.restoration-steps li::before {
  content: counter(steps);
  flex-shrink: 0;
  width: 22px; height: 22px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  margin-top: 0.1em;
}

.tips-inner {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: clamp(2rem, 5vw, 3.5rem);
  box-shadow: var(--shadow-card);
}

.tips-header { margin-bottom: 2rem; }

.tips-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 600px) { .tips-list { grid-template-columns: 1fr 1fr; } }

.tip-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.tip-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: var(--accent-cyan-dim);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1rem;
  flex-shrink: 0;
}

.tip-text strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
  font-family: 'Sora', sans-serif;
}

.tip-text p { font-size: 0.88rem; margin: 0; }

.footer-cta-block {
  background: linear-gradient(135deg, rgba(0,212,255,0.08) 0%, rgba(124,58,237,0.08) 100%);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: clamp(3rem, 8vw, 6rem) 0;
}

.footer-cta-inner {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.footer-cta-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.footer-cta-desc {
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.footer-main {
  background: var(--bg-dark-alt);
  padding: clamp(3rem, 6vw, 5rem) 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (min-width: 600px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-primary);
  text-decoration: none;
  margin-bottom: 1rem;
  font-family: 'Sora', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
}

.footer-brand-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.footer-contact-info { display: flex; flex-direction: column; gap: 0.6rem; }

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6em;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.footer-contact-item i { color: var(--accent-cyan); margin-top: 0.15em; flex-shrink: 0; font-size: 0.8rem; }
.footer-contact-item a { color: var(--text-secondary); transition: color 0.25s ease; }
.footer-contact-item a:hover { color: var(--accent-cyan); }

.footer-col-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color 0.25s ease;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer-bottom p { font-size: 0.82rem; color: var(--text-muted); margin: 0; }
.footer-domain { font-size: 0.78rem; color: var(--text-muted); opacity: 0.6; }

.page-hero {
  padding-top: calc(var(--nav-h) + var(--space-2xl));
  padding-bottom: var(--space-xl);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 400px;
  background: radial-gradient(ellipse at center top, rgba(0,212,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero-content { text-align: center; max-width: 700px; margin: 0 auto; }
.page-hero-title { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; margin-bottom: 1rem; }
.page-hero-desc { font-size: clamp(1rem, 1.8vw, 1.15rem); color: var(--text-secondary); }

.page-hero--compact {
  padding-top: calc(var(--nav-h) + var(--space-xl));
  padding-bottom: var(--space-lg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 768px) { .about-grid { grid-template-columns: 1fr 1fr; } }

.about-text h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 1.25rem; }
.about-text p { font-size: 0.95rem; line-height: 1.8; }

.about-img-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.about-img-wrap img {
  width: 100%;
  border-radius: var(--radius-xl);
  aspect-ratio: 4/3;
  object-fit: cover;
  box-shadow: var(--shadow-card);
}

.about-img-badge {
  position: absolute;
  bottom: 1.5rem; left: 1.5rem;
  background: rgba(13,15,20,0.9);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-full);
  padding: 0.5em 1.2em;
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  backdrop-filter: blur(10px);
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}

.principle-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  box-shadow: var(--shadow-card);
}

.principle-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-card), 0 8px 24px rgba(0,212,255,0.1);
}

.principle-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: 1rem;
  box-shadow: 0 4px 16px var(--accent-cyan-glow);
}

.principle-card h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.principle-card p { font-size: 0.88rem; }

.content-areas { display: flex; flex-direction: column; gap: 0; }

.content-area-item {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.content-area-item:last-child { border-bottom: none; }

.content-area-num {
  font-family: 'Sora', sans-serif;
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  flex-shrink: 0;
  opacity: 0.6;
}

.content-area-body h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.content-area-body p { font-size: 0.92rem; }

.cleaning-tabs { background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: var(--radius-xl); overflow: hidden; }

.tab-nav {
  display: flex;
  border-bottom: 1px solid var(--border-subtle);
  overflow-x: auto;
  scrollbar-width: none;
}

.tab-nav::-webkit-scrollbar { display: none; }

.tab-btn {
  flex: 1;
  min-width: 140px;
  padding: 1rem 1.5rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: color 0.25s ease, background 0.25s ease;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.tab-btn.active {
  color: var(--accent-cyan);
  background: var(--accent-cyan-dim);
  border-bottom-color: var(--accent-cyan);
}

.tab-btn:hover:not(.active) { color: var(--text-primary); background: rgba(255,255,255,0.03); }

.tab-content { display: none; padding: 2rem; }
.tab-content.active { display: block; }

.tab-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) { .tab-inner { grid-template-columns: 1fr 1fr; align-items: center; } }

.tab-text h3 { font-size: 1.2rem; margin-bottom: 0.75rem; }
.tab-text h4 { font-size: 0.95rem; font-weight: 600; margin: 1rem 0 0.4rem; color: var(--text-primary); }
.tab-text p { font-size: 0.9rem; }

.tab-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.tab-img img { width: 100%; height: 100%; object-fit: cover; }

.test-results { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 1rem; }

.test-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75em;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
}

.test-good { background: rgba(74,222,128,0.08); border: 1px solid rgba(74,222,128,0.2); }
.test-good i { color: #4ade80; margin-top: 0.1em; flex-shrink: 0; }
.test-neutral { background: rgba(251,191,36,0.08); border: 1px solid rgba(251,191,36,0.2); }
.test-neutral i { color: #fbbf24; margin-top: 0.1em; flex-shrink: 0; }
.test-bad { background: rgba(248,113,113,0.08); border: 1px solid rgba(248,113,113,0.2); }
.test-bad i { color: #f87171; margin-top: 0.1em; flex-shrink: 0; }

.test-item div { display: flex; flex-direction: column; gap: 0.15rem; }
.test-item strong { color: var(--text-primary); font-weight: 600; }
.test-item span { color: var(--text-secondary); font-size: 0.82rem; }

.restoration-full-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}

.restoration-full-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.restoration-full-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-accent);
}

.rfc-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.rfc-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.rfc-header h3 { font-size: 1rem; flex: 1; }

.rfc-difficulty {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2em 0.7em;
  border-radius: var(--radius-full);
  background: rgba(248,113,113,0.15);
color: #f87171;
  border: 1px solid rgba(248,113,113,0.3);
}

.rfc-difficulty--medium {
  background: rgba(251,191,36,0.15);
  color: #fbbf24;
  border: 1px solid rgba(251,191,36,0.3);
}

.rfc-difficulty--easy {
  background: rgba(74,222,128,0.15);
  color: #4ade80;
  border: 1px solid rgba(74,222,128,0.3);
}

.restoration-full-card p { font-size: 0.9rem; margin-bottom: 0.75rem; }

.rfc-note {
  display: flex;
  align-items: flex-start;
  gap: 0.5em;
  font-size: 0.82rem;
  color: #f87171;
  background: rgba(248,113,113,0.08);
  border: 1px solid rgba(248,113,113,0.2);
  border-radius: var(--radius-md);
  padding: 0.6rem 0.85rem;
  margin-top: 0.75rem;
}

.rfc-note i { flex-shrink: 0; margin-top: 0.1em; }

.rfc-note--ok {
  color: #4ade80;
  background: rgba(74,222,128,0.08);
  border-color: rgba(74,222,128,0.2);
}

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

.coating-detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: border-color 0.3s ease;
}

.coating-detail-card:hover { border-color: var(--border-accent); }

.coating-detail-header {
  padding: 1.25rem 1.75rem;
}

.coating-detail-header h3 {
  display: flex;
  align-items: center;
  gap: 0.6em;
  font-size: 1.1rem;
  font-weight: 600;
}

.coating-detail-header--silver h3 i { color: #c0c0c8; }
.coating-detail-header--aluminium h3 i { color: var(--accent-cyan); }
.coating-detail-header--titanium h3 i { color: #a78bfa; }

.coating-detail-body { padding: 1.75rem; }
.coating-detail-body > p { font-size: 0.92rem; margin-bottom: 1.5rem; }

.coating-detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 600px) { .coating-detail-grid { grid-template-columns: 1fr 1fr; } }

.coating-detail-grid h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.coating-pros-cons {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.coating-pros-cons li {
  display: flex;
  align-items: flex-start;
  gap: 0.5em;
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin: 0;
}

.coating-pros-cons .pro i { color: #4ade80; font-size: 0.7rem; margin-top: 0.2em; flex-shrink: 0; }
.coating-pros-cons .con i { color: #f87171; font-size: 0.7rem; margin-top: 0.2em; flex-shrink: 0; }

.coating-spec {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.coating-spec span { font-size: 0.85rem; color: var(--text-secondary); }
.coating-spec strong { color: var(--text-primary); }

.diy-full-guide { display: flex; flex-direction: column; gap: 1.5rem; }

.diy-guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  box-shadow: var(--shadow-card);
}

.diy-guide-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.diy-guide-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-lg);
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.3rem;
  flex-shrink: 0;
  box-shadow: 0 4px 20px var(--accent-cyan-glow);
}

.diy-guide-header h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); margin-bottom: 0.25rem; }

.diy-guide-level {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.diy-guide-materials { margin-bottom: 2rem; }

.diy-guide-materials h4,
.diy-guide-steps h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
}

.diy-guide-materials ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.5rem;
}

.diy-guide-materials li {
  display: flex;
  align-items: flex-start;
  gap: 0.5em;
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 0.5rem 0.75rem;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  margin: 0;
}

.diy-guide-materials li::before {
  content: '→';
  color: var(--accent-cyan);
  flex-shrink: 0;
  font-size: 0.8rem;
}

.diy-guide-steps { display: flex; flex-direction: column; gap: 0; }

.guide-step {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.guide-step:last-child { border-bottom: none; }

.gs-num {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
  font-family: 'Sora', sans-serif;
}

.guide-step div { font-size: 0.9rem; color: var(--text-secondary); }
.guide-step strong { color: var(--text-primary); }

.mistakes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.mistake-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}

.mistake-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
}

.mistake-card--bad::before { background: linear-gradient(90deg, #f87171, #ef4444); }
.mistake-card--warn::before { background: linear-gradient(90deg, #fbbf24, #f59e0b); }

.mistake-card:hover {
  transform: translateY(-3px);
  border-color: rgba(248,113,113,0.3);
}

.mistake-card--warn:hover { border-color: rgba(251,191,36,0.3); }

.mistake-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: rgba(248,113,113,0.1);
  border: 1px solid rgba(248,113,113,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #f87171;
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.mistake-card--warn .mistake-icon {
  background: rgba(251,191,36,0.1);
  border-color: rgba(251,191,36,0.2);
  color: #fbbf24;
}

.mistake-card h3 { font-size: 1rem; margin-bottom: 0.6rem; }
.mistake-card p { font-size: 0.88rem; margin-bottom: 1rem; }

.mistake-verdict {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #f87171;
  background: rgba(248,113,113,0.1);
  border: 1px solid rgba(248,113,113,0.2);
  border-radius: var(--radius-full);
  padding: 0.25em 0.85em;
}

.mistake-verdict--warn {
  color: #fbbf24;
  background: rgba(251,191,36,0.1);
  border-color: rgba(251,191,36,0.2);
}

.mistakes-list-section { display: flex; flex-direction: column; gap: 0; }

.mistake-list-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.mistake-list-item:last-child { border-bottom: none; }

.mli-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  background: rgba(248,113,113,0.1);
  border: 1px solid rgba(248,113,113,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #f87171;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.mli-content h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.mli-content p { font-size: 0.9rem; margin-bottom: 0.75rem; }

.mli-tip {
  display: flex;
  align-items: flex-start;
  gap: 0.5em;
  font-size: 0.85rem;
  color: var(--accent-cyan);
  background: var(--accent-cyan-dim);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  padding: 0.6rem 0.85rem;
}

.mli-tip i { flex-shrink: 0; margin-top: 0.1em; }

.usage-mistakes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.usage-mistake {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.usage-mistake:hover {
  transform: translateY(-3px);
  border-color: rgba(248,113,113,0.25);
}

.um-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.um-header i {
  font-size: 1.2rem;
  color: #f87171;
  flex-shrink: 0;
}

.um-header h3 { font-size: 0.95rem; font-weight: 600; }

.usage-mistake p { font-size: 0.88rem; }

.mistakes-summary {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: clamp(2rem, 5vw, 3rem);
  box-shadow: var(--shadow-card);
  text-align: center;
}

.summary-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius-lg);
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.5rem;
  margin: 0 auto 1.25rem;
  box-shadow: 0 4px 24px var(--accent-cyan-glow);
}

.mistakes-summary h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 2rem; }

.summary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  text-align: left;
}

@media (min-width: 600px) { .summary-grid { grid-template-columns: 1fr 1fr; } }

.summary-col {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  border: 1px solid var(--border-subtle);
}

.summary-col h3 {
  display: flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.summary-col--bad h3 { color: #f87171; }
.summary-col--good h3 { color: #4ade80; }
.summary-col--bad h3 i { color: #f87171; }
.summary-col--good h3 i { color: #4ade80; }

.summary-col ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.summary-col li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding-left: 1rem;
  position: relative;
  margin: 0;
}

.summary-col--bad li::before { content: '✗'; position: absolute; left: 0; color: #f87171; font-size: 0.75rem; top: 0.05em; }
.summary-col--good li::before { content: '✓'; position: absolute; left: 0; color: #4ade80; font-size: 0.75rem; top: 0.05em; }

.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) { .contact-layout { grid-template-columns: 1fr 1.5fr; align-items: start; } }

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-card);
}

.contact-info-card h2 { font-size: 1.3rem; margin-bottom: 1.75rem; }

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.contact-detail:last-of-type { border-bottom: none; }

.contact-detail-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  background: var(--accent-cyan-dim);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 0.9rem;
  flex-shrink: 0;
}

.contact-detail strong {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.contact-detail span,
.contact-detail a {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.contact-detail a:hover { color: var(--accent-cyan); }

.contact-note {
  display: flex;
  align-items: flex-start;
  gap: 0.75em;
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--accent-cyan-dim);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.contact-note i { color: var(--accent-cyan); flex-shrink: 0; margin-top: 0.1em; }
.contact-note p { margin: 0; font-size: 0.85rem; }

.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-card);
}

.contact-form-card h2 { font-size: 1.3rem; margin-bottom: 1.75rem; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.8rem 1rem;
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
  width: 100%;
}

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

.form-group textarea { resize: vertical; min-height: 120px; }

.form-checkbox { flex-direction: row; align-items: flex-start; gap: 0.75rem; }

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  min-width: 18px;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-primary);
  cursor: pointer;
  accent-color: var(--accent-cyan);
  margin-top: 0.1em;
}

.checkbox-label a { color: var(--accent-cyan); }

.form-submit-btn { width: 100%; justify-content: center; }

.map-section .map-wrap {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
}

.map-wrap iframe { display: block; }

.legal-section { max-width: 800px; margin: 0 auto; }

.legal-content h2 {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  margin: 2.5rem 0 0.75rem;
  color: var(--text-primary);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.legal-content h2:first-child { margin-top: 0; }

.legal-content h3 {
  font-size: 1rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--text-primary);
}

.legal-content p { font-size: 0.92rem; line-height: 1.8; color: var(--text-secondary); }

.legal-content ul, .legal-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.legal-content li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  line-height: 1.7;
}

.legal-content a { color: var(--accent-cyan); }
.legal-content a:hover { text-decoration: underline; }

.cookie-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.85rem;
}

.cookie-table th {
  background: var(--bg-card);
  color: var(--text-primary);
  font-weight: 600;
  padding: 0.75rem 1rem;
  text-align: left;
  border: 1px solid var(--border-subtle);
}

.cookie-table td {
  padding: 0.65rem 1rem;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

.cookie-table tr:nth-child(even) td { background: rgba(255,255,255,0.02); }

.thanks-section {
  min-height: calc(100vh - var(--nav-h) - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + var(--space-2xl)) 0 var(--space-2xl);
}

.thanks-inner {
  text-align: center;
  max-width: 520px;
  margin: 0 auto;
}

.thanks-icon {
  font-size: 4rem;
  color: #4ade80;
  margin-bottom: 1.5rem;
  filter: drop-shadow(0 0 20px rgba(74,222,128,0.4));
  animation: thanks-pop 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) both;
}

@keyframes thanks-pop {
  from { transform: scale(0.5); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.thanks-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  margin-bottom: 1rem;
}

.thanks-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.thanks-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 1rem;
  right: 1rem;
  max-width: 680px;
  margin: 0 auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  z-index: 9000;
  box-shadow: 0 8px 48px rgba(0,0,0,0.6), 0 0 0 1px rgba(0,212,255,0.1), var(--shadow-glow-cyan);
  animation: slide-up 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

@media (min-width: 700px) {
  .cookie-banner { left: 50%; right: auto; transform: translateX(-50%); }
}

@keyframes slide-up {
  from { transform: translateY(100px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@media (min-width: 700px) {
  @keyframes slide-up {
    from { transform: translateX(-50%) translateY(100px); opacity: 0; }
    to { transform: translateX(-50%) translateY(0); opacity: 1; }
  }
}

.cookie-inner {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

@media (min-width: 500px) {
  .cookie-inner { flex-direction: row; align-items: center; }
}

.cookie-text h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5em;
  color: var(--text-primary);
}

.cookie-text h4 i { color: var(--accent-cyan); }

.cookie-text p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

.cookie-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  flex-shrink: 0;
}

.cookie-btn {
  padding: 0.55em 1.1em;
  border-radius: var(--radius-full);
  font-family: 'DM Sans', sans-serif;
  font-weight: 600;
  font-size: 0.82rem;
  cursor: pointer;
  border: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
  white-space: nowrap;
  min-height: 36px;
}

.cookie-btn:hover { transform: translateY(-1px); opacity: 0.9; }

.cookie-btn--accept {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 2px 12px var(--accent-cyan-glow);
}

.cookie-btn--reject {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.cookie-btn--customize {
  background: var(--accent-cyan-dim);
  color: var(--accent-cyan);
  border: 1px solid var(--border-accent);
}

.cookie-customize-modal {
  position: fixed;
  inset: 0;
  z-index: 9500;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(8px);
  padding: 1rem;
}

.cookie-modal-inner {
  background: var(--bg-secondary);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  padding: 2rem;
  max-width: 480px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.7), var(--shadow-glow-cyan);
}

.cookie-modal-inner h3 {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.cookie-category {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.cookie-category:last-of-type { border-bottom: none; }

.cookie-cat-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.4rem;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-primary);
}

.cookie-always {
  font-size: 0.72rem;
  font-weight: 600;
  color: #4ade80;
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.2);
  border-radius: var(--radius-full);
  padding: 0.15em 0.65em;
  margin-left: auto;
}

.cookie-category p { font-size: 0.83rem; color: var(--text-muted); margin: 0; }

.cookie-toggle {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
  cursor: pointer;
}

.cookie-toggle input { opacity: 0; width: 0; height: 0; }

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  transition: background 0.3s ease;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--text-muted);
  top: 2px; left: 2px;
  transition: transform 0.3s ease, background 0.3s ease;
}

.cookie-toggle input:checked + .toggle-slider { background: var(--accent-cyan-dim); border-color: var(--accent-cyan); }
.cookie-toggle input:checked + .toggle-slider::before { transform: translateX(18px); background: var(--accent-cyan); }

.cookie-modal-buttons {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

@media (max-width: 767px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }

  .hero {
    grid-template-columns: 1fr;
    padding-top: calc(var(--nav-h) + 2rem);
    text-align: center;
  }

  .hero-subtitle { margin-left: auto; margin-right: auto; }
  .hero-cta { justify-content: center; }
  .hero-steps { justify-content: center; }
  .step-connector { display: none; }
  .hero-image-wrap { order: -1; padding: 1rem; }
  .hero-img { max-width: 340px; margin: 0 auto; }

  .bento-card--large,
  .bento-card--tall,
  .bento-card--wide { grid-column: span 1; grid-row: span 1; }

  .bento-card--wide { flex-direction: column; }
  .bento-card-img--side { width: 100%; height: auto; aspect-ratio: 16/9; }

  .content-area-item { flex-direction: column; gap: 0.75rem; }
  .content-area-num { font-size: 2rem; }

  .mistake-list-item { flex-direction: column; }
  .mli-icon { width: 44px; height: 44px; }

  .tab-inner { grid-template-columns: 1fr; }
  .tab-img { order: -1; }

  .diy-guide-header { flex-direction: column; align-items: flex-start; }

  .footer-cta-inner { padding: 0 1rem; }
}

@media (max-width: 400px) {
  .hero-steps { gap: 0.5rem; }
  .step-item { min-width: 60px; }
  .step-icon { width: 40px; height: 40px; font-size: 0.9rem; }
}