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

:root {
  --clr-bg: #F4F7F9;
  --clr-surface: #FFFFFF;
  --clr-surface-alt: #E8F1F2;
  --clr-text-main: #0B1120;
  --clr-text-muted: #475569;
  
  /* Palette: 180° Cyan/Lime/Indigo/Violet */
  --accent-primary: #0891B2; /* Cyan 600 */
  --accent-primary-dark: #0E7490;
  --accent-secondary: #4C1D95; /* Deep Indigo */
  --accent-pop-lime: #84CC16; /* Electric Lime */
  --accent-pop-violet: #8B5CF6; /* Electric Violet */
  --accent-mint: #6EE7B7; /* Mint */
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-glow: 0 0 20px rgba(8, 145, 178, 0.25);

  --font-head: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --space-unit: 1rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--clr-bg);
  color: var(--clr-text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.1;
  color: var(--clr-text-main);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw + 1rem, 3rem); margin-bottom: 1.5rem; }
h3 { font-size: clamp(1.5rem, 2vw + 1rem, 2rem); margin-bottom: 1rem; }
p { margin-bottom: 1.5rem; color: var(--clr-text-muted); font-size: 1.125rem; }
.lead { font-size: 1.25rem; font-weight: 500; color: var(--clr-text-main); }

/* Layout System */
.sns-wrap {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-inline: clamp(1rem, 5vw, 3rem);
}

section {
  padding-block: clamp(4rem, 8vw, 8rem);
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

/* Header */
.sns-head {
  border-bottom: 1px solid rgba(0,0,0,0.06);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding-block: 1rem;
}

.sns-head__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sns-head__logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--clr-text-main);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sns-head__logo span {
  color: var(--accent-primary);
}

.sns-head__nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

@media (max-width: 768px) {
  .sns-head__nav { display: none; } /* Simplified for this demo */
}

.sns-link {
  text-decoration: none;
  color: var(--clr-text-muted);
  font-weight: 500;
  transition: color 0.2s;
}

.sns-link:hover {
  color: var(--accent-primary);
}

/* Buttons */
.sns-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  font-family: var(--font-head);
  font-size: 1rem;
}

.sns-btn--primary {
  background-color: var(--clr-text-main);
  color: white;
  box-shadow: var(--shadow-md);
}

.sns-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background-color: #000;
}

.sns-btn--secondary {
  background-color: transparent;
  color: var(--clr-text-main);
  border: 1px solid rgba(0,0,0,0.1);
}

.sns-btn--secondary:hover {
  border-color: var(--clr-text-main);
  background-color: white;
}

.sns-btn--pop {
  background-color: var(--accent-pop-lime);
  color: var(--clr-text-main);
}
.sns-btn--pop:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

/* Hero */
.sns-hero {
  background: radial-gradient(circle at 10% 20%, rgba(132, 204, 22, 0.1) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 40%);
}

.sns-hero__content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 900px) {
  .sns-hero__content { grid-template-columns: 1fr; }
}

.sns-hero__eyebrow {
  display: inline-block;
  background: rgba(8, 145, 178, 0.1);
  color: var(--accent-primary);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sns-hero__title span {
  color: var(--accent-primary);
  background: linear-gradient(120deg, var(--accent-primary) 0%, var(--accent-pop-violet) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sns-hero__actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.sns-hero__visual {
  position: relative;
}

.sns-hero__img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(0,0,0,0.05);
}

/* Cards */
.sns-card {
  background: var(--clr-surface);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.sns-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-mint);
}

.sns-card__icon {
  width: 48px;
  height: 48px;
  background: var(--clr-surface-alt);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--accent-secondary);
  font-size: 1.5rem;
  font-weight: bold;
}

/* Stats */
.sns-stats {
  background: var(--clr-text-main);
  color: white;
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  margin: 4rem 0;
}

.sns-stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}

.sns-stat__num {
  display: block;
  font-family: var(--font-head);
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(90deg, var(--accent-pop-lime), var(--accent-mint));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.sns-stat__label {
  font-size: 1rem;
  opacity: 0.8;
}

/* FAQ */
.sns-faq__item {
  border-bottom: 1px solid rgba(0,0,0,0.1);
  padding: 1.5rem 0;
}

.sns-faq__q {
  font-weight: 600;
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  color: var(--clr-text-main);
  cursor: pointer;
}

.sns-faq__a {
  color: var(--clr-text-muted);
  margin-bottom: 0;
}

/* Footer */
.sns-foot {
  background: var(--clr-text-main);
  color: rgba(255,255,255,0.6);
  padding: 4rem 0;
  font-size: 0.9rem;
}

.sns-foot__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
}

@media (max-width: 768px) {
  .sns-foot__grid { grid-template-columns: 1fr; gap: 2rem; }
}

.sns-foot__head {
  color: white;
  font-weight: 700;
  margin-bottom: 1.5rem;
  font-family: var(--font-head);
  font-size: 1.1rem;
}

.sns-foot__list {
  list-style: none;
}

.sns-foot__list li {
  margin-bottom: 0.75rem;
}

.sns-foot__link {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.sns-foot__link:hover {
  color: var(--accent-pop-lime);
}

.sns-foot__brand-desc {
  max-width: 300px;
  margin-top: 1rem;
} img,svg,video{max-width:100%;height:auto} *{box-sizing:border-box}