:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent-1: #3b82f6;
    --accent-2: #8b5cf6;
    --accent-3: #ec4899;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    overflow-x: hidden;
    position: relative;
    padding-top: 120px; /* Space for navbar */
    padding-bottom: 50px;
}

/* Background Animations */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    filter: blur(80px);
    opacity: 0.5;
    border-radius: 50%;
    animation: float 10s infinite ease-in-out alternate;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    max-width: 500px;
    max-height: 500px;
    background: radial-gradient(circle, var(--accent-1), transparent 70%);
    animation-delay: 0s;
}

.blob-2 {
    bottom: -10%;
    right: -10%;
    width: 40vw;
    height: 40vw;
    max-width: 400px;
    max-height: 400px;
    background: radial-gradient(circle, var(--accent-2), transparent 70%);
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 50px) scale(1.1); }
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(to right, var(--accent-1), var(--accent-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-main);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--accent-1);
    transition: width 0.3s ease;
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

/* Container & Card */
.container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 800px;
    padding: 20px;
}

.profile-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.3), inset 0 0 20px rgba(255, 255, 255, 0.02);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
    /* Removed 3D transform logic */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.profile-card:hover {
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(255, 255, 255, 0.05);
}

/* Image */
.profile-image-container {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    padding: 6px;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2), var(--accent-3));
    background-size: 200% 200%;
    position: relative;
    box-shadow: 0 0 25px rgba(139, 92, 246, 0.3);
    animation: gradient-shift 5s infinite;
}

@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.profile-image {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    background-color: #0f172a;
    border: 4px solid var(--card-bg);
}

/* Profile Info */
.profile-info {
    width: 100%;
    text-align: center;
}

.profile-name {
    font-size: 2.2rem;
    line-height: 1.18;
    font-weight: 800;
    margin-bottom: 5px;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
    display: block;
    padding: 0.08em 0 0.1em;
}

.profile-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 30px;
    font-weight: 400;
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 35px;
    text-align: left;
}

.full-width {
    grid-column: 1 / -1;
}

.info-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 18px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
    /* Modern minimal hover effect */
    transition: transform 0.3s ease, background 0.3s ease;
}

.info-item:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.06);
}

.info-icon {
    font-size: 1.5rem;
    color: var(--accent-1);
    background: rgba(59, 130, 246, 0.1);
    padding: 12px;
    border-radius: 12px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-item:nth-child(2) .info-icon {
    color: var(--accent-2);
    background: rgba(139, 92, 246, 0.1);
}

.info-item:nth-child(3) .info-icon {
    color: var(--accent-3);
    background: rgba(236, 72, 153, 0.1);
}

.info-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 6px;
    font-weight: 600;
}

.info-value {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-main);
}

/* Tags */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 8px;
}

.tag {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.15));
    border: 1px solid rgba(139, 92, 246, 0.3);
    color: #e2e8f0;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.tag:hover {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.3), rgba(139, 92, 246, 0.3));
    transform: translateY(-2px);
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    width: 100%;
}

.project-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 25px;
    transition: transform 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.project-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.project-card h3 {
    font-size: 1rem;
    color: var(--accent-1);
}

.project-card h4 {
    font-size: 1.2rem;
    color: var(--text-main);
    margin-bottom: 5px;
}

.project-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    flex-grow: 1;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
    text-align: center;
    text-decoration: none;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 10px;
    font-size: 0.9rem;
    transition: background 0.3s ease;
    margin-top: 10px;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Responsive */
@media (max-width: 640px) {
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .profile-card {
        padding: 30px 20px;
    }
    
    .navbar {
        flex-direction: column;
        padding: 15px;
        gap: 15px;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    body {
        padding-top: 140px;
    }
}

/* Blog Page */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    width: 100%;
}

.blog-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    background: rgba(255, 255, 255, 0.06);
}

.blog-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: rgba(0,0,0,0.2);
}

.blog-content {
    padding: 25px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.blog-meta {
    font-size: 0.85rem;
    color: var(--accent-1);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.blog-title {
    font-size: 1.25rem;
    color: var(--text-main);
    margin-bottom: 15px;
    line-height: 1.4;
}

.blog-excerpt {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.blog-readmore {
    color: var(--accent-2);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s ease;
}

.blog-readmore:hover {
    color: var(--accent-3);
}

/* Visual Refresh */
.container-wide {
    max-width: 1180px;
}

.page-card {
    align-items: flex-start;
    text-align: left;
    padding: 44px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #bfdbfe;
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid rgba(59, 130, 246, 0.25);
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 1.4px;
    margin-bottom: 16px;
    text-transform: uppercase;
}

.intro-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(300px, 380px);
    align-items: center;
    gap: 42px;
    min-height: 520px;
    padding: 52px;
    overflow: visible;
}

.intro-copy {
    text-align: left;
}

.intro-title {
    font-size: clamp(2.15rem, 3.2vw, 3rem);
    line-height: 1.12;
    margin-bottom: 20px;
}

.page-title {
    font-size: clamp(2.15rem, 3.5vw, 3rem);
    line-height: 1.14;
    margin-bottom: 16px;
}

.intro-lead,
.page-lead {
    color: var(--text-muted);
    font-size: 1.08rem;
    line-height: 1.8;
    max-width: 680px;
    margin-bottom: 26px;
}

.quick-stats,
.metric-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    width: 100%;
    margin-bottom: 24px;
}

.quick-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 560px;
}

.stat-tile,
.metric-card {
    background: linear-gradient(145deg, rgba(255,255,255,0.075), rgba(255,255,255,0.025));
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 18px;
    padding: 18px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}

.stat-tile span,
.metric-card strong {
    display: block;
    color: var(--text-main);
    font-size: 1.45rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.stat-tile small,
.metric-card span {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.semester-tile span,
.semester-tile small {
    white-space: nowrap;
}

.semester-tile {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 18px;
}

.semester-tile i {
    color: var(--accent-1);
    font-size: 1.05rem;
}

.semester-tile span {
    font-size: 1.05rem;
    margin-bottom: 0;
}

.intro-tags {
    margin-top: 8px;
}

.portrait-panel {
    min-height: 430px;
    position: relative;
    display: grid;
    place-items: center;
}

.portrait-panel::before {
    content: none;
}

.portrait-frame {
    position: relative;
    width: min(340px, 100%);
    aspect-ratio: 3 / 4;
    border-radius: 28px;
    padding: 8px;
    background:
        linear-gradient(var(--card-bg), var(--card-bg)) padding-box,
        linear-gradient(145deg, rgba(59,130,246,0.9), rgba(236,72,153,0.65)) border-box;
    border: 1px solid transparent;
    box-shadow: 0 24px 60px rgba(0,0,0,0.34);
    z-index: 1;
}

.portrait-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    border-radius: 22px;
    border: 0;
}

@keyframes morph {
    0% { transform: rotate(-8deg) scale(1); border-radius: 36% 64% 55% 45%; }
    100% { transform: rotate(8deg) scale(1.05); border-radius: 58% 42% 38% 62%; }
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
    margin-top: 22px;
}

.insight-panel,
.project-map,
.takeaway-panel,
.blog-overview {
    width: 100%;
    margin-top: 22px;
    display: grid;
    gap: 20px;
}

.insight-panel {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: center;
    background: linear-gradient(135deg, rgba(59,130,246,0.12), rgba(236,72,153,0.07));
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 24px;
    padding: 30px;
}

.insight-panel h2,
.map-card h2,
.workflow-card h2,
.blog-overview h2 {
    color: var(--text-main);
    font-size: 1.35rem;
    margin-bottom: 10px;
}

.insight-panel p,
.blog-overview p {
    color: var(--text-muted);
    line-height: 1.7;
}

.skill-bars {
    display: grid;
    gap: 14px;
}

.skill-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px 14px;
    align-items: center;
}

.skill-row span {
    color: var(--text-main);
    font-weight: 700;
}

.skill-row strong {
    color: var(--accent-1);
    font-size: 0.9rem;
}

.skill-row div {
    grid-column: 1 / -1;
    height: 10px;
    border-radius: 999px;
    background: rgba(255,255,255,0.1);
    overflow: hidden;
}

.skill-row i {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent-1), var(--accent-3));
}

.visual-card {
    background: rgba(30, 41, 59, 0.68);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 24px;
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-height: 230px;
    position: relative;
    overflow: hidden;
}

.visual-card::after {
    content: '';
    position: absolute;
    inset: auto -40px -70px auto;
    width: 170px;
    height: 170px;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.16);
}

.visual-card h2,
.reflection-card h3 {
    color: var(--text-main);
    font-size: 1.35rem;
}

.visual-card p,
.reflection-card p {
    color: var(--text-muted);
    line-height: 1.7;
}

.span-2 {
    grid-column: span 2;
}

.visual-icon {
    width: 54px;
    height: 54px;
    display: grid;
    place-items: center;
    color: var(--accent-1);
    background: rgba(59, 130, 246, 0.14);
    border-radius: 16px;
    font-size: 1.35rem;
}

.accent-purple {
    color: var(--accent-2);
    background: rgba(139, 92, 246, 0.15);
}

.accent-pink {
    color: var(--accent-3);
    background: rgba(236, 72, 153, 0.15);
}

.roadmap-visual {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    margin-top: auto;
}

.roadmap-visual span {
    padding: 14px 8px;
    text-align: center;
    color: var(--text-main);
    background: linear-gradient(135deg, rgba(59,130,246,0.2), rgba(236,72,153,0.12));
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 14px;
    font-weight: 700;
}

.page-hero {
    width: 100%;
    display: block;
    margin-bottom: 26px;
    padding: 8px 0 22px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.page-hero .page-lead {
    max-width: 780px;
    margin-bottom: 0;
}

.metric-row {
    margin: 0 0 30px;
}

.project-map {
    grid-template-columns: 1fr 1fr;
    margin: 0 0 30px;
}

.map-card,
.workflow-card,
.takeaway-card,
.blog-overview article {
    background: rgba(255,255,255,0.035);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 22px;
    padding: 24px;
}

.skill-bars.compact {
    gap: 12px;
}

.workflow-steps {
    display: grid;
    gap: 12px;
}

.workflow-steps span {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    background: rgba(15,23,42,0.45);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 14px;
    padding: 12px 14px;
}

.workflow-steps b {
    color: var(--accent-1);
    font-size: 0.92rem;
}

.project-card {
    position: relative;
    overflow: hidden;
}

.project-visual {
    height: 96px;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(59,130,246,0.16), rgba(236,72,153,0.08));
    border: 1px solid rgba(255,255,255,0.09);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px;
    margin-bottom: 4px;
}

.project-visual i {
    color: var(--text-main);
    font-size: 2rem;
}

.project-visual span {
    width: 46%;
    height: 10px;
    border-radius: 999px;
    background: rgba(255,255,255,0.1);
    position: relative;
    overflow: hidden;
}

.project-visual span::before {
    content: '';
    position: absolute;
    inset: 0 auto 0 0;
    width: var(--level);
    background: linear-gradient(90deg, var(--accent-1), var(--accent-3));
    border-radius: inherit;
}

.summary-wheel {
    height: 260px;
    border-radius: 28px;
    display: grid;
    place-items: center;
    position: relative;
    background:
        conic-gradient(from 30deg, rgba(59,130,246,0.35), rgba(139,92,246,0.28), rgba(236,72,153,0.3), rgba(59,130,246,0.35));
    border: 1px solid rgba(255,255,255,0.14);
}

.summary-wheel::before {
    content: '';
    position: absolute;
    inset: 42px;
    border-radius: 50%;
    background: rgba(15, 23, 42, 0.86);
    border: 1px solid rgba(255,255,255,0.12);
}

.summary-wheel span {
    position: absolute;
    z-index: 1;
    color: var(--text-main);
    font-weight: 800;
    background: rgba(15,23,42,0.78);
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 999px;
    padding: 10px 13px;
}

.summary-wheel span:nth-child(1) { top: 34px; }
.summary-wheel span:nth-child(2) { left: 22px; bottom: 56px; }
.summary-wheel span:nth-child(3) { right: 28px; bottom: 56px; }

.reflection-grid {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.reflection-card {
    background: rgba(255,255,255,0.035);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 22px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.meter {
    height: 10px;
    background: rgba(255,255,255,0.09);
    border-radius: 999px;
    overflow: hidden;
    margin-top: auto;
}

.meter span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent-1), var(--accent-3));
}

.learning-timeline {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-top: 22px;
}

.learning-timeline div {
    padding: 18px;
    border-radius: 18px;
    background: rgba(15,23,42,0.46);
    border: 1px solid rgba(255,255,255,0.08);
}

.learning-timeline strong {
    color: var(--accent-1);
    font-size: 1.45rem;
    display: block;
    margin-bottom: 5px;
}

.learning-timeline span {
    color: var(--text-muted);
}

.topic-strip {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 2px 0 30px;
}

.topic-strip span {
    color: var(--text-main);
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.055);
    border-radius: 999px;
    padding: 10px 14px;
    font-size: 0.92rem;
}

.takeaway-panel {
    grid-template-columns: 1fr 1fr;
}

.takeaway-card ul {
    list-style: none;
    display: grid;
    gap: 12px;
}

.takeaway-card li {
    color: var(--text-muted);
    line-height: 1.6;
    padding-left: 20px;
    position: relative;
}

.takeaway-card li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.72em;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-1);
}

.takeaway-card.highlighted {
    background: linear-gradient(135deg, rgba(59,130,246,0.12), rgba(236,72,153,0.07));
}

.blog-overview {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin: 0 0 30px;
}

.blog-overview article {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.blog-card {
    position: relative;
}

.blog-card::after {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-1), var(--accent-2), var(--accent-3));
}

.article-visual {
    width: 100%;
    min-height: 180px;
    margin: -14px 0 34px;
    padding: 24px;
    border-radius: 24px;
    border: 1px solid rgba(255,255,255,0.1);
    background:
        radial-gradient(circle at 20% 20%, rgba(59,130,246,0.28), transparent 30%),
        linear-gradient(135deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    align-items: center;
}

.concept-node {
    min-height: 116px;
    border-radius: 20px;
    display: grid;
    place-items: center;
    gap: 8px;
    text-align: center;
    color: var(--text-main);
    background: rgba(15,23,42,0.62);
    border: 1px solid rgba(255,255,255,0.1);
    font-weight: 800;
}

.concept-node i {
    font-size: 1.8rem;
    color: var(--accent-1);
}

.concept-node.main {
    background: linear-gradient(135deg, rgba(59,130,246,0.36), rgba(139,92,246,0.22));
}

.article-visual.layered {
    grid-template-columns: 1fr;
    gap: 0;
    place-items: center;
}

.concept-layer {
    display: grid;
    place-items: center;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.15);
    color: var(--text-main);
    font-weight: 800;
}

.layer-1 { width: 100%; height: 130px; background: rgba(59,130,246,0.14); }
.layer-2 { width: 68%; height: 90px; margin-top: -115px; background: rgba(139,92,246,0.22); }
.layer-3 { width: 38%; height: 56px; margin-top: -73px; background: rgba(236,72,153,0.28); }

.article-visual.integrity {
    grid-template-columns: 140px repeat(3, 1fr);
}

.integrity-ring {
    width: 124px;
    height: 124px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: conic-gradient(var(--accent-1), var(--accent-2), var(--accent-3), var(--accent-1));
    color: var(--text-main);
    font-size: 2.1rem;
}

.article-visual.integrity > span {
    min-height: 90px;
    display: grid;
    place-items: center;
    color: var(--text-main);
    background: rgba(15,23,42,0.62);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 18px;
    font-weight: 800;
}

@media (max-width: 980px) {
    .intro-hero,
    .page-hero {
        grid-template-columns: 1fr;
    }

    .portrait-panel {
        min-height: 430px;
    }

    .intro-grid,
    .reflection-grid,
    .learning-timeline,
    .project-map,
    .blog-overview {
        grid-template-columns: 1fr 1fr;
    }

    .insight-panel {
        grid-template-columns: 1fr;
    }

    .span-2 {
        grid-column: span 2;
    }
}

@media (max-width: 640px) {
    .page-card,
    .intro-hero {
        padding: 28px 20px;
    }

    .intro-title,
    .page-title {
        font-size: 2.45rem;
    }

    .quick-stats,
    .metric-row,
    .intro-grid,
    .reflection-grid,
    .learning-timeline,
    .project-map,
    .takeaway-panel,
    .blog-overview,
    .insight-panel,
    .article-visual,
    .article-visual.integrity {
        grid-template-columns: 1fr;
    }

    .span-2 {
        grid-column: auto;
    }

    .portrait-panel {
        min-height: 360px;
    }

    .portrait-panel::before {
        width: 300px;
        height: 300px;
    }

    .portrait-frame {
        width: min(300px, 92%);
    }

    .portrait-panel {
        display: grid;
        place-items: center;
    }

    .radar-visual,
    .ai-map,
    .summary-wheel {
        height: 220px;
    }

    .roadmap-visual {
        grid-template-columns: 1fr 1fr;
    }

    .article-visual.layered {
        min-height: 210px;
    }
}