/* ===========================================
   비바샘 콘텐츠 파크 — style.css
   =========================================== */

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

:root {
  /* Brand */
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #818cf8;
  --accent: #06b6d4;
  --accent2: #f59e0b;
  --accent3: #10b981;
  --danger: #ef4444;

  /* Zone colors */
  --z0: #7c3aed;  /* 에듀테크 플랫폼 */
  --z1: #4f46e5;
  --z2: #0ea5e9;
  --z3: #10b981;
  --z4: #f59e0b;
  --z5: #ec4899;

  /* Neutral */
  --white: #ffffff;
  --bg-soft: #f8f7ff;
  --bg-gray: #f1f0fb;
  --surface: #ffffff;
  --border: #e8e6f8;
  --text: #1a1a2e;
  --text-muted: #6b7280;
  --text-light: #9ca3af;

  /* Shadow */
  --shadow-sm: 0 1px 3px rgba(79,70,229,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(79,70,229,.1), 0 2px 8px rgba(0,0,0,.06);
  --shadow-lg: 0 8px 32px rgba(79,70,229,.15), 0 4px 16px rgba(0,0,0,.08);
  --shadow-xl: 0 20px 60px rgba(79,70,229,.2);

  /* Radius */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-full: 9999px;

  /* Transitions */
  --ease: cubic-bezier(.4,0,.2,1);
  --t-fast: 150ms;
  --t-base: 250ms;
  --t-slow: 400ms;
}

html { scroll-behavior: smooth; scroll-padding-top: 68px; }

body {
  font-family: 'Pretendard', 'Apple SD Gothic Neo', -apple-system, sans-serif;
  background: var(--bg-soft);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
img { max-width: 100%; }

/* ── Layout ──────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 88px 0; position: relative; overflow: hidden; }
.bg-soft { background: var(--bg-soft); }
.bg-white { background: var(--white); }
.bg-park {
  background: linear-gradient(135deg, #2d1b69 0%, #4f46e5 40%, #0ea5e9 100%);
}
.bg-contest {
  background: linear-gradient(135deg, #1a0533 0%, #3b0764 40%, #4f46e5 100%);
}


/* ── Section Headers ─────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--r-full);
  background: rgba(79,70,229,.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: .3px;
}
.tag-orange { background: rgba(245,158,11,.12); color: #d97706; }

.section-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 900;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 12px;
}
.section-title.light { color: #fff; }

.section-desc { font-size: 15px; color: var(--text-muted); }
.section-desc.light { color: rgba(255,255,255,.8); }

.highlight { color: var(--primary); }
.highlight-light { color: #a5f3fc; }


/* ── NAV ──────────────────────────────────────── */
#topNav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--t-base) var(--ease);
}
#topNav.scrolled { box-shadow: var(--shadow-md); }

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-logo .logo-icon { font-size: 22px; }
.nav-logo strong { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 6px 12px;
  border-radius: var(--r-sm);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--t-fast), background var(--t-fast);
  white-space: nowrap;
}
.nav-links a:hover { color: var(--primary); background: rgba(79,70,229,.06); }

.nav-cta-btn {
  padding: 7px 16px !important;
  border-radius: var(--r-full) !important;
  background: var(--primary) !important;
  color: #fff !important;
  font-weight: 700 !important;
  font-size: 13px !important;
  transition: transform var(--t-fast), box-shadow var(--t-fast) !important;
}
.nav-cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79,70,229,.35) !important;
  background: var(--primary) !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--r-sm);
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--t-base), opacity var(--t-base);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1024px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 12px 16px 20px;
    gap: 2px;
    box-shadow: var(--shadow-md);
  }
  .nav-links.mobile-open a {
    padding: 10px 16px;
    font-size: 15px;
  }
}


/* ── HERO ─────────────────────────────────────── */
#hero {
  padding-top: 64px;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-bg-grad {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #1e1252 0%, #3730a3 35%, #1e40af 65%, #0c4a6e 100%);
}
#particleCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: .5;
}

/* Floating icons */
.floating-icons {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.fi {
  position: absolute;
  font-size: clamp(20px, 2.5vw, 36px);
  opacity: .18;
  animation: floatIcon 8s ease-in-out infinite;
  user-select: none;
}
.fi-1  { top: 12%; left:  6%; animation-delay: 0s;    animation-duration: 9s;  }
.fi-2  { top: 25%; left: 88%; animation-delay: 1s;    animation-duration: 7s;  }
.fi-3  { top: 55%; left:  3%; animation-delay: 2s;    animation-duration: 11s; }
.fi-4  { top: 75%; left: 92%; animation-delay: .5s;   animation-duration: 8s;  }
.fi-5  { top:  8%; left: 45%; animation-delay: 1.5s;  animation-duration: 10s; }
.fi-6  { top: 85%; left: 20%; animation-delay: 3s;    animation-duration: 9s;  }
.fi-7  { top: 40%; left: 95%; animation-delay: 2.5s;  animation-duration: 7s;  }
.fi-8  { top: 65%; left: 50%; animation-delay: .8s;   animation-duration: 12s; }
.fi-9  { top: 90%; left: 70%; animation-delay: 4s;    animation-duration: 8s;  }
.fi-10 { top: 20%; left: 72%; animation-delay: 1.2s;  animation-duration: 10s; }

@keyframes floatIcon {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(-18px) rotate(5deg); }
  66% { transform: translateY(10px) rotate(-4deg); }
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 60px;
  align-items: center;
  padding: 80px 0 100px;
}

/* Hero text */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: var(--r-full);
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.9);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}
.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 0 3px rgba(74,222,128,.3);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(74,222,128,.3); }
  50% { box-shadow: 0 0 0 6px rgba(74,222,128,.1); }
}

.hero-title {
  font-size: clamp(52px, 7vw, 88px);
  font-weight: 900;
  line-height: 1.05;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.title-highlight {
  background: linear-gradient(90deg, #a5f3fc, #818cf8, #f9a8d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}
.title-emoji { font-size: clamp(32px, 4vw, 56px); vertical-align: middle; }

.hero-sub {
  font-size: clamp(15px, 2vw, 18px);
  color: rgba(255,255,255,.75);
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 20px;
}
.stat-item { text-align: center; }
.stat-num {
  display: block;
  font-size: 22px;
  font-weight: 900;
  color: #fff;
}
.stat-label { font-size: 12px; color: rgba(255,255,255,.55); font-weight: 600; }
.stat-div {
  width: 1px;
  height: 32px;
  background: rgba(255,255,255,.2);
}


/* Mission card */
.hero-mission-card {
  background: rgba(255,255,255,.1);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--r-xl);
  padding: 32px;
  box-shadow: var(--shadow-xl);
}
.mission-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}
.mission-header .mission-icon { font-size: 32px; }
.mission-label {
  font-size: 14px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 2px;
}
.mission-progress {
  font-size: 12px;
  color: rgba(255,255,255,.6);
}

.mission-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }

.mission-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--r-md);
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.1);
  transition: all var(--t-base) var(--ease);
  cursor: pointer;
}
.mission-item:hover { background: rgba(255,255,255,.12); }
.mission-item.done { background: rgba(74,222,128,.15); border-color: rgba(74,222,128,.3); }

.mission-check {
  width: 26px;
  height: 26px;
  min-width: 26px;
  border-radius: 8px;
  border: 2px solid rgba(255,255,255,.4);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t-base) var(--ease);
  cursor: pointer;
  color: transparent;
}
.mission-item.done .mission-check {
  background: #4ade80;
  border-color: #4ade80;
  color: #15803d;
}
.mission-check svg { width: 14px; height: 14px; stroke-width: 2.5; }

.mission-icon-sm { font-size: 16px; flex-shrink: 0; }

.mission-text {
  font-size: 13.5px;
  font-weight: 600;
  color: rgba(255,255,255,.9);
  transition: all var(--t-base);
  flex: 1;
}
.mission-item.done .mission-text {
  text-decoration: line-through;
  color: rgba(255,255,255,.4);
}

.mission-footer { margin-top: 20px; }
.mission-bar {
  height: 6px;
  background: rgba(255,255,255,.15);
  border-radius: var(--r-full);
  overflow: hidden;
  margin-bottom: 10px;
}
.mission-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #4ade80, #22c55e);
  border-radius: var(--r-full);
  width: 0%;
  transition: width .5s var(--ease);
}
.mission-hint { font-size: 11px; color: rgba(255,255,255,.4); }

/* Hero wave */
.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  line-height: 0;
}
.hero-wave svg { width: 100%; display: block; }


/* ── Buttons ─────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--r-full);
  background: #fff;
  color: var(--primary);
  font-weight: 800;
  font-size: 14px;
  transition: transform var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
  box-shadow: 0 4px 20px rgba(255,255,255,.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255,255,255,.35);
}
.btn-primary.dark {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(79,70,229,.3);
}
.btn-primary.dark:hover { box-shadow: 0 8px 30px rgba(79,70,229,.4); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--r-full);
  background: rgba(255,255,255,.12);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  border: 1.5px solid rgba(255,255,255,.3);
  transition: all var(--t-fast) var(--ease);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,.2);
  transform: translateY(-2px);
}

.btn-large { padding: 15px 32px; font-size: 15px; }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--r-full);
  border: 2px solid var(--primary);
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
  transition: all var(--t-fast) var(--ease);
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-1px); }


/* ── Zone Cards ──────────────────────────────── */
.zone-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.zone-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  padding: 28px 20px 24px;
  border-radius: var(--r-xl);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--t-base) var(--ease);
  position: relative;
  overflow: hidden;
}
.zone-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--t-base);
}
.zone-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.zone-card:hover::before { opacity: 1; }

/* Zone-specific backgrounds */
.zone-platform    { background: linear-gradient(145deg, #f3e8ff, #ede9fe); border-color: #c4b5fd; }
.zone-textbook    { background: linear-gradient(145deg, #eef2ff, #e0e7ff); border-color: #c7d2fe; }
.zone-interactive { background: linear-gradient(145deg, #e0f7ff, #bae6fd); border-color: #7dd3fc; }
.zone-enrich      { background: linear-gradient(145deg, #ecfdf5, #d1fae5); border-color: #6ee7b7; }
.zone-topic       { background: linear-gradient(145deg, #fffbeb, #fef3c7); border-color: #fcd34d; }
.zone-growth      { background: linear-gradient(145deg, #fdf2f8, #fce7f3); border-color: #f9a8d4; }

.zone-platform:hover    { background: linear-gradient(145deg, #ede9fe, #ddd6fe); border-color: var(--z0); }
.zone-interactive { background: linear-gradient(145deg, #e0f7ff, #bae6fd); border-color: #7dd3fc; }
.zone-enrich      { background: linear-gradient(145deg, #ecfdf5, #d1fae5); border-color: #6ee7b7; }
.zone-topic       { background: linear-gradient(145deg, #fffbeb, #fef3c7); border-color: #fcd34d; }
.zone-growth      { background: linear-gradient(145deg, #fdf2f8, #fce7f3); border-color: #f9a8d4; }

.zone-textbook:hover    { background: linear-gradient(145deg, #e0e7ff, #c7d2fe); border-color: var(--z1); }
.zone-interactive:hover { background: linear-gradient(145deg, #bae6fd, #7dd3fc); border-color: var(--z2); }
.zone-enrich:hover      { background: linear-gradient(145deg, #d1fae5, #a7f3d0); border-color: var(--z3); }
.zone-topic:hover       { background: linear-gradient(145deg, #fef3c7, #fde68a); border-color: var(--z4); }
.zone-growth:hover      { background: linear-gradient(145deg, #fce7f3, #fbcfe8); border-color: var(--z5); }

.zone-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--r-lg);
  background: rgba(255,255,255,.7);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
}
.zone-emoji { font-size: 28px; }
.zone-num { font-size: 11px; font-weight: 800; letter-spacing: 1px; color: var(--text-light); margin-bottom: 6px; }
.zone-title { font-size: 14px; font-weight: 800; color: var(--text); margin-bottom: 8px; line-height: 1.3; }
.zone-desc { font-size: 12px; color: var(--text-muted); margin-bottom: 12px; line-height: 1.5; flex: 1; word-break: keep-all; overflow-wrap: break-word; }
.zone-tag {
  font-size: 11px;
  color: var(--text-muted);
  background: rgba(255,255,255,.7);
  padding: 3px 10px;
  border-radius: var(--r-full);
  font-weight: 600;
  margin-bottom: 10px;
}
.zone-arrow {
  font-size: 18px;
  font-weight: 900;
  opacity: 0;
  transform: translateX(-6px);
  transition: all var(--t-base) var(--ease);
  color: var(--primary);
  align-self: flex-end;
}
.zone-card:hover .zone-arrow { opacity: 1; transform: translateX(0); }


/* ── Featured / Park Section ─────────────────── */
.park-deco {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.park-deco-circle {
  position: absolute;
  border-radius: 50%;
  opacity: .07;
}
.c1 { width: 600px; height: 600px; background: #a5f3fc; top: -200px; right: -100px; }
.c2 { width: 400px; height: 400px; background: #818cf8; bottom: -100px; left: -50px; }
.c3 { width: 300px; height: 300px; background: #f9a8d4; top: 50%; left: 45%; transform: translate(-50%,-50%); }

/* Featured grid — magazine layout */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto;
  gap: 16px;
}

/* Content cards — featured */
.content-card {
  background: rgba(255,255,255,.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--r-lg);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all var(--t-base) var(--ease);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.content-card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,.18);
  border-color: rgba(255,255,255,.35);
  box-shadow: 0 12px 40px rgba(0,0,0,.25);
}

/* Featured large card */
.content-card.card-lg {
  grid-column: span 2;
  grid-row: span 2;
  padding: 28px;
  background: rgba(255,255,255,.16);
}
.content-card.card-lg .card-title { font-size: 20px; }
.content-card.card-lg .card-desc { font-size: 14px; -webkit-line-clamp: 3; }

/* Featured wide card */
.content-card.card-wide { grid-column: span 2; }

.card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 3px 10px;
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .3px;
}
.badge-new  { background: #10b981; color: #fff; }
.badge-hot  { background: #ef4444; color: #fff; }
.badge-best { background: #f59e0b; color: #fff; }
.badge-rec  { background: linear-gradient(135deg, #4f46e5, #818cf8); color: #fff; }

.card-zone-icon { font-size: 26px; }
.card-title {
  font-size: 15px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
}
.card-desc {
  font-size: 12px;
  color: rgba(255,255,255,.7);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
  word-break: keep-all;
  overflow-wrap: break-word;
}
.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: auto;
}
/* 학교급 태그 — featured (dark) */
.card-tag-level {
  padding: 3px 8px;
  border-radius: var(--r-full);
  background: rgba(255,255,255,.28);
  color: #fff;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .2px;
  border: 1px solid rgba(255,255,255,.4);
}
/* 과목 태그 — featured (dark) */
.card-tag-subject {
  padding: 3px 8px;
  border-radius: var(--r-full);
  background: rgba(255,255,255,.10);
  color: rgba(255,255,255,.7);
  font-size: 10.5px;
  font-weight: 600;
}
.card-btns {
  display: flex;
  gap: 6px;
  margin-top: 4px;
}
.card-btn {
  flex: 1;
  padding: 8px 12px;
  border-radius: var(--r-md);
  background: rgba(255,255,255,.2);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  transition: all var(--t-fast) var(--ease);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.card-btn:hover {
  background: rgba(255,255,255,.35);
  transform: translateY(-1px);
}
.card-btn-icon { font-size: 11px; }

/* Highlighted card */
.content-card.highlighted {
  border-color: #fbbf24 !important;
  box-shadow: 0 0 0 3px rgba(251,191,36,.35), 0 12px 40px rgba(0,0,0,.25) !important;
  animation: highlightPop .4s ease;
}
@keyframes highlightPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.03); }
  100% { transform: scale(1); }
}


/* ── Explore Section ─────────────────────────── */
/* Filter Panel — 2열 그리드(좌: 필터 / 우: 배너) */
.filter-panel {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--r-xl);
  padding: 0;
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1fr 160px;
  overflow: hidden;
}
.filter-left {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-right: 1.5px solid var(--border);
}

.filter-search {
  position: relative;
  display: flex;
  align-items: center;
}
.filter-search-icon {
  position: absolute;
  left: 14px;
  font-size: 16px;
  pointer-events: none;
}
#searchInput {
  width: 100%;
  padding: 11px 40px 11px 42px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-full);
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  background: var(--bg-soft);
  outline: none;
  transition: border var(--t-fast);
}
#searchInput:focus { border-color: var(--primary); background: #fff; }
.filter-clear-btn {
  position: absolute;
  right: 12px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--text-light);
  color: #fff;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--t-fast);
}
.filter-clear-btn.visible { opacity: 1; }

.filter-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.filter-label {
  font-size: 12px;
  font-weight: 800;
  color: var(--text);
  background: var(--bg-gray);
  padding: 4px 10px;
  border-radius: var(--r-sm);
  white-space: nowrap;
  flex-shrink: 0;
}
.filter-chips { display: flex; flex-wrap: wrap; gap: 6px; }

.chip {
  padding: 6px 14px;
  border-radius: var(--r-full);
  border: 1.5px solid var(--border);
  background: var(--white);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-muted);
  transition: all var(--t-fast) var(--ease);
  cursor: pointer;
  white-space: nowrap;
}
.chip:hover { border-color: var(--primary-light); color: var(--primary); }
.chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* 탐험존 칩 컬러 — 카드 상단 테두리(::before) 색상과 1:1 대응 */
.chip-z0         { border-color: var(--z0); color: var(--z0); }
.chip-z0:hover   { background: rgba(124,58,237,.08); border-color: var(--z0); color: var(--z0); }
.chip-z0.active  { background: var(--z0); border-color: var(--z0); color: #fff; }

.chip-z1         { border-color: var(--z2); color: var(--z2); }
.chip-z1:hover   { background: rgba(14,165,233,.08); border-color: var(--z2); color: var(--z2); }
.chip-z1.active  { background: var(--z2); border-color: var(--z2); color: #fff; }

.chip-z2         { border-color: var(--z3); color: var(--z3); }
.chip-z2:hover   { background: rgba(16,185,129,.08); border-color: var(--z3); color: var(--z3); }
.chip-z2.active  { background: var(--z3); border-color: var(--z3); color: #fff; }

.chip-z3         { border-color: var(--z4); color: var(--z4); }
.chip-z3:hover   { background: rgba(245,158,11,.08); border-color: var(--z4); color: var(--z4); }
.chip-z3.active  { background: var(--z4); border-color: var(--z4); color: #fff; }

.chip-z4         { border-color: var(--z5); color: var(--z5); }
.chip-z4:hover   { background: rgba(236,72,153,.08); border-color: var(--z5); color: var(--z5); }
.chip-z4.active  { background: var(--z5); border-color: var(--z5); color: #fff; }

.filter-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.filter-count { font-size: 13px; font-weight: 700; color: var(--text); white-space: nowrap; }
.filter-count strong { color: var(--primary); font-size: 15px; }
.filter-reset { font-size: 12.5px; font-weight: 600; color: var(--text-muted); transition: color var(--t-fast); white-space: nowrap; }
.filter-reset:hover { color: var(--danger); }

/* 우측 콘텐츠 맵 배너 */
.filter-cmap-banner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 24px 14px;
  background: linear-gradient(160deg, #eff6ff 0%, #eef2ff 55%, #ede9fe 100%);
  text-decoration: none;
  color: var(--text);
  transition: background var(--t-fast);
  text-align: center;
}
.filter-cmap-banner:hover {
  background: linear-gradient(160deg, #dbeafe 0%, #e0e7ff 55%, #e0d9fe 100%);
}
.filter-cmap-icon { font-size: 30px; line-height: 1; }
.filter-cmap-title {
  font-size: 13.5px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.4;
  display: block;
}
.filter-cmap-desc {
  font-size: 11px;
  color: var(--text-muted);
  font-style: normal;
  line-height: 1.5;
  display: block;
}
.filter-cmap-arrow {
  font-size: 18px;
  color: var(--primary);
  opacity: .5;
  transition: opacity var(--t-fast), transform var(--t-fast);
}
.filter-cmap-banner:hover .filter-cmap-arrow {
  opacity: 1;
  transform: translate(2px, -2px);
}

/* Explore grid — explore cards (light) */
.explore-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.explore-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  transition: all var(--t-base) var(--ease);
  position: relative;
  overflow: hidden;
}
.explore-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--r-sm) var(--r-sm) 0 0;
  opacity: 0;
  transition: opacity var(--t-base);
}
.explore-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.explore-card:hover::before { opacity: 1; }

/* Zone accent top bars */
.explore-card.zone-edtech-platform::before { background: var(--z0); opacity: 1; }
.explore-card.zone-textbook::before    { background: var(--z1); opacity: 1; }
.explore-card.zone-interactive-edtech::before { background: var(--z2); opacity: 1; }
.explore-card.zone-enrich-edtech::before { background: var(--z3); opacity: 1; }
.explore-card.zone-topic-materials::before { background: var(--z4); opacity: 1; }
.explore-card.zone-student-growth::before { background: var(--z5); opacity: 1; }

.explore-card .card-title { font-size: 14px; font-weight: 800; color: var(--text); }
.explore-card .card-desc { font-size: 12px; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.5; word-break: keep-all; overflow-wrap: break-word; }
.explore-card .card-tags { margin-top: 0; }
.explore-card .card-tag-level {
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 10.5px;
  border: none;
  padding: 3px 8px;
  border-radius: var(--r-full);
}
.explore-card .card-tag-subject {
  background: var(--bg-gray);
  color: var(--text-muted);
  font-size: 10.5px;
  padding: 3px 8px;
  border-radius: var(--r-full);
}
.explore-card .card-badge { top: 10px; right: 10px; }
.explore-card .card-btns { margin-top: auto; }
.explore-card .card-btn { background: var(--primary); color: #fff; }
.explore-card .card-btn:hover { background: var(--primary-dark); }

.explore-card.highlighted {
  border-color: var(--accent2) !important;
  box-shadow: 0 0 0 3px rgba(245,158,11,.2), var(--shadow-md) !important;
}

/* ── 에듀테크 플랫폼 고정 영역 ─────────────────────────── */
/* ── 콘텐츠 맵 배너 (필터 패널 내) ─────────────────────── */
.content-map-banner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  background: linear-gradient(135deg, #eef2ff 0%, #f0fdf4 100%);
  border: 1.5px solid #c7d2fe;
  border-radius: var(--r-lg);
  margin-bottom: 12px;
}
.cmap-banner-icon { font-size: 24px; flex-shrink: 0; }
.cmap-banner-text { flex: 1; display: flex; flex-direction: column; gap: 2px; }
.cmap-banner-text strong { font-size: 13px; font-weight: 800; color: var(--text); }
.cmap-banner-text span { font-size: 12px; color: var(--text-muted); }
.cmap-banner-btn {
  flex-shrink: 0;
  padding: 7px 16px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--r-full);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
  transition: background var(--t-base);
  white-space: nowrap;
}
.cmap-banner-btn:hover { background: var(--primary-dark); }

/* ── 필터 패널 chip-z0 ────────────────────────────────── */
.chip-z0 { border-color: var(--z0) !important; color: var(--z0) !important; }
.chip-z0.active { background: var(--z0) !important; color: #fff !important; }
.empty-emoji { font-size: 48px; display: block; margin-bottom: 16px; }
.empty-state p { font-size: 16px; color: var(--text-muted); font-weight: 700; }
.empty-state small { font-size: 14px; color: var(--text-light); }


/* ── Content Map ─────────────────────────────── */
.cmap-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.cmap-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.cmap-step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cmap-step-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--r-xl);
  background: linear-gradient(145deg, var(--bg-gray), var(--bg-soft));
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  box-shadow: var(--shadow-sm);
  transition: all var(--t-base) var(--ease);
}
.cmap-step:hover .cmap-step-icon { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.cmap-step-label { font-size: 14px; font-weight: 700; color: var(--text); }
.cmap-step-arrow { font-size: 24px; color: var(--text-light); padding-top: 20px; }
.cmap-action { text-align: center; }


/* ── Guide ───────────────────────────────────── */
.guide-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 36px;
}
.guide-tab {
  padding: 10px 28px;
  border-radius: var(--r-full);
  border: 2px solid var(--border);
  background: var(--white);
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 700;
  transition: all var(--t-fast) var(--ease);
}
.guide-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: 0 4px 12px rgba(79,70,229,.3); }

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto 40px;
}
.guide-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--r-xl);
  padding: 24px;
  transition: all var(--t-base) var(--ease);
  box-shadow: var(--shadow-sm);
}
.guide-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.guide-num {
  width: 36px;
  height: 36px;
  border-radius: var(--r-md);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 16px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}
.guide-card h3 { font-size: 14px; font-weight: 800; color: var(--text); margin-bottom: 8px; }
.guide-card p { font-size: 12.5px; color: var(--text-muted); line-height: 1.6; word-break: keep-all; overflow-wrap: break-word; }
.guide-footer { text-align: center; }


/* ── Contest ─────────────────────────────────── */
.contest-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.contest-star {
  position: absolute;
  font-size: 28px;
  opacity: .15;
  animation: starFloat 6s ease-in-out infinite;
}
.s1 { top: 10%; left: 8%;  animation-delay: 0s; }
.s2 { top: 20%; right: 12%; animation-delay: 1.5s; }
.s3 { bottom: 25%; left: 15%; animation-delay: .8s; }
.s4 { bottom: 15%; right: 8%; animation-delay: 2s; }
.s5 { top: 50%; right: 25%; animation-delay: .4s; }

@keyframes starFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-15px) scale(1.1); }
}

#contest .container { position: relative; z-index: 2; text-align: center; }
.contest-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: var(--r-full);
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}
.contest-title {
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 16px;
}
.contest-highlight {
  background: linear-gradient(90deg, #fcd34d, #fb923c);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.contest-sub { font-size: 17px; color: rgba(255,255,255,.75); margin-bottom: 60px; }

/* Journey steps */
.journey-steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.journey-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  flex: 1;
  min-width: 140px;
  max-width: 200px;
  position: relative;
}
.journey-step:not(.last)::after {
  content: '→';
  position: absolute;
  right: -16px;
  top: 28px;
  font-size: 20px;
  color: rgba(255,255,255,.3);
}

.journey-step-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  border: 2px solid rgba(255,255,255,.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  transition: all var(--t-base) var(--ease);
  backdrop-filter: blur(8px);
}
.journey-step-circle.golden {
  background: linear-gradient(135deg, #fcd34d, #f59e0b);
  border-color: #fbbf24;
  box-shadow: 0 0 0 6px rgba(251,191,36,.2), 0 8px 24px rgba(245,158,11,.4);
}
.journey-step:hover .journey-step-circle { transform: translateY(-4px) scale(1.05); }
.journey-step h4 { font-size: 14px; font-weight: 800; color: #fff; }
.journey-step p { font-size: 12px; color: rgba(255,255,255,.6); line-height: 1.5; max-width: 120px; }
/* step-line: h4 위 gap 역할만 하는 빈 요소 */
.journey-step-line { display: block; width: 0; height: 0; }

.contest-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}
.btn-contest-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  border-radius: var(--r-full);
  background: linear-gradient(135deg, #fcd34d, #f59e0b);
  color: #7c2d12;
  font-size: 15px;
  font-weight: 900;
  transition: all var(--t-fast) var(--ease);
  box-shadow: 0 4px 20px rgba(245,158,11,.4);
}
.btn-contest-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(245,158,11,.5); }

.btn-contest-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 36px;
  border-radius: var(--r-full);
  background: rgba(255,255,255,.1);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  border: 2px solid rgba(255,255,255,.3);
  transition: all var(--t-fast) var(--ease);
}
.btn-contest-ghost:hover { background: rgba(255,255,255,.18); transform: translateY(-2px); }


/* ── Footer ──────────────────────────────────── */
.site-footer {
  padding: 40px 0;
  background: var(--white);
  border-top: 1px solid var(--border);
}
.footer-inner { text-align: center; }
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.footer-brand strong { color: var(--primary); }
.footer-brand .logo-icon { font-size: 20px; }
.footer-tagline { font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
.footer-copy { font-size: 12px; color: var(--text-light); }


/* ── Toast ───────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(30px) scale(.9);
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  color: #fff;
  padding: 14px 28px;
  border-radius: var(--r-full);
  font-size: 15px;
  font-weight: 800;
  opacity: 0;
  pointer-events: none;
  transition: all .35s cubic-bezier(.34,1.56,.64,1);
  z-index: 9999;
  white-space: nowrap;
  max-width: 90vw;
  box-shadow: 0 8px 32px rgba(79,70,229,.45), 0 0 0 0 rgba(79,70,229,.3);
  letter-spacing: .2px;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0) scale(1);
  animation: toastPulse .6s ease forwards;
}
@keyframes toastPulse {
  0%   { box-shadow: 0 8px 32px rgba(79,70,229,.45), 0 0 0 0 rgba(79,70,229,.4); }
  50%  { box-shadow: 0 8px 32px rgba(79,70,229,.45), 0 0 0 12px rgba(79,70,229,.0); }
  100% { box-shadow: 0 8px 32px rgba(79,70,229,.45), 0 0 0 0 rgba(79,70,229,.0); }
}

/* ── Confetti Canvas ──────────────────────────── */
#confettiCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 9998;
  opacity: 0;
  transition: opacity .2s;
}
#confettiCanvas.active { opacity: 1; }


/* ── Scroll Top ──────────────────────────────── */
.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(16px);
  transition: all var(--t-base) var(--ease);
  z-index: 999;
}
.scroll-top.visible { opacity: 1; transform: translateY(0); }
.scroll-top:hover { transform: translateY(-2px) scale(1.05); box-shadow: var(--shadow-lg); }


/* ── Animations ──────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

[data-anim] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
[data-anim].anim-in {
  opacity: 1;
  transform: translateY(0);
}
[data-anim="fade"] { transform: none; }


/* ── Responsive ──────────────────────────────── */
@media (max-width: 1100px) {
  .zone-grid { grid-template-columns: repeat(3, 1fr); }
  .featured-grid { grid-template-columns: repeat(3, 1fr); }
  .explore-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 860px) {
  .hero-content { grid-template-columns: 1fr; gap: 40px; padding: 60px 0 80px; }
  .hero-text { text-align: center; }
  .hero-actions, .hero-stats { justify-content: center; }
  .zone-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-grid { grid-template-columns: repeat(2, 1fr); }
  .content-card.card-lg { grid-column: span 2; }
  .explore-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-grid { grid-template-columns: 1fr 1fr; }
  .journey-steps { gap: 20px; }
  .journey-step:not(.last)::after { display: none; }
  .cmap-steps { flex-direction: column; gap: 12px; }
  .cmap-step-arrow { transform: rotate(90deg); padding-top: 0; }
  /* 860px 이하: 배너를 아래로 내려 1열로 전환 */
  .filter-panel { grid-template-columns: 1fr; }
  .filter-left { border-right: none; border-bottom: 1.5px solid var(--border); }
  .filter-cmap-banner { flex-direction: row; padding: 16px 20px; gap: 12px; justify-content: center; }
  .filter-cmap-icon { font-size: 22px; }
  .filter-cmap-title { font-size: 13px; text-align: left; }
  .filter-cmap-desc { display: none; }
  .filter-meta { justify-content: space-between; }
}
@media (max-width: 580px) {
  .section { padding: 64px 0; }
  .zone-grid { grid-template-columns: 1fr; }
  .featured-grid { grid-template-columns: 1fr; }
  .content-card.card-lg { grid-column: span 1; grid-row: span 1; }
  .content-card.card-wide { grid-column: span 1; }
  .explore-grid { grid-template-columns: 1fr 1fr; }
  .guide-grid { grid-template-columns: 1fr; }
  .hero-mission-card { display: none; }
}