/* ===== 디자인 토큰 (로고 컬러 기반) ===== */
:root {
  --navy: #14223f;
  --navy-deep: #0c1730;
  --navy-black: #080f21;
  --navy-soft: #1d3057;
  --gold: #e9b84a;
  --gold-light: #f6d382;
  --gold-deep: #cf9f33;
  --ink: #16203a;
  --gray: #5c6577;
  --gray-light: #8b93a4;
  --line: #e6e9ef;
  --bg: #ffffff;
  --bg-soft: #f5f7fb;
  --radius: 22px;
  --radius-sm: 12px;
  --shadow: 0 24px 70px rgba(20, 34, 63, 0.16);
  --shadow-sm: 0 6px 22px rgba(20, 34, 63, 0.09);
  --gold-grad: linear-gradient(135deg, #f6d382 0%, #e9b84a 45%, #cf9f33 100%);
  --font: "Pretendard", -apple-system, BlinkMacSystemFont, system-ui, "Segoe UI",
    "Malgun Gothic", sans-serif;
}

/* ===== 리셋 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }

::selection { background: var(--gold); color: var(--navy); }

/* 커스텀 스크롤바 */
::-webkit-scrollbar { width: 11px; }
::-webkit-scrollbar-track { background: var(--navy-deep); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--gold-deep), var(--gold));
  border-radius: 99px;
  border: 2px solid var(--navy-deep);
}

.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ===== 스크롤 등장 애니메이션 ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}
[data-reveal].is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .chart-stroke, .chart-area, .shimmer, .book-badge, .orbit-coin, .ticker-track, .pulse-dot { animation: none !important; }
}

/* ===== 버튼 ===== */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--gold-grad);
  color: var(--navy);
  font-weight: 700;
  padding: 13px 24px;
  border-radius: 999px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
  box-shadow: 0 8px 24px rgba(233, 184, 74, 0.35);
  white-space: nowrap;
  cursor: pointer;
  border: none;
  overflow: hidden;
}
.btn:hover { transform: translateY(-2px); filter: brightness(1.05); box-shadow: 0 14px 34px rgba(233, 184, 74, 0.5); }
.btn:active { transform: translateY(0); }
.btn-lg { padding: 17px 34px; font-size: 1.06rem; }
.btn-sm { padding: 10px 18px; font-size: 0.9rem; }
.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  box-shadow: none;
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); border-color: #fff; filter: none; box-shadow: none; }

/* 버튼 광택 스윕 */
.btn-shine::after {
  content: "";
  position: absolute;
  top: -60%; left: -80%;
  width: 50%; height: 220%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.55), transparent);
  transform: rotate(12deg);
  animation: shine 3.4s ease-in-out infinite;
}
@keyframes shine {
  0%, 55% { left: -80%; }
  75%, 100% { left: 140%; }
}

/* ===== 헤더 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(8, 15, 33, 0.85);
  backdrop-filter: blur(14px);
  border-bottom-color: rgba(233, 184, 74, 0.14);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.22);
}
.header-inner { display: flex; align-items: center; gap: 24px; height: 74px; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.brand-logo { width: 38px; height: 38px; border-radius: 50%; box-shadow: 0 0 0 2px rgba(233, 184, 74, 0.35), 0 2px 10px rgba(0, 0, 0, 0.3); }
.brand-name { color: #fff; font-weight: 800; font-size: 1.2rem; letter-spacing: -0.02em; }
.nav-links { display: flex; gap: 26px; }
.nav-links a {
  position: relative;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.15s ease;
  padding: 4px 0;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--gold-grad); border-radius: 2px;
  transition: width 0.25s ease;
}
.nav-links a:hover { color: var(--gold-light); }
.nav-links a:hover::after { width: 100%; }

/* ===== 배경 요소 ===== */
.glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.55; pointer-events: none; }
.glow-1 { width: 560px; height: 560px; background: #29457d; top: -160px; left: -140px; }
.glow-2 { width: 480px; height: 480px; background: rgba(233, 184, 74, 0.2); bottom: -160px; right: -100px; }
.glow-3 { width: 620px; height: 620px; background: rgba(233, 184, 74, 0.12); top: -200px; right: -160px; }
.glow-4 { width: 520px; height: 520px; background: rgba(233, 184, 74, 0.16); top: 50%; left: 50%; transform: translate(-50%, -50%); }
.grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 40%, transparent 100%);
}
#particles { position: absolute; inset: 0; width: 100%; height: 100%; }

/* 상승 차트 라인 */
.chart-line { position: absolute; left: 0; right: 0; bottom: 0; width: 100%; height: 46%; opacity: 0.9; }
.chart-stroke {
  stroke-dasharray: 3200;
  stroke-dashoffset: 3200;
  animation: draw 3.4s cubic-bezier(0.4, 0, 0.2, 1) 0.4s forwards;
}
.chart-area { opacity: 0; animation: fadeIn 1.6s ease 2s forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fadeIn { to { opacity: 1; } }

/* ===== 히어로 ===== */
.hero {
  position: relative;
  background:
    radial-gradient(1100px 560px at 72% -12%, var(--navy-soft), transparent 62%),
    linear-gradient(180deg, var(--navy) 0%, var(--navy-deep) 100%);
  color: #fff;
  padding: 168px 0 150px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 48px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: rgba(233, 184, 74, 0.1);
  border: 1px solid rgba(233, 184, 74, 0.35);
  color: var(--gold-light);
  font-weight: 600;
  font-size: 0.88rem;
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
  backdrop-filter: blur(4px);
}
.pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 0 rgba(233, 184, 74, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(233, 184, 74, 0.55); }
  70% { box-shadow: 0 0 0 9px rgba(233, 184, 74, 0); }
  100% { box-shadow: 0 0 0 0 rgba(233, 184, 74, 0); }
}
.eyebrow {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0.12em;
  font-size: 0.82rem;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.eyebrow-line { display: inline-block; width: 30px; height: 1px; background: linear-gradient(90deg, transparent, var(--gold)); }
.eyebrow-line:last-child { background: linear-gradient(90deg, var(--gold), transparent); }
.download-body .eyebrow, .author-text .eyebrow { justify-content: flex-start; }
.hero-title {
  font-size: clamp(2.4rem, 5.2vw, 3.9rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.035em;
  text-shadow: 0 4px 40px rgba(0, 0, 0, 0.3);
}
.hero-title .accent {
  background: linear-gradient(110deg, #f6d382 20%, #e9b84a 40%, #fff2cf 50%, #e9b84a 60%, #cf9f33 80%);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.shimmer { animation: shimmer 4.5s linear infinite; }
@keyframes shimmer { to { background-position: -220% center; } }
.hero-desc { margin-top: 24px; max-width: 500px; color: #cdd6e6; font-size: 1.12rem; }
.hero-desc strong { color: #fff; }
.hero-actions { margin-top: 34px; display: flex; gap: 12px; flex-wrap: wrap; }
.hero-chips { margin-top: 30px; display: flex; gap: 20px; flex-wrap: wrap; }
.hero-chips li { display: flex; align-items: center; gap: 8px; color: #aeb9cd; font-size: 0.92rem; }
.hero-chips .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 10px var(--gold); }

/* ===== 3D 전자책 목업 ===== */
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; perspective: 1400px; }
.book-halo {
  position: absolute;
  width: 340px; height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(233, 184, 74, 0.22), transparent 65%);
  filter: blur(10px);
}
.book {
  position: relative;
  width: 268px;
  aspect-ratio: 3 / 4.2;
  transform: rotateY(-22deg) rotateX(4deg);
  transform-style: preserve-3d;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  filter: drop-shadow(30px 38px 48px rgba(0, 0, 0, 0.55));
  will-change: transform;
}
.book-cover {
  position: relative;
  width: 100%; height: 100%;
  border-radius: 6px 14px 14px 6px;
  background: linear-gradient(135deg, #1c3055 0%, #14223f 60%, #0e1a33 100%);
  border: 1px solid rgba(233, 184, 74, 0.3);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  overflow: hidden;
}
/* 책등(spine) 하이라이트 */
.book-cover::before {
  content: ""; position: absolute; top: 0; left: 0; width: 15px; height: 100%;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.4), rgba(255, 255, 255, 0.07));
}
/* 상단 광택 */
.book-cover::after {
  content: ""; position: absolute; top: -40%; left: -20%; width: 80%; height: 160%;
  background: linear-gradient(115deg, rgba(255, 255, 255, 0.15), transparent 55%);
  transform: rotate(8deg);
}
/* 실제 표지 이미지 버전 */
.book-cover-img { padding: 0; }
.book-cover-img .book-face {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: 1;
}
.book-cover-img::before { z-index: 2; }
.book-cover-img::after { z-index: 3; }
.book-logo { width: 48px; height: 48px; border-radius: 50%; margin-bottom: 20px; position: relative; z-index: 1; box-shadow: 0 0 0 2px rgba(233, 184, 74, 0.3); }
.book-brand { color: var(--gold); font-weight: 700; letter-spacing: 0.16em; font-size: 0.72rem; position: relative; z-index: 1; }
.book-title { color: #fff; font-size: 1.55rem; font-weight: 800; line-height: 1.25; margin-top: 8px; letter-spacing: -0.02em; position: relative; z-index: 1; }
.book-tag {
  margin-top: auto;
  color: var(--navy);
  background: var(--gold-grad);
  font-weight: 800;
  font-size: 0.7rem;
  letter-spacing: 0.09em;
  padding: 6px 13px;
  border-radius: 999px;
  position: relative; z-index: 1;
}
.book-badge {
  position: absolute;
  top: 0; right: -6px;
  background: #fff;
  color: var(--navy);
  font-weight: 700;
  font-size: 0.82rem;
  padding: 9px 17px;
  border-radius: 999px;
  box-shadow: var(--shadow);
  animation: float 3.5s ease-in-out infinite;
  z-index: 2;
}
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

/* 떠다니는 코인 */
.orbit-coin {
  position: absolute;
  display: flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--gold-grad);
  color: var(--navy);
  font-weight: 800;
  font-size: 1.05rem;
  box-shadow: 0 10px 26px rgba(233, 184, 74, 0.45), inset 0 -3px 6px rgba(0, 0, 0, 0.18), inset 0 3px 6px rgba(255, 255, 255, 0.45);
  animation: float 4s ease-in-out infinite;
  z-index: 2;
}
.coin-1 { top: 14%; left: 2%; animation-delay: 0.4s; }
.coin-2 { bottom: 10%; left: 10%; width: 36px; height: 36px; font-size: 0.9rem; animation-delay: 1.2s; }
.coin-3 { top: 42%; right: -2%; width: 32px; height: 32px; font-size: 0.82rem; animation-delay: 2s; }

/* ===== 채널 주제 티커 ===== */
.ticker {
  position: relative;
  background: var(--navy-black);
  border-top: 1px solid rgba(233, 184, 74, 0.22);
  border-bottom: 1px solid rgba(233, 184, 74, 0.12);
  overflow: hidden;
  padding: 15px 0;
}
.ticker::before, .ticker::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 110px; z-index: 2; pointer-events: none;
}
.ticker::before { left: 0; background: linear-gradient(90deg, var(--navy-black), transparent); }
.ticker::after { right: 0; background: linear-gradient(-90deg, var(--navy-black), transparent); }
.ticker-track {
  display: flex;
  align-items: center;
  gap: 34px;
  width: max-content;
  animation: ticker 30s linear infinite;
}
.ticker-track span {
  color: rgba(255, 255, 255, 0.82);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.ticker-track i { color: var(--gold); font-style: normal; font-size: 0.55rem; }
@keyframes ticker { to { transform: translateX(-50%); } }

/* ===== 신뢰 지표 ===== */
.stats { background: var(--navy-black); }
.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 46px 24px;
}
.stat { text-align: center; position: relative; }
.stat:not(:last-child)::after {
  content: ""; position: absolute; right: -10px; top: 50%; transform: translateY(-50%);
  width: 1px; height: 46px;
  background: linear-gradient(180deg, transparent, rgba(233, 184, 74, 0.35), transparent);
}
.stat-num {
  display: block;
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  font-weight: 800;
  background: var(--gold-grad);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}
.stat-label { color: #93a0b8; font-size: 0.9rem; }

/* ===== 섹션 공통 ===== */
.section { padding: 108px 0; }
.section-head { text-align: center; max-width: 660px; margin: 0 auto 60px; }
.section-title { font-size: clamp(1.75rem, 4vw, 2.4rem); font-weight: 800; letter-spacing: -0.025em; margin-bottom: 14px; line-height: 1.28; }
.section-sub { color: var(--gray); font-size: 1.05rem; }

/* ===== 왜 금융지식인가 ===== */
.value { background: var(--bg); }
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 38px 32px 34px;
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
  overflow: hidden;
}
.value-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--gold-grad);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.35s ease;
}
.value-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: rgba(233, 184, 74, 0.45); }
.value-card:hover::before { transform: scaleX(1); }
.value-num {
  position: absolute; top: 22px; right: 26px;
  font-size: 2.6rem; font-weight: 800; letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(233, 184, 74, 0.4);
}
.value-icon {
  width: 62px; height: 62px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.75rem;
  border-radius: 18px;
  background: linear-gradient(135deg, #fbf2d8, #f3e0ad);
  box-shadow: inset 0 0 0 1px rgba(207, 159, 51, 0.25);
  margin-bottom: 22px;
}
.value-card h3 { font-size: 1.22rem; font-weight: 700; margin-bottom: 10px; letter-spacing: -0.01em; }
.value-card p { color: var(--gray); font-size: 0.98rem; }

/* ===== 다운로드 (다크 프리미엄) ===== */
.download {
  position: relative;
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-deep) 100%);
  color: #fff;
  overflow: hidden;
}
.download-bg { position: absolute; inset: 0; }
.download .container { position: relative; z-index: 1; }
.download-card {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 60px;
  align-items: center;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(233, 184, 74, 0.22);
  border-radius: var(--radius);
  padding: 56px;
  backdrop-filter: blur(8px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}
.download-cover { display: flex; justify-content: center; perspective: 1200px; }
.book-sm { width: 220px; transform: rotateY(-16deg); filter: drop-shadow(20px 24px 34px rgba(0, 0, 0, 0.5)); }
.book-sm .book-title { font-size: 1.28rem; }
.book-sm .book-logo { width: 42px; height: 42px; }
.download .section-title { color: #fff; }
.download-desc { color: #b9c4d8; margin-bottom: 24px; max-width: 460px; }
.check-list { margin-bottom: 30px; display: grid; gap: 12px; }
.check-list li { position: relative; padding-left: 32px; color: #e8edf6; font-weight: 500; }
.check-list li::before {
  content: "✓"; position: absolute; left: 0; top: 2px;
  width: 21px; height: 21px; border-radius: 50%;
  background: var(--gold-grad); color: var(--navy);
  font-size: 0.72rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(233, 184, 74, 0.4);
}
.download-note { margin-top: 14px; font-size: 0.88rem; color: #8fa0bd; }

/* ===== 채널 소개 ===== */
.author { background: var(--bg-soft); }
.author-inner { display: grid; grid-template-columns: 330px 1fr; gap: 64px; align-items: center; }
.author-photo { position: relative; border-radius: var(--radius); box-shadow: var(--shadow); }
.author-photo img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; border-radius: var(--radius); position: relative; z-index: 1; }
.photo-frame {
  position: absolute; inset: 0;
  border-radius: var(--radius);
  border: 2px solid rgba(233, 184, 74, 0.65);
  transform: translate(16px, 16px);
  z-index: 0;
}
.author-caption {
  position: absolute; left: 16px; bottom: 16px; z-index: 2;
  background: rgba(12, 23, 48, 0.85);
  color: #fff; font-size: 0.82rem; font-weight: 600;
  padding: 7px 14px; border-radius: 999px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(233, 184, 74, 0.35);
}
.author-text p { color: var(--gray); margin-top: 14px; }
.author-text strong { color: var(--ink); }
.quote {
  position: relative;
  margin: 24px 0;
  padding: 26px 28px 24px 60px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-weight: 500;
  line-height: 1.8;
  font-size: 1.06rem;
  box-shadow: var(--shadow-sm);
}
.quote-mark {
  position: absolute; top: 6px; left: 18px;
  font-size: 3rem; line-height: 1;
  font-weight: 800;
  background: var(--gold-grad);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}

/* ===== 로드맵 ===== */
.roadmap { background: var(--bg); }
.roadmap-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: step;
  position: relative;
}
.roadmap-step {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 30px;
  text-align: center;
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}
.roadmap-step:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.roadmap-step.is-now { border-color: rgba(233, 184, 74, 0.6); box-shadow: 0 14px 44px rgba(233, 184, 74, 0.18); }
.step-state {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--gray-light);
  border: 1px solid var(--line);
  padding: 5px 13px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.roadmap-step.is-now .step-state {
  color: var(--navy);
  background: var(--gold-grad);
  border-color: transparent;
  box-shadow: 0 6px 16px rgba(233, 184, 74, 0.4);
}
.step-icon { font-size: 2.3rem; margin-bottom: 14px; }
.roadmap-step h3 { font-size: 1.18rem; font-weight: 700; margin-bottom: 8px; }
.roadmap-step p { color: var(--gray); font-size: 0.95rem; }

/* ===== 종이책 (STEP 2) ===== */
.bookstore { background: var(--bg-soft); }
.bookstore-inner {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 64px;
  align-items: center;
}
.bookstore-cover { position: relative; display: flex; justify-content: center; }
.bookstore-cover img {
  position: relative;
  z-index: 1;
  border-radius: var(--radius);
  box-shadow: 0 30px 80px rgba(20, 34, 63, 0.35), 0 0 0 1px rgba(233, 184, 74, 0.35);
  transition: transform 0.35s ease;
}
.bookstore-cover:hover img { transform: translateY(-8px) scale(1.015); }
.bookstore-glow {
  position: absolute; inset: -8% -12%;
  background: radial-gradient(circle, rgba(233, 184, 74, 0.3), transparent 68%);
  filter: blur(20px);
  z-index: 0;
}
.bookstore-title { font-size: clamp(1.5rem, 3.4vw, 2rem); font-weight: 800; letter-spacing: -0.02em; }
.bookstore-sub { color: var(--gray); margin: 6px 0 24px; font-weight: 500; }
.chapter-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 18px;
  margin-bottom: 24px;
}
.chapter-list li {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  font-size: 0.94rem;
  color: var(--ink);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.chapter-list li:hover { border-color: rgba(233, 184, 74, 0.55); box-shadow: var(--shadow-sm); }
.chapter-list b {
  color: var(--gold-deep);
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  margin-right: 8px;
}
.bonus-list { display: grid; gap: 8px; margin-bottom: 28px; }
.bonus-list li { color: var(--ink); font-weight: 600; font-size: 0.97rem; }
.bookstore-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.bookstore-note { color: var(--gray-light); font-size: 0.88rem; }
.gold-text { color: var(--gold-deep); }
.fine-print { margin-top: 28px; text-align: center; color: var(--gray-light); font-size: 0.82rem; }

/* ===== FAQ ===== */
.faq { background: var(--bg); }
.faq-inner { max-width: 780px; }
.faq-list { display: grid; gap: 12px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0 22px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.faq-item[open] { border-color: rgba(233, 184, 74, 0.55); box-shadow: var(--shadow-sm); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  font-weight: 700;
  color: var(--ink);
  position: relative;
  padding-right: 34px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute; right: 2px; top: 50%;
  transform: translateY(-50%);
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--gold-deep);
  font-weight: 800;
  transition: transform 0.2s ease, background 0.2s ease;
}
.faq-item[open] summary::after { content: "−"; background: var(--gold-grad); color: var(--navy); }
.faq-item p { color: var(--gray); padding: 0 0 20px; line-height: 1.75; }

/* ===== 문의 ===== */
.contact { background: var(--bg-soft); }
.contact-card {
  max-width: 720px; margin: 0 auto;
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 34px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}
.contact-card:hover { box-shadow: var(--shadow); border-color: rgba(233, 184, 74, 0.45); }
.contact-icon {
  width: 58px; height: 58px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 1.6rem;
  border-radius: 17px; background: linear-gradient(135deg, #fbf2d8, #f3e0ad);
  box-shadow: inset 0 0 0 1px rgba(207, 159, 51, 0.25);
}
.contact-body { display: flex; flex-direction: column; margin-right: auto; }
.contact-label { color: var(--gray-light); font-size: 0.85rem; font-weight: 600; }
.contact-email { color: var(--ink); font-weight: 700; font-size: 1.1rem; transition: color 0.15s ease; }
.contact-email:hover { color: var(--gold-deep); }

/* ===== 푸터 ===== */
.site-footer {
  position: relative;
  background: var(--navy-black);
  color: #b9c2d6;
  padding: 52px 0 28px;
}
.site-footer::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.6;
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 20px;
  padding-bottom: 28px; border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-logo { width: 46px; height: 46px; border-radius: 50%; box-shadow: 0 0 0 2px rgba(233, 184, 74, 0.3); }
.footer-brand div { display: flex; flex-direction: column; }
.footer-name { color: #fff; font-weight: 800; font-size: 1.1rem; }
.footer-tag { color: #8b93a4; font-size: 0.85rem; }
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a { color: #b9c2d6; font-size: 0.92rem; transition: color 0.15s ease; }
.footer-links a:hover { color: var(--gold-light); }
.footer-bottom { padding-top: 22px; }
.footer-copy { font-size: 0.85rem; color: #7e879b; }

/* ===== 맨 위로 버튼 ===== */
.to-top {
  position: fixed;
  right: 26px; bottom: 26px;
  width: 48px; height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--gold-grad);
  color: var(--navy);
  font-size: 1.15rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(233, 184, 74, 0.45);
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 60;
}
.to-top.show { opacity: 1; transform: none; pointer-events: auto; }
.to-top:hover { filter: brightness(1.06); }

/* ===== 반응형 ===== */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hero { padding: 140px 0 120px; }
  .hero-inner { grid-template-columns: 1fr; gap: 56px; text-align: center; }
  .hero-text { display: flex; flex-direction: column; align-items: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-visual { order: -1; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }
  .stat:nth-child(2)::after { display: none; }
  .value-grid, .roadmap-steps { grid-template-columns: 1fr; }
  .download-card { grid-template-columns: 1fr; padding: 40px 28px; text-align: center; gap: 36px; }
  .download-cover { max-width: 240px; margin: 0 auto; }
  .download-desc, .check-list { margin-left: auto; margin-right: auto; text-align: left; }
  .check-list { max-width: 340px; }
  .download-body .eyebrow { justify-content: center; }
  .author-inner { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .author-photo { max-width: 300px; margin: 0 auto; }
  .author-text .eyebrow { justify-content: center; }
  .quote { text-align: left; }
  .bookstore-inner { grid-template-columns: 1fr; gap: 40px; }
  .bookstore-cover { max-width: 320px; margin: 0 auto; }
  .bookstore-body { text-align: center; }
  .chapter-list { text-align: left; }
  .bookstore-actions { justify-content: center; }
}
@media (max-width: 560px) {
  .section { padding: 76px 0; }
  .hero { padding: 124px 0 96px; }
  .stat:not(:last-child)::after { display: none; }
  .contact-card { flex-direction: column; text-align: center; }
  .contact-body { margin-right: 0; align-items: center; }
  .book { width: 225px; }
  .orbit-coin { display: none; }
  .to-top { right: 18px; bottom: 18px; }
  .chapter-list { grid-template-columns: 1fr; }
}