:root {
    /* Colors - Premium Toss/Karrot feel */
    --c-bg: #ffffff;
    --c-text-primary: #191f28;
    /* Dark grey like Toss */
    --c-text-secondary: #8b95a1;
    /* Softer grey */

    /* User Defined Colors */
    --c-primary: #66D4C2;
    --c-primary-dark: #4db3a2;
    /* Accessible text color */
    --c-secondary: #EEFBF8;

    --c-accent: var(--c-primary);
    --c-accent-hover: var(--c-primary-dark);

    --c-card-bg: #f9fafb;
    /* Very light grey */
    --c-card-hover: #ffffff;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.12);

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 64px;

    /* Animation */
    --ease-elastic: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-smooth: cubic-bezier(0.33, 1, 0.68, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--c-bg);
    color: var(--c-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.brand {
    font-weight: 800;
    letter-spacing: -0.01em;
}

.brand-e {
    color: var(--c-primary);
}

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

/* Design System: Buttons */
.ds-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 16px;
    border-radius: 14px;
    font-weight: 800;
    line-height: 1;
    transition: transform 0.35s var(--ease-smooth), box-shadow 0.35s var(--ease-smooth), background-color 0.35s var(--ease-smooth);
    user-select: none;
}

.ds-btn:focus-visible {
    outline: 3px solid rgba(102, 212, 194, 0.35);
    outline-offset: 3px;
}

.ds-btn--primary {
    background: var(--c-primary);
    color: #ffffff;
    box-shadow: 0 10px 22px rgba(77, 179, 162, 0.24);
}

.ds-btn--primary:hover {
    background: var(--c-primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 14px 30px rgba(77, 179, 162, 0.30);
}

.ds-btn--primary:active {
    transform: translateY(-1px);
}

/* Background Mesh Gradient (Subtle) */
/* Background Mesh Gradient (Subtle) */
.background-mesh {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 10% 10%, rgba(102, 212, 194, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 90%, rgba(238, 251, 248, 0.5) 0%, transparent 40%);
    pointer-events: none;
}

.container {
    max-width: 1200px;
    /* Widen for desktop grid */
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Hero Section */
.hero {
    min-height: 90vh;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
    position: relative;
    padding-bottom: var(--spacing-xxl);
    gap: var(--spacing-xl);
}

.hero-content {
    /* Removed flex properties */
    max-width: none;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    /* Removed max-width restriction to let grid handle it */
}

.hero-image img {
    width: 100%;
    height: auto;
    object-fit: contain;
    max-height: 400px;
    filter: drop-shadow(0 10px 20px rgba(102, 212, 194, 0.2));
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    background-color: var(--c-secondary);
    color: var(--c-primary-dark);
    font-weight: 600;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.hero p {
    font-size: 1.25rem;
    color: var(--c-text-secondary);
    max-width: 80%;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--c-text-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    opacity: 0.6;
}

.scroll-indicator .arrow {
    margin-top: var(--spacing-xs);
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-5px);
    }

    60% {
        transform: translateY(-3px);
    }
}

/* Links Section */
.links-section {
    padding: var(--spacing-xxl) 0;
    position: relative;
    /* min-height removed to avoid excessive scrolling */
}

.section-category {
    font-size: 1rem;
    color: var(--c-primary-dark);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-xl);
    color: var(--c-text-primary);
}

.section-header {
    margin-bottom: var(--spacing-xl);
    text-align: left;
    /* Aligned left for a cleaner look */
}

/* Grid Layout */
.cards-grid {
    display: grid;
    /* Denser, more "tech blog"-like rows */
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* Responsiveness for Grid */
@media (max-width: 1100px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .cards-grid {
        grid-template-columns: 1fr;
    }
}

/* Card Styling */
.card {
    background: linear-gradient(180deg, rgba(238, 251, 248, 0.55) 0%, var(--c-card-bg) 60%);
    border-radius: 18px;
    padding: 20px;
    display: flex;
    flex-direction: row;
    align-items: stretch;
    gap: var(--spacing-md);
    transition: transform 0.35s var(--ease-smooth), box-shadow 0.35s var(--ease-smooth), background-color 0.35s var(--ease-smooth);
    border: 1px solid rgba(25, 31, 40, 0.06);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    aspect-ratio: 1.5 / 1;
    box-shadow: var(--shadow-sm);
    /* Default soft shadow */
}

/* When a card has a thumbnail, stack vertically */
.card--with-thumb {
    flex-direction: column;
    align-items: flex-start;
    aspect-ratio: auto;
}

.card:hover {
    background: linear-gradient(180deg, rgba(238, 251, 248, 0.75) 0%, var(--c-card-hover) 65%);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    /* Toss-like hover shadow */
    transform: translateY(-4px);
}

.card-icon {
    font-size: 2rem;
    margin: 0;
    background: linear-gradient(135deg, var(--c-secondary) 0%, rgba(102, 212, 194, 0.16) 100%);
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 18px rgba(25, 31, 40, 0.08);
    transition: transform 0.35s var(--ease-smooth);
    flex-shrink: 0;
}

/* Media thumbnail (YouTube, etc.) */
.card-thumb {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 14px;
    overflow: hidden;
    flex-shrink: 0;
    position: relative;
    background: rgba(25, 31, 40, 0.06);
    box-shadow: 0 8px 18px rgba(25, 31, 40, 0.10);
}

.card--with-thumb .card-content p {
    /* Give a touch more room since thumb adds height */
    -webkit-line-clamp: 2;
    line-clamp: 2;
}

.card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transform: scale(1.02);
    transition: transform 0.45s var(--ease-smooth);
}

.card:hover .card-thumb img {
    transform: scale(1.10);
}

.card-thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.00) 45%, rgba(0, 0, 0, 0.28) 100%);
    pointer-events: none;
}

.card-thumb-badge {
    position: absolute;
    left: 10px;
    bottom: 10px;
    z-index: 1;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    padding: 5px 9px;
    border-radius: 999px;
    background: rgba(17, 24, 39, 0.72);
    color: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(255, 255, 255, 0.14);
    backdrop-filter: blur(8px);
}

.card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.card-content {
    flex: 1;
    width: 100%;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.card-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
    word-break: keep-all;
    /* Korean word break */
    display: -webkit-box;
    line-clamp: 2;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-content p {
    color: var(--c-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 0.92rem;
    line-height: 1.5;
    line-height: 1.5;
    display: -webkit-box;
    line-clamp: 1;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    gap: 6px;
    /* Tighter gap */
    margin-top: auto;
    margin-bottom: 0;
    flex-wrap: wrap;
    align-items: center;
    width: 100%;
}

.meta-tag {
    font-size: 0.75rem;
    /* Smaller tags */
    padding: 4px 8px;
    border-radius: 8px;
    background-color: var(--c-secondary);
    color: var(--c-primary-dark);
    font-weight: 600;
}

.meta-date {
    background-color: transparent;
    color: var(--c-text-secondary);
    padding-left: 2px;
    font-size: 0.8rem;
    font-weight: 400;
    /* Removed flex: 0 0 100% to allow inline with arrow */
    margin-top: 0;
    /* Aligned with others */
}

.link-arrow {
    color: var(--c-accent);
    font-weight: 600;
    font-size: 0.95rem;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s var(--ease-smooth);
    display: inline-block;
    margin-left: auto;
    /* Push to right */
}

.card:hover .link-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* Footer */
.cta-section {
    padding: var(--spacing-xxl) 0 var(--spacing-xl);
}

.cta-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

.cta-copy {
    min-width: 0;
    text-align: center;
}

.cta-eyebrow {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--c-primary-dark);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
}

.cta-title {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--c-text-primary);
    margin-bottom: 6px;
    word-break: keep-all;
}

.cta-desc {
    color: var(--c-text-secondary);
    font-size: 0.95rem;
    max-width: 46ch;
}

.footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--c-text-secondary);
    font-size: 0.9rem;
}

.social-links a:hover {
    color: var(--c-text-primary);
    text-decoration: underline;
}

/* Animation Utilities */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s var(--ease-smooth) forwards;
}

.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s var(--ease-smooth);
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    animation-delay: 0.1s;
    transition-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
    transition-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
    transition-delay: 0.3s;
}

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

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero {
        display: flex;
        flex-direction: column;
        text-align: center;
        justify-content: center;
        height: auto;
        min-height: 100vh;
        padding-top: 100px;
    }

    .hero-content {
        margin-bottom: var(--spacing-xl);
    }

    .hero-image {
        width: 80%;
        max-width: 300px;
        margin-bottom: var(--spacing-xl);
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
        max-width: 100%;
    }

    .card {
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-lg);
        aspect-ratio: auto;
    }

    .card-icon {
        margin-bottom: var(--spacing-md);
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }

    .card-thumb {
        width: 100%;
        border-radius: 16px;
        margin-bottom: var(--spacing-md);
    }

    .link-arrow {
        opacity: 1;
        /* Always show on mobile since no hover */
        transform: translateX(0);
        margin-top: var(--spacing-sm);
    }

    .cta-card {
        padding: 22px 18px;
    }

    .cta-section .ds-btn {
        width: min(360px, 100%);
    }
}