/* =====================================================
   Studio Buying — Brand Homepage CSS
   오렌지 + 화이트 브랜드 디자인
   ===================================================== */

/* ---- CSS Variables ---- */
:root {
  --orange: #E85A0E;
  --orange-light: #FF7A30;
  --orange-soft: #FFF0E8;
  --orange-mid: #FFE0CC;
  --white: #FFFFFF;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  --kakao: #FEE500;
  --kakao-dark: #3A1D1D;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.09);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.10);
  --shadow-orange: 0 8px 24px rgba(232,90,14,0.22);
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--white);
  color: var(--gray-800);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.pc-only { display: inline; }

/* ---- Layout ---- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

/* ---- Typography Helpers ---- */
.text-orange { color: var(--orange); }

.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--orange);
  text-transform: uppercase;
  background: var(--orange-soft);
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.25;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 16px;
  color: var(--gray-500);
  margin-bottom: 56px;
  max-width: 560px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 15px;
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
}

.btn-kakao {
  background: var(--kakao);
  color: var(--kakao-dark);
  padding: 12px 24px;
}
.btn-kakao:hover {
  background: #f0d800;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(254,229,0,0.5);
}

.btn-outline {
  background: transparent;
  color: var(--orange);
  border: 2px solid var(--orange);
  padding: 12px 24px;
}
.btn-outline:hover {
  background: var(--orange);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-lg { padding: 16px 32px; font-size: 16px; }
.btn-xl { padding: 20px 48px; font-size: 18px; font-weight: 800; }

/* =====================================================
   HEADER
   ===================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-md); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

.logo-link { flex-shrink: 0; }
.logo-img { height: 48px; width: auto; }

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 32px;
  flex: 1;
  justify-content: center;
}
.nav-desktop a {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
  transition: color var(--transition);
  position: relative;
}
.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transition: transform var(--transition);
  border-radius: 2px;
}
.nav-desktop a:hover { color: var(--orange); }
.nav-desktop a:hover::after { transform: scaleX(1); }

.btn-header { display: flex; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-sm);
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gray-800);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* Mobile Nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 16px 24px 24px;
  border-top: 1px solid var(--gray-200);
  gap: 4px;
  background: var(--white);
}
.mobile-nav.open { display: flex; }
.mobile-nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-700);
  padding: 12px 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.mobile-nav-link:hover { background: var(--gray-50); color: var(--orange); }
.mobile-cta { margin-top: 12px; justify-content: center; }

/* =====================================================
   HERO
   ===================================================== */
.hero {
  position: relative;
  min-height: calc(100vh - 68px);
  display: flex;
  align-items: center;
  background: linear-gradient(145deg, #fff 0%, #FFF8F4 50%, #FFF0E8 100%);
  overflow: hidden;
  padding: 80px 0;
}

.hero-bg-shape {
  position: absolute;
  top: -120px;
  right: -180px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(232,90,14,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--orange-soft);
  color: var(--orange);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 28px;
  border: 1px solid var(--orange-mid);
}

.hero-title {
  font-size: clamp(32px, 5.5vw, 60px);
  font-weight: 900;
  color: var(--gray-900);
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 560px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.hero-tags span {
  font-size: 13px;
  color: var(--gray-500);
  background: var(--gray-100);
  padding: 5px 12px;
  border-radius: 50px;
  font-weight: 500;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--gray-400);
  font-size: 12px;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* =====================================================
   PROBLEM SECTION
   ===================================================== */
.problem-section { background: var(--gray-50); }

.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.problem-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(24px);
}
.problem-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.problem-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--orange-mid);
}

.problem-icon {
  font-size: 36px;
  margin-bottom: 16px;
  line-height: 1;
}

.problem-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.problem-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.65;
}

.problem-conclusion {
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
}
.problem-conclusion-inner {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  color: var(--white);
}
.problem-conclusion-inner i {
  font-size: 28px;
  flex-shrink: 0;
  margin-top: 2px;
  color: rgba(255,255,255,0.9);
}
.problem-conclusion-inner p {
  font-size: 16px;
  line-height: 1.7;
}
.problem-conclusion-inner strong { font-weight: 800; }

/* =====================================================
   SOLUTION SECTION
   ===================================================== */
.solution-section { background: var(--white); }

.flow-wrap {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-bottom: 60px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.flow-step {
  flex: 1;
  min-width: 200px;
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  border: 2px solid var(--gray-200);
  transition: all var(--transition);
  position: relative;
}
.flow-step:hover {
  border-color: var(--orange);
  background: var(--orange-soft);
  transform: translateY(-4px);
  box-shadow: var(--shadow-orange);
}

.flow-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--white);
  font-size: 22px;
  box-shadow: var(--shadow-orange);
}

.flow-num {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.flow-step h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.flow-step p {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.6;
}

.flow-arrow {
  display: flex;
  align-items: center;
  padding: 0 8px;
  color: var(--orange);
  font-size: 20px;
  flex-shrink: 0;
  align-self: center;
}

.solution-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.solution-sum-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--orange-soft);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--orange-mid);
}
.solution-sum-item i {
  font-size: 24px;
  color: var(--orange);
  flex-shrink: 0;
  margin-top: 2px;
}
.solution-sum-item span {
  font-size: 14px;
  color: var(--gray-700);
  line-height: 1.6;
}
.solution-sum-item strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

/* =====================================================
   SERVICES SECTION
   ===================================================== */
.services-section { background: var(--gray-50); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0;
}
.service-card:hover {
  border-color: var(--orange);
  box-shadow: var(--shadow-orange);
  transform: translateY(-5px);
}

.service-card--highlight {
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
  border-color: var(--orange);
  color: var(--white);
}
.service-card--highlight h3,
.service-card--highlight p,
.service-card--highlight .service-icon i {
  color: var(--white);
}
.service-card--highlight .service-tags li {
  background: rgba(255,255,255,0.2);
  color: var(--white);
  border-color: rgba(255,255,255,0.3);
}

.service-icon {
  width: 52px;
  height: 52px;
  background: var(--orange-soft);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  transition: background var(--transition);
}
.service-card:hover .service-icon { background: var(--orange-mid); }
.service-card--highlight .service-icon { background: rgba(255,255,255,0.2); }
.service-icon i { font-size: 22px; color: var(--orange); }

.service-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.service-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.65;
  margin-bottom: 16px;
  flex: 1;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}
.service-tags li {
  font-size: 12px;
  font-weight: 600;
  color: var(--orange);
  background: var(--orange-soft);
  padding: 4px 10px;
  border-radius: 50px;
  border: 1px solid var(--orange-mid);
}

/* =====================================================
   DIFFERENTIATOR SECTION
   ===================================================== */
.diff-section { background: var(--white); }

.diff-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.diff-card {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.diff-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--orange), var(--orange-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.diff-card:hover::before { transform: scaleX(1); }
.diff-card:hover {
  border-color: var(--orange-mid);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.diff-card--wide {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, #FFF8F4 0%, var(--orange-soft) 100%);
}

.diff-num {
  font-size: 11px;
  font-weight: 800;
  color: var(--orange);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.diff-icon {
  width: 48px;
  height: 48px;
  background: var(--white);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}
.diff-icon i { font-size: 22px; color: var(--orange); }

.diff-card h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.diff-card p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
}

/* =====================================================
   TRUST SECTION
   ===================================================== */
.trust-section {
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
  color: var(--white);
}
.trust-section .section-label {
  background: rgba(255,255,255,0.2);
  color: var(--white);
  border: none;
}
.trust-section .section-title { color: var(--white); }

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

.trust-card {
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.25);
  transition: background var(--transition);
}
.trust-card:hover { background: rgba(255,255,255,0.25); }

.trust-number {
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 900;
  color: var(--white);
  line-height: 1;
  margin-bottom: 12px;
  font-family: 'Inter', sans-serif;
}
.trust-number span {
  font-size: 0.55em;
  font-weight: 700;
}

.trust-label {
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  font-weight: 500;
}

/* =====================================================
   PROCESS SECTION
   ===================================================== */
.process-section { background: var(--gray-50); }

.process-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}

.process-step {
  display: flex;
  gap: 24px;
  padding-bottom: 40px;
  position: relative;
}

.process-circle {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 20px;
  box-shadow: var(--shadow-orange);
  position: relative;
  z-index: 1;
}

.process-line {
  position: absolute;
  left: 29px;
  top: 60px;
  width: 2px;
  height: calc(100% - 60px);
  background: linear-gradient(to bottom, var(--orange-mid), var(--gray-200));
}
.process-line--last { display: none; }

.process-content {
  flex: 1;
  padding-top: 12px;
  padding-bottom: 8px;
}

.process-num {
  font-size: 11px;
  font-weight: 800;
  color: var(--orange);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 6px;
}

.process-content h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.process-content p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.65;
}

/* =====================================================
   PORTFOLIO SECTION
   ===================================================== */
.portfolio-section { background: var(--white); }

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
@media (max-width: 700px) {
  .portfolio-grid { grid-template-columns: 1fr; }
}

.portfolio-card {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}
.portfolio-card:hover {
  border-color: var(--orange-mid);
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
  background: var(--white);
}

.portfolio-category {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--orange);
  background: var(--orange-soft);
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 16px;
  border: 1px solid var(--orange-mid);
}

.portfolio-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.portfolio-desc {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 24px;
}

.portfolio-results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}
.portfolio-result-item {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 14px;
  border: 1px solid var(--gray-200);
  text-align: center;
}
.portfolio-result-item strong {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-500);
  margin-bottom: 4px;
}
.portfolio-result-item span {
  font-size: 15px;
  font-weight: 800;
  color: var(--orange);
}

.portfolio-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.portfolio-tags span {
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-500);
  background: var(--gray-100);
  padding: 4px 10px;
  border-radius: 50px;
}

/* =====================================================
   FAQ SECTION
   ===================================================== */
.faq-section { background: var(--gray-50); }

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--orange-mid); }

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  text-align: left;
  background: none;
  color: var(--gray-900);
  font-size: 15px;
  font-weight: 600;
  transition: background var(--transition);
}
.faq-question:hover { background: var(--gray-50); }
.faq-item.open .faq-question { color: var(--orange); }

.faq-icon {
  flex-shrink: 0;
  font-size: 14px;
  color: var(--gray-400);
  transition: transform 0.3s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(180deg);
  color: var(--orange);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.75;
  padding-top: 8px;
  border-top: 1px solid var(--gray-100);
}

/* =====================================================
   FINAL CTA SECTION
   ===================================================== */
.final-cta-section {
  background: linear-gradient(145deg, #fff 0%, #FFF8F4 100%);
  text-align: center;
}

.final-cta-inner {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.final-cta-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--orange);
  background: var(--orange-soft);
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 24px;
  border: 1px solid var(--orange-mid);
}

.final-cta-title {
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 900;
  color: var(--gray-900);
  line-height: 1.2;
  margin-bottom: 20px;
}

.final-cta-sub {
  font-size: 16px;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 40px;
}

.final-cta-note {
  margin-top: 20px;
  font-size: 13px;
  color: var(--gray-400);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* =====================================================
   FOOTER
   ===================================================== */
.footer { background: var(--gray-900); color: var(--white); padding: 60px 0 0; }

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 48px;
}

.footer-logo { display: none; }
.footer-tagline { font-size: 13px; color: var(--gray-400); }

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-info p {
  font-size: 13px;
  color: var(--gray-400);
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.footer-info p span {
  color: var(--gray-500);
  font-size: 12px;
  font-weight: 600;
  min-width: 48px;
  padding: 2px 8px;
  background: rgba(255,255,255,0.07);
  border-radius: 4px;
  text-align: center;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 24px;
  text-align: center;
}
.footer-bottom p { font-size: 13px; color: var(--gray-500); }

/* =====================================================
   FLOATING CTA
   ===================================================== */
.floating-cta {
  position: fixed;
  bottom: 32px;
  right: 28px;
  z-index: 800;
  background: var(--kakao);
  color: var(--kakao-dark);
  border-radius: 50px;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 800;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  transition: all 0.3s ease;
  transform: translateY(0);
}
.floating-cta:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(0,0,0,0.22);
}
.floating-cta i { font-size: 18px; }

.floating-cta-text { font-size: 14px; }

/* =====================================================
   RESPONSIVE — TABLET
   ===================================================== */
@media (max-width: 900px) {
  .nav-desktop { display: none; }
  .btn-header { display: none; }
  .hamburger { display: flex; }
  .pc-only { display: none; }

  .diff-grid { grid-template-columns: 1fr; }
  .diff-card--wide { grid-column: auto; }

  .flow-wrap { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); align-self: center; padding: 4px 0; }
}

/* =====================================================
   RESPONSIVE — MOBILE
   ===================================================== */
@media (max-width: 600px) {
  .section { padding: 64px 0; }
  .section-sub { margin-bottom: 36px; }

  .hero { min-height: auto; padding: 60px 0 80px; }
  .hero-scroll-hint { display: none; }
  .hero-cta-group { flex-direction: column; }
  .hero-cta-group .btn { justify-content: center; }

  .problem-grid { grid-template-columns: 1fr; }
  .problem-conclusion { padding: 24px; }
  .problem-conclusion-inner { flex-direction: column; gap: 12px; }

  .flow-step { min-width: unset; }

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

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

  .portfolio-grid { grid-template-columns: 1fr; }
  .portfolio-results { grid-template-columns: 1fr 1fr; }

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

  .footer-inner { flex-direction: column; gap: 24px; }
  .footer-links { gap: 12px; }

  .floating-cta-text { display: none; }
  .floating-cta { padding: 16px; border-radius: 50%; }
  .floating-cta i { font-size: 22px; }

  .solution-summary { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
}

/* =====================================================
   ANIMATIONS
   ===================================================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-badge { animation: fadeInUp 0.6s ease 0.1s both; }
.hero-title  { animation: fadeInUp 0.6s ease 0.2s both; }
.hero-sub    { animation: fadeInUp 0.6s ease 0.3s both; }
.hero-cta-group { animation: fadeInUp 0.6s ease 0.4s both; }
.hero-tags   { animation: fadeInUp 0.6s ease 0.5s both; }