/* Landing Page Main Styles */

/* ===== 모든 OS에서 완전 동일한 시각적 경험 제공 ===== */
/* 색상 강제 통일 - 모든 OS/브라우저에서 동일한 색상 보장 */
* {
  -webkit-color-adjust: exact !important;
  color-adjust: exact !important;
  print-color-adjust: exact !important;
}

/* 폰트 렌더링 완전 통일 - Windows/macOS/Linux 동일 렌더링 */
*, *::before, *::after {
  -webkit-font-smoothing: antialiased !important;
  -moz-osx-font-smoothing: grayscale !important;
  text-rendering: optimizeLegibility !important;
  font-kerning: normal !important;
  font-variant-ligatures: none !important;
}

/* 애니메이션 하드웨어 가속 최적화 - 필요한 요소만 선택적 적용 */
/* 실제 애니메이션되는 핵심 요소만 하드웨어 가속 */
.typing-cursor, .hero-badge {
  will-change: transform, opacity;
  backface-visibility: hidden;
  transform: translateZ(0);
}

/* 호버/클릭 시에만 하드웨어 가속 활성화 */
.cta-button:hover {
  will-change: transform;
  backface-visibility: hidden;
}

/* 애니메이션 완료 후 하드웨어 가속 해제 */
.animation-complete {
  will-change: auto;
}

/* 스크롤바 완전 통일 - 모든 OS에서 동일한 스크롤바 */

/* CSS Custom Properties for Theme Colors */
:root {
  --orange-50: #fff7ed;
  --orange-100: #ffedd5;
  --orange-200: #fed7aa;
  --orange-300: #fdba74;
  --orange-400: #fb923c;
  --orange-500: #f97316;
  --orange-600: #ea580c;
  --orange-700: #c2410c;
  --orange-800: #9a3412;
  --orange-900: #7c2d12;
  
  --red-400: #f87171;
  --red-500: #ef4444;
  --red-600: #dc2626;
  --red-900: #7f1d1d;
  
  --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;
  
  --white: #ffffff;
  --black: #000000;
  
  /* Typography */
  --font-light: 300;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-black: 900;
  
  /* Spacing - 일관된 여백 시스템 (확대됨) */
  --section-padding-hero: 4rem 0;
  --section-padding-primary: 7rem 0;
  --section-padding-secondary: 7rem 0;
  --section-padding-default: 7rem 0;
  --section-header-margin: 4rem;
  --container-max-width: 1280px;
  --container-padding: 0 1.5rem;
  
  /* 반응형 여백 시스템 (확대됨) */
  --section-padding-mobile: 4rem 0;
  --section-padding-primary-mobile: 4rem 0;
  --section-padding-secondary-mobile: 4rem 0;
  --section-header-margin-mobile: 2.5rem;
  
  /* Animation Timing */
  --duration-fast: 0.3s;
  --duration-normal: 0.5s;
  --duration-slow: 0.8s;
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
}

/* Reset and Base Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--gray-900);
  background-color: var(--white);
  overflow-x: hidden;
  
  /* 크로스 브라우저 폰트 렌더링 일관성 */
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern" 1;
  font-display: swap;
}

/* Utility Classes */
.section-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: var(--container-padding);
  position: relative;
  z-index: 10;
}

.section-header {
  text-align: center;
  margin-bottom: var(--section-header-margin);
  opacity: 0;
  transform: translateY(2rem);
  transition: all var(--duration-slow) var(--ease-out);
}

.section-header.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.badge-inner {
  background: var(--orange-50);
  background: -webkit-linear-gradient(135deg, var(--orange-50), var(--orange-100));
  background: -moz-linear-gradient(135deg, var(--orange-50), var(--orange-100));
  background: linear-gradient(135deg, var(--orange-50), var(--orange-100));
  border: 2px solid var(--orange-200);
  border-radius: 9999px;
  padding: 0.75rem 2rem;
  box-shadow: 0 4px 20px rgba(249, 115, 22, 0.1);
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-in-out);
}

.badge-inner:hover {
  box-shadow: 0 8px 30px rgba(249, 115, 22, 0.2);
}

.badge-text {
  color: var(--orange-700);
  font-weight: var(--font-bold);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  z-index: 10;
}

.section-title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: var(--font-black);
  color: var(--gray-900);
  margin-bottom: 2rem;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.title-highlight {
  background: var(--orange-500);
  background: -webkit-linear-gradient(135deg, var(--orange-300), var(--orange-500), var(--orange-600));
  background: -moz-linear-gradient(135deg, var(--orange-300), var(--orange-500), var(--orange-600));
  background: linear-gradient(135deg, var(--orange-300), var(--orange-500), var(--orange-600));
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  -moz-text-fill-color: transparent;
  color: transparent;
  animation: gradientShift 3s ease-in-out infinite;
  
  /* 폰트 렌더링 일관성 */
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.section-description {
  font-size: 1.25rem;
  color: var(--gray-600);
  max-width: 48rem;
  margin: 0 auto;
  line-height: 1.7;
  font-weight: var(--font-light);
}

.description-highlight {
  color: var(--orange-600);
  font-weight: var(--font-semibold);
}

/* Hero Section */
.hero-section {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  height: calc(100vh - 64px);
  min-height: 600px;
}

.hero-background {
  position: absolute;
  inset: 0;
}

.hero-bg-image {
  position: absolute;
  inset: 0;
  background-image: url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?ixlib=rb-4.0.3&auto=format&fit=crop&w=2072&q=80');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transform: translateY(var(--parallax-offset, 0)) scale(1.1);
  transition: transform 0.1s ease-out;
}



.hero-dark-overlay {
  position: absolute;
  inset: 0;
  background: rgba(17, 24, 39, 0.7);
  background: -webkit-linear-gradient(135deg, rgba(17, 24, 39, 0.7) 0%, rgba(154, 52, 18, 0.65) 50%, rgba(127, 29, 29, 0.7) 100%);
  background: -moz-linear-gradient(135deg, rgba(17, 24, 39, 0.7) 0%, rgba(154, 52, 18, 0.65) 50%, rgba(127, 29, 29, 0.7) 100%);
  background: linear-gradient(135deg, rgba(17, 24, 39, 0.7) 0%, rgba(154, 52, 18, 0.65) 50%, rgba(127, 29, 29, 0.7) 100%);
}

.hero-content {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
  opacity: 0;
  transform: translateY(3rem);
  animation: heroContentFadeIn 1s var(--ease-out) 0.5s forwards;
  
  /* 하드웨어 가속 및 크로스 브라우저 최적화 */
  will-change: transform, opacity;
  backface-visibility: hidden;
  transform-style: preserve-3d;
}

@keyframes heroContentFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-inner {
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  opacity: 0;
  transform: scale(0.8) translateY(1.25rem);
  animation: badgeFadeIn 0.8s var(--ease-out) 0.7s forwards;
}

@keyframes badgeFadeIn {
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.hero-badge .badge-inner {
  background: rgba(255, 255, 255, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 0 20px rgba(249, 115, 22, 0.3);
  animation: badgeGlow 2s ease-in-out infinite;
  /* backdrop-filter 제거 - 성능 최적화 */
}

@keyframes badgeGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(249, 115, 22, 0.3); }
  50% { box-shadow: 0 0 40px rgba(249, 115, 22, 0.5); }
}

.hero-badge .badge-text {
  color: rgba(255, 255, 255, 0.9) !important;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-badge .badge-icon {
  font-size: 0.95rem !important;
  width: 0.95rem !important;
  height: 0.95rem !important;
}

.hero-badge.hero-main-badge,
.hero-badge.hero-main-badge.visible {
  margin-bottom: 0.5rem !important;
}

.hero-title-container {
  margin-bottom: 3rem;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-weight: var(--font-black);
  color: #ffffff !important;
  line-height: 0.85;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
}

.title-animated {
  position: relative;
  display: inline-block;
}

.title-gradient {
  background: #fb923c;
  background: linear-gradient(45deg, #fb923c, #ffffff);
  background: -webkit-linear-gradient(45deg, #fb923c, #ffffff);
  background: -moz-linear-gradient(45deg, #fb923c, #ffffff);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  -moz-text-fill-color: transparent;
  color: transparent;
  
  /* 폰트 렌더링 일관성 */
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  
  /* 하드웨어 가속 */
  will-change: background-position;
  backface-visibility: hidden;
}


.typing-cursor {
  display: inline-block;
  width: 4px;
  height: 0.9em;
  background-color: var(--orange-400);
  margin-left: 0.01rem;
  vertical-align: -0.1em;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}




.title-secondary {
  display: inline-block;
  color: #ffffff !important;
  opacity: 0;
  transform: translateY(1.25rem);
  animation: fadeInUp 0.8s ease-out 2.2s forwards;
  margin-top: 1.5rem;
}


.hero-description {
  margin-bottom: 4rem;
  opacity: 0;
  transform: translateY(1.875rem);
  animation: fadeInUp 0.8s ease-out 2.6s forwards;
}


.hero-description p {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  color: #ffedd5 !important;
  max-width: 64rem;
  margin: 0 auto;
  line-height: 1.7;
  font-weight: var(--font-light);
}

.hero-cta-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  opacity: 0;
  transform: translateY(2.5rem);
  animation: fadeInUp 0.8s ease-out 3.2s forwards;
}


@media (min-width: 640px) {
  .hero-cta-buttons {
    flex-direction: row;
  }
}

.cta-button-wrapper {
  perspective: 1000px;
}

.cta-button {
  position: relative;
  min-width: 260px;
  padding: 1.5rem 4rem;
  font-size: 1.25rem;
  border-radius: 1rem;
  font-weight: var(--font-semibold);
  border: none;
  cursor: pointer;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-in-out);
  transform-style: preserve-3d;
}

.cta-button:hover {
  transform: scale(1.05) translateY(-5px) rotateX(5deg) rotateY(5deg);
}

.cta-button:active {
  transform: scale(0.95);
}

.cta-primary {
  background: #f97316;
  background: linear-gradient(135deg, #f97316, #ea580c);
  background: -webkit-linear-gradient(135deg, #f97316, #ea580c);
  background: -moz-linear-gradient(135deg, #f97316, #ea580c);
  color: #ffffff !important;
  box-shadow: 0 10px 25px rgba(234, 88, 12, 0.3);
  
  /* 하드웨어 가속 */
  will-change: transform, box-shadow;
  backface-visibility: hidden;
}

.cta-primary:hover {
  background: linear-gradient(135deg, var(--orange-600), var(--orange-700));
  box-shadow: 0 20px 40px rgba(234, 88, 12, 0.4);
}

.cta-secondary {
  background: rgba(255, 255, 255, 0.25);
  border: 2px solid rgba(251, 146, 60, 0.5);
  color: var(--orange-300);
  /* backdrop-filter 제거 - 성능 최적화 */
}

.cta-secondary:hover {
  background: rgba(249, 115, 22, 0.2);
  border-color: var(--orange-400);
  color: #ffffff !important;
}


.button-content {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.button-icon {
  font-size: 1.25rem;
}

.button-arrow {
  transition: transform var(--duration-normal) var(--ease-in-out);
}

.cta-button:hover .button-arrow {
  transform: translateX(5px);
  animation: arrowPulse 1.5s ease-in-out infinite;
}

@keyframes arrowPulse {
  0%, 100% { transform: translateX(5px); }
  50% { transform: translateX(10px); }
}

.button-target {
  transition: transform var(--duration-normal) var(--ease-in-out);
}

.cta-button:hover .button-target {
  animation: targetSpin 3s linear infinite;
}

@keyframes targetSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(1.25rem);
  animation: fadeInUp 0.8s ease-out 3.8s forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}



.scroll-text {
  margin-bottom: 0.75rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.6) !important;
  font-size: 0.875rem;
  font-weight: var(--font-medium);
  transition: color var(--duration-normal) var(--ease-in-out);
}


.scroll-arrow {
  color: rgba(255, 255, 255, 0.6) !important;
  transition: color var(--duration-normal) var(--ease-in-out);
}


.chevron-down {
  font-size: 2.5rem;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); opacity: 0.6; }
  50% { transform: translateY(10px); opacity: 1; }
}

/* Problem Section */
.problem-section {
  padding: var(--section-padding-primary);
  background-color: var(--white);
  position: relative;
  overflow: hidden;
}

.section-background {
  position: absolute;
  inset: 0;
  opacity: 0.03;
}

.bg-pattern {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 80%, rgba(249, 115, 22, 0.1) 0%, transparent 50%),
                    radial-gradient(circle at 80% 20%, rgba(249, 115, 22, 0.1) 0%, transparent 50%);
  transform: translateY(var(--parallax-offset, 0));
  transition: transform 0.1s ease-out;
}

/* 플로팅 배경 요소 제거됨 - 성능 최적화 */

.problems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: var(--section-header-margin);
}

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

@media (min-width: 1024px) {
  .problems-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.problem-card {
  background-color: var(--white);
  border: 2px solid var(--gray-100);
  border-radius: 1.5rem;
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-in-out);
  transform-style: preserve-3d;
  opacity: 0;
  transform: translateY(2rem);
}

.problem-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.problem-card:hover {
  transform: scale(1.05) translateY(-10px) rotateY(5deg) rotateX(5deg);
  border-color: var(--orange-200);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.card-background-hover {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.05), rgba(251, 146, 60, 0.03));
  border-radius: 1.5rem;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-in-out);
}

.problem-card:hover .card-background-hover {
  opacity: 1;
}

.card-glow {
  position: absolute;
  inset: 0;
  background-color: rgba(249, 115, 22, 0.05);
  border-radius: 1.5rem;
  filter: blur(40px);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-in-out);
}

.problem-card:hover .card-glow {
  opacity: 1;
}

.card-content {
  position: relative;
  z-index: 10;
}

.card-icon-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.card-icon {
  width: 4rem;
  height: 4rem;
  background: linear-gradient(135deg, var(--orange-50), var(--orange-100));
  border: 2px solid var(--orange-200);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange-600);
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-in-out);
}

.problem-card:hover .card-icon {
  background: linear-gradient(135deg, var(--orange-600), var(--orange-700));
  color: var(--white);
  transform: scale(1.1) rotate(-5deg);
}

.icon-background {
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, var(--orange-400), var(--orange-600));
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-in-out);
}

.problem-card:hover .icon-background {
  opacity: 1;
}

.icon-emoji {
  font-size: 1.5rem;
  position: relative;
  z-index: 10;
}


.card-title {
  font-size: 1.25rem;
  font-weight: var(--font-bold);
  color: var(--gray-900);
  margin-bottom: 1rem;
  transition: all var(--duration-normal) var(--ease-in-out);
}

.problem-card:hover .card-title {
  color: var(--orange-600);
  transform: translateX(5px);
}

.card-description {
  color: var(--gray-600);
  line-height: 1.7;
  font-weight: var(--font-light);
  transition: transform var(--duration-normal) var(--ease-in-out);
}

.problem-card:hover .card-description {
  transform: translateX(3px);
}

.card-accent-line {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--orange-400), var(--orange-600));
  border-radius: 0 0 1.5rem 1.5rem;
  width: 0;
  transition: width var(--duration-normal) var(--ease-in-out);
}

/* Remove hover effect for card accent line */

/* Empathy Message */
.empathy-message {
  text-align: center;
  margin-top: 5rem;
  opacity: 0;
  transform: translateY(3.125rem);
  transition: all var(--duration-slow) var(--ease-out);
}

.empathy-message.visible {
  opacity: 1;
  transform: translateY(0);
}

.empathy-card {
  background: linear-gradient(135deg, var(--orange-50), var(--orange-50));
  border: 2px solid var(--orange-200);
  border-radius: 1.5rem;
  padding: 4rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--duration-normal) var(--ease-in-out);
}

.empathy-card:hover {
  transform: scale(1.02);
}

.empathy-bg-decorations {
  position: absolute;
  inset: 0;
  opacity: 0.06;
}

.empathy-circle {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--orange-400), var(--orange-600));
}

.empathy-circle-1 {
  top: 0;
  left: 0;
  width: 384px;
  height: 384px;
  transform: translate(-50%, -50%);
  animation: empathyCircle1 20s linear infinite;
}

.empathy-circle-2 {
  bottom: 0;
  right: 0;
  width: 320px;
  height: 320px;
  transform: translate(50%, 50%);
  animation: empathyCircle2 25s linear infinite reverse;
}

@keyframes empathyCircle1 {
  0% { transform: translate(-50%, -50%) scale(1) rotate(0deg); }
  50% { transform: translate(-50%, -50%) scale(1.1) rotate(180deg); }
  100% { transform: translate(-50%, -50%) scale(1) rotate(360deg); }
}

@keyframes empathyCircle2 {
  0% { transform: translate(50%, 50%) scale(1.1) rotate(360deg); }
  50% { transform: translate(50%, 50%) scale(1) rotate(180deg); }
  100% { transform: translate(50%, 50%) scale(1.1) rotate(0deg); }
}

.empathy-content {
  position: relative;
  z-index: 10;
}

.empathy-emoji {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  animation: empathyFloat 3s ease-in-out infinite;
}

@keyframes empathyFloat {
  0%, 100% { transform: scale(1) rotate(0deg); }
  50% { transform: scale(1.1) rotate(5deg); }
}

.empathy-title {
  font-size: clamp(1.5rem, 4vw, 3rem);
  font-weight: var(--font-black);
  color: var(--gray-900);
  margin-bottom: 1.5rem;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.empathy-description {
  font-size: 1.25rem;
  color: var(--gray-600);
  line-height: 1.7;
  font-weight: var(--font-light);
  max-width: 32rem;
  margin: 0 auto 2rem;
}

.empathy-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--duration-normal) var(--ease-in-out);
}

.empathy-cta:hover {
  transform: scale(1.05);
}

.empathy-badge .badge-inner {
  background: var(--orange-100);
  border: 2px solid var(--orange-300);
  box-shadow: 0 4px 20px rgba(249, 115, 22, 0.2);
  animation: empathyBadgeGlow 2s ease-in-out infinite;
}

@keyframes empathyBadgeGlow {
  0%, 100% { box-shadow: 0 4px 20px rgba(249, 115, 22, 0.2); }
  50% { box-shadow: 0 8px 30px rgba(249, 115, 22, 0.3); }
}

.empathy-badge .badge-text {
  color: var(--orange-700);
  font-size: 1.125rem;
}

/* Detailed Features Section */
.detailed-features-section {
  padding: var(--section-padding-primary);
  background-color: var(--white);
  position: relative;
  overflow: hidden;
}

.detailed-features-pattern {
  background-image: radial-gradient(circle at 30% 40%, rgba(249, 115, 22, 0.1) 0%, transparent 50%),
                    radial-gradient(circle at 70% 60%, rgba(249, 115, 22, 0.1) 0%, transparent 50%);
}

.detailed-element-1 {
  left: 20%;
  top: 15%;
  width: 192px;
  height: 192px;
  animation: detailedFloat1 12s ease-in-out infinite;
}

.detailed-element-2 {
  left: 50%;
  top: 40%;
  width: 192px;
  height: 192px;
  animation: detailedFloat2 15s ease-in-out infinite 3s;
}

.detailed-element-3 {
  left: 80%;
  top: 65%;
  width: 192px;
  height: 192px;
  animation: detailedFloat3 12s ease-in-out infinite 6s;
}

@keyframes detailedFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.1; }
  50% { transform: translate(-50px, 50px) scale(1.5); opacity: 0.3; }
}

@keyframes detailedFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.1; }
  50% { transform: translate(40px, -40px) scale(1.5); opacity: 0.3; }
}

@keyframes detailedFloat3 {
  0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.1; }
  50% { transform: translate(-40px, 50px) scale(1.5); opacity: 0.3; }
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
  margin-bottom: var(--section-header-margin);
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.feature-card {
  background-color: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: 3rem;
  padding: 4rem;
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.08);
  transition: all 0.7s var(--ease-in-out);
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
  opacity: 0;
  transform: translateY(2rem);
}

.feature-card.visible {
  opacity: 1;
  transform: translateY(0);
}


.feature-card:active {
  transform: scale(0.98);
}

.feature-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--orange-50), var(--orange-100));
  opacity: 0.3;
  transition: opacity 0.5s var(--ease-in-out);
}


.feature-decoration {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--orange-100), var(--orange-200));
  opacity: 0.2;
  transition: opacity 0.5s var(--ease-in-out);
}

.feature-decoration-1 {
  top: -5rem;
  right: -5rem;
  width: 10rem;
  height: 10rem;
  animation: featureDecoration1 15s linear infinite;
}

.feature-decoration-2 {
  bottom: -2.5rem;
  left: -2.5rem;
  width: 8rem;
  height: 8rem;
  animation: featureDecoration2 20s linear infinite reverse;
}

.feature-card:hover .feature-decoration {
  opacity: 0.7;
}

@keyframes featureDecoration1 {
  0% { transform: scale(1) rotate(0deg); }
  50% { transform: scale(1.2) rotate(180deg); }
  100% { transform: scale(1) rotate(360deg); }
}

@keyframes featureDecoration2 {
  0% { transform: scale(1.1) rotate(360deg); }
  50% { transform: scale(1) rotate(180deg); }
  100% { transform: scale(1.1) rotate(0deg); }
}


.feature-content {
  position: relative;
  z-index: 10;
}

.feature-icon {
  width: 7rem;
  height: 7rem;
  background: linear-gradient(135deg, var(--orange-500), var(--orange-600));
  border-radius: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  margin-bottom: 3rem;
  box-shadow: 0 15px 40px rgba(249, 115, 22, 0.3);
  position: relative;
  overflow: hidden;
  transition: all 0.5s var(--ease-in-out);
}


.icon-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, var(--orange-400), var(--orange-600));
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-in-out);
}


.icon-inner {
  transform: scale(1.5);
  position: relative;
  z-index: 10;
  transition: transform var(--duration-normal) var(--ease-in-out);
  display: flex;
  align-items: center;
  justify-content: center;
  transform-origin: center center;
  line-height: 1;
}



.feature-card:hover .feature-icon {
  transform: scale(1.05);
}

.feature-card:hover .icon-inner {
  transform: scale(1.5);
}

.feature-card:hover .icon-bg-overlay {
  opacity: 0.4;
}


.feature-text {
  margin-bottom: 3rem;
}

.feature-title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: var(--font-black);
  color: var(--gray-900);
  margin-bottom: 1rem;
  line-height: 1.2;
  letter-spacing: -0.025em;
  transition: all var(--duration-normal) var(--ease-in-out);
}


.feature-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.25rem);
  font-weight: var(--font-bold);
  color: var(--gray-700);
  margin-bottom: 1.5rem;
  line-height: 1.4;
  transition: transform var(--duration-normal) var(--ease-in-out);
}


.feature-description {
  color: var(--gray-600);
  line-height: 1.7;
  font-weight: var(--font-light);
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  min-height: 96px;
  transition: transform var(--duration-normal) var(--ease-in-out);
}


.feature-benefits {
  margin-bottom: 3rem;
}

.benefits-title {
  font-size: 1.5rem;
  font-weight: var(--font-black);
  color: var(--gray-900);
  margin-bottom: 2rem;
  letter-spacing: -0.025em;
}

.benefits-list {
  display: grid;
  gap: 1rem;
}

.benefit-item {
  background-color: var(--white);
  border: 2px solid var(--gray-100);
  border-radius: 1.5rem;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  transition: all var(--duration-normal) var(--ease-in-out);
  opacity: 0;
  transform: translateX(-1.25rem);
  animation: benefitSlideIn 0.6s var(--ease-out) forwards;
}

.benefit-item:nth-child(1) { animation-delay: 0.1s; }
.benefit-item:nth-child(2) { animation-delay: 0.2s; }
.benefit-item:nth-child(3) { animation-delay: 0.3s; }
.benefit-item:nth-child(4) { animation-delay: 0.4s; }

@keyframes benefitSlideIn {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}


.benefit-icon {
  width: 1.5rem;
  height: 1.5rem;
  background: linear-gradient(135deg, var(--orange-500), var(--orange-600));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1rem;
  flex-shrink: 0;
}

.benefit-dot {
  width: 0.5rem;
  height: 0.5rem;
  background-color: var(--white);
  border-radius: 50%;
}

.benefit-text {
  color: var(--gray-800);
  font-weight: var(--font-semibold);
  font-size: 1.125rem;
  line-height: 1.6;
}

.feature-cta {
  position: relative;
}

.feature-button {
  width: 100%;
  padding: 1.5rem 0;
  font-size: 1.25rem;
  border-radius: 2rem;
  font-weight: var(--font-black);
  background: linear-gradient(135deg, var(--orange-500), var(--orange-600));
  color: var(--white);
  border: 2px solid var(--orange-400);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-in-out);
  transform-style: preserve-3d;
}


.feature-button:active {
  transform: scale(0.98);
}

.button-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, var(--orange-400), var(--orange-600));
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-in-out);
}

.feature-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.2);
}

.button-content {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.button-dot {
  width: 0.5rem;
  height: 0.5rem;
  background-color: var(--white);
  border-radius: 50%;
  animation: buttonDotPulse 1.5s ease-in-out infinite;
}

@keyframes buttonDotPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.5); opacity: 0.5; }
}

.button-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  border-radius: 2rem;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-in-out);
}


.feature-accent-line {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 0.5rem;
  background: linear-gradient(90deg, var(--orange-400), var(--orange-600));
  border-radius: 0 0 3rem 3rem;
  width: 0;
  transition: width 0.6s var(--ease-in-out);
}


/* Responsive adjustments for features */
@media (max-width: 1023px) {
  .feature-card {
    padding: 3rem;
  }
  
  .feature-icon {
    width: 6rem;
    height: 6rem;
  }
  
  .icon-inner {
    transform: scale(1.3);
  }
}

@media (max-width: 767px) {
  /* 반응형 여백 시스템 */
  .problem-section {
    padding: var(--section-padding-primary-mobile);
  }
  
  .solution-section {
    padding: var(--section-padding-primary-mobile);
  }
  
  .detailed-features-section {
    padding: var(--section-padding-primary-mobile);
  }
  
  .research-process-section {
    padding: var(--section-padding-primary-mobile);
  }
  
  .career-value-section {
    padding: var(--section-padding-primary-mobile);
  }
  
  .testimonials-section {
    padding: var(--section-padding-primary-mobile);
  }
  
  .faq-section {
    padding: var(--section-padding-primary-mobile);
  }
  
  .section-header {
    margin-bottom: var(--section-header-margin-mobile);
  }
  
  .problems-grid,
  .features-grid {
    margin-bottom: var(--section-header-margin-mobile);
  }
  
  .feature-card {
    padding: 2rem;
  }
  
  .feature-icon {
    width: 5rem;
    height: 5rem;
    margin-bottom: 2rem;
  }
  
  .icon-inner {
    transform: scale(1.2);
  }
  
  .feature-text {
    margin-bottom: 2rem;
  }
  
  .feature-benefits {
    margin-bottom: 2rem;
  }
  
  .benefits-title {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
  }
  
  .benefit-item {
    padding: 1rem;
  }
  
  .benefit-text {
    font-size: 1rem;
  }
  
  .feature-button {
    padding: 1.25rem 0;
    font-size: 1.125rem;
  }
}