/* ============================================================
   AVALIA IRRIGA — Landing Page
   Design System v2 — Softer palette + Dark Mode
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Outfit:wght@500;600;700;800&display=swap');

/* ============================================================
   1. Raw Color Palette
   ============================================================ */
:root {
  --brand: #2D6A1E;

  --green-900: #1a3a14;
  --green-800: #245a1c;
  --green-700: #2D6A1E;
  --green-600: #3d8b2f;
  --green-500: #4a9e35;
  --green-400: #6ebb5e;
  --green-300: #92d183;
  --green-200: #b8e3ac;
  --green-100: #ddf2d8;
  --green-50: #f2faf0;

  --teal-700: #0f766e;
  --teal-600: #0d9488;
  --teal-500: #14b8a6;
  --teal-400: #2dd4bf;
  --teal-100: #ccfbf1;
  --teal-50: #f0fdfa;

  --neutral-900: #1c1c27;
  --neutral-800: #2d2d3a;
  --neutral-700: #3d3d4e;
  --neutral-600: #585868;
  --neutral-500: #71718a;
  --neutral-400: #9494a8;
  --neutral-300: #b8b8c8;
  --neutral-200: #dcdce5;
  --neutral-100: #eeeff2;
  --neutral-50: #f7f7f9;

  --white: #ffffff;
  --black: #0a0a0a;
  --amber: #f59e0b;
  --red: #ef4444;
}

/* ============================================================
   2. Semantic Variables — Light Mode
   ============================================================ */
:root {
  --c-bg: #fcfdfc;
  --c-bg-alt: #f3f7f3;
  --c-bg-subtle: var(--green-50);
  --c-surface: var(--white);
  --c-surface-raised: var(--white);
  --c-text: var(--neutral-900);
  --c-text-2: var(--neutral-600);
  --c-text-3: var(--neutral-400);
  --c-border: var(--neutral-100);
  --c-border-2: var(--neutral-200);
  --c-primary: var(--green-600);
  --c-primary-dark: var(--green-700);
  --c-primary-hover: var(--green-500);
  --c-primary-light: var(--green-50);
  --c-primary-border: var(--green-100);
  --c-primary-text: var(--green-800);
  --c-icon-bg: var(--green-50);
  --c-icon-border: var(--green-100);
  --c-section-title: var(--neutral-900);
  --c-tag-bg: var(--green-50);
  --c-tag-border: var(--green-100);
  --c-tag-text: var(--green-600);
  --c-header-bg: rgba(252, 253, 252, 0.92);
  --c-header-border: rgba(0, 0, 0, 0.04);
  --c-overlay: rgba(0, 0, 0, 0.3);
  --c-hero-gradient: linear-gradient(145deg, #f0f7ef 0%, #fcfdfc 40%, #f0fdfa 100%);
  --c-dark-section: linear-gradient(145deg, #1c3d2f 0%, #225642 40%, #1c3d2f 100%);
  --c-dark-section-emphasis-bg: rgba(255, 255, 255, 0.1);
  --c-dark-section-emphasis-border: rgba(255, 255, 255, 0.15);
  --c-dark-section-card-bg: rgba(255, 255, 255, 0.07);
  --c-dark-section-card-border: rgba(255, 255, 255, 0.08);
  --c-input-bg: var(--neutral-50);
  --c-input-border: var(--neutral-200);
  --c-input-focus: var(--green-400);
  --c-input-focus-ring: rgba(74, 158, 53, 0.15);
  --c-footer-bg: var(--neutral-900);
  --c-footer-text: var(--neutral-400);
  --c-footer-heading: var(--white);
  --c-footer-border: var(--neutral-800);
  --c-footer-link-hover: var(--green-400);
  --c-footer-social-bg: var(--neutral-800);
  --c-shadow-color: rgba(0, 0, 0, 0.06);
  --c-shadow-primary: rgba(45, 106, 30, 0.2);

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  /* 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-sm: 0.375rem; --radius-md: 0.5rem; --radius-lg: 0.75rem;
  --radius-xl: 1rem; --radius-2xl: 1.5rem; --radius-full: 9999px;

  --shadow-sm: 0 1px 3px var(--c-shadow-color);
  --shadow-md: 0 4px 8px var(--c-shadow-color);
  --shadow-lg: 0 10px 20px var(--c-shadow-color), 0 4px 8px var(--c-shadow-color);
  --shadow-xl: 0 20px 40px var(--c-shadow-color);
  --shadow-primary: 0 4px 14px var(--c-shadow-primary);
  --shadow-primary-lg: 0 8px 24px var(--c-shadow-primary);

  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);

  --container-max: 1200px;
  --container-padding: 1.5rem;
  --header-height: 76px;
}

/* ============================================================
   3. Dark Mode Overrides
   ============================================================ */
[data-theme="dark"] {
  --c-bg: #0f1117;
  --c-bg-alt: #161b22;
  --c-bg-subtle: #0d2818;
  --c-surface: #1c1f2e;
  --c-surface-raised: #252836;
  --c-text: #e6edf3;
  --c-text-2: #8b949e;
  --c-text-3: #6e7681;
  --c-border: #21262d;
  --c-border-2: #30363d;
  --c-primary: var(--green-400);
  --c-primary-dark: var(--green-500);
  --c-primary-hover: var(--green-300);
  --c-primary-light: #0d2818;
  --c-primary-border: #1a3a14;
  --c-primary-text: var(--green-300);
  --c-icon-bg: #1a2e1a;
  --c-icon-border: #243a24;
  --c-section-title: #e6edf3;
  --c-tag-bg: #1a2e1a;
  --c-tag-border: #243a24;
  --c-tag-text: var(--green-400);
  --c-header-bg: rgba(15, 17, 23, 0.92);
  --c-header-border: rgba(255, 255, 255, 0.06);
  --c-overlay: rgba(0, 0, 0, 0.6);
  --c-hero-gradient: linear-gradient(145deg, #0d1a14 0%, #0f1117 40%, #0d171e 100%);
  --c-dark-section: linear-gradient(145deg, #0d1e17 0%, #0f2520 40%, #0d1e17 100%);
  --c-dark-section-emphasis-bg: rgba(255, 255, 255, 0.06);
  --c-dark-section-emphasis-border: rgba(255, 255, 255, 0.1);
  --c-dark-section-card-bg: rgba(255, 255, 255, 0.04);
  --c-dark-section-card-border: rgba(255, 255, 255, 0.06);
  --c-input-bg: #161b22;
  --c-input-border: #30363d;
  --c-input-focus: var(--green-500);
  --c-input-focus-ring: rgba(110, 187, 94, 0.2);
  --c-footer-bg: #0a0c10;
  --c-footer-text: #6e7681;
  --c-footer-heading: #e6edf3;
  --c-footer-border: #21262d;
  --c-footer-link-hover: var(--green-400);
  --c-footer-social-bg: #21262d;
  --c-shadow-color: rgba(0, 0, 0, 0.3);
  --c-shadow-primary: rgba(110, 187, 94, 0.15);
}

/* ============================================================
   4. Reset & Base
   ============================================================ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--c-text);
  background-color: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; line-height: inherit; color: inherit; border: none; outline: none; background: none; }
button { cursor: pointer; }

/* ============================================================
   5. SVG Icon Base
   ============================================================ */
.icon {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
}

.icon--sm { width: 16px; height: 16px; }
.icon--lg { width: 28px; height: 28px; }
.icon--xl { width: 48px; height: 48px; stroke-width: 1.25; }

/* ============================================================
   6. Layout Utilities
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section { padding: var(--space-24) 0; position: relative; }
.section--alt { background-color: var(--c-bg-alt); }
.section--accent { background-color: var(--c-bg-subtle); }

.section--dark {
  background: var(--c-dark-section);
  color: var(--white);
}

.section__header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-16);
}

.section__tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--c-tag-text);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--c-tag-bg);
  border-radius: var(--radius-full);
  border: 1px solid var(--c-tag-border);
}

.section__title {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--c-section-title);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
}

.section__title--white { color: var(--white); }

.section__subtitle {
  font-size: var(--text-lg);
  color: var(--c-text-2);
  line-height: var(--leading-relaxed);
  max-width: 640px;
  margin: 0 auto;
}

.section__subtitle--white { color: rgba(255, 255, 255, 0.8); }

/* ============================================================
   7. Header & Navigation
   ============================================================ */
.header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.header--scrolled {
  background-color: var(--c-header-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--c-header-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  z-index: 1001;
}

.nav__logo-icon { width: 36px; height: auto; }

[data-theme="dark"] .nav__logo-icon {
  filter: brightness(1.4) saturate(0.8);
}

.nav__logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--brand);
  line-height: 1.1;
}

[data-theme="dark"] .nav__logo-text { color: var(--green-400); }

.nav__logo-text span { display: block; }

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--c-text-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav__link:hover, .nav__link:focus-visible {
  color: var(--c-primary);
  background-color: var(--c-primary-light);
}

.nav__link.active { color: var(--c-primary); }
.nav__cta { margin-left: var(--space-4); }

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  padding: 10px;
  z-index: 1001;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.nav__toggle:hover { background-color: var(--c-primary-light); }

.nav__toggle-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--c-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
  transform-origin: center;
}

.nav__toggle.active .nav__toggle-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.active .nav__toggle-line:nth-child(2) { opacity: 0; }
.nav__toggle.active .nav__toggle-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   8. Theme Toggle
   ============================================================ */
.theme-toggle {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-text-2);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  margin-left: var(--space-2);
}

.theme-toggle:hover {
  background-color: var(--c-primary-light);
  color: var(--c-primary);
}

.theme-toggle .icon { width: 20px; height: 20px; }

/* Light mode: show moon, hide sun */
.theme-toggle__sun { display: none; }
.theme-toggle__moon { display: block; }

/* Dark mode: show sun, hide moon */
[data-theme="dark"] .theme-toggle__sun { display: block; }
[data-theme="dark"] .theme-toggle__moon { display: none; }

/* ============================================================
   9. Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  white-space: nowrap;
  text-align: center;
  min-height: 44px;
}

.btn--primary {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  color: var(--white);
  box-shadow: var(--shadow-primary);
}

.btn--primary:hover, .btn--primary:focus-visible {
  background: linear-gradient(135deg, var(--c-primary-hover) 0%, var(--c-primary) 100%);
  box-shadow: var(--shadow-primary-lg);
  transform: translateY(-2px);
}

.btn--secondary {
  background: var(--c-surface);
  color: var(--c-primary);
  border: 1.5px solid var(--c-border-2);
  box-shadow: var(--shadow-sm);
}

.btn--secondary:hover, .btn--secondary:focus-visible {
  border-color: var(--c-primary);
  background-color: var(--c-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.btn--white {
  background: var(--white);
  color: var(--green-700);
  box-shadow: var(--shadow-md);
}

.btn--white:hover, .btn--white:focus-visible {
  background: var(--green-50);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn--large { font-size: var(--text-base); padding: 1rem 2rem; border-radius: var(--radius-xl); min-height: 52px; }
.btn--full { width: 100%; }
.btn__icon { width: 18px; height: 18px; flex-shrink: 0; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ============================================================
   10. Hero Section
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  background: var(--c-hero-gradient);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 80%; height: 120%;
  background: radial-gradient(ellipse at center, rgba(20, 184, 166, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--c-bg));
  pointer-events: none;
  z-index: 1;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero__content { max-width: 560px; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--c-primary-text);
  padding: var(--space-2) var(--space-4);
  background: var(--c-primary-light);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  border: 1px solid var(--c-primary-border);
}

.hero__badge-dot {
  width: 8px; height: 8px;
  background: var(--c-primary);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  color: var(--c-section-title);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
}

.hero__title-highlight { color: var(--c-primary); }

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--c-text-2);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  max-width: 480px;
}

.hero__buttons { display: flex; flex-wrap: wrap; gap: var(--space-4); }

.hero__image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__image img {
  width: 100%;
  max-width: 520px;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}

.hero__image::before {
  content: '';
  position: absolute;
  inset: -20px;
  background: linear-gradient(135deg, var(--green-200) 0%, transparent 50%);
  border-radius: var(--radius-2xl);
  z-index: -1;
  opacity: 0.4;
}

[data-theme="dark"] .hero__image::before { opacity: 0.15; }

.hero__float {
  position: absolute;
  border-radius: var(--radius-xl);
  background: var(--c-surface);
  box-shadow: var(--shadow-lg);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--c-text);
  z-index: 3;
  animation: float 4s ease-in-out infinite;
  border: 1px solid var(--c-border);
}

.hero__float--top { top: 10%; right: 0; }
.hero__float--bottom { bottom: 15%; left: -10%; animation-delay: 2s; }

.hero__float-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
}

.hero__float-icon--green { background: var(--c-icon-bg); }
.hero__float-icon--blue { background: var(--teal-50); }
[data-theme="dark"] .hero__float-icon--blue { background: #0d2530; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ============================================================
   11. Problem Section
   ============================================================ */
.problem { background: var(--c-bg-alt); }

.problem__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.problem__text { max-width: 500px; }

.problem__description {
  font-size: var(--text-lg);
  color: var(--c-text-2);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
}

.problem__items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.problem__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--c-text-2);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
  min-height: 44px;
}

.problem__item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--c-border-2);
}

.problem__item-icon {
  color: var(--c-primary);
  flex-shrink: 0;
}

.problem__item-icon .icon { width: 20px; height: 20px; }

.problem__image {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.problem__image img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }

/* ============================================================
   12. Solution Section
   ============================================================ */
.solution { background: var(--c-bg); overflow: hidden; }

.solution__visual { margin-top: var(--space-12); }

.solution__transform {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.solution__before {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  max-width: 400px;
  justify-content: center;
}

.solution__before-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border-2);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--c-text-2);
}

.solution__before-item-icon { color: var(--c-text-3); }
.solution__before-item-icon .icon { width: 18px; height: 18px; }

.solution__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
}

.solution__arrow-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  box-shadow: var(--shadow-primary);
}

.solution__arrow-icon .icon { width: 24px; height: 24px; stroke-width: 2; }

.solution__after {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-8);
  background: var(--c-primary-light);
  border: 2px solid var(--c-primary-border);
  border-radius: var(--radius-2xl);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-lg);
  color: var(--c-primary-text);
}

.solution__after-icon { color: var(--c-primary); }
.solution__after-icon .icon { width: 28px; height: 28px; }

/* ============================================================
   13. How It Works
   ============================================================ */
.how-it-works { background: var(--c-bg-alt); }

.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-6);
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%; right: 10%;
  height: 3px;
  background: linear-gradient(90deg, var(--c-border-2), var(--c-primary), var(--c-border-2));
  border-radius: 2px;
  z-index: 0;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.step__number {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark));
  color: var(--white);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-primary);
  flex-shrink: 0;
  position: relative;
}

.step__number::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--c-primary-border);
}

.step__icon {
  color: var(--c-primary);
  margin-bottom: var(--space-3);
}

.step__icon .icon { width: 28px; height: 28px; }

.step__title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--c-section-title);
  margin-bottom: var(--space-2);
}

.step__text {
  font-size: var(--text-sm);
  color: var(--c-text-2);
  line-height: var(--leading-normal);
}

.step__screenshot {
  margin-top: var(--space-4);
  width: 100%; max-width: 180px;
  aspect-ratio: 9/16;
  background: var(--c-primary-light);
  border: 2px solid var(--c-primary-border);
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  color: var(--c-primary);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-4);
  overflow: hidden;
}

.step__screenshot img { width: 100%; height: 100%; object-fit: cover; border-radius: calc(var(--radius-xl) - 2px); }
.step__screenshot-icon .icon { width: 32px; height: 32px; opacity: 0.6; }
.step__screenshot-label { font-size: var(--text-xs); text-align: center; opacity: 0.8; }

/* ============================================================
   14. Differential Section
   ============================================================ */
.differential {
  background: var(--c-dark-section);
  color: var(--white);
  text-align: center;
  padding: var(--space-32) 0;
  position: relative;
  overflow: hidden;
}

.differential::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.differential__headline {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-3xl), 5vw, var(--text-6xl));
  font-weight: 800;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-8);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.differential__highlight { color: var(--green-300); }

.differential__text {
  font-size: var(--text-xl);
  line-height: var(--leading-relaxed);
  opacity: 0.85;
  max-width: 640px;
  margin: 0 auto var(--space-10);
}

.differential__emphasis {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-8);
  padding: var(--space-4) var(--space-8);
  background: var(--c-dark-section-emphasis-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--c-dark-section-emphasis-border);
  border-radius: var(--radius-2xl);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
}

.differential__emphasis .icon { width: 24px; height: 24px; color: var(--green-300); }

.differential__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  max-width: 800px;
  margin: var(--space-12) auto 0;
  text-align: left;
}

.differential__list-item {
  width: calc(33.333% - var(--space-4));
  min-width: 220px;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--c-dark-section-card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-dark-section-card-border);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

.differential__list-icon {
  flex-shrink: 0;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
  color: var(--green-300);
}

.differential__list-icon .icon { width: 14px; height: 14px; stroke-width: 2.5; }

/* ============================================================
   15. Features / Resources
   ============================================================ */
.features { background: var(--c-bg-alt); }

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.feature-card {
  padding: var(--space-8);
  background: var(--c-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--c-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green-400), var(--teal-500));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--c-primary-border);
}

.feature-card:hover::before { opacity: 1; }

.feature-card__icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-lg);
  background: var(--c-icon-bg);
  border: 1px solid var(--c-icon-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  margin-bottom: var(--space-5);
}

.feature-card__icon .icon { width: 24px; height: 24px; }

.feature-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--c-section-title);
  margin-bottom: var(--space-3);
}

.feature-card__text {
  font-size: var(--text-sm);
  color: var(--c-text-2);
  line-height: var(--leading-relaxed);
}

/* ============================================================
   16. Benefits
   ============================================================ */
.benefits { background: var(--c-bg); }

.benefits__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.benefit-card {
  padding: var(--space-8);
  background: var(--c-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--c-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.benefit-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.benefit-card__icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-xl);
  background: var(--c-icon-bg);
  border: 1px solid var(--c-icon-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  flex-shrink: 0;
}

.benefit-card__icon .icon { width: 26px; height: 26px; }

.benefit-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--c-section-title);
}

.benefit-card__text {
  font-size: var(--text-sm);
  color: var(--c-text-2);
  line-height: var(--leading-relaxed);
}

/* ============================================================
   17. Audience
   ============================================================ */
.audience { background: var(--c-bg-subtle); }

.audience__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.audience__card {
  background: var(--c-surface);
  padding: var(--space-8) var(--space-6);
  border-radius: var(--radius-xl);
  text-align: center;
  border: 1px solid var(--c-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.audience__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.audience__card-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-xl);
  background: var(--c-icon-bg);
  border: 1px solid var(--c-icon-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  margin: 0 auto var(--space-4);
}

.audience__card-icon .icon { width: 26px; height: 26px; }

.audience__card-title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--c-section-title);
  margin-bottom: var(--space-2);
}

.audience__card-text {
  font-size: var(--text-sm);
  color: var(--c-text-2);
  line-height: var(--leading-normal);
}

/* ============================================================
   18. Roadmap
   ============================================================ */
.roadmap { background: var(--c-bg); overflow: hidden; }

.roadmap__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.roadmap__text { max-width: 480px; }

.roadmap__description {
  font-size: var(--text-lg);
  color: var(--c-text-2);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.roadmap__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: linear-gradient(135deg, var(--amber), #f97316);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.roadmap__badge .icon { width: 16px; height: 16px; }

.roadmap__image {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.roadmap__image img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }

.roadmap__image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 58, 46, 0.5) 0%, rgba(20, 50, 38, 0.3) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.roadmap__image-badge {
  padding: var(--space-4) var(--space-8);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-xl);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--green-700);
  box-shadow: var(--shadow-lg);
}

/* ============================================================
   19. Social Media Section
   ============================================================ */
.social-section { background: var(--c-bg-alt); }

.social-section__links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  max-width: 600px;
  margin: 0 auto;
}

.social-link-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-10) var(--space-6);
  background: var(--c-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--c-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  cursor: pointer;
}

.social-link-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--c-primary-border);
}

.social-link-card__icon {
  width: 64px; height: 64px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  color: var(--white);
}

.social-link-card__icon .icon { width: 30px; height: 30px; }

.social-link-card__icon--instagram {
  background: linear-gradient(135deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
}

.social-link-card__icon--linkedin {
  background: #0077b5;
}

.social-link-card__icon--email {
  background: linear-gradient(135deg, var(--teal-600), var(--teal-500));
}

.social-link-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--c-section-title);
  margin-bottom: var(--space-2);
}

.social-link-card__text {
  font-size: var(--text-sm);
  color: var(--c-text-2);
  line-height: var(--leading-normal);
}

/* ============================================================
   20. Contact / Conversion
   ============================================================ */
.contact { background: var(--c-bg); }

.contact__wrapper {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-16);
  align-items: start;
}

.contact__info { max-width: 440px; }

.contact__description {
  font-size: var(--text-lg);
  color: var(--c-text-2);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
}

.contact__trust {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact__trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--c-text-2);
  font-weight: 500;
}

.contact__trust-icon {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--c-icon-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--c-primary);
}

.contact__trust-icon .icon { width: 16px; height: 16px; }

.contact__form-card {
  background: var(--c-surface);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--c-border);
}

.form-group { margin-bottom: var(--space-5); }

.form-group__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: var(--space-2);
}

.form-group__label--required::after { content: ' *'; color: var(--red); }

.form-group__input,
.form-group__select,
.form-group__textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--c-input-bg);
  border: 1.5px solid var(--c-input-border);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  color: var(--c-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
  min-height: 48px;
}

.form-group__input:focus,
.form-group__select:focus,
.form-group__textarea:focus {
  background: var(--c-surface);
  border-color: var(--c-input-focus);
  box-shadow: 0 0 0 3px var(--c-input-focus-ring);
}

.form-group__input::placeholder,
.form-group__textarea::placeholder { color: var(--c-text-3); }

.form-group__select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%2371718a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form-group__textarea { resize: vertical; min-height: 100px; }
.contact__form-submit { margin-top: var(--space-6); }

.contact__success { display: none; text-align: center; padding: var(--space-12) var(--space-8); }
.contact__success.is-visible { display: block; }

.contact__success-icon {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--c-icon-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
  margin: 0 auto var(--space-6);
  animation: scale-in 0.4s var(--transition-spring);
}

.contact__success-icon .icon { width: 36px; height: 36px; }

@keyframes scale-in { 0% { transform: scale(0); } 100% { transform: scale(1); } }

.contact__success-title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--c-section-title);
  margin-bottom: var(--space-3);
}

.contact__success-text {
  font-size: var(--text-base);
  color: var(--c-text-2);
  line-height: var(--leading-relaxed);
}

/* ============================================================
   21. CTA Final
   ============================================================ */
.cta-final {
  background: var(--c-dark-section);
  color: var(--white);
  text-align: center;
  padding: var(--space-24) 0;
  position: relative;
  overflow: hidden;
}

.cta-final::before {
  content: '';
  position: absolute;
  top: -50%; left: -30%;
  width: 160%; height: 200%;
  background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.03) 0%, transparent 60%);
  pointer-events: none;
}

.cta-final__quote {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-2xl), 3.5vw, var(--text-4xl));
  font-weight: 700;
  line-height: var(--leading-snug);
  margin-bottom: var(--space-10);
  max-width: 700px;
  margin-left: auto; margin-right: auto;
  font-style: italic;
  position: relative;
}

.cta-final__benefits {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-10);
}

.cta-final__benefit {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-lg);
  font-weight: 500;
  opacity: 0.9;
}

.cta-final__benefit-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cta-final__benefit-icon .icon { width: 14px; height: 14px; }

/* ============================================================
   22. Footer
   ============================================================ */
.footer {
  background: var(--c-footer-bg);
  color: var(--c-footer-text);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__content {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer__brand { max-width: 320px; }

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.footer__logo-icon {
  width: 36px; height: auto;
  filter: brightness(0) invert(1) brightness(0.8) sepia(1) hue-rotate(70deg) saturate(3);
}

.footer__logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--c-footer-heading);
  line-height: 1.1;
}

.footer__logo-text span { display: block; }

.footer__description {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.footer__nav-title {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--c-footer-heading);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-5);
}

.footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__nav-link {
  font-size: var(--text-sm);
  color: var(--c-footer-text);
  transition: color var(--transition-fast);
}

.footer__nav-link:hover { color: var(--c-footer-link-hover); }

.footer__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.footer__social-link {
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  background: var(--c-footer-social-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-footer-text);
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.footer__social-link .icon { width: 20px; height: 20px; }

.footer__social-link:hover {
  background: var(--c-primary);
  color: var(--white);
  transform: translateY(-2px);
}

.footer__bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--c-footer-border);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--c-text-3);
}

/* ============================================================
   23. Scroll Animations
   ============================================================ */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-on-scroll[data-delay="100"] { transition-delay: 100ms; }
.animate-on-scroll[data-delay="200"] { transition-delay: 200ms; }
.animate-on-scroll[data-delay="300"] { transition-delay: 300ms; }
.animate-on-scroll[data-delay="400"] { transition-delay: 400ms; }
.animate-on-scroll[data-delay="500"] { transition-delay: 500ms; }
.animate-on-scroll[data-delay="600"] { transition-delay: 600ms; }

/* ============================================================
   24. Responsive — Tablet (max 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  :root { --container-padding: 1.25rem; }
  .section { padding: var(--space-16) 0; }
  .section__title { font-size: var(--text-3xl); }

  .hero .container { grid-template-columns: 1fr; text-align: center; gap: var(--space-10); }
  .hero__content { max-width: 600px; margin: 0 auto; }
  .hero__subtitle { margin: 0 auto var(--space-8); }
  .hero__buttons { justify-content: center; }
  .hero__image { max-width: 450px; margin: 0 auto; }
  .hero__float { display: none; }

  .problem__content { grid-template-columns: 1fr; gap: var(--space-10); }
  .problem__text { max-width: 100%; text-align: center; }
  .problem__items { max-width: 400px; margin: 0 auto; }
  .problem__image { max-width: 500px; margin: 0 auto; }

  .steps { grid-template-columns: repeat(3, 1fr); }
  .steps::before { display: none; }

  .features__grid { grid-template-columns: repeat(2, 1fr); }
  .benefits__grid { grid-template-columns: repeat(2, 1fr); }
  .audience__grid { grid-template-columns: repeat(2, 1fr); }

  .roadmap__content { grid-template-columns: 1fr; gap: var(--space-10); text-align: center; }
  .roadmap__text { max-width: 100%; margin: 0 auto; }
  .roadmap__image { max-width: 500px; margin: 0 auto; }

  .social-section__links { grid-template-columns: repeat(2, 1fr); }

  .contact__wrapper { grid-template-columns: 1fr; gap: var(--space-10); }
  .contact__info { max-width: 100%; text-align: center; }
  .contact__trust { align-items: center; }

  .footer__content { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .footer__brand { grid-column: 1 / -1; max-width: 100%; }
}

/* ============================================================
   25. Responsive — Mobile (max 768px)
   ============================================================ */
@media (max-width: 768px) {
  :root { --container-padding: 1rem; --header-height: 64px; }
  .section { padding: var(--space-12) 0; }
  .section__header { margin-bottom: var(--space-10); }
  .section__title { font-size: var(--text-2xl); }
  .section__subtitle { font-size: var(--text-base); }

  /* Navigation */
  .nav__menu {
    position: fixed;
    top: 0; right: -100%;
    width: 80%; max-width: 320px;
    height: 100vh; height: 100dvh;
    background: var(--c-surface);
    flex-direction: column;
    align-items: stretch;
    padding: calc(var(--header-height) + var(--space-8)) var(--space-6) var(--space-8);
    gap: var(--space-1);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
    transition: right var(--transition-base);
    overflow-y: auto;
  }

  .nav__menu.is-open { right: 0; }

  .nav__link {
    font-size: var(--text-base);
    padding: var(--space-3) var(--space-4);
    min-height: 48px;
    display: flex;
    align-items: center;
  }

  .nav__cta { margin-left: 0; margin-top: var(--space-4); }
  .nav__toggle { display: flex; }

  .nav__overlay {
    position: fixed;
    inset: 0;
    background: var(--c-overlay);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    z-index: 999;
  }

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

  .theme-toggle { margin-left: auto; margin-right: var(--space-2); }

  /* Hero */
  .hero { min-height: auto; padding-top: calc(var(--header-height) + var(--space-10)); padding-bottom: var(--space-10); }
  .hero__title { font-size: var(--text-3xl); }
  .hero__subtitle { font-size: var(--text-base); }
  .hero__buttons { flex-direction: column; }
  .hero__buttons .btn { width: 100%; min-height: 52px; }

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

  .steps { grid-template-columns: 1fr; gap: var(--space-8); max-width: 320px; margin: 0 auto; }
  .step__screenshot { max-width: 200px; }

  .differential { padding: var(--space-16) 0; }
  .differential__list-item { width: 100%; min-width: 100%; }

  .features__grid { grid-template-columns: 1fr; }
  .benefits__grid { grid-template-columns: 1fr; }
  .audience__grid { grid-template-columns: 1fr; }

  .social-section__links { grid-template-columns: 1fr; max-width: 340px; margin: 0 auto; }

  .solution__transform { flex-direction: column; }
  .solution__arrow { transform: rotate(90deg); }

  .cta-final__benefits { flex-direction: column; align-items: center; }
  .contact__form-card { padding: var(--space-6); }

  .footer__content { grid-template-columns: 1fr; gap: var(--space-8); text-align: center; }
  .footer__logo { justify-content: center; }
  .footer__social { justify-content: center; }
  .footer__nav-list { align-items: center; }
}

/* ============================================================
   26. Small Mobile (max 480px)
   ============================================================ */
@media (max-width: 480px) {
  .hero__title { font-size: var(--text-2xl); }
  .differential__headline { font-size: var(--text-2xl); }
  .cta-final__quote { font-size: var(--text-xl); }
  .btn--large { padding: 0.875rem 1.5rem; font-size: var(--text-sm); }
}

/* ============================================================
   27. Accessibility
   ============================================================ */
:focus-visible { outline: 2px solid var(--c-primary); outline-offset: 2px; }

.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;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .animate-on-scroll { opacity: 1; transform: none; }
}

/* ============================================================
   28. Print
   ============================================================ */
@media print {
  .header, .nav__toggle, .hero__buttons, .cta-final, .contact__form-card, .footer__social, .theme-toggle, .social-section { display: none !important; }
  body { color: #000; background: #fff; }
  .section { page-break-inside: avoid; }
}