/* PUZZMI - 완전한 반응형 디자인 시스템 (기존 색감 유지) */

/* ===== CSS 변수 (기존 색감 기반) ===== */
:root {
  /* 기존 PUZZMI 브랜드 컬러 */
  --primary-50: #f0f4ff;
  --primary-100: #e0e9ff;
  --primary-200: #c7d7fe;
  --primary-300: #a5b8fc;
  --primary-400: #8b93f8;
  --primary-500: #667eea;
  --primary-600: #5a67d8;
  --primary-700: #4c51bf;
  --primary-800: #434190;
  --primary-900: #3c366b;

  --secondary-50: #fdf2f8;
  --secondary-100: #fce7f3;
  --secondary-200: #fbcfe8;
  --secondary-300: #f9a8d4;
  --secondary-400: #f472b6;
  --secondary-500: #f093fb;
  --secondary-600: #e879f9;
  --secondary-700: #d946ef;
  --secondary-800: #c026d3;
  --secondary-900: #a21caf;

  --accent-50: #f0fdfa;
  --accent-100: #ccfbf1;
  --accent-200: #99f6e4;
  --accent-300: #5eead4;
  --accent-400: #2dd4bf;
  --accent-500: #14b8a6;
  --accent-600: #0d9488;
  --accent-700: #0f766e;
  --accent-800: #115e59;
  --accent-900: #134e4a;

  /* 상태 컬러 */
  --success-50: #f0fdf4;
  --success-100: #dcfce7;
  --success-200: #bbf7d0;
  --success-300: #86efac;
  --success-400: #4ade80;
  --success-500: #22c55e;
  --success-600: #16a34a;
  --success-700: #15803d;
  --success-800: #166534;
  --success-900: #14532d;

  --warning-50: #fffbeb;
  --warning-100: #fef3c7;
  --warning-200: #fde68a;
  --warning-300: #fcd34d;
  --warning-400: #fbbf24;
  --warning-500: #f59e0b;
  --warning-600: #d97706;
  --warning-700: #b45309;
  --warning-800: #92400e;
  --warning-900: #78350f;

  --error-50: #fef2f2;
  --error-100: #fee2e2;
  --error-200: #fecaca;
  --error-300: #fca5a5;
  --error-400: #f87171;
  --error-500: #ef4444;
  --error-600: #dc2626;
  --error-700: #b91c1c;
  --error-800: #991b1b;
  --error-900: #7f1d1d;

  /* 중성 컬러 */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* 텍스트 컬러 */
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-tertiary: var(--gray-400);
  --text-inverse: #ffffff;

  /* 배경 컬러 (기존 크림색 유지) */
  --bg-primary: #ffffff;
  --bg-secondary: var(--gray-50);
  --bg-tertiary: var(--gray-100);
  --bg-overlay: rgba(0, 0, 0, 0.5);
  --bg-cream: linear-gradient(135deg, #faf7f2 0%, #f5f1ea 50%, #f0ebe2 100%);

  /* 기존 PUZZMI 그라디언트 */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-rainbow: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #f5576c 75%, #4facfe 100%);

  /* 간격 시스템 (8px 기반) */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* 타이포그래피 */
  --font-family-sans: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  --font-size-6xl: 3.75rem;   /* 60px */

  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;

  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* 보더 반경 */
  --radius-sm: 0.375rem;   /* 6px */
  --radius-base: 0.5rem;   /* 8px */
  --radius-md: 0.75rem;    /* 12px */
  --radius-lg: 1rem;       /* 16px */
  --radius-xl: 1.5rem;     /* 24px */
  --radius-2xl: 2rem;      /* 32px */
  --radius-full: 9999px;

  /* 그림자 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* 트랜지션 */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Z-인덱스 */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* ===== 기본 리셋 및 설정 ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background: var(--bg-cream);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== 타이포그래피 ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.025em;
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
}

a {
  color: var(--primary-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-700);
}

/* ===== 레이아웃 컴포넌트 ===== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .container { padding: 0 var(--space-6); }
}

@media (min-width: 1024px) {
  .container { padding: 0 var(--space-8); }
}

.section {
  padding: var(--space-16) 0;
}

@media (min-width: 768px) {
  .section { padding: var(--space-20) 0; }
}

/* 섹션 간격 및 구분 개선 */
section {
  padding: var(--space-24) 0;
  position: relative;
}

/* 섹션 간 구분선 */
section:not(:first-child)::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  max-width: 800px;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, rgba(102, 126, 234, 0.2) 20%, rgba(102, 126, 234, 0.3) 50%, rgba(102, 126, 234, 0.2) 80%, transparent 100%);
  border-radius: 1px;
}

/* 특별한 섹션들은 더 강한 구분 */
.hero + section::before {
  background: linear-gradient(90deg, transparent 0%, rgba(102, 126, 234, 0.4) 20%, rgba(240, 147, 251, 0.5) 50%, rgba(102, 126, 234, 0.4) 80%, transparent 100%);
  height: 3px;
}

@media (max-width: 768px) {
  section {
    padding: var(--space-20) 0;
  }
  
  section:not(:first-child)::before {
    width: 90%;
  }
}

@media (max-width: 480px) {
  section {
    padding: var(--space-16) 0;
  }
}

/* ===== 그리드 시스템 ===== */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ===== 플렉스 시스템 ===== */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

/* ===== 간격 유틸리티 ===== */
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.p-2 { padding: var(--space-2); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }
.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }

.m-4 { margin: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

/* ===== 카드 컴포넌트 ===== */
.card {
  background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(255,255,255,0.92) 100%);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-rainbow);
  opacity: 0.6;
  transition: opacity var(--transition-base);
}

.card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--shadow-xl);
  border-color: rgba(102, 126, 234, 0.3);
}

.card:hover::before {
  opacity: 1;
  height: 4px;
}

.card-header {
  padding: var(--space-6);
  border-bottom: 1px solid rgba(102, 126, 234, 0.1);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(240, 147, 251, 0.03) 100%);
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-6);
  border-top: 1px solid rgba(102, 126, 234, 0.1);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(240, 147, 251, 0.03) 100%);
}

/* ===== 버튼 컴포넌트 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
  letter-spacing: 0.3px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

/* 버튼 변형 */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-inverse);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 28px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
  background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
  color: var(--text-primary);
  border: 2px solid rgba(102, 126, 234, 0.2);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(255,255,255,0.9) 100%);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
  border-color: rgba(102, 126, 234, 0.4);
}

.btn-accent {
  background: var(--gradient-accent);
  color: var(--text-inverse);
  box-shadow: 0 8px 20px rgba(79, 172, 254, 0.3);
}

.btn-accent:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 28px rgba(79, 172, 254, 0.4);
}

.btn-danger {
  background: var(--gradient-secondary);
  color: var(--text-inverse);
  box-shadow: 0 8px 20px rgba(240, 147, 251, 0.3);
}

.btn-danger:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 28px rgba(240, 147, 251, 0.4);
}

/* 버튼 크기 */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

.btn-xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--font-size-xl);
}

/* ===== 폼 컴포넌트 ===== */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-4) var(--space-5);
  font-size: var(--font-size-base);
  font-family: inherit;
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.85) 100%);
  border: 2px solid rgba(102, 126, 234, 0.2);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  backdrop-filter: blur(8px);
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.04);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: rgba(102, 126, 234, 0.5);
  background: linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(255,255,255,0.95) 100%);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1), inset 0 2px 12px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(102, 126, 234, 0.5);
  font-style: italic;
}

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

.form-error {
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--error-600);
  font-weight: var(--font-weight-medium);
}

.form-help {
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ===== 히어로 섹션 ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg-cream);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: all 1s ease-in-out;
  z-index: 1;
}

/* ===== CSS 변수 (기존 색감 기반) ===== */
:root {
  /* 기존 PUZZMI 브랜드 컬러 */
  --primary-50: #f0f4ff;
  --primary-100: #e0e9ff;
  --primary-200: #c7d7fe;
  --primary-300: #a5b8fc;
  --primary-400: #8b93f8;
  --primary-500: #667eea;
  --primary-600: #5a67d8;
  --primary-700: #4c51bf;
  --primary-800: #434190;
  --primary-900: #3c366b;

  --secondary-50: #fdf2f8;
  --secondary-100: #fce7f3;
  --secondary-200: #fbcfe8;
  --secondary-300: #f9a8d4;
  --secondary-400: #f472b6;
  --secondary-500: #f093fb;
  --secondary-600: #e879f9;
  --secondary-700: #d946ef;
  --secondary-800: #c026d3;
  --secondary-900: #a21caf;

  --accent-50: #f0fdfa;
  --accent-100: #ccfbf1;
  --accent-200: #99f6e4;
  --accent-300: #5eead4;
  --accent-400: #2dd4bf;
  --accent-500: #14b8a6;
  --accent-600: #0d9488;
  --accent-700: #0f766e;
  --accent-800: #115e59;
  --accent-900: #134e4a;

  /* 상태 컬러 */
  --success-50: #f0fdf4;
  --success-100: #dcfce7;
  --success-200: #bbf7d0;
  --success-300: #86efac;
  --success-400: #4ade80;
  --success-500: #22c55e;
  --success-600: #16a34a;
  --success-700: #15803d;
  --success-800: #166534;
  --success-900: #14532d;

  --warning-50: #fffbeb;
  --warning-100: #fef3c7;
  --warning-200: #fde68a;
  --warning-300: #fcd34d;
  --warning-400: #fbbf24;
  --warning-500: #f59e0b;
  --warning-600: #d97706;
  --warning-700: #b45309;
  --warning-800: #92400e;
  --warning-900: #78350f;

  --error-50: #fef2f2;
  --error-100: #fee2e2;
  --error-200: #fecaca;
  --error-300: #fca5a5;
  --error-400: #f87171;
  --error-500: #ef4444;
  --error-600: #dc2626;
  --error-700: #b91c1c;
  --error-800: #991b1b;
  --error-900: #7f1d1d;

  /* 중성 컬러 */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* 텍스트 컬러 */
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-tertiary: var(--gray-400);
  --text-inverse: #ffffff;

  /* 배경 컬러 (기존 크림색 유지) */
  --bg-primary: #ffffff;
  --bg-secondary: var(--gray-50);
  --bg-tertiary: var(--gray-100);
  --bg-overlay: rgba(0, 0, 0, 0.5);
  --bg-cream: linear-gradient(135deg, #faf7f2 0%, #f5f1ea 50%, #f0ebe2 100%);

  /* 기존 PUZZMI 그라디언트 */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-rainbow: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #f5576c 75%, #4facfe 100%);

  /* 간격 시스템 (8px 기반) */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* 타이포그래피 */
  --font-family-sans: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  --font-size-6xl: 3.75rem;   /* 60px */

  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;

  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* 보더 반경 */
  --radius-sm: 0.375rem;   /* 6px */
  --radius-base: 0.5rem;   /* 8px */
  --radius-md: 0.75rem;    /* 12px */
  --radius-lg: 1rem;       /* 16px */
  --radius-xl: 1.5rem;     /* 24px */
  --radius-2xl: 2rem;      /* 32px */
  --radius-full: 9999px;

  /* 그림자 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* 트랜지션 */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Z-인덱스 */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* ===== 기본 리셋 및 설정 ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background: var(--bg-cream);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== 타이포그래피 ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.025em;
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
}

a {
  color: var(--primary-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-700);
}

/* ===== 레이아웃 컴포넌트 ===== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .container { padding: 0 var(--space-6); }
}

@media (min-width: 1024px) {
  .container { padding: 0 var(--space-8); }
}

.section {
  padding: var(--space-16) 0;
}

@media (min-width: 768px) {
  .section { padding: var(--space-20) 0; }
}

/* 섹션 간격 및 구분 개선 */
section {
  padding: var(--space-24) 0;
  position: relative;
}

/* 섹션 간 구분선 */
section:not(:first-child)::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  max-width: 800px;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, rgba(102, 126, 234, 0.2) 20%, rgba(102, 126, 234, 0.3) 50%, rgba(102, 126, 234, 0.2) 80%, transparent 100%);
  border-radius: 1px;
}

/* 특별한 섹션들은 더 강한 구분 */
.hero + section::before {
  background: linear-gradient(90deg, transparent 0%, rgba(102, 126, 234, 0.4) 20%, rgba(240, 147, 251, 0.5) 50%, rgba(102, 126, 234, 0.4) 80%, transparent 100%);
  height: 3px;
}

@media (max-width: 768px) {
  section {
    padding: var(--space-20) 0;
  }
  
  section:not(:first-child)::before {
    width: 90%;
  }
}

@media (max-width: 480px) {
  section {
    padding: var(--space-16) 0;
  }
}

/* ===== 그리드 시스템 ===== */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ===== 플렉스 시스템 ===== */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

/* ===== 간격 유틸리티 ===== */
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.p-2 { padding: var(--space-2); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }
.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }

.m-4 { margin: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

/* ===== 카드 컴포넌트 ===== */
.card {
  background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(255,255,255,0.92) 100%);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-rainbow);
  opacity: 0.6;
  transition: opacity var(--transition-base);
}

.card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--shadow-xl);
  border-color: rgba(102, 126, 234, 0.3);
}

.card:hover::before {
  opacity: 1;
  height: 4px;
}

.card-header {
  padding: var(--space-6);
  border-bottom: 1px solid rgba(102, 126, 234, 0.1);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(240, 147, 251, 0.03) 100%);
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-6);
  border-top: 1px solid rgba(102, 126, 234, 0.1);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(240, 147, 251, 0.03) 100%);
}

/* ===== 버튼 컴포넌트 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
  letter-spacing: 0.3px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

/* 버튼 변형 */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-inverse);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 28px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
  background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
  color: var(--text-primary);
  border: 2px solid rgba(102, 126, 234, 0.2);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(255,255,255,0.9) 100%);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
  border-color: rgba(102, 126, 234, 0.4);
}

.btn-accent {
  background: var(--gradient-accent);
  color: var(--text-inverse);
  box-shadow: 0 8px 20px rgba(79, 172, 254, 0.3);
}

.btn-accent:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 28px rgba(79, 172, 254, 0.4);
}

.btn-danger {
  background: var(--gradient-secondary);
  color: var(--text-inverse);
  box-shadow: 0 8px 20px rgba(240, 147, 251, 0.3);
}

.btn-danger:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 28px rgba(240, 147, 251, 0.4);
}

/* 버튼 크기 */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

.btn-xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--font-size-xl);
}

/* ===== 폼 컴포넌트 ===== */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-4) var(--space-5);
  font-size: var(--font-size-base);
  font-family: inherit;
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.85) 100%);
  border: 2px solid rgba(102, 126, 234, 0.2);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  backdrop-filter: blur(8px);
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.04);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: rgba(102, 126, 234, 0.5);
  background: linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(255,255,255,0.95) 100%);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1), inset 0 2px 12px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(102, 126, 234, 0.5);
  font-style: italic;
}

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

.form-error {
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--error-600);
  font-weight: var(--font-weight-medium);
}

.form-help {
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ===== 히어로 섹션 ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg-cream);
}




.hero-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.2) 50%, rgba(0, 0, 0, 0.3) 100%);
  z-index: 2;
  display: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: white;
  max-width: 600px;
  margin: 0 auto;
  padding: 0 30px;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: saturate(120%) blur(2px);
  -webkit-backdrop-filter: saturate(120%) blur(2px);
  border-radius: 16px;
  box-shadow: 0 6px 24px rgba(0,0,0,.25);
}

.hero-title {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  letter-spacing: -0.02em;

}

@media (min-width: 768px) {
  .hero-title {
    font-size: clamp(1.75rem, 5vw, 2.75rem);
  
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
}

.hero-subtitle {
  font-size: clamp(0.95rem, 1.2vw + .6rem, 1.15rem);
  font-weight: 500;
  line-height: 1.6;
  margin-bottom: 20px;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
  opacity: 0.95;

}

@media (min-width: 768px) {
  .hero-subtitle {
    font-size: clamp(0.95rem, 1.2vw + .6rem, 1.15rem);
  
  line-height: 1.5;
  margin-bottom: 20px;
}
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .hero {
    min-height: 70vh;
  }
  
  .hero-overlay {
  display: none;
}
  
  .hero-content {
    max-width: 90%;
    padding: 0 20px;
  position: relative;
  z-index: 3;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: saturate(120%) blur(2px);
  -webkit-backdrop-filter: saturate(120%) blur(2px);
  border-radius: 16px;
  margin: 0 auto;
  color: #fff;
  text-align: center;
  box-shadow: 0 6px 24px rgba(0,0,0,.25);
}
  
  .hero-title {
    font-size: clamp(1.75rem, 5vw, 2.75rem);
    line-height: 1.3;
    margin-bottom: 20px;
  
  letter-spacing: -0.02em;
}
  
  .hero-subtitle {
    font-size: clamp(0.95rem, 1.2vw + .6rem, 1.15rem);
    margin-bottom: 20px;
  
  line-height: 1.5;
}
}

@media (max-width: 480px) {
  .hero {
    min-height: 60vh;
  }
  
  .hero-overlay {
  display: none;
}
  
  .hero-content {
    max-width: 95%;
    padding: 0 12px;
  position: relative;
  z-index: 3;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: saturate(120%) blur(2px);
  -webkit-backdrop-filter: saturate(120%) blur(2px);
  border-radius: 16px;
  margin: 0 auto;
  color: #fff;
  text-align: center;
  box-shadow: 0 6px 24px rgba(0,0,0,.25);
}
  
  .hero-title {
    font-size: clamp(1.75rem, 5vw, 2.75rem);
    margin-bottom: 16px;
  
  line-height: 1.15;
  letter-spacing: -0.02em;
}
  
  .hero-subtitle {
    font-size: clamp(0.95rem, 1.2vw + .6rem, 1.15rem);
    margin-bottom: 20px;
  
  line-height: 1.5;
}
}

/* ===== 섹션 헤더 ===== */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
  position: relative;
}

.section-header::before {
  content: attr(data-eyebrow);
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--primary-600);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .section-title {
    font-size: var(--font-size-5xl);
  }
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--line-height-relaxed);
}

/* ===== 친구 카드 ===== */
.friends-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

@media (max-width: 640px) {
  .friends-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

.friend-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(255,255,255,0.92) 100%);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  position: relative;
}

.friend-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-rainbow);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.friend-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-2xl);
}

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

.friend-image {
  position: relative;
  width: 100%;
  height: 240px;
  overflow: hidden;
}

.friend-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.friend-card:hover .friend-image img {
  transform: scale(1.1);
}

.heart-badge {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  background: linear-gradient(135deg, #e0245e 0%, #c91c5c 100%);
  color: var(--text-inverse);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(8px);
  transition: all var(--transition-fast);
}

.heart-badge:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.friend-info {
  padding: var(--space-6);
}

.friend-name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.friend-age {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-3);
  font-weight: var(--font-weight-medium);
}

.friend-specialties {
  color: var(--primary-600);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.friend-description {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
}

.friend-languages {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.language {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.05) 100%);
  color: var(--primary-700);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border: 1px solid rgba(102, 126, 234, 0.2);
}

.friend-price {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin-bottom: var(--space-5);
}

.price {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.duration {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.cta-btn {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--gradient-primary);
  color: var(--text-inverse);
  border: none;
  border-radius: var(--radius-lg);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  position: relative;
  overflow: hidden;
}

.cta-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s ease;
}

.cta-btn:hover::before {
  left: 100%;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.cta-btn.is-faved {
  background: var(--gradient-secondary);
}

/* ===== 리뷰 카드 ===== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

@media (max-width: 640px) {
  .reviews-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

.review-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(255,255,255,0.92) 100%);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.review-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl);
}

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

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

.reviewer-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.reviewer-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid rgba(255,255,255,0.6);
  box-shadow: var(--shadow-md);
}

.reviewer-name {
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0;
  font-size: var(--font-size-base);
}

.review-text {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-4);
  font-style: italic;
  position: relative;
  padding-left: var(--space-4);
}

.review-text::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -8px;
  font-size: var(--font-size-3xl);
  color: rgba(102, 126, 234, 0.2);
  font-family: serif;
  line-height: 1;
}

.review-rating {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
  color: #fbbf24;
}

.review-date {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  margin: 0;
}

.review-mate {
  margin-top: var(--space-3);
  padding: var(--space-3);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(240, 147, 251, 0.03) 100%);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  border: 1px solid rgba(102, 126, 234, 0.1);
}

/* ===== 단계 컴포넌트 ===== */
.steps {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.step {
  text-align: center;
  position: relative;
  padding: var(--space-8);
  background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(255,255,255,0.92) 100%);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  overflow: hidden;
}

.step::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0.6;
}

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

.step:hover::before {
  opacity: 1;
  height: 4px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  color: var(--text-inverse);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-lg);
}

.step-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.step-description {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

.step-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: var(--gradient-accent);
  color: var(--text-inverse);
  border-radius: var(--radius-full);
  font-size: var(--font-size-2xl);
  margin: var(--space-6) auto;
  box-shadow: var(--shadow-lg);
}

/* ===== 특징 카드 ===== */
.features {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .features {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature {
  text-align: center;
  padding: var(--space-8);
  background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(255,255,255,0.92) 100%);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-2xl);
}

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

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: var(--gradient-primary);
  color: var(--text-inverse);
  border-radius: var(--radius-full);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-lg);
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.feature-description {
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ===== 안전 섹션 ===== */
.safety {
  padding: var(--space-20) 0;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.03) 0%, rgba(240, 147, 251, 0.02) 100%);
  position: relative;
}

.safety-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.safety-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(255,255,255,0.92) 100%);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 28px;
  padding: 48px 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.08), 0 8px 24px rgba(0,0,0,0.04);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  min-height: 480px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: flex-start;
  gap: 24px;
}

.safety-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, #667eea 0%, #764ba2 33%, #f093fb 66%, #f5576c 100%);
  opacity: 0.8;
}

.safety-card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 32px 80px rgba(0,0,0,0.12), 0 12px 32px rgba(0,0,0,0.08);
  border-color: rgba(102, 126, 234, 0.3);
}

.safety-card:hover::before {
  opacity: 1;
  height: 6px;
}

.safety-media {
  width: 240px;
  height: 240px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(240, 147, 251, 0.05) 100%);
  border: 2px solid rgba(102, 126, 234, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  box-shadow: 0 12px 32px rgba(102, 126, 234, 0.15);
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
  flex-shrink: 0;
}

.safety-media img {
  width: 180px;
  height: 180px;
  object-fit: contain;
  transition: transform 0.3s ease;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.1));
}

.safety-card:hover .safety-media {
  transform: scale(1.05);
  box-shadow: 0 16px 40px rgba(102, 126, 234, 0.2);
}

.safety-card:hover .safety-media img {
  transform: scale(1.1);
}

.safety-copy {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  gap: 16px;
}

.safety-copy h3 {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.safety-copy p {
  font-size: 1.3rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin: 0 auto;
  max-width: 280px;
  font-weight: 500;
}

.safety-copy strong {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

/* Safety 섹션 반응형 */
@media (max-width: 768px) {
  .safety-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .safety-card {
    min-height: 420px;
    padding: 40px 28px;
    gap: 20px;
  }
  
  .safety-media {
    width: 200px;
    height: 200px;
  }
  
  .safety-media img {
    width: 160px;
    height: 160px;
  }
  
  .safety-copy h3 {
    font-size: 1.8rem;
  }
  
  .safety-copy p {
    font-size: 1.2rem;
    max-width: 240px;
  }
}

@media (max-width: 480px) {
  .safety-card {
    min-height: 380px;
    padding: 36px 24px;
  }
  
  .safety-media {
    width: 180px;
    height: 180px;
  }
  
  .safety-media img {
    width: 140px;
    height: 140px;
  }
  
  .safety-copy h3 {
    font-size: 1.6rem;
  }
  
  .safety-copy p {
    font-size: 1.1rem;
    max-width: 220px;
  }
}

/* ===== 어바웃 섹션 ===== */
.about {
  padding: var(--space-20) 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, rgba(248,250,252,0.9) 100%);
  position: relative;
  overflow: hidden;
}

.about-content {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 1024px) {
  .about-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

.about-text {
  max-width: 600px;
}
/* About 이미지 갤러리 컨테이너 */
.about-images {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  position: relative;
}

@media (min-width: 640px) {
  .about-images {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .about-images {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }
}

.about-photo {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  transition: all var(--transition-base);
  aspect-ratio: 16/10;
  background: var(--bg-primary);
}

.about-photo:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-2xl);
}

.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: transform var(--transition-base);
  background: var(--bg-primary);
}

.about-photo:hover img {
  transform: scale(1.02);
}

.about-gallery {
  order: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

@media (min-width: 1024px) {
  .about-gallery {
    order: 2;
    grid-template-columns: 1fr;
  }
}

.about-text {
  order: 2;
}

@media (min-width: 1024px) {
  .about-text {
    order: 1;
  }
}

.about-photo:nth-child(3) {
  grid-column: span 1;
}

@media (min-width: 640px) {
  .about-photo:nth-child(3) {
    grid-column: 1 / -1;
    max-width: 500px;
    margin: 0 auto;
  }
}

.lead-copy {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-6);
  line-height: var(--line-height-snug);
}

.benefits {
  list-style: none;
  margin: var(--space-8) 0;
}

.benefits li {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding: var(--space-5);
  background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.benefits li:hover {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(240, 147, 251, 0.03) 100%);
  border-color: rgba(102, 126, 234, 0.2);
  transform: translateX(var(--space-2));
  box-shadow: var(--shadow-md);
}

.benefits .icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  color: var(--text-inverse);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
  margin-top: var(--space-1);
  box-shadow: var(--shadow-md);
}

.benefits .text {
  flex: 1;
}

.benefits .text strong {
  display: block;
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.about-quote {
  background: var(--gradient-primary);
  color: var(--text-inverse);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  text-align: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-relaxed);
  position: relative;
  margin-top: var(--space-8);
  box-shadow: var(--shadow-xl);
}

.quote-mark {
  font-size: var(--font-size-4xl);
  font-family: serif;
  opacity: 0.7;
  background-color: rgba(102, 126, 234, 0.05);
  position: absolute;
  top: var(--space-4);
  left: var(--space-6);
}

/* ===== 스와이프 카드 시스템 ===== */
.swipe-container {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  overflow: hidden;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.1);
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
  backdrop-filter: blur(10px);
}

.swipe-wrapper {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  width: 100%;
}

.swipe-slide {
  flex: 0 0 100%;
  width: 100%;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.swipe-slide.active {
  opacity: 1;
}

/* About 카드 스타일 */
.about-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 40px;
  background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.85) 100%);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 24px;
  position: relative;
  overflow: hidden;
  min-height: 400px;
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #667eea 0%, #764ba2 33%, #f093fb 66%, #f5576c 100%);
  opacity: 0.8;
}

.about-card-image {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0,0,0,0.15);
  transition: all 0.3s ease;
  aspect-ratio: 4/3;
  width: 100%;
}

.about-card-image:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 24px 60px rgba(0,0,0,0.2);
}

.about-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: transform 0.3s ease;
  background: rgba(248, 249, 250, 0.5);
  border-radius: 16px;
}

.about-card-image:hover img {
  transform: scale(1.02);
}

.about-card-content {
  padding: 20px 0;
}

.about-card-content h3 {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.about-card-content p {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin: 0;
  font-weight: 500;
}

/* Safety 카드 스타일 */
.safety-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 40px;
  background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.85) 100%);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 24px;
  position: relative;
  overflow: hidden;
  min-height: 400px;
}

.safety-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #28a745 0%, #20c997 33%, #667eea 66%, #f093fb 100%);
  opacity: 0.8;
}

.safety-card-image {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0,0,0,0.15);
  transition: all 0.3s ease;
  aspect-ratio: 4/3;
  width: 100%;
}

.safety-card-image:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 24px 60px rgba(0,0,0,0.2);
}

.safety-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: transform 0.3s ease;
  background: rgba(248, 249, 250, 0.5);
  border-radius: 16px;
}

.safety-card-image:hover img {
  transform: scale(1.02);
}

.safety-card-content {
  padding: 20px 0;
}

.safety-card-content h3 {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.safety-card-content p {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin: 0;
  font-weight: 500;
}

/* 네비게이션 버튼 */
.swipe-nav {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  height: 50px;
  font-size: 1.2rem;
  backdrop-filter: blur(15px);
  border: 2px solid rgba(255,255,255,0.4);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-primary);
  transition: all 0.3s ease;
  z-index: 10;
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.swipe-nav:hover {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 12px 32px rgba(102, 126, 234, 0.3);
  border-color: transparent;
}

.swipe-prev {
  left: 20px;
}

.swipe-next {
  right: 20px;
}

/* 인디케이터 */
.swipe-indicators {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}

.indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  border: 2px solid rgba(102, 126, 234, 0.3);
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
}

.indicator:hover {
  background: rgba(102, 126, 234, 0.6);
  border-color: rgba(102, 126, 234, 0.8);
  transform: scale(1.2);
}

.indicator.active {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
  transform: scale(1.3);
}

/* 반응형 디자인 */
@media (max-width: 768px) {
  .about-card,
  .safety-card {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px;
    min-height: auto;
  }
  
  .about-card-image,
  .safety-card-image {
    aspect-ratio: 16/9;
    order: -1;
  }
  
  .about-card-content h3,
  .safety-card-content h3 {
    font-size: 1.4rem;
    text-align: center;
  }
  
  .about-card-content p,
  .safety-card-content p {
    font-size: 1rem;
    text-align: center;
  }
  
  .swipe-nav {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
  
  .swipe-prev {
    left: 12px;
  }
  
  .swipe-next {
    right: 12px;
  }
}

@media (max-width: 480px) {
  .about-card,
  .safety-card {
    padding: 20px;
    gap: 20px;
  }
  
  .about-card-image,
  .safety-card-image {
    aspect-ratio: 3/2;
  }
  
  .swipe-nav {
    width: 36px;
    height: 36px;
    font-size: 0.9rem;
  }
  
  .swipe-prev {
    left: 8px;
  }
  
  .swipe-next {
    right: 8px;
  }
}

/* 터치 스와이프 지원 */
.swipe-container {
  touch-action: pan-y;
  user-select: none;
}

.swipe-wrapper {
  cursor: grab;
}

.swipe-wrapper:active {
  cursor: grabbing;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
  .swipe-container {
    margin: 0 -20px;
    border-radius: 0;
  }
  
  .about-card,
  .safety-card {
    padding: 32px 24px;
    min-height: 450px;
    gap: 24px;
  }
  
  .about-card-content h3,
  .safety-card-content h3 {
    font-size: 1.5rem;
  }
  
  .about-card-content p,
  .safety-card-content p {
    font-size: 1rem;
  }
  
  .about-card-image {
    max-width: 250px;
    height: 160px;
  }
  
  .safety-card-image {
    width: 100px;
    height: 100px;
  }
  
  .safety-card-image img {
    width: 70px;
    height: 70px;
  }
  
  .swipe-nav {
    width: 48px;
    height: 48px;
    font-size: 1rem;
  }
  
  .swipe-prev {
    left: 12px;
  }
  
  .swipe-next {
    right: 12px;
  }
}

@media (max-width: 480px) {
  .about-card,
  .safety-card {
    padding: 24px 20px;
    min-height: 400px;
    gap: 20px;
  }
  
  .about-card-content h3,
  .safety-card-content h3 {
    font-size: 1.3rem;
  }
  
  .about-card-image {
    max-width: 200px;
    height: 140px;
  }
  
  .safety-card-image {
    width: 80px;
    height: 80px;
  }
  
  .safety-card-image img {
    width: 60px;
    height: 60px;
  }
  
  .swipe-nav {
    width: 40px;
    height: 40px;
    font-size: 0.9rem;
  }
  
  .swipe-prev {
    left: 8px;
  }
  
  .swipe-next {
    right: 8px;
  }
  
  .indicator {
    width: 10px;
    height: 10px;
  }
}

/* 애니메이션 효과 */
@keyframes shimmer {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

/* 접근성 개선 */
.swipe-nav:focus {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}

.indicator:focus {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}

/* 성능 최적화 */
.swipe-slide {
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* ===== 푸터 ===== */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr 2fr;
  }
}

.footer-brand {
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .footer-brand {
    margin-bottom: 0;
  }
}

.footer-brand .nav-brand {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-inverse);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.footer-brand .nav-brand img {
  height: 40px;
  width: auto;
}

.footer-description {
  color: var(--gray-400);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.footer-links {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 640px) {
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

.footer-column h4 {
  color: var(--text-inverse);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-base);
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: var(--space-2);
}

.footer-column a {
  color: var(--gray-400);
  transition: color var(--transition-fast);
  font-size: var(--font-size-sm);
}

.footer-column a:hover {
  color: var(--text-inverse);
}

.footer-bottom {
  border-top: 1px solid var(--gray-700);
  padding-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }
}

.business-info {
  font-size: var(--font-size-sm);
  color: var(--gray-400);
}

.footer-legal {
  display: flex;
  gap: var(--space-6);
  justify-content: center;
}

@media (min-width: 768px) {
  .footer-legal {
    justify-content: flex-end;
  }
}

.footer-legal a {
  font-size: var(--font-size-sm);
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: var(--text-inverse);
}

/* ===== FAQ 아코디언 ===== */
.faq-content {
  max-width: 800px;
  margin: 0 auto;
}

.faq-category {
  margin-bottom: var(--space-8);
}

.faq-category-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid rgba(102, 126, 234, 0.2);
}

.faq-item {
  background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(255,255,255,0.92) 100%);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  overflow: hidden;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.faq-item:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(102, 126, 234, 0.3);
}

.faq-item.active {
  border-color: rgba(102, 126, 234, 0.4);
  box-shadow: var(--shadow-xl);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  transition: all var(--transition-fast);
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
}

.faq-question:hover {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(240, 147, 251, 0.03) 100%);
}

.faq-item.active .faq-question {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(240, 147, 251, 0.05) 100%);
  color: var(--primary-700);
}

.faq-toggle {
  margin-left: auto;
  transition: transform var(--transition-base);
  color: var(--primary-500);
}

.faq-item.active .faq-toggle {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.03) 0%, rgba(240, 147, 251, 0.02) 100%);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding: var(--space-5) var(--space-6);
  margin: 0;
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ===== 플로팅 액션 버튼 ===== */
.floating-actions {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-fixed);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.floating-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-xl);
  transition: all var(--transition-base);
  text-decoration: none;
  color: var(--text-inverse);
  font-size: var(--font-size-lg);
  position: relative;
  overflow: hidden;
}

.floating-btn span {
  position: absolute;
  right: 70px;
  background: var(--gray-800);
  color: var(--text-inverse);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(10px);
  transition: all var(--transition-base);
  pointer-events: none;
  background: rgba(0, 0, 0, 0.4);
  padding: 12px 24px;
  border-radius: 20px;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  max-width: 90%;
  overflow: hidden;
  text-overflow: ellipsis;
}


@media (max-width: 480px) {
  
}

.floating-btn:hover span {
  opacity: 1;
  transform: translateX(0);
}

.floating-btn.insta {
  background: linear-gradient(135deg, #e4405f 0%, #c13584 100%);
}

.floating-btn.line {
  background: linear-gradient(135deg, #00c300 0%, #00b900 100%);
}

.floating-btn.x {
  background: linear-gradient(135deg, #1da1f2 0%, #0d8bd9 100%);
}

.floating-btn.book {
  background: var(--gradient-primary);
}

.floating-btn:hover {
  transform: translateY(-2px) scale(1.1);
  box-shadow: var(--shadow-2xl);
}

/* ===== 메시지 컴포넌트 ===== */
.alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-4);
  border: 2px solid transparent;
  backdrop-filter: blur(8px);
}

.alert-success {
  background: linear-gradient(135deg, #d1f2eb 0%, #a3e4d7 100%);
  color: #0e6b47;
  border-color: rgba(25, 135, 84, 0.3);
  box-shadow: 0 4px 12px rgba(25, 135, 84, 0.2);
}

.alert-error {
  background: linear-gradient(135deg, #fadbd8 0%, #f1948a 100%);
  color: #922b21;
  border-color: rgba(220, 53, 69, 0.3);
  box-shadow: 0 4px 12px rgba(220, 53, 69, 0.2);
}

.alert-warning {
  background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
  color: #856404;
  border-color: rgba(255, 193, 7, 0.3);
  box-shadow: 0 4px 12px rgba(255, 193, 7, 0.2);
}

.alert-info {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(240, 147, 251, 0.05) 100%);
  color: var(--primary-800);
  border-color: rgba(102, 126, 234, 0.3);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

/* ===== 배지 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background: linear-gradient(135d, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.05) 100%);
  color: var(--primary-800);
  border: 1px solid rgba(102, 126, 234, 0.2);
}

.badge-secondary {
  background: linear-gradient(135deg, rgba(240, 147, 251, 0.1) 0%, rgba(245, 87, 108, 0.05) 100%);
  color: var(--secondary-800);
  border: 1px solid rgba(240, 147, 251, 0.2);
}

.badge-success {
  background: var(--success-100);
  color: var(--success-800);
  border: 1px solid var(--success-200);
}

.badge-warning {
  background: var(--warning-100);
  color: var(--warning-800);
  border: 1px solid var(--warning-200);
}

.badge-error {
  background: var(--error-100);
  color: var(--error-800);
  border: 1px solid var(--error-200);
}

/* ===== 로딩 애니메이션 ===== */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(102, 126, 234, 0.2);
  border-radius: var(--radius-full);
  border-top-color: var(--primary-500);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-lg {
  width: 40px;
  height: 40px;
  border-width: 4px;
}

/* ===== 애니메이션 ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  transform: translateX(-30px);
}

.reveal-right {
  transform: translateX(30px);
}

.reveal-left.in,
.reveal-right.in {
  transform: translateX(0);
}

/* ===== 유틸리티 클래스 ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }

.font-light { font-weight: var(--font-weight-light); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }
.font-extrabold { font-weight: var(--font-weight-extrabold); }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }

.bg-primary { background: var(--bg-primary); }
.bg-secondary { background: var(--bg-secondary); }
.bg-tertiary { background: var(--bg-tertiary); }
.bg-cream { background: var(--bg-cream); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded { border-radius: var(--radius-base); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-base); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-2xl { box-shadow: var(--shadow-2xl); }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.inline { display: inline; }

.w-full { width: 100%; }
.h-full { height: 100%; }
.min-h-screen { min-height: 100vh; }

.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.top-0 { top: 0; }
.left-0 { left: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }

.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }

.overflow-hidden { overflow: hidden; }
.overflow-x-hidden { overflow-x: hidden; }
.overflow-y-auto { overflow-y: auto; }

/* ===== 반응형 유틸리티 ===== */
@media (max-width: 639px) {
  .sm\:hidden { display: none; }
}

@media (min-width: 640px) {
  .sm\:block { display: block; }
  .sm\:flex { display: flex; }
  .sm\:grid { display: grid; }
  .sm\:hidden { display: none; }
}

@media (min-width: 768px) {
  .md\:block { display: block; }
  .md\:flex { display: flex; }
  .md\:grid { display: grid; }
  .md\:hidden { display: none; }
  .md\:text-left { text-align: left; }
  .md\:text-center { text-align: center; }
}

@media (min-width: 1024px) {
  .lg\:block { display: block; }
  .lg\:flex { display: flex; }
  .lg\:grid { display: grid; }
  .lg\:hidden { display: none; }
}

/* ===== 스크롤 프로그레스 바 ===== */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: var(--gradient-rainbow);
  z-index: var(--z-toast);
  transition: width 0.1s ease;
}

/* ===== 토스트 메시지 ===== */
.toast {
  position: fixed;
  top: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: var(--text-inverse);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  z-index: var(--z-toast);
  font-weight: var(--font-weight-semibold);
  box-shadow: var(--shadow-xl);
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* ===== 접근성 개선 ===== */
.skip-link {
  position: absolute;
  top: -40px;
  left: var(--space-2);
  background: var(--primary-600);
  color: var(--text-inverse);
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  border-radius: var(--radius-base);
  z-index: var(--z-tooltip);
  transition: top var(--transition-base);
}

.skip-link:focus {
  top: var(--space-2);
}

/* 포커스 스타일 */
*:focus {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

.btn:focus,
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
}

/* ===== 필터 버튼 ===== */
.friend-filters {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.quick-filter {
  padding: var(--space-3) var(--space-6);
  border: 2px solid rgba(102, 126, 234, 0.2);
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  position: relative;
  overflow: hidden;
}

.quick-filter::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  transition: left 0.5s ease;
}

.quick-filter:hover::before {
  left: 100%;
}

.quick-filter:hover {
  border-color: rgba(102, 126, 234, 0.4);
  background: linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(255,255,255,0.9) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.quick-filter.active {
  background: var(--gradient-primary);
  color: var(--text-inverse);
  border-color: transparent;
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
  transform: translateY(-2px) scale(1.05);
}

/* ===== 친구 액션 ===== */
.friends-actions {
  text-align: center;
  margin-top: var(--space-8);
}

/* ===== 프린트 스타일 ===== */
@media print {
  .floating-actions,
  .mobile-menu,
  #scroll-progress {
    display: none !important;
  }
  
  .hero {
    min-height: auto;
    padding: var(--space-8) 0;
  }
  
  .section {
    padding: var(--space-8) 0;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid var(--gray-300);
  }
}

/* ===== 모션 감소 설정 ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===== 고대비 모드 지원 ===== */
@media (prefers-contrast: high) {
  .card {
    border-width: 2px;
    border-color: var(--gray-400);
  }
  
  .btn {
    border-width: 2px;
  }
  
  .form-input,
  .form-select,
  .form-textarea {
    border-width: 2px;
    border-color: var(--gray-400);
  }
}

/* ===== 성공/오류 상태 (기존 스타일과 호환) ===== */
.success {
  background: linear-gradient(135deg, #d1f2eb 0%, #a3e4d7 100%);
  color: #0e6b47;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  border: 2px solid rgba(25, 135, 84, 0.3);
  font-weight: var(--font-weight-semibold);
  box-shadow: 0 4px 12px rgba(25, 135, 84, 0.2);
}

.error {
  background: linear-gradient(135deg, #fadbd8 0%, #f1948a 100%);
  color: #922b21;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  border: 2px solid rgba(220, 53, 69, 0.3);
  font-weight: var(--font-weight-semibold);
  box-shadow: 0 4px 12px rgba(220, 53, 69, 0.2);
}

.muted {
  color: var(--text-secondary);
  font-style: italic;
  text-align: center;
  padding: var(--space-10) var(--space-5);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.03) 100%);
  border-radius: var(--radius-lg);
  border: 2px dashed rgba(102, 126, 234, 0.2);
}

/* ===== 기존 클래스 호환성 ===== */
.stack-16 {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.row {
  display: flex;
  gap: var(--space-4);
  height: 200px;
}

.row.single {
  max-width: 120px;
  max-height: 120px;
  width: auto;
  height: auto;
}

.field {
  flex: 1;
  min-width: 200px;
}

.label {
  display: block;
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.input,
.select,
.textarea {
  width: 100%;
  padding: var(--space-4) var(--space-5);
  border: 2px solid rgba(102, 126, 234, 0.2);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.85) 100%);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  backdrop-filter: blur(8px);
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.04);
}

.input:focus,
.select:focus,
.textarea:focus {
  outline: none;
  border-color: rgba(102, 126, 234, 0.5);
  background: linear-gradient(135deg, rgba(255,255,255,1) 0%, rgba(255,255,255,0.95) 100%);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1), inset 0 2px 12px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}

.textarea {
  min-height: 120px;
  resize: vertical;
  line-height: var(--line-height-relaxed);
}

.input::placeholder,
.textarea::placeholder {
  color: rgba(102, 126, 234, 0.5);
  font-style: italic;
}

.spacer {
  height: var(--space-6);
}

.media {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

.round {
  border-radius: var(--radius-full);
}

.chips {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.chip {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.05) 100%);
  color: var(--primary-700);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border: 1px solid rgba(102, 126, 234, 0.2);
}

/* ===== 페이지 레이아웃 ===== */
.page {
  min-height: 100vh;
  padding: var(--space-8) 0;
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 768px) {
  .page {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

/* ===== 반응형 조정 ===== */
@media (max-width: 640px) {
  .hero-title {
    font-size: clamp(1.75rem, 5vw, 2.75rem);
  
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .friends-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .reviews-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .steps {
    gap: var(--space-6);
  }
  
  .features {
    gap: var(--space-6);
  }
  
  .safety-grid {
    gap: var(--space-6);
  }
  
  .floating-actions {
    bottom: var(--space-4);
    right: var(--space-4);
  }
  
  .floating-btn {
    width: 48px;
    height: 48px;
    font-size: var(--font-size-base);
  }
  
  .row:not(.single) {
    flex-direction: column;
  }
  
  .field {
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-3);
  }
  
  .hero-content {
    padding: var(--space-6);
  position: relative;
  z-index: 3;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: saturate(120%) blur(2px);
  -webkit-backdrop-filter: saturate(120%) blur(2px);
  border-radius: 16px;
  margin: 0 auto;
  max-width: min(92%, 36rem);
  color: #fff;
  text-align: center;
  box-shadow: 0 6px 24px rgba(0,0,0,.25);
}
  
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn-xl {
    padding: var(--space-4) var(--space-6);
    font-size: var(--font-size-base);
  }
  
  .friend-info {
    padding: var(--space-4);
  }
  
  .step,
  .feature,
  .safety-card {
    padding: var(--space-6);
  }
  
  .review-card {
    padding: var(--space-4);
  }
}

@media (min-width: 768px) {
  .about-photo img {
    height: 320px;
  }
  
  .about-photo:first-child img {
    height: 280px;
  }
}

/* ===== 성능 최적화 ===== */
.will-change-transform {
  will-change: transform;
}

.will-change-opacity {
  will-change: opacity;
}

/* GPU 가속 활성화 */
.card,
.friend-card,
.review-card,
.step,
.feature,
.safety-card {
  transform: translateZ(0);
}

/* === Hero 2-b responsive tweaks (injected) === */
@media (min-width: 768px){
  .hero-content{
    padding: 22px 24px;
    text-align: left;
    max-width: min(70ch, 600px);
  }
  .hero-title{
    font-size: clamp(2rem, 3.2vw, 3rem);
  }
}
@media (min-width: 1024px){
  .hero-content{ border-radius: 18px; }
}