/* ============================================
   BEYOND ENGLISH - 비즈니스영어 전문 랜딩페이지
   CSS 스타일 시트
   ============================================ */

/* ===== CSS 변수 / 디자인 토큰 ===== */
:root {
    --primary: #2563eb;        /* 브라이트 블루 - 신뢰·활기 */
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --accent: #f59e0b;         /* 선명한 앰버 - CTA 강조 */
    --accent-dark: #d97706;
    --accent-light: #fbbf24;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg-light: #f8faff;
    --bg-section: #eff6ff;
    --text-dark: #0f172a;
    --text-body: #374151;
    --text-muted: #6b7280;
    --border: #dbeafe;
    --white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(37,99,235,0.08);
    --shadow-md: 0 8px 30px rgba(37,99,235,0.13);
    --shadow-lg: 0 20px 60px rgba(37,99,235,0.18);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: 0.3s ease;
    --font-main: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

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

body {
    font-family: var(--font-main);
    color: var(--text-body);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: var(--font-main);
}

/* ===== 레이아웃 컨테이너 ===== */
.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 공통 버튼 스타일 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(232,160,32,0.35);
}

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(232,160,32,0.45);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.85rem;
}

.btn-hero-primary {
    background: var(--accent);
    color: var(--white);
    padding: 16px 36px;
    font-size: 1.05rem;
    border-radius: 50px;
    box-shadow: 0 6px 25px rgba(232,160,32,0.4);
}

.btn-hero-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(232,160,32,0.5);
}

.btn-hero-secondary {
    background: rgba(255,255,255,0.15);
    color: var(--white);
    padding: 16px 36px;
    font-size: 1.05rem;
    border-radius: 50px;
    border: 2px solid rgba(255,255,255,0.5);
    backdrop-filter: blur(5px);
}

.btn-hero-secondary:hover {
    background: rgba(255,255,255,0.25);
    border-color: rgba(255,255,255,0.8);
    transform: translateY(-3px);
}

/* ===== 공통 섹션 헤더 ===== */
.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-badge {
    display: inline-block;
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.problem-badge { background: #fef2f2; color: #dc2626; }
.solution-badge { background: #eff6ff; color: var(--primary); }
.curriculum-badge { background: #f0fdf4; color: #16a34a; }
.pricing-badge { background: #fffbeb; color: #d97706; }
.review-badge { background: #faf5ff; color: #7c3aed; }
.faq-badge { background: #eff6ff; color: var(--primary); }
.contact-badge { background: rgba(251,191,36,0.18); color: #b45309; }

.section-title {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 16px;
    line-height: 1.3;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.8;
}

.highlight {
    color: var(--accent);
    position: relative;
}

/* ===== 숨김 유틸리티 ===== */
.hidden {
    display: none !important;
}

/* ===== 공지 바 ===== */
#notice-bar {
    background: linear-gradient(135deg, #1d4ed8, #3b82f6);
    color: var(--white);
    text-align: center;
    padding: 10px 50px;
    font-size: 0.88rem;
    position: relative;
}

#notice-bar a {
    color: var(--accent-light);
    font-weight: 700;
    text-decoration: underline;
}

.notice-close {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: rgba(255,255,255,0.7);
    font-size: 1rem;
    cursor: pointer;
    padding: 4px 8px;
}

/* ===== 헤더 / 네비게이션 ===== */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

#main-header.scrolled {
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 3px;
    flex-shrink: 0;
    width: 254px;
    height: 68px;
    text-decoration: none;
}

.logo-en-main {
    font-family: 'Montserrat', 'Noto Sans KR', sans-serif;
    font-size: 1.18rem;
    font-weight: 800;
    color: #1e3a8a;
    letter-spacing: -0.3px;
    line-height: 1;
    white-space: nowrap;
}

.logo-ko-sub {
    font-size: 0.72rem;
    font-weight: 500;
    color: #3b82f6;
    letter-spacing: 0.4px;
    line-height: 1;
    white-space: nowrap;
}

/* 헤더 스크롤 시 로고 색상 유지 */
#main-header.scrolled .logo-en-main { color: #1e3a8a; }
#main-header.scrolled .logo-ko-sub  { color: #3b82f6; }


#main-nav ul {
    display: flex;
    gap: 4px;
}

#main-nav a {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-body);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

#main-nav a:hover {
    color: var(--primary);
    background: var(--bg-section);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    cursor: pointer;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
}
.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== 모바일 메뉴 ===== */
.mobile-menu {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-md);
    z-index: 999;
    padding: 20px;
}

.mobile-menu.open {
    display: block;
}

.mobile-menu ul {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mobile-menu a {
    display: block;
    padding: 12px 16px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-dark);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.mobile-menu a:hover {
    background: var(--bg-section);
    color: var(--primary);
}

.mobile-menu .btn-primary {
    display: block;
    text-align: center;
    margin-top: 12px;
    padding: 14px;
    border-radius: var(--radius-sm);
}

/* ===== HERO 섹션 ===== */
#hero {
    min-height: 100vh;
    background: linear-gradient(160deg, #1d4ed8 0%, #2563eb 45%, #60a5fa 100%);
    position: relative;
    display: flex;
    align-items: center;
    padding-top: 110px;
    padding-bottom: 80px;
    overflow: hidden;
}

/* 배경 인물 사진 – 오른쪽 하단 고정 */
.hero-person-bg {
    position: absolute;
    right: 0;
    bottom: 0;
    height: 100%;
    width: 45%;
    z-index: 1;
    pointer-events: none;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
}
.hero-person-bg img {
    height: 92%;
    width: auto;
    object-fit: contain;
    object-position: bottom right;
    opacity: 0.55;  /* 배경식 투명도 */
    filter: drop-shadow(0 0 40px rgba(255,255,255,0.08));
    mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.6) 30%, black 70%);
    -webkit-mask-image: linear-gradient(to right, transparent 0%, rgba(0,0,0,0.6) 30%, black 70%);
}

#hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(251,191,36,0.2) 0%, transparent 70%);
    top: -100px;
    right: -100px;
    border-radius: 50%;
}

#hero::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%);
    bottom: -80px;
    left: 10%;
    border-radius: 50%;
}

.hero-bg-overlay {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px; /* 텍스트 영역만 */
    width: 100%;
}

.hero-left {
    flex: 1;
    min-width: 0;
    padding-bottom: 80px; /* 왼쪽만 하단 여백 */
}

.hero-right {
    flex-shrink: 0;
    width: 360px;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    /* 히어로 하단까지 늘려서 인물이 서있는 느낌 */
    align-self: stretch;
    position: relative;
}

.hero-photo-wrap {
    position: absolute;
    bottom: -80px; /* 섹션 하단까지 내려옴 */
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-photo {
    width: 100%;
    display: block;
    border-radius: 0; /* 배경 없는 인물이라 radius 제거 */
    box-shadow: none;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3));
}

.hero-photo-badge {
    margin-top: -8px;
    background: var(--accent);
    color: #0f172a;
    font-size: 0.82rem;
    font-weight: 800;
    padding: 8px 22px;
    border-radius: 50px;
    white-space: nowrap;
    box-shadow: 0 4px 20px rgba(245,158,11,0.5);
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(232,160,32,0.2);
    border: 1px solid rgba(232,160,32,0.4);
    color: var(--accent-light);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.6rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero-title .highlight {
    color: var(--accent-light);
    text-decoration: underline;
    text-decoration-color: rgba(232,160,32,0.4);
    text-underline-offset: 6px;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: rgba(255,255,255,0.85);
    line-height: 1.9;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    gap: 32px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.stat-num {
    font-size: 2rem;
    font-weight: 900;
    color: var(--accent-light);
    line-height: 1;
}

.stat-unit {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-light);
}

.stat-label {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.65);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 50px;
    background: rgba(255,255,255,0.2);
    align-self: center;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.hero-note {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.6);
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: rgba(255,255,255,0.5);
    font-size: 0.75rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-8px); }
}

/* ===== 신뢰 바 ===== */
#trust-bar {
    background: var(--white);
    padding: 28px 0;
    border-bottom: 1px solid var(--border);
}

.trust-label {
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 16px;
    font-weight: 500;
}

.trust-logos {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
}

.trust-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: var(--white);
    border: 1.5px solid #bfdbfe;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-dark);
    transition: var(--transition);
}

.trust-tag:hover {
    background: #dbeafe;
    border-color: var(--primary);
    color: var(--primary);
}

.trust-tag i {
    color: var(--primary);
    font-size: 0.9rem;
}

/* ===== 문제 섹션 ===== */
#problem {
    padding: 100px 0;
    background: #f8faff;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 60px;
}

.problem-card {
    background: var(--white);
    border: 1.5px solid #bfdbfe;
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.problem-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.problem-card-highlight {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    border-color: #2563eb;
    color: var(--white);
}

.problem-card-highlight .problem-text {
    color: var(--white);
}

.problem-emoji {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.problem-text {
    font-size: 0.95rem;
    color: var(--text-body);
    line-height: 1.7;
}

.problem-reason {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    box-shadow: var(--shadow-md);
}

.problem-reason h3 {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 28px;
    text-align: center;
}

.reason-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.reason-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 24px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
}

.reason-icon-bad {
    color: var(--danger);
    font-size: 1.4rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.reason-icon-good {
    color: var(--success);
    font-size: 1.4rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.reason-item strong {
    display: block;
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.reason-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ===== 솔루션 섹션 ===== */
#solution {
    padding: 100px 0;
    background: var(--white);
}

.solution-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.feature-card {
    background: linear-gradient(180deg, #f8faff 0%, var(--white) 100%);
    border: 1.5px solid #bfdbfe;
    border-radius: var(--radius-md);
    padding: 36px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2563eb, #60a5fa);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon i {
    font-size: 1.5rem;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 16px;
}

.feature-badge {
    display: inline-block;
    background: rgba(26,58,107,0.08);
    color: var(--primary);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 600;
}

/* 비교표 */
.comparison-section {
    background: linear-gradient(135deg, #eff6ff, #f8faff);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
}

.comparison-title {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 28px;
    text-align: center;
}

.comparison-table-wrap {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.comparison-table th {
    padding: 16px 24px;
    font-size: 0.9rem;
    font-weight: 700;
    text-align: center;
}

.comparison-table th:first-child {
    text-align: left;
    background: var(--bg-section);
    color: var(--text-dark);
}

.comparison-table th.col-bad {
    background: #fdecea;
    color: #c0392b;
}

.comparison-table th.col-good {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: var(--white);
}

.comparison-table td {
    padding: 14px 24px;
    font-size: 0.9rem;
    border-top: 1px solid var(--border);
    text-align: center;
}

.comparison-table td:first-child {
    text-align: left;
    font-weight: 600;
    color: var(--text-dark);
}

.comparison-table td.col-bad {
    color: #c0392b;
}

.comparison-table td.col-good {
    color: var(--success);
    font-weight: 600;
}

.comparison-table tr:hover td {
    background: var(--bg-light);
}

/* ===== 커리큘럼 섹션 ===== */
#curriculum {
    padding: 100px 0;
    background: linear-gradient(180deg, #eff6ff 0%, #f8faff 100%);
}

.curriculum-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.tab-btn {
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--white);
    border: 2px solid var(--border);
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.tab-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    box-shadow: 0 4px 15px rgba(37,99,235,0.3);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.curriculum-detail {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 48px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    box-shadow: var(--shadow-md);
    align-items: start;
}

.curriculum-info h3 {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.curriculum-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 24px;
}

.curriculum-points {
    margin-bottom: 28px;
}

.curriculum-points li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.92rem;
    color: var(--text-body);
    border-bottom: 1px solid var(--border);
}

.curriculum-points li:last-child {
    border-bottom: none;
}

.curriculum-points li i {
    color: var(--success);
    font-size: 0.9rem;
    flex-shrink: 0;
}

.curriculum-duration {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-section);
    padding: 10px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
}

/* 이메일 샘플 */
.email-sample {
    background: #f8f9fc;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.email-header {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.email-label {
    color: rgba(255,255,255,0.8);
    font-size: 0.78rem;
    font-weight: 600;
}

.email-body {
    padding: 20px;
    font-size: 0.88rem;
    line-height: 1.8;
    color: var(--text-body);
}

.email-body .email-subject {
    font-weight: 700;
    color: var(--text-dark);
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
    margin-bottom: 16px;
}

.email-highlight {
    background: rgba(232,160,32,0.1);
    padding: 10px 16px;
    font-size: 0.82rem;
    color: var(--accent-dark);
    font-weight: 600;
    border-top: 1px solid rgba(232,160,32,0.2);
}

/* 미팅·협상 샘플 */
.meeting-sample {
    background: #f8f9fc;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.sample-header {
    background: linear-gradient(135deg, #2563eb, #60a5fa);
    padding: 12px 20px;
}

.sample-label {
    color: rgba(255,255,255,0.85);
    font-size: 0.78rem;
    font-weight: 600;
}

.sample-phrases {
    padding: 8px 0;
}

.phrase-item {
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
}

.phrase-item:last-child {
    border-bottom: none;
}

.phrase-situation {
    display: inline-block;
    background: rgba(26,58,107,0.08);
    color: var(--primary);
    padding: 2px 10px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.phrase-eng {
    display: block;
    font-size: 0.87rem;
    color: var(--text-dark);
    font-style: italic;
    line-height: 1.6;
}

/* ===== 수강 플랜 섹션 ===== */
#pricing {
    padding: 100px 0;
    background: var(--white);
}

.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
}

.toggle-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-body);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--border);
    border-radius: 50px;
    transition: var(--transition);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: var(--white);
    border-radius: 50%;
    transition: var(--transition);
}

.toggle-switch input:checked + .toggle-slider {
    background-color: var(--primary);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(24px);
}

.discount-badge {
    background: var(--accent);
    color: var(--white);
    padding: 2px 8px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.pricing-card {
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    position: relative;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.pricing-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.pricing-card-popular {
    border-color: var(--accent);
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(232,160,32,0.2);
}

.pricing-card-popular:hover {
    transform: translateY(-12px);
}

.pricing-card-vip {
    border-color: var(--primary);
    background: linear-gradient(180deg, var(--white) 0%, rgba(26,58,107,0.03) 100%);
}

.popular-badge, .vip-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 18px;
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 700;
    white-space: nowrap;
}

.popular-badge {
    background: var(--accent);
    color: var(--white);
}

.vip-badge {
    background: var(--primary);
    color: var(--white);
}

.plan-name {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 6px;
    margin-top: 12px;
}

.plan-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.plan-price {
    margin-bottom: 8px;
}

.price-monthly {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary);
}

.price-unit {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-left: 4px;
}

.plan-sessions {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.plan-features {
    margin-bottom: 28px;
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 7px 0;
    font-size: 0.88rem;
    color: var(--text-body);
}

.plan-features li i.fa-check {
    color: var(--success);
    font-size: 0.85rem;
    flex-shrink: 0;
}

.feature-disabled {
    opacity: 0.45;
}

.feature-disabled i.fa-times {
    color: var(--text-muted);
    font-size: 0.85rem;
    flex-shrink: 0;
}

.btn-plan {
    display: block;
    text-align: center;
    padding: 14px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.95rem;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-plan-outline {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-plan-outline:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-plan-primary {
    background: var(--accent);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(232,160,32,0.3);
}

.btn-plan-primary:hover {
    background: var(--accent-dark);
    box-shadow: 0 8px 25px rgba(232,160,32,0.4);
    transform: translateY(-2px);
}

.btn-plan-vip {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(26,58,107,0.3);
}

.btn-plan-vip:hover {
    box-shadow: 0 8px 25px rgba(26,58,107,0.4);
    transform: translateY(-2px);
}

.pricing-note {
    margin-top: 36px;
    text-align: center;
    font-size: 0.88rem;
    color: var(--text-muted);
    background: var(--bg-light);
    padding: 16px 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.pricing-note i {
    color: var(--primary);
}

/* ===== 강의 카드 섹션 ===== */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    margin-bottom: 36px;
}

.course-card {
    background: var(--white);
    border: 1.5px solid #bfdbfe;
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
}

.course-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.course-card-popular {
    border-color: var(--accent);
    box-shadow: 0 8px 30px rgba(232,160,32,0.15);
}

.course-card-vip {
    border-color: var(--primary);
    background: linear-gradient(180deg, var(--white) 0%, rgba(26,58,107,0.03) 100%);
}

.course-level-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 28px;
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.03em;
}

.level-1 { background: #e8f5e9; color: #2e7d32; }
.level-2 { background: #fff8e1; color: #f57c00; }
.level-special { background: #f3e8ff; color: #7b2d8b; }
.level-3 { background: #e8f4fd; color: var(--primary); }

.course-info {
    flex: 1;
}

.course-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1.4;
    margin-bottom: 12px;
}

.course-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 16px;
}

.course-features {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.course-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    color: var(--text-body);
}

.course-features li i {
    color: var(--success);
    font-size: 0.82rem;
    flex-shrink: 0;
}

.btn-course {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 700;
    transition: var(--transition);
    border: 2px solid var(--primary);
    color: var(--primary);
    background: var(--white);
}

.btn-course:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(26,58,107,0.25);
}

.btn-course-popular {
    background: var(--accent);
    color: var(--white);
    border-color: var(--accent);
    box-shadow: 0 4px 15px rgba(232,160,32,0.3);
}

.btn-course-popular:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
    box-shadow: 0 8px 25px rgba(232,160,32,0.4);
}

.btn-course-vip {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: var(--white);
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(26,58,107,0.3);
}

.btn-course-vip:hover {
    box-shadow: 0 8px 25px rgba(26,58,107,0.4);
}

/* 강의 상세보기 버튼 */
.btn-course-detail {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 700;
    transition: var(--transition);
    border: 2px solid #cbd5e1;
    color: #475569;
    background: #f8fafc;
    text-decoration: none;
}

.btn-course-detail:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #eff6ff;
    transform: translateY(-2px);
}

/* ===== 히어로 온라인 배지 ===== */
.hero-online-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 32px;
}

.online-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.18);
    border: 1.5px solid rgba(255,255,255,0.35);
    color: var(--white);
    padding: 7px 16px;
    border-radius: 50px;
    font-size: 0.83rem;
    font-weight: 600;
    backdrop-filter: blur(4px);
}

/* ===== 인강 배너 ===== */
.ingang-banner {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    border: 1.5px solid #bfdbfe;
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    margin-bottom: 36px;
}

.ingang-banner-item {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
}

.ingang-banner-item span {
    color: var(--text-dark);
    font-weight: 600;
}

/* ===== 강의 썸네일 ===== */
.course-thumb {
    width: 100%;
    height: 120px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 4px;
    cursor: pointer;
    transition: var(--transition);
}

.course-thumb:hover .thumb-play {
    transform: translate(-50%, -50%) scale(1.15);
}

.course-thumb-1 { background: linear-gradient(135deg, #d1fae5, #6ee7b7); }
.course-thumb-2 { background: linear-gradient(135deg, #fef9c3, #fde68a); }
.course-thumb-3 { background: linear-gradient(135deg, #ede9fe, #c4b5fd); }
.course-thumb-4 { background: linear-gradient(135deg, #dbeafe, #93c5fd); }

.thumb-emoji {
    font-size: 3rem;
    z-index: 1;
}

.thumb-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.85);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--primary);
    font-weight: 900;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
    transition: var(--transition);
    padding-left: 3px;
}

/* ===== 강의 링크 안내 ===== */
.course-link-note {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: -8px;
}

/* ===== 인강 왜? 섹션 ===== */
.ingang-why {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-top: 20px;
}

.ingang-why-header {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    padding: 18px 28px;
}

.ingang-why-title {
    color: var(--white);
    font-size: 1rem;
    font-weight: 700;
}

.ingang-why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
}

.ingang-why-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 20px 24px;
    border-bottom: 1px solid #eff6ff;
    border-right: 1px solid #eff6ff;
}

.ingang-why-item:nth-child(even) {
    border-right: none;
}

.ingang-why-item:nth-last-child(-n+2) {
    border-bottom: none;
}

.ingang-why-item.good {
    background: #f0fdf4;
}

.ingang-why-item.bad {
    background: #fef2f2;
}

.why-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.ingang-why-item strong {
    display: block;
    font-size: 0.92rem;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.ingang-why-item p {
    font-size: 0.83rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ===== 문제 카드 CTA ===== */
.problem-cta-btn {
    display: inline-block;
    margin-top: 12px;
    background: rgba(255,255,255,0.25);
    border: 1.5px solid rgba(255,255,255,0.6);
    color: var(--white);
    padding: 7px 18px;
    border-radius: 50px;
    font-size: 0.83rem;
    font-weight: 700;
    transition: var(--transition);
}

.problem-cta-btn:hover {
    background: rgba(255,255,255,0.4);
}

/* ===== 수강 경로 ===== */
.course-path {
    background: linear-gradient(135deg, #eff6ff, #f0fdf4);
    border: 1.5px solid #bfdbfe;
    border-radius: var(--radius-lg);
    padding: 32px 36px;
    margin-top: 36px;
    text-align: center;
}

.course-path-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 24px;
}

.course-path-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.path-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    background: var(--white);
    border: 2px solid #bfdbfe;
    border-radius: var(--radius-md);
    padding: 14px 20px;
    min-width: 110px;
    box-shadow: var(--shadow-sm);
}

.path-step-vip {
    border-color: var(--primary);
    background: linear-gradient(180deg, #eff6ff, var(--white));
}

.path-num {
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 800;
}

.path-step-vip .path-num {
    background: linear-gradient(135deg, var(--primary), var(--accent));
}

.path-name {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-dark);
    text-align: center;
    line-height: 1.4;
}

.path-arrow {
    font-size: 1.5rem;
    color: var(--primary);
    font-weight: 900;
}

/* 사슬영어 별도 추천 */
.course-path-extra {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    background: rgba(124,58,237,0.07);
    border: 1.5px dashed #c4b5fd;
    border-radius: var(--radius-md);
    padding: 14px 20px;
}

.path-extra-badge {
    background: #7c3aed;
    color: var(--white);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 700;
    white-space: nowrap;
}

.path-extra-text {
    font-size: 0.88rem;
    color: #6d28d9;
    font-weight: 500;
}

.path-extra-link {
    color: #7c3aed;
    font-weight: 700;
    font-size: 0.88rem;
    text-decoration: underline;
    white-space: nowrap;
    transition: var(--transition);
}

.path-extra-link:hover {
    color: #5b21b6;
}

/* ===== 반응형 ===== */
@media (max-width: 768px) {
    .courses-grid {
        grid-template-columns: 1fr;
    }
    .ingang-why-grid {
        grid-template-columns: 1fr;
    }
    .ingang-why-item {
        border-right: none;
    }
    .ingang-why-item:nth-last-child(-n+2) {
        border-bottom: 1px solid #eff6ff;
    }
    .ingang-why-item:last-child {
        border-bottom: none;
    }
    .course-path-steps {
        gap: 8px;
    }
    .path-step {
        min-width: 90px;
        padding: 10px 14px;
    }
    .path-arrow {
        font-size: 1.2rem;
    }
    .course-path-extra {
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }
    .hero-online-badges {
        gap: 8px;
    }
    .online-badge {
        font-size: 0.78rem;
        padding: 6px 12px;
    }
}

/* ===== 후기 섹션 ===== */
#reviews {
    padding: 100px 0;
    background: linear-gradient(180deg, #f8faff 0%, #eff6ff 100%);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 56px;
}

.review-card {
    background: var(--white);
    border: 1.5px solid #bfdbfe;
    border-radius: var(--radius-md);
    padding: 28px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

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

.review-card-featured {
    border-color: var(--accent);
    background: linear-gradient(180deg, #fff 0%, rgba(232,160,32,0.04) 100%);
}

.review-stars {
    color: var(--accent);
    font-size: 0.9rem;
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.review-text {
    font-size: 0.9rem;
    color: var(--text-body);
    line-height: 1.8;
    margin-bottom: 20px;
    position: relative;
}

.review-text::before {
    content: '"';
    font-size: 3rem;
    color: var(--border);
    position: absolute;
    top: -20px;
    left: -5px;
    font-family: Georgia, serif;
    line-height: 1;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.author-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #2563eb, #60a5fa);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    flex-shrink: 0;
}

.author-info strong {
    display: block;
    font-size: 0.88rem;
    color: var(--text-dark);
}

.author-info span {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.review-summary {
    display: flex;
    justify-content: center;
    gap: 60px;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.summary-item {
    text-align: center;
}

.summary-num {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
}

.summary-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== FAQ 섹션 ===== */
#faq {
    padding: 100px 0;
    background: var(--white);
}

.faq-list {
    max-width: 780px;
    margin: 0 auto;
}

.faq-item {
    border: 1.5px solid #bfdbfe;
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.open {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 20px 24px;
    text-align: left;
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-dark);
    background: var(--white);
    cursor: pointer;
    transition: var(--transition);
    gap: 16px;
}

.faq-item.open .faq-question {
    background: #eff6ff;
    color: var(--primary);
}

.faq-icon {
    flex-shrink: 0;
    transition: transform var(--transition);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.faq-item.open .faq-icon {
    transform: rotate(45deg);
    color: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 24px;
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 16px 24px 24px;
}

.faq-answer p {
    font-size: 0.92rem;
    color: var(--text-body);
    line-height: 1.85;
}

/* ===== 상담 섹션 ===== */
#contact {
    padding: 100px 0;
    background: linear-gradient(160deg, #1e40af 0%, #2563eb 60%, #3b82f6 100%);
    position: relative;
    overflow: hidden;
}

#contact::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(251,191,36,0.18) 0%, transparent 70%);
    top: -100px;
    right: -100px;
    border-radius: 50%;
}

.contact-center {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 860px;
    margin: 0 auto;
}

.contact-center h2 {
    font-size: 2.4rem;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 16px;
    line-height: 1.25;
}

.contact-desc {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.85);
    line-height: 1.85;
    margin-bottom: 48px;
}

.contact-cards-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 24px;
    margin-bottom: 36px;
}

.contact-big-card {
    background: rgba(255,255,255,0.13);
    border: 1.5px solid rgba(255,255,255,0.28);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    text-align: left;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-big-card:hover {
    background: rgba(255,255,255,0.22);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.2);
}

.big-card-icon {
    font-size: 2.8rem;
    line-height: 1;
}

.big-card-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--white);
}

.big-card-desc {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.75);
    line-height: 1.75;
}

.big-card-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 7px;
    flex: 1;
}

.big-card-features li {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.88);
}

.btn-kakao {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: #fee500;
    color: #191919;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    transition: var(--transition);
    margin-top: auto;
}

.btn-kakao:hover {
    background: #ffd000;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(254,229,0,0.4);
}

.btn-kakao-big {
    padding: 16px 28px;
    font-size: 1.05rem;
    width: 100%;
    text-align: center;
}

.btn-phone {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: rgba(255,255,255,0.15);
    color: var(--white);
    border: 1.5px solid rgba(255,255,255,0.5);
    padding: 14px 28px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 700;
    transition: var(--transition);
    margin-top: auto;
}

.btn-phone:hover {
    background: rgba(255,255,255,0.28);
    transform: translateY(-2px);
}

.btn-phone-big {
    padding: 16px 28px;
    font-size: 1.05rem;
    width: 100%;
    text-align: center;
}

.contact-notice {
    background: rgba(251,191,36,0.18);
    border: 1.5px solid rgba(251,191,36,0.45);
    border-radius: var(--radius-md);
    padding: 16px 24px;
    display: inline-block;
}

.contact-notice p {
    font-size: 0.95rem;
    color: var(--white);
}

.btn-board-big {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--white);
    color: #2563eb;
    border: 2px solid rgba(255,255,255,0.7);
    padding: 16px 28px;
    border-radius: 50px;
    font-size: 1.05rem;
    font-weight: 700;
    transition: var(--transition);
    margin-top: auto;
    width: 100%;
    text-align: center;
}

.btn-board-big:hover {
    background: #eff6ff;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255,255,255,0.3);
}

@media (max-width: 768px) {
    .contact-cards-row {
        grid-template-columns: 1fr;
    }
    .contact-center h2 {
        font-size: 1.7rem;
    }
    .contact-big-card {
        padding: 28px 22px;
    }
}

/* ===== 저서 소개 섹션 ===== */
#book {
    padding: 100px 0;
    background: linear-gradient(160deg, #f0f4ff 0%, #e8f0fe 50%, #fef9ec 100%);
    position: relative;
    overflow: hidden;
}

#book::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, transparent 70%);
    top: -80px;
    left: -80px;
    border-radius: 50%;
}

.book-wrap {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 72px;
    align-items: center;
    position: relative;
    z-index: 2;
}

/* 책 표지 */
.book-cover-wrap {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.book-badge {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 7px 18px;
    border-radius: 50px;
    display: inline-block;
    margin-bottom: 4px;
    box-shadow: 0 4px 14px rgba(37,99,235,0.35);
}

.book-cover-img {
    width: 100%;
    max-width: 300px;
    border-radius: 12px;
    box-shadow:
        8px 8px 0 rgba(37,99,235,0.12),
        16px 16px 40px rgba(37,99,235,0.18),
        0 4px 80px rgba(0,0,0,0.15);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
    display: block;
}

.book-cover-img:hover {
    transform: translateY(-8px) rotate(-1deg);
    box-shadow:
        12px 16px 0 rgba(37,99,235,0.14),
        20px 24px 60px rgba(37,99,235,0.22),
        0 8px 100px rgba(0,0,0,0.18);
}

/* 책 정보 */
.book-badge-tag {
    display: inline-block;
    margin-bottom: 18px;
}

.book-title {
    font-size: 2.4rem;
    font-weight: 900;
    color: var(--text-dark);
    line-height: 1.2;
    margin-bottom: 10px;
}

.book-title em {
    font-style: normal;
    color: #2563eb;
}

.book-subtitle {
    font-size: 1.05rem;
    font-weight: 700;
    color: #64748b;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

.book-desc {
    font-size: 0.97rem;
    color: #475569;
    line-height: 1.85;
    margin-bottom: 28px;
    padding-left: 16px;
    border-left: 3px solid #2563eb;
}

.book-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 36px;
}

.book-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: #334155;
    font-weight: 500;
}

.bf-icon {
    font-size: 1.15rem;
    flex-shrink: 0;
}

.book-cta-row {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.btn-book-buy {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: #fff;
    padding: 15px 28px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 800;
    transition: var(--transition);
    box-shadow: 0 6px 20px rgba(37,99,235,0.35);
    text-decoration: none;
}

.btn-book-buy:hover {
    background: linear-gradient(135deg, #1d4ed8, #2563eb);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(37,99,235,0.45);
}

.btn-book-consult {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    color: #2563eb;
    border: 2px solid #2563eb;
    padding: 15px 28px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 800;
    transition: var(--transition);
    text-decoration: none;
}

.btn-book-consult:hover {
    background: #eff6ff;
    transform: translateY(-3px);
}

.book-publisher {
    font-size: 0.8rem;
    color: #94a3b8;
}

@media (max-width: 900px) {
    .book-wrap {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    .book-cover-wrap {
        align-items: center;
    }
    .book-desc {
        text-align: left;
    }
    .book-features li {
        justify-content: flex-start;
    }
    .book-cta-row {
        justify-content: center;
    }
    .book-title {
        font-size: 2rem;
    }
}

/* ===== 푸터 ===== */
#main-footer {
    background: #0f172a;
    color: rgba(255,255,255,0.7);
    padding: 64px 0 0;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 12px;
}

.footer-logo-en {
    font-family: 'Montserrat', 'Noto Sans KR', sans-serif;
    font-size: 1.1rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.3px;
    line-height: 1;
    white-space: nowrap;
}

.footer-logo-ko {
    font-size: 0.7rem;
    font-weight: 500;
    color: #93c5fd;
    letter-spacing: 0.4px;
    line-height: 1;
    white-space: nowrap;
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--accent-light);
    font-weight: 600;
    margin-bottom: 12px;
}

.footer-desc {
    font-size: 0.85rem;
    line-height: 1.8;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--accent);
    color: var(--white);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-link-col h4 {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-link-col ul li {
    margin-bottom: 8px;
}

.footer-link-col a {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.55);
    transition: var(--transition);
}

.footer-link-col a:hover {
    color: var(--accent-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 28px 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-info p {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.4);
}

.footer-legal {
    display: flex;
    gap: 16px;
}

.footer-legal a {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.5);
    transition: var(--transition);
}

.footer-legal a:hover {
    color: var(--accent-light);
}

.footer-copyright {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.3);
}

/* ===== 플로팅 CTA ===== */
.floating-cta {
    position: fixed;
    bottom: 90px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 900;
}

.floating-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.floating-btn:hover {
    transform: translateX(-4px);
    box-shadow: var(--shadow-lg);
}

.floating-consult {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: var(--white);
}

.floating-kakao {
    background: #fee500;
    color: #191919;
}

.floating-btn i {
    font-size: 1rem;
}

/* ===== 스크롤 TOP 버튼 ===== */
#scroll-top {
    position: fixed;
    bottom: 30px;
    right: 20px;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 0.9rem;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    z-index: 900;
    opacity: 0;
    transform: translateY(10px);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

#scroll-top.visible {
    opacity: 1;
    transform: translateY(0);
}

#scroll-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* ===== 애니메이션 클래스 ===== */
.animate-fadeup {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-fadeup.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }
.delay-4 { transition-delay: 0.6s; }

/* ===== 반응형: 태블릿 (1024px) ===== */
@media (max-width: 1024px) {
    #main-nav { display: none; }
    .hamburger { display: flex; }
    .header-cta { display: none; }

    /* 히어로 사진 크기 축소 */
    .hero-right { width: 260px; }

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

    .curriculum-detail {
        grid-template-columns: 1fr;
        padding: 32px;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 420px;
        margin: 0 auto;
    }

    .pricing-card-popular {
        transform: none;
        order: -1;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ===== 반응형: 모바일 (768px) ===== */
@media (max-width: 768px) {
    .section-header { margin-bottom: 36px; }

    #hero {
        padding-top: 100px;
        padding-bottom: 60px;
    }

    /* 히어로 세로 정렬 */
    .hero-content {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .hero-left {
        padding-bottom: 40px;
        order: 1;
    }

    /* 모바일에서 배경 인물 사진 숨김 */
    .hero-person-bg {
        display: none;
    }

    .hero-right {
        width: 200px;
        order: 0;
        align-self: center;
        position: relative;
    }

    .hero-photo-wrap {
        position: relative;
        bottom: auto;
    }

    .hero-photo-badge {
        font-size: 0.72rem;
        padding: 6px 14px;
    }

    .hero-stats {
        gap: 20px;
    }

    .stat-num { font-size: 1.6rem; }
    .stat-divider { display: none; }

    .hero-actions {
        flex-direction: column;
    }

    .btn-hero-primary, .btn-hero-secondary {
        width: 100%;
        justify-content: center;
        padding: 14px 24px;
    }

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

    .problem-reason {
        padding: 28px 20px;
    }

    .solution-features {
        grid-template-columns: 1fr;
    }

    .comparison-section {
        padding: 28px 20px;
    }

    .curriculum-tabs {
        gap: 8px;
    }

    .tab-btn {
        padding: 10px 16px;
        font-size: 0.82rem;
    }

    .curriculum-detail {
        padding: 24px;
        gap: 24px;
    }

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

    .review-summary {
        gap: 28px;
        flex-wrap: wrap;
        padding: 28px 20px;
    }

    .summary-num { font-size: 2rem; }

    .contact-form-wrap {
        padding: 28px 20px;
    }

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

    .floating-cta {
        bottom: 70px;
        right: 12px;
    }

    .floating-btn span {
        display: none;
    }

    .floating-btn {
        width: 48px;
        height: 48px;
        padding: 0;
        justify-content: center;
        border-radius: 50%;
    }
}

/* ===== 반응형: 소형 모바일 (480px) ===== */
@media (max-width: 480px) {
    .problem-grid {
        grid-template-columns: 1fr;
    }

    .hero-note {
        flex-direction: column;
        gap: 8px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
    }

    .review-summary {
        gap: 20px;
    }

    .trust-logos {
        gap: 8px;
    }

    .trust-tag {
        font-size: 0.78rem;
        padding: 6px 14px;
    }

    #notice-bar {
        font-size: 0.78rem;
        padding: 10px 36px;
    }
}

/* ===== 홍보 영상 모바일 반응형 ===== */
@media (max-width: 640px) {
    #promo-videos [style*="grid-template-columns:1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }
}