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

:root {
    --primary: #4A90D9;
    --primary-dark: #3A7BC8;
    --primary-light: #6BA5E7;
    --accent: #7B61FF;
    --bg: #0B0F1A;
    --bg-card: #131829;
    --bg-card-hover: #1A2035;
    --surface: #1E2538;
    --text: #E8ECF4;
    --text-muted: #8892A8;
    --border: #2A3248;
    --success: #10B981;
    --warning: #F59E0B;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans KR', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul { list-style: none; }

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(74,144,217,0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    width: 100%;
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.1rem;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(11,15,26,0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s;
}

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

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text);
    display: inline-flex;
    align-items: center;
}
.logo-icon {
    height: 28px;
    width: auto;
    margin-right: 8px;
}
.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 32px;
}
.nav-links a {
    font-size: 0.95rem;
    color: var(--text-muted);
    transition: color 0.2s;
}
.nav-links a:hover {
    color: var(--text);
}

.nav-cta {
    padding: 8px 20px;
    background: var(--primary);
    color: #fff;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background 0.2s;
}
.nav-cta:hover {
    background: var(--primary-dark);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: 0.3s;
}

/* ===== Hero ===== */
.hero {
    padding: 140px 0 80px;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(74,144,217,0.12) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.social-proof-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 6px 16px 6px 6px;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.avatar-group {
    display: flex;
}
.avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
    border: 2px solid var(--bg);
    margin-left: -8px;
}
.avatar:first-child { margin-left: 0; }

.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}
.highlight {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Hero Mockup */
.hero-mockup {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.mockup-header {
    display: flex;
    gap: 8px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
}
.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.dot.red { background: #FF5F56; }
.dot.yellow { background: #FFBD2E; }
.dot.green { background: #27C93F; }

.mockup-body {
    padding: 24px;
}
.stat-card {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
}
.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}
.stat-number {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--text);
}
.stat-change {
    font-size: 0.85rem;
    color: var(--success);
    font-weight: 600;
}

.mini-chart {
    display: flex;
    gap: 8px;
    align-items: flex-end;
    height: 80px;
    margin-bottom: 20px;
}
.mini-chart .bar {
    flex: 1;
    background: var(--surface);
    border-radius: 4px;
    transition: background 0.3s;
}
.mini-chart .bar.active {
    background: var(--primary);
}

.mockup-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.action-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--surface);
    border-radius: 8px;
    font-size: 0.9rem;
}
.action-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
    color: #fff;
}
.action-icon.scrap { background: var(--primary); }
.action-icon.comment { background: var(--accent); }
.action-icon.like { background: var(--warning); }

/* ===== Partners ===== */
.partners {
    padding: 48px 0;
    border-bottom: 1px solid var(--border);
}
.partners-label {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 20px;
}
.partners-logos {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
}
.partner-tag {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 8px 20px;
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== Section Common ===== */
.section-title {
    text-align: center;
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 12px;
}
.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 48px;
}

/* ===== Benefits Bento Grid ===== */
.benefits {
    padding: 100px 0;
}
.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.bento-grid.bento-2x2 {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.bento-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: all 0.3s ease;
}
.bento-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-4px);
}
.bento-card.large {
    grid-column: span 2;
}
.card-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}
.bento-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    font-weight: 700;
}
.bento-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== How it works ===== */
.how-it-works {
    padding: 100px 0;
}
.steps {
    display: flex;
    align-items: flex-start;
    gap: 0;
    justify-content: center;
}
.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    flex: 1;
    max-width: 320px;
    transition: all 0.3s ease;
}
.step-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-4px);
}
.step-number {
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 800;
    margin: 0 auto 20px;
}
.step-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
    font-weight: 700;
}
.step-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}
.step-connector {
    width: 60px;
    height: 2px;
    background: var(--border);
    margin-top: 56px;
    flex-shrink: 0;
}

/* ===== Pricing ===== */
.pricing {
    padding: 100px 0;
}
.pricing-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}
.price-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    position: relative;
    transition: all 0.3s ease;
}
.price-card:hover {
    border-color: rgba(74,144,217,0.4);
    transform: translateY(-4px);
}
.price-card.popular {
    border-color: var(--primary);
    background: linear-gradient(180deg, rgba(74,144,217,0.08) 0%, var(--bg-card) 100%);
    transform: scale(1.05);
    z-index: 1;
}
.price-card.popular:hover {
    transform: scale(1.05) translateY(-4px);
}
.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #fff;
    padding: 4px 20px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 700;
}
.price-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}
.price-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 24px;
}
.pricing-per-unit .price-card {
    text-align: center;
}
.pricing-per-unit .price-card .btn {
    margin-bottom: 0;
}
.price-header {
    margin-bottom: 24px;
}
.plan-name {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.price {
    margin-top: 8px;
}
.amount {
    font-size: 2.4rem;
    font-weight: 800;
}
.period {
    font-size: 1rem;
    color: var(--text-muted);
}

.price-card .btn {
    width: 100%;
    margin-bottom: 24px;
}

.features {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.features li {
    color: var(--text-muted);
    font-size: 0.9rem;
    padding-left: 24px;
    position: relative;
}
.features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

/* ===== Testimonials ===== */
.testimonials {
    padding: 100px 0;
}
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: all 0.3s ease;
}
.testimonial-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}
.stars {
    color: var(--warning);
    font-size: 1rem;
    margin-bottom: 14px;
    letter-spacing: 2px;
}
.testimonial-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 20px;
}
.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}
.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #fff;
    font-size: 0.9rem;
    flex-shrink: 0;
}
.testimonial-author strong {
    display: block;
    font-size: 0.9rem;
}
.testimonial-author span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ===== FAQ ===== */
.faq {
    padding: 100px 0;
}
.faq-list {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color 0.3s;
}
.faq-item.active {
    border-color: var(--primary);
}
.faq-question {
    width: 100%;
    background: none;
    border: none;
    color: var(--text);
    padding: 20px 24px;
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.2s;
}
.faq-question:hover {
    color: var(--primary);
}
.faq-toggle {
    font-size: 1.4rem;
    font-weight: 300;
    transition: transform 0.3s;
    color: var(--text-muted);
}
.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-item.active .faq-answer {
    max-height: 300px;
}
.faq-answer p {
    padding: 0 24px 20px;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

br.mob-br { display: none; }
@media (max-width: 768px) { br.mob-br { display: block; } }

/* ===== CTA Section ===== */
.cta-section {
    padding: 60px 0 100px;
}
.cta-box {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-lg);
    padding: 64px 40px;
    text-align: center;
}
.cta-box h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 14px;
}
.cta-box p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 32px;
}
.cta-box .btn-primary {
    background: #fff;
    color: var(--primary);
}
.cta-box .btn-primary:hover {
    background: #f0f0f0;
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

/* ===== Footer ===== */
.footer {
    padding: 64px 0 32px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}
.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 12px;
    line-height: 1.6;
}
.footer-col h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 16px;
}
.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-col a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color 0.2s;
}
.footer-col a:hover {
    color: var(--primary);
}
.footer-col p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 12px;
    line-height: 1.5;
}

.newsletter-form {
    display: flex;
    gap: 8px;
}
.newsletter-form input {
    flex: 1;
    padding: 10px 14px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}
.newsletter-form input:focus {
    border-color: var(--primary);
}
.newsletter-form .btn {
    padding: 10px 20px;
    font-size: 0.85rem;
    white-space: nowrap;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    text-align: center;
}
.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero h1 { font-size: 2.6rem; }
    .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-cta { display: none; }
    .mobile-toggle { display: flex; }

    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        padding: 24px;
        gap: 16px;
    }

    .hero { padding: 110px 0 60px; }
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .hero h1 { font-size: 2.2rem; }

    .bento-grid,
    .bento-grid.bento-2x2 {
        grid-template-columns: 1fr;
    }
    .bento-card.large {
        grid-column: span 1;
    }

    .steps {
        flex-direction: column;
        align-items: center;
    }
    .step-connector {
        width: 2px;
        height: 40px;
        margin: 0;
    }
    .step-card {
        max-width: 100%;
        width: 100%;
    }

    .pricing-cards {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    .price-card.popular {
        transform: none;
    }
    .price-card.popular:hover {
        transform: translateY(-4px);
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .cta-box {
        padding: 48px 24px;
    }
    .cta-box h2 {
        font-size: 1.6rem;
    }

    .section-title {
        font-size: 1.8rem;
    }
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}