/* Premium Landing Page Styles */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #3b82f6;
    --green: #10b981;
    --orange: #f59e0b;
    --dark: #1e293b;
    --gray-900: #0f172a;
    --gray-700: #334155;
    --gray-500: #64748b;
    --gray-300: #cbd5e1;
    --gray-100: #f1f5f9;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #3b82f6 100%);
    --gradient-green: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-orange: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --gradient-dark: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    --shadow-primary: 0 10px 30px -5px rgba(99, 102, 241, 0.4);
    --shadow-green: 0 10px 30px -5px rgba(16, 185, 129, 0.4);
    --shadow-orange: 0 10px 30px -5px rgba(245, 158, 11, 0.4);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.15);
    --container-max: 680px;
    --transition-normal: 0.3s ease;
    --font-family: 'Pretendard Variable', Pretendard, -apple-system, sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--dark);
    background: var(--gray-100);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* Progress Bar */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-primary);
    z-index: 9999;
    width: 0%;
}

/* Navigation */
.nav-container {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-inner {
    display: flex;
    overflow-x: auto;
    padding: 12px 16px;
    gap: 8px;
    scrollbar-width: none;
}

.nav-inner::-webkit-scrollbar {
    display: none;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-500);
    background: var(--gray-100);
    border-radius: 50px;
    white-space: nowrap;
    transition: var(--transition-normal);
}

.nav-link:hover {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.nav-link.active {
    color: var(--white);
    background: var(--gradient-primary);
    box-shadow: var(--shadow-primary);
}

/* Hero */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, 0.3) 0%, transparent 60%);
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 150px;
    background: linear-gradient(to top, var(--gray-100), transparent);
}

.hero-content {
    max-width: 600px;
    text-align: center;
    color: var(--white);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: clamp(32px, 8vw, 48px);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #f472b6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.6;
    opacity: 0.9;
    margin-bottom: 32px;
}

.hero-subtitle strong {
    color: #fbbf24;
    font-weight: 700;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    margin-bottom: 32px;
}

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

.stat-number {
    display: block;
    font-size: 24px;
    font-weight: 800;
    color: #fbbf24;
}

.stat-label {
    font-size: 12px;
    opacity: 0.8;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 36px;
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-900);
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    border-radius: 50px;
    box-shadow: 0 10px 30px rgba(251, 191, 36, 0.4);
    transition: var(--transition-normal);
}

.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(251, 191, 36, 0.5);
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 12px;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {

    0%,
    100% {
        transform: rotate(45deg) translateY(0);
    }

    50% {
        transform: rotate(45deg) translateY(8px);
    }
}

/* Animations */
.animate-fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.animate-fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

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

/* Main Content */
.main-content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0;
}

.content-section {
    background: var(--white);
    padding: 50px 20px;
    margin-bottom: 12px;
    scroll-margin-top: 80px;
}

.section-header {
    text-align: center;
    margin-bottom: 30px;
}

.section-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 16px;
}

.section-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 12px;
}

.section-desc {
    font-size: 16px;
    color: var(--gray-500);
    line-height: 1.6;
}

.section-desc strong {
    color: var(--primary);
}

/* Calculator */
.calculator-card {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 2px solid var(--primary);
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 30px;
}

.calc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: var(--gradient-primary);
    color: var(--white);
}

.calc-header h3 {
    font-size: 18px;
    font-weight: 700;
}

.calc-badge {
    font-size: 12px;
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50px;
}

.calc-body {
    padding: 24px;
}

.calc-field {
    margin-bottom: 20px;
}

.calc-field label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.select-wrapper {
    position: relative;
}

.select-wrapper::after {
    content: '▼';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 10px;
    color: var(--gray-500);
    pointer-events: none;
}

.calc-field select,
.calc-field input {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    font-family: inherit;
    border: 2px solid var(--gray-300);
    border-radius: 12px;
    background: var(--white);
    transition: 0.15s ease;
    appearance: none;
}

.calc-field select:focus,
.calc-field input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.input-wrapper {
    position: relative;
}

.input-suffix {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-500);
    font-weight: 500;
}

.input-wrapper input {
    padding-right: 50px;
}

.field-hint {
    display: block;
    font-size: 13px;
    color: var(--gray-500);
    margin-top: 8px;
}

.calc-button {
    width: 100%;
    padding: 16px;
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    background: var(--gradient-primary);
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-primary);
}

.calc-button:hover {
    transform: translateY(-2px);
    filter: brightness(1.05);
}

.button-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% {
        left: -100%;
    }

    50%,
    100% {
        left: 100%;
    }
}

.calc-result {
    display: none;
    text-align: center;
    padding: 24px;
    background: var(--white);
    border-top: 1px dashed var(--gray-300);
}

.calc-result.show {
    display: block;
    animation: fadeInUp 0.5s ease;
}

.result-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.result-label {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 8px;
}

.result-amount {
    font-size: 36px;
    font-weight: 800;
    color: #ef4444;
    margin-bottom: 12px;
}

.result-note {
    font-size: 14px;
    color: var(--gray-500);
}

/* Buttons */
.button-group {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.cta-button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-radius: 16px;
    color: var(--white);
    transition: var(--transition-normal);
}

.cta-button.primary {
    background: var(--gradient-primary);
    box-shadow: var(--shadow-primary);
}

.cta-button.secondary {
    background: var(--gradient-dark);
    box-shadow: var(--shadow-lg);
}

.cta-button.green {
    background: var(--gradient-green);
    box-shadow: var(--shadow-green);
}

.cta-button.orange {
    background: var(--gradient-orange);
    box-shadow: var(--shadow-orange);
}

.cta-button:hover {
    transform: translateY(-3px);
    filter: brightness(1.08);
}

.btn-content {
    display: flex;
    align-items: center;
    gap: 14px;
}

.btn-icon {
    font-size: 28px;
}

.btn-text {
    text-align: left;
}

.btn-main {
    display: block;
    font-size: 17px;
    font-weight: 700;
}

.btn-sub {
    display: block;
    font-size: 13px;
    opacity: 0.8;
    margin-top: 2px;
}

.btn-arrow {
    flex-shrink: 0;
    opacity: 0.7;
}

/* Info Cards */
.info-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.info-card {
    text-align: center;
    padding: 20px 12px;
    background: var(--gray-100);
    border-radius: 16px;
    transition: var(--transition-normal);
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.info-icon {
    font-size: 32px;
    display: block;
    margin-bottom: 10px;
}

.info-card h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.info-card p {
    font-size: 12px;
    color: var(--gray-500);
}

/* Highlight Box */
.highlight-box {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(217, 119, 6, 0.1) 100%);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 16px;
    margin-bottom: 24px;
}

.highlight-icon {
    font-size: 36px;
}

.highlight-content h4 {
    font-size: 16px;
    font-weight: 700;
    color: #d97706;
    margin-bottom: 4px;
}

.highlight-content p {
    font-size: 14px;
    color: var(--gray-700);
}

/* Reviews */
.review-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.review-card {
    padding: 24px;
    background: var(--gray-100);
    border-radius: 20px;
    transition: var(--transition-normal);
}

.review-card:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.reviewer-avatar {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: var(--white);
    font-weight: 700;
    border-radius: 50%;
}

.reviewer-info {
    flex: 1;
}

.reviewer-name {
    display: block;
    font-weight: 700;
    color: var(--dark);
}

.reviewer-location {
    font-size: 13px;
    color: var(--gray-500);
}

.review-badge {
    font-size: 12px;
    padding: 4px 10px;
    background: rgba(16, 185, 129, 0.1);
    color: var(--green);
    border-radius: 50px;
    font-weight: 600;
}

.review-text {
    font-size: 15px;
    color: var(--gray-700);
    line-height: 1.7;
    margin-bottom: 16px;
}

.review-result {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    background: var(--white);
    border-radius: 12px;
}

.review-result .result-label {
    font-size: 13px;
    color: var(--gray-500);
    margin: 0;
}

.review-result .result-value {
    font-size: 20px;
    font-weight: 800;
    color: var(--secondary);
}

/* FAQ */
.faq-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--gray-100);
    border-radius: 16px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 700;
    color: var(--dark);
    text-align: left;
    transition: 0.15s ease;
}

.faq-question:hover {
    background: rgba(0, 0, 0, 0.02);
}

.faq-arrow {
    flex-shrink: 0;
    transition: transform var(--transition-normal);
}

.faq-item.open .faq-arrow {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.open .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 24px 20px;
    font-size: 15px;
    color: var(--gray-700);
    line-height: 1.7;
}

/* Ads */
.ad-container {
    padding: 0;
    margin-bottom: 12px;
}

.ad-box {
    position: relative;
    width: 100%;
    min-height: 280px;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ad-box::before {
    content: '광고 로딩중...';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-300);
    font-size: 14px;
    background: var(--gray-100);
    border: 1px dashed var(--gray-300);
}

.ad-box.ad-loaded::before {
    display: none;
}

/* Floating CTA */
.floating-cta {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-normal);
    pointer-events: none;
}

.floating-cta.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.floating-button {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 22px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50px;
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.2), var(--shadow-primary);
    font-weight: 700;
    transition: var(--transition-normal);
}

.floating-button:hover {
    transform: scale(1.05);
}

.floating-icon {
    font-size: 20px;
}

.floating-text {
    font-size: 15px;
}

/* Footer */
.footer {
    background: var(--white);
    padding: 40px 20px;
    text-align: center;
}

.footer-notice {
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 8px;
}

.footer-copyright {
    font-size: 12px;
    color: var(--gray-300);
}

/* Mobile */
@media (max-width: 480px) {
    .hero-section {
        padding: 40px 16px 20px;
        min-height: auto;
    }

    .hero-title {
        font-size: 26px;
    }

    .hero-subtitle {
        font-size: 15px;
        margin-bottom: 24px;
    }

    .hero-stats {
        gap: 12px;
        padding: 14px 12px;
        flex-wrap: wrap;
    }

    .stat-number {
        font-size: 18px;
    }

    .stat-label {
        font-size: 11px;
    }

    .stat-divider {
        height: 30px;
    }

    .hero-cta {
        padding: 14px 24px;
        font-size: 15px;
        width: 100%;
        justify-content: center;
    }

    .hero-scroll-indicator {
        display: none;
    }

    .content-section {
        padding: 36px 16px;
    }

    .section-icon {
        font-size: 40px;
    }

    .section-title {
        font-size: 20px;
    }

    .section-desc {
        font-size: 14px;
    }

    .info-cards {
        grid-template-columns: 1fr;
    }

    .floating-cta {
        bottom: 16px;
        right: 16px;
        left: 16px;
    }

    .floating-button {
        width: 100%;
        justify-content: center;
    }

    .cta-button {
        padding: 16px 18px;
    }

    .btn-main {
        font-size: 15px;
    }

    .btn-sub {
        font-size: 12px;
    }

    .btn-icon {
        font-size: 24px;
    }

    .calc-header {
        padding: 16px 18px;
    }

    .calc-header h3 {
        font-size: 16px;
    }

    .calc-body {
        padding: 18px;
    }

    .calc-button {
        padding: 14px;
        font-size: 16px;
    }

    .result-amount {
        font-size: 28px;
    }

    .review-card {
        padding: 18px;
    }

    .review-text {
        font-size: 14px;
    }

    .review-result .result-value {
        font-size: 18px;
    }

    .faq-question {
        padding: 16px 18px;
        font-size: 15px;
    }

    .faq-answer p {
        padding: 0 18px 16px;
        font-size: 14px;
    }

    .nav-link {
        padding: 8px 14px;
        font-size: 13px;
    }
}

/* Hero Ad Container - Top Position */
.hero-ad-top {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 10px 16px 0;
    position: relative;
    z-index: 10;
}

.hero-ad-top ins {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
}

/* Hero Ad Container */
.hero-ad-container {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    padding: 8px 0;
    z-index: 10;
}

.hero-ad-container ins {
    max-height: 100px;
}