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

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: #020617;
            background-image:
                linear-gradient(135deg, rgba(8, 15, 30, 0.98) 0%, rgba(15, 23, 42, 0.98) 48%, rgba(3, 7, 18, 1) 100%),
                repeating-linear-gradient(90deg, rgba(148, 163, 184, 0.05) 0 1px, transparent 1px 96px);
            color: #cbd5e1;
            font-size: 1rem;
            font-family: 'Poppins', sans-serif;
        }

        body.intro-active {
            overflow: hidden;
        }

        body.intro-active .hero-title,
        body.intro-active .hero-subtitle,
        body.intro-active .hero-description,
        body.intro-active .hero-actions,
        body.intro-active .hero-socials,
        body.intro-active .hero-image {
            animation-play-state: paused;
        }

        section {
            scroll-margin-top: 96px;
        }

        .intro-loader {
            position: fixed;
            inset: 0;
            z-index: 9999;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 24px;
            color: #f8fafc;
            background:
                radial-gradient(circle at 24% 44%, rgba(56, 189, 248, 0.2), transparent 34%),
                radial-gradient(circle at 72% 40%, rgba(37, 99, 235, 0.18), transparent 38%),
                linear-gradient(135deg, #020617 0%, #071427 50%, #020617 100%);
            overflow: hidden;
        }

        .intro-loader::before {
            content: "";
            position: absolute;
            inset: 0;
            z-index: 0;
            background:
                linear-gradient(90deg, rgba(14, 165, 233, 0.22), transparent 24%, transparent 76%, rgba(37, 99, 235, 0.18)),
                linear-gradient(180deg, rgba(15, 23, 42, 0.12), transparent 40%, rgba(2, 6, 23, 0.2));
            transition: opacity 0.45s ease;
            pointer-events: none;
        }

        .intro-loader::after {
            content: "";
            position: absolute;
            z-index: 0;
            width: min(72vw, 760px);
            height: min(72vw, 760px);
            border-radius: 50%;
            background: radial-gradient(circle, rgba(56, 189, 248, 0.15), rgba(37, 99, 235, 0.08), transparent 68%);
            filter: blur(24px);
            opacity: 0.85;
            transition: opacity 0.45s ease;
        }

        .intro-loader.doors-open {
            background: transparent;
        }

        .intro-loader.doors-open::before,
        .intro-loader.doors-open::after {
            opacity: 0;
        }

        .door-panel {
            position: absolute;
            top: 0;
            bottom: 0;
            z-index: 2;
            width: 50%;
            overflow: hidden;
            background:
                radial-gradient(circle at 50% 42%, rgba(56, 189, 248, 0.16), transparent 36%),
                linear-gradient(135deg, rgba(2, 6, 23, 0.98), rgba(15, 23, 42, 0.98));
            box-shadow: inset 0 0 46px rgba(56, 189, 248, 0.12);
            transition: transform 0.95s cubic-bezier(0.77, 0, 0.18, 1);
            will-change: transform;
        }

        .door-panel::after {
            content: "";
            position: absolute;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, transparent, rgba(125, 211, 252, 0.88), rgba(37, 99, 235, 0.5), transparent);
            box-shadow: 0 0 28px rgba(56, 189, 248, 0.7);
        }

        .door-panel-left {
            left: 0;
            border-right: 1px solid rgba(125, 211, 252, 0.28);
        }

        .door-panel-left::after {
            right: -1px;
        }

        .door-panel-right {
            right: 0;
            border-left: 1px solid rgba(125, 211, 252, 0.28);
        }

        .door-panel-right::after {
            left: -1px;
        }

        .doors-open .door-panel-left {
            transform: translateX(-100%);
        }

        .doors-open .door-panel-right {
            transform: translateX(100%);
        }

        .intro-content {
            position: relative;
            z-index: 3;
            display: grid;
            grid-template-columns: minmax(320px, 1fr) minmax(280px, 0.8fr);
            align-items: center;
            gap: clamp(32px, 7vw, 84px);
            width: min(1120px, 100%);
            text-align: center;
            transition: opacity 0.45s ease, transform 0.45s ease;
        }

        .doors-open .intro-content {
            opacity: 0;
            transform: scale(0.96);
        }

        .intro-card {
            position: relative;
            width: min(100%, 570px);
            min-height: 320px;
            display: grid;
            align-items: center;
            justify-items: center;
            padding: 28px;
            border: 1px solid rgba(56, 189, 248, 0.22);
            border-radius: 24px;
            overflow: hidden;
            background:
                radial-gradient(circle at 34% 45%, rgba(56, 189, 248, 0.24), transparent 30%),
                radial-gradient(circle at 74% 36%, rgba(37, 99, 235, 0.26), transparent 34%),
                linear-gradient(145deg, rgba(2, 6, 23, 0.96), rgba(15, 23, 42, 0.92));
            box-shadow: 0 0 46px rgba(56, 189, 248, 0.26), 0 26px 80px rgba(2, 6, 23, 0.56);
            animation: introSlideIn 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
            opacity: 0;
        }

        .intro-card::before,
        .intro-card::after {
            content: "";
            position: absolute;
            pointer-events: none;
        }

        .intro-card::before {
            inset: 0;
            border-radius: inherit;
            background:
                linear-gradient(180deg, rgba(56, 189, 248, 0.22), transparent 22%, transparent 80%, rgba(37, 99, 235, 0.24)),
                linear-gradient(135deg, transparent 0 18%, rgba(56, 189, 248, 0.08) 18% 19%, transparent 19% 100%);
            opacity: 0.48;
        }

        .intro-card::after {
            right: 28px;
            top: 28px;
            width: 76px;
            height: 50px;
            border-top: 2px solid rgba(125, 211, 252, 0.68);
            border-right: 2px solid rgba(56, 189, 248, 0.5);
            transform: skewX(-24deg);
        }

        .intro-photo-wrap {
            position: relative;
            z-index: 1;
            width: 128px;
            height: 128px;
            margin-bottom: 12px;
            padding: 5px;
            border-radius: 50%;
            background: linear-gradient(135deg, #7dd3fc, #38bdf8, #2563eb);
            box-shadow: 0 0 32px rgba(56, 189, 248, 0.3);
        }

        .intro-photo-wrap img {
            width: 100%;
            height: 100%;
            display: block;
            object-fit: cover;
            border-radius: 50%;
        }

        .intro-card-copy {
            position: relative;
            z-index: 1;
        }

        .intro-card-copy span {
            display: block;
            font-size: clamp(2.1rem, 6vw, 4.2rem);
            font-weight: 700;
            line-height: 1;
            letter-spacing: 0;
            background: linear-gradient(90deg, #f8fafc, #7dd3fc 44%, #38bdf8 76%, #2563eb);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            text-shadow: 0 0 24px rgba(56, 189, 248, 0.18);
        }

        .intro-card-copy p {
            margin-top: 8px;
            color: #bae6fd;
            font-size: 0.95rem;
            font-weight: 700;
            letter-spacing: 0.28em;
            text-transform: uppercase;
        }

        .intro-card-copy strong {
            display: block;
            margin-top: 10px;
            color: #f8fafc;
            font-size: 1rem;
            font-weight: 600;
        }

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

        .intro-title {
            color: #ffffff;
            font-size: clamp(1.6rem, 4.5vw, 3.2rem);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            text-shadow: 0 0 24px rgba(255, 255, 255, 0.22), 0 0 34px rgba(56, 189, 248, 0.18);
            animation: introFadeIn 0.85s ease forwards;
            animation-delay: 0.35s;
            opacity: 0;
        }

        .intro-name {
            margin-top: 18px;
            font-size: clamp(2rem, 5vw, 4.2rem);
            font-weight: 700;
            line-height: 1.08;
            letter-spacing: 0;
            background: linear-gradient(135deg, #f8fafc 0%, #7dd3fc 48%, #2563eb 100%);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            animation: introFadeIn 0.9s ease forwards;
            animation-delay: 0.65s;
            opacity: 0;
        }

        .intro-hide {
            animation: introFadeOut 0.75s ease forwards;
        }

        @keyframes introFadeIn {
            from {
                opacity: 0;
                transform: translateY(16px);
            }

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

        @keyframes introSlideIn {
            from {
                opacity: 0;
                transform: translateX(-100px) scale(0.94);
            }

            to {
                opacity: 1;
                transform: translateX(0) scale(1);
            }
        }

        @keyframes introFadeOut {
            from {
                opacity: 1;
                visibility: visible;
            }

            to {
                opacity: 0;
                visibility: hidden;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 24px;
            padding: 18px 64px;
            background-color: rgba(7, 17, 31, 0.94);
            border-bottom: 1px solid rgba(148, 163, 184, 0.18);
            box-shadow: 0 18px 45px rgba(2, 6, 23, 0.24);
            backdrop-filter: blur(16px);
        }

        .logo {
            color: #f8fafc;
            font-size: 1.15rem;
            font-weight: 700;
            text-decoration: none;
            white-space: nowrap;
            transition: color 0.3s, text-shadow 0.3s;
        }

        .logo span {
            display: inline-block;
            color: #38bdf8;
            transition: color 0.3s, transform 0.3s, text-shadow 0.3s;
        }

        .logo:hover,
        .logo:focus-visible {
            color: #38bdf8;
            text-shadow: 0 0 18px rgba(56, 189, 248, 0.35);
            outline: none;
        }

        .logo:hover span,
        .logo:focus-visible span {
            color: #7dd3fc;
            transform: translateY(-1px);
            text-shadow: 0 0 18px rgba(125, 211, 252, 0.55);
        }

        .site-nav ul {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .site-nav a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 40px;
            padding: 10px 14px;
            border-radius: 999px;
            color: #cbd5e1;
            font-size: 0.95rem;
            font-weight: 500;
            text-decoration: none;
            transition: color 0.25s ease, background-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
        }

        .site-nav a:hover,
        .site-nav a:focus-visible,
        .site-nav a.active {
            color: #f8fafc;
            background-color: rgba(56, 189, 248, 0.12);
            transform: translateY(-2px);
            outline: none;
        }

        .site-nav .nav-cta {
            color: #06111f;
            background: linear-gradient(135deg, #38bdf8, #22c55e);
            box-shadow: 0 10px 24px rgba(34, 197, 94, 0.22);
            font-weight: 700;
        }

        .site-nav .nav-cta:hover,
        .site-nav .nav-cta:focus-visible,
        .site-nav .nav-cta.active {
            color: #06111f;
            background: linear-gradient(135deg, #7dd3fc, #4ade80);
            box-shadow: 0 14px 30px rgba(56, 189, 248, 0.25);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            border: 1px solid rgba(148, 163, 184, 0.3);
            border-radius: 10px;
            background-color: rgba(15, 23, 42, 0.9);
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background-color: #f8fafc;
            border-radius: 999px;
            transition: transform 0.25s ease, opacity 0.25s ease;
        }

        .hero {
            position: relative;
            min-height: calc(100vh - 78px);
            display: flex;
            align-items: center;
            padding: 110px 64px 92px;
            color: #f8fafc;
            text-align: left;
            overflow: hidden;
            background:
                linear-gradient(135deg, rgba(8, 15, 30, 0.98) 0%, rgba(15, 23, 42, 0.98) 48%, rgba(3, 7, 18, 1) 100%),
                repeating-linear-gradient(90deg, rgba(148, 163, 184, 0.07) 0 1px, transparent 1px 96px);
        }

        .hero-content {
            width: min(1180px, 100%);
            margin: 0 auto;
            display: grid;
            grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
            align-items: center;
            gap: 64px;
        }

        .hero-text {
            max-width: 760px;
        }

        .hero-title,
        .hero-subtitle,
        .hero-description,
        .hero-actions,
        .hero-socials,
        .hero-image {
            opacity: 0;
        }

        .hero-title {
            margin-bottom: 20px;
            color: #f8fafc;
            font-size: clamp(2.45rem, 5vw, 4.9rem);
            font-weight: 700;
            line-height: 1.08;
            letter-spacing: 0;
            animation: slideInLeft 0.9s ease forwards;
        }

        .hero-title span {
            display: block;
            background: linear-gradient(135deg, #38bdf8 0%, #4ade80 100%);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
        }

        .hero-subtitle {
            max-width: 700px;
            margin-bottom: 22px;
            color: #a5f3fc;
            font-size: clamp(1rem, 2vw, 1.25rem);
            font-weight: 600;
            line-height: 1.7;
            animation: fadeUp 0.9s ease forwards;
            animation-delay: 0.3s;
        }

        .hero-description {
            max-width: 680px;
            margin-bottom: 32px;
            color: #cbd5e1;
            font-size: 1.05rem;
            font-weight: 300;
            line-height: 1.8;
            animation: fadeUp 0.9s ease forwards;
            animation-delay: 0.5s;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            margin-bottom: 28px;
            animation: fadeUp 0.9s ease forwards;
            animation-delay: 0.7s;
        }

        .hero .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            padding: 13px 22px;
            border: 1px solid rgba(148, 163, 184, 0.3);
            border-radius: 999px;
            color: #f8fafc;
            background-color: rgba(15, 23, 42, 0.74);
            box-shadow: 0 12px 30px rgba(2, 6, 23, 0.25);
            cursor: pointer;
            font-size: 0.96rem;
            font-weight: 700;
            text-decoration: none;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
        }

        .hero .btn:hover,
        .hero .btn:focus-visible {
            transform: translateY(-4px);
            border-color: rgba(56, 189, 248, 0.7);
            box-shadow: 0 18px 38px rgba(8, 145, 178, 0.2);
            outline: none;
        }

        .hero .btn-primary {
            color: #06111f;
            border-color: transparent;
            background: linear-gradient(135deg, #38bdf8, #22c55e);
        }

        .hero .btn-primary:hover,
        .hero .btn-primary:focus-visible {
            background: linear-gradient(135deg, #7dd3fc, #4ade80);
        }

        .hero-socials {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            animation: fadeIn 1s ease forwards;
            animation-delay: 0.9s;
        }

        .hero-socials a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 42px;
            padding: 10px 16px;
            border: 1px solid rgba(148, 163, 184, 0.24);
            border-radius: 999px;
            color: #cbd5e1;
            background-color: rgba(15, 23, 42, 0.62);
            font-size: 0.95rem;
            font-weight: 600;
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
        }

        .hero-socials a:hover,
        .hero-socials a:focus-visible {
            color: #ffffff;
            border-color: rgba(74, 222, 128, 0.7);
            transform: translateY(-3px);
            outline: none;
        }

        .hero-image {
            display: flex;
            justify-content: center;
            animation: fadeIn 1s ease forwards;
            animation-delay: 0.9s;
        }

        .profile-card {
            width: min(100%, 380px);
            aspect-ratio: 1;
            padding: 14px;
            border: 1px solid rgba(148, 163, 184, 0.24);
            border-radius: 50%;
            background: linear-gradient(145deg, rgba(15, 23, 42, 0.95), rgba(20, 83, 45, 0.24));
            box-shadow: 0 28px 70px rgba(2, 6, 23, 0.38);
        }

        .profile-card img {
            width: 100%;
            height: 100%;
            display: block;
            object-fit: cover;
            border-radius: 50%;
        }

        @keyframes slideInLeft {
            from {
                opacity: 0;
                transform: translateX(-42px);
            }

            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }

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

        @keyframes fadeIn {
            from {
                opacity: 0;
            }

            to {
                opacity: 1;
            }
        }

        .reveal,
        .reveal-up,
        .reveal-left,
        .reveal-right {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .reveal-left {
            transform: translateX(-40px);
        }

        .reveal-right {
            transform: translateX(40px);
        }

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

        .about,
        .skills,
        .experience,
        .certifications,
        .services,
        .research,
        .games,
        .portfolio,
        .contact {
            padding: 80px 20px;
            text-align: center;
            color: #cbd5e1;
            background:
                linear-gradient(180deg, rgba(15, 23, 42, 0.82), rgba(2, 6, 23, 0.94)),
                repeating-linear-gradient(90deg, rgba(148, 163, 184, 0.04) 0 1px, transparent 1px 96px);
        }

        .about {
            background:
                linear-gradient(180deg, rgba(15, 23, 42, 0.92), rgba(2, 6, 23, 0.96)),
                repeating-linear-gradient(90deg, rgba(148, 163, 184, 0.04) 0 1px, transparent 1px 96px);
        }

        .about h2,
        .skills h2,
        .experience h2,
        .certifications h2,
        .services h2,
        .research h2,
        .games h2,
        .portfolio h2 {
            font-size: 2.3rem;
            color: #f8fafc;
            margin-bottom: 30px;
            letter-spacing: 1px;
        }

        .section-subtitle {
            margin: -18px auto 28px;
            color: #7dd3fc;
            font-size: 1.05rem;
            font-weight: 600;
        }

        .section-subheading {
            margin: 0 auto 24px;
            color: #7dd3fc;
            font-size: 1.25rem;
            font-weight: 700;
        }

        .certifications-group {
            max-width: 1120px;
            margin: 0 auto;
        }

        .achievements-group {
            margin-top: 58px;
        }

        .certifications .certifications-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 24px;
            align-items: stretch;
        }

        .certification-flip-card {
            min-height: 430px;
            perspective: 1200px;
            cursor: pointer;
            outline: none;
        }

        .flip-card-inner {
            position: relative;
            width: 100%;
            height: 100%;
            min-height: 430px;
            transition: transform 0.75s cubic-bezier(0.2, 0.65, 0.2, 1);
            transform-style: preserve-3d;
        }

        .certification-flip-card.is-flipped .flip-card-inner {
            transform: rotateY(180deg);
        }

        .flip-card-face {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 22px;
            color: #cbd5e1;
            text-align: center;
            background-color: #111827;
            border: 1px solid rgba(148, 163, 184, 0.18);
            border-radius: 12px;
            box-shadow: 0 18px 42px rgba(2, 6, 23, 0.28);
            backface-visibility: hidden;
            overflow: hidden;
        }

        .flip-card-front {
            gap: 16px;
        }

        .flip-card-front img {
            width: 100%;
            height: auto;
            max-height: 330px;
            flex: 1 1 auto;
            min-height: 0;
            object-fit: contain;
            border-radius: 8px;
            background-color: #020617;
        }

        .flip-card-hint {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 5px;
            margin: 0;
            padding: 7px 12px;
            color: #dff7ff;
            font-size: 0.82rem;
            font-weight: 700;
            line-height: 1;
            border: 1px solid rgba(56, 189, 248, 0.24);
            border-radius: 999px;
            background: rgba(8, 47, 73, 0.28);
            box-shadow: 0 0 0 rgba(56, 189, 248, 0);
            transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease,
                box-shadow 0.25s ease, transform 0.25s ease;
            will-change: box-shadow, transform;
        }

        .flip-card-hint-arrow {
            display: inline-block;
            transition: transform 0.25s ease;
        }

        .certification-flip-card:hover .flip-card-hint,
        .certification-flip-card:focus-visible .flip-card-hint {
            color: #f8fafc;
            border-color: rgba(125, 211, 252, 0.72);
            background: rgba(14, 116, 144, 0.2);
            box-shadow: 0 0 18px rgba(56, 189, 248, 0.26);
            transform: translateY(-1px);
        }

        .certification-flip-card:hover .flip-card-hint-arrow,
        .certification-flip-card:focus-visible .flip-card-hint-arrow {
            transform: translate(4px, -1px);
        }

        .flip-card-back {
            justify-content: flex-start;
            transform: rotateY(180deg);
            overflow-y: auto;
        }

        .flip-card-back h3,
        .certificate-placeholder h3 {
            color: #f8fafc;
            font-size: 1.35rem;
            line-height: 1.25;
            margin-bottom: 12px;
        }

        .flip-card-back p {
            font-size: 0.95rem;
            line-height: 1.65;
        }

        .flip-card-back .card-tags {
            margin: 12px 0 16px;
        }

        .certificate-placeholder {
            width: 100%;
            min-height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 12px;
            padding: 28px 20px;
            border: 1px dashed rgba(56, 189, 248, 0.3);
            border-radius: 10px;
            background:
                linear-gradient(135deg, rgba(56, 189, 248, 0.12), rgba(34, 197, 94, 0.08)),
                rgba(15, 23, 42, 0.88);
        }

        .certificate-placeholder p {
            color: #94a3b8;
            font-size: 0.95rem;
        }

        .certification-flip-card:hover .flip-card-face,
        .certification-flip-card:focus-visible .flip-card-face {
            border-color: rgba(56, 189, 248, 0.46);
            box-shadow: 0 24px 52px rgba(8, 145, 178, 0.2);
        }

        .achievements-grid {
            display: grid;
            grid-template-columns: repeat(5, minmax(0, 1fr));
            gap: 18px;
        }

        .achievement-card,
        .achievement-modal-card {
            --achievement-accent: #38bdf8;
            --achievement-accent-soft: rgba(56, 189, 248, 0.16);
            --achievement-accent-border: rgba(56, 189, 248, 0.4);
            --achievement-accent-shadow: rgba(56, 189, 248, 0.2);
        }

        .achievement-card[data-theme="gold"],
        .achievement-modal-card[data-theme="gold"] {
            --achievement-accent: #facc15;
            --achievement-accent-soft: rgba(250, 204, 21, 0.14);
            --achievement-accent-border: rgba(250, 204, 21, 0.48);
            --achievement-accent-shadow: rgba(250, 204, 21, 0.24);
        }

        .achievement-card[data-theme="silver"],
        .achievement-modal-card[data-theme="silver"] {
            --achievement-accent: #cbd5e1;
            --achievement-accent-soft: rgba(203, 213, 225, 0.13);
            --achievement-accent-border: rgba(203, 213, 225, 0.42);
            --achievement-accent-shadow: rgba(203, 213, 225, 0.18);
        }

        .achievement-card[data-theme="bronze"],
        .achievement-modal-card[data-theme="bronze"] {
            --achievement-accent: #f59e0b;
            --achievement-accent-soft: rgba(245, 158, 11, 0.14);
            --achievement-accent-border: rgba(245, 158, 11, 0.42);
            --achievement-accent-shadow: rgba(245, 158, 11, 0.2);
        }

        .achievement-card[data-theme="cyan"],
        .achievement-modal-card[data-theme="cyan"] {
            --achievement-accent: #38bdf8;
            --achievement-accent-soft: rgba(56, 189, 248, 0.16);
            --achievement-accent-border: rgba(56, 189, 248, 0.44);
            --achievement-accent-shadow: rgba(56, 189, 248, 0.22);
        }

        .achievement-card[data-theme="purple"],
        .achievement-modal-card[data-theme="purple"] {
            --achievement-accent: #a78bfa;
            --achievement-accent-soft: rgba(167, 139, 250, 0.15);
            --achievement-accent-border: rgba(167, 139, 250, 0.42);
            --achievement-accent-shadow: rgba(167, 139, 250, 0.2);
        }

        .achievement-card {
            min-height: 178px;
            padding: 24px 16px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 12px;
            color: #cbd5e1;
            font-family: inherit;
            text-align: center;
            border: 1px solid rgba(148, 163, 184, 0.18);
            border-radius: 14px;
            background:
                linear-gradient(145deg, rgba(15, 23, 42, 0.72), rgba(17, 24, 39, 0.94)),
                rgba(15, 23, 42, 0.84);
            box-shadow: 0 18px 42px rgba(2, 6, 23, 0.22);
            cursor: pointer;
            transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease,
                background-color 0.28s ease;
        }

        .achievement-card:hover,
        .achievement-card:focus-visible {
            border-color: var(--achievement-accent-border);
            box-shadow: 0 24px 52px var(--achievement-accent-shadow), inset 0 0 26px var(--achievement-accent-soft);
            transform: translateY(-6px) scale(1.02);
            outline: none;
        }

        .achievement-icon {
            width: 66px;
            height: 66px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--achievement-accent);
            border: 1px solid var(--achievement-accent-border);
            border-radius: 18px;
            background: var(--achievement-accent-soft);
            box-shadow: 0 0 28px var(--achievement-accent-shadow);
            transition: transform 0.28s ease, box-shadow 0.28s ease;
        }

        .achievement-card:hover .achievement-icon,
        .achievement-card:focus-visible .achievement-icon {
            box-shadow: 0 0 34px var(--achievement-accent-shadow);
            transform: scale(1.05);
        }

        .achievement-icon i {
            line-height: 1;
        }

        .achievement-badge {
            padding: 5px 10px;
            color: var(--achievement-accent);
            font-size: 0.72rem;
            font-weight: 700;
            line-height: 1;
            border: 1px solid var(--achievement-accent-border);
            border-radius: 999px;
            background: var(--achievement-accent-soft);
        }

        .achievement-title {
            color: #f8fafc;
            font-size: 1rem;
            font-weight: 700;
            line-height: 1.25;
        }

        .achievement-label {
            color: var(--achievement-accent);
            font-size: 0.84rem;
            font-weight: 600;
            line-height: 1.35;
        }

        @media (max-width: 1100px) {
            .achievements-grid {
                grid-template-columns: repeat(3, minmax(0, 1fr));
            }
        }

        body.achievement-modal-open {
            overflow: hidden;
        }

        .achievement-modal {
            position: fixed;
            inset: 0;
            z-index: 1200;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 24px;
            background: rgba(2, 6, 23, 0.72);
            backdrop-filter: blur(12px);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.28s ease;
        }

        .achievement-modal.is-open {
            opacity: 1;
            pointer-events: auto;
        }

        .achievement-modal-card {
            position: relative;
            width: min(620px, 100%);
            max-height: min(720px, calc(100vh - 48px));
            overflow-y: auto;
            padding: 34px;
            color: #cbd5e1;
            text-align: center;
            border: 1px solid var(--achievement-accent-border);
            border-radius: 18px;
            background:
                linear-gradient(145deg, rgba(15, 23, 42, 0.92), rgba(17, 24, 39, 0.98)),
                rgba(15, 23, 42, 0.96);
            box-shadow: 0 34px 90px rgba(2, 6, 23, 0.5), 0 0 40px var(--achievement-accent-shadow);
            transform: translateY(16px) scale(0.96);
            transition: transform 0.28s ease;
        }

        .achievement-modal.is-open .achievement-modal-card {
            transform: translateY(0) scale(1);
        }

        .achievement-modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #cbd5e1;
            font-size: 1.45rem;
            line-height: 1;
            border: 1px solid rgba(148, 163, 184, 0.18);
            border-radius: 50%;
            background: rgba(15, 23, 42, 0.9);
            cursor: pointer;
            transition: color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .achievement-modal-close:hover,
        .achievement-modal-close:focus-visible {
            color: #f8fafc;
            border-color: rgba(56, 189, 248, 0.52);
            box-shadow: 0 0 18px rgba(56, 189, 248, 0.2);
            outline: none;
        }

        .achievement-modal-icon {
            width: 76px;
            height: 76px;
            margin: 0 auto 18px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--achievement-accent);
            font-size: 2.35rem;
            border: 1px solid var(--achievement-accent-border);
            border-radius: 22px;
            background: var(--achievement-accent-soft);
            box-shadow: 0 0 34px var(--achievement-accent-shadow);
        }

        .achievement-modal-icon i {
            line-height: 1;
        }

        .achievement-modal-card h3 {
            margin: 14px 0 12px;
            color: #f8fafc;
            font-size: clamp(1.55rem, 4vw, 2.2rem);
            line-height: 1.18;
        }

        .achievement-modal-event {
            margin: -4px 0 14px;
            color: var(--achievement-accent);
            font-weight: 700;
        }

        .achievement-modal-card p {
            font-size: 1rem;
            line-height: 1.7;
        }

        .achievement-modal-skills {
            margin: 16px 0 18px;
        }

        .about-content {
            max-width: 1000px;
            margin: 0 auto;
        }

        .about-copy {
            max-width: 920px;
            margin: 28px auto 0;
            display: grid;
            gap: 18px;
        }

        .about-copy p {
            color: #cbd5e1;
            font-size: 1.08rem;
            line-height: 1.85;
        }

        .about .about-copy.reveal-up {
            transition-delay: 0.18s;
        }

        .about .photo {
            width: 220px;
            height: 220px;
            border-radius: 50%;
            margin: 20px auto;
            border: 6px solid rgba(56, 189, 248, 0.7);
            overflow: hidden;
            transition: transform 0.3s;
        }

        .about .photo img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .about .photo:hover {
            transform: scale(1.1);
        }

        .about-highlights {
            max-width: 920px;
            margin: 34px auto 0;
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 16px;
        }

        .about-highlight-card {
            min-height: 92px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 18px 14px;
            border: 1px solid rgba(56, 189, 248, 0.2);
            border-radius: 12px;
            background: rgba(17, 24, 39, 0.82);
            color: #f8fafc;
            font-size: 0.98rem;
            font-weight: 700;
            line-height: 1.4;
            box-shadow: 0 18px 38px rgba(2, 6, 23, 0.24);
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .about-highlight-card:hover {
            transform: translateY(-8px);
            border-color: rgba(56, 189, 248, 0.5);
            box-shadow: 0 22px 46px rgba(8, 145, 178, 0.16);
        }

        .services-grid,
        .portfolio-grid,
        .research-grid,
        .games-grid,
        .skills-grid,
        .certifications-grid,
        .experience-grid {
            display: flex;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
            margin-top: 30px;
        }


        .service-card,
        .portfolio-card,
        .research-card,
        .game-card,
        .skill-card,
        .certification-card,
        .experience-card {
            width: 300px;
            padding: 25px;
            background-color: #111827;
            border: 1px solid rgba(148, 163, 184, 0.18);
            border-radius: 12px;
            box-shadow: 0 18px 42px rgba(2, 6, 23, 0.28);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        a.game-card {
            color: inherit;
            text-decoration: none;
        }

        .service-card:hover,
        .portfolio-card:hover,
        .research-card:hover,
        .game-card:hover,
        .skill-card:hover,
        .certification-card:hover,
        .experience-card:hover {
            transform: translateY(-15px);
            border-color: rgba(56, 189, 248, 0.46);
            box-shadow: 0 24px 52px rgba(8, 145, 178, 0.2);
        }

        .service-card h3,
        .portfolio-card h3,
        .research-card h3,
        .game-card h3,
        .skill-card h3,
        .certification-card h3,
        .experience-card h3 {
            font-size: 2rem;
            margin-bottom: 15px;
            color: #f8fafc;
        }

        .service-card p,
        .portfolio-card p,
        .research-card p,
        .game-card p,
        .skill-card p,
        .certification-card p,
        .experience-card p {
            font-size: 1.3rem;
            color: #cbd5e1;
        }

        .card-badge {
            display: inline-flex;
            margin-bottom: 14px;
            padding: 6px 10px;
            color: #38bdf8;
            font-size: 0.78rem;
            font-weight: 700;
            line-height: 1.2;
            border: 1px solid rgba(56, 189, 248, 0.24);
            border-radius: 999px;
            background-color: rgba(56, 189, 248, 0.08);
        }

        .experience-card .experience-meta,
        .experience-card .experience-organization,
        .experience-card .experience-duration,
        .certification-card .experience-meta,
        .certification-card .experience-organization,
        .certification-card .experience-duration {
            margin-bottom: 8px;
            font-size: 0.95rem;
            line-height: 1.5;
        }

        .experience-card .experience-meta,
        .certification-card .experience-meta {
            color: #f8fafc;
            font-weight: 600;
        }

        .experience-card .experience-organization,
        .experience-card .experience-duration,
        .certification-card .experience-organization,
        .certification-card .experience-duration {
            color: #94a3b8;
        }

        .card-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
            margin-top: 18px;
        }

        .card-tags span {
            padding: 6px 10px;
            color: #7dd3fc;
            font-size: 0.78rem;
            font-weight: 600;
            line-height: 1.2;
            border: 1px solid rgba(56, 189, 248, 0.22);
            border-radius: 999px;
            background-color: rgba(56, 189, 248, 0.08);
        }

        .card-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 22px;
        }

        .card-actions a,
        .card-button,
        .portfolio-card .card-actions a,
        .research-card .card-actions a,
        .game-card .card-actions a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 42px;
            padding: 10px 16px;
            margin-top: 0;
            color: #06111f;
            font-size: 0.92rem;
            font-weight: 700;
            text-decoration: none;
            border: 0;
            border-radius: 999px;
            background: linear-gradient(135deg, #38bdf8, #22c55e);
            box-shadow: none;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .card-actions a:hover,
        .card-actions a:focus-visible,
        a.game-card:hover .card-button,
        a.game-card:focus-visible .card-button,
        .portfolio-card .card-actions a:hover,
        .portfolio-card .card-actions a:focus-visible,
        .research-card .card-actions a:hover,
        .research-card .card-actions a:focus-visible,
        .game-card .card-actions a:hover,
        .game-card .card-actions a:focus-visible {
            color: #06111f;
            box-shadow: 0 14px 28px rgba(56, 189, 248, 0.22);
            transform: translateY(-2px);
            outline: none;
        }

        .card-button-disabled {
            color: #94a3b8;
            cursor: not-allowed;
            background: rgba(148, 163, 184, 0.12);
            border: 1px solid rgba(148, 163, 184, 0.18);
            box-shadow: none;
        }

        .portfolio-card a {
            display: block;
            padding: 10px 20px;
            background: linear-gradient(135deg, #38bdf8, #22c55e);
            border-radius: 25px;
            color: #06111f;
            text-decoration: none;
            margin-top: 20px;
            font-weight: 600;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .portfolio-card a:hover {
            box-shadow: 0 14px 28px rgba(56, 189, 248, 0.22);
            transform: translateY(-2px);
        }

        .portfolio-card .card-actions a,
        .research-card .card-actions a,
        .game-card .card-actions a {
            display: inline-flex;
            margin-top: 0;
            border-radius: 999px;
        }

        .contact-content {
            width: min(1180px, 100%);
            margin: 0 auto;
        }

        .contact-heading {
            max-width: 680px;
            margin: 0 auto 34px;
        }

        .contact h2 {
            font-size: clamp(2.2rem, 4vw, 3rem);
            color: #f8fafc;
            margin-bottom: 14px;
            letter-spacing: 1px;
            line-height: 1.15;
        }

        .contact-intro {
            color: #cbd5e1;
            font-size: 1.08rem;
            line-height: 1.7;
        }

        .contact-methods {
            width: 100%;
            margin: 0 auto 42px;
            display: grid;
            grid-template-columns: repeat(5, minmax(0, 220px));
            justify-content: center;
            gap: 18px;
        }

        .contact-card {
            min-height: 132px;
            padding: 22px 16px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 11px;
            color: #f8fafc;
            text-decoration: none;
            background-color: #111827;
            border: 1px solid rgba(148, 163, 184, 0.16);
            border-radius: 12px;
            box-shadow: 0 16px 36px rgba(2, 6, 23, 0.24);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease, background-color 0.3s ease;
        }

        .contact-card:hover,
        .contact-card:focus-visible {
            transform: translateY(-6px);
            border-color: rgba(56, 189, 248, 0.52);
            background-color: #1e293b;
            box-shadow: 0 24px 52px rgba(8, 145, 178, 0.2);
            outline: none;
        }

        .contact-icon {
            width: 52px;
            height: 52px;
            flex: 0 0 52px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #38bdf8;
            border-radius: 50%;
            background: rgba(56, 189, 248, 0.1);
            border: 1px solid rgba(56, 189, 248, 0.22);
            overflow: hidden;
        }

        .contact-card svg,
        .contact-icon svg {
            width: 22px;
            height: 22px;
            max-width: 22px;
            max-height: 22px;
            display: block;
            flex: 0 0 22px;
        }

        .contact-icon path {
            fill: none;
            stroke: currentColor;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .contact-card[href*="github"] .contact-icon path {
            fill: currentColor;
            stroke: none;
        }

        .contact-card-text {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
        }

        .contact-label {
            color: #f8fafc;
            font-size: 1.03rem;
            font-weight: 600;
            line-height: 1.2;
        }

        .contact-note {
            color: #94a3b8;
            font-size: 0.9rem;
            line-height: 1.4;
        }

        .contact-form-panel {
            width: min(680px, 100%);
            margin: 6px auto 0;
            padding: 26px;
            background-color: #111827;
            border: 1px solid rgba(148, 163, 184, 0.18);
            border-radius: 12px;
            box-shadow: 0 22px 52px rgba(2, 6, 23, 0.32);
        }

        .contact-form-panel h3 {
            margin-bottom: 18px;
            color: #f8fafc;
            font-size: 1.25rem;
        }

        .contact form {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 100%;
            margin: 0 auto;
        }

        .contact input,
        .contact textarea {
            padding: 14px;
            border: 1px solid rgba(148, 163, 184, 0.22);
            border-radius: 8px;
            background-color: #0f172a;
            color: #f8fafc;
            font-size: 1.1rem;
        }

        .contact input::placeholder,
        .contact textarea::placeholder {
            color: #94a3b8;
        }

        .contact input[type="submit"] {
            color: #06111f;
            background: linear-gradient(135deg, #38bdf8, #22c55e);
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            font-weight: 700;
        }

        .contact input[type="submit"]:hover {
            box-shadow: 0 14px 28px rgba(56, 189, 248, 0.22);
            transform: translateY(-2px);
        }

        #contact.contact .contact-content {
            width: min(1180px, 100%) !important;
            margin: 0 auto !important;
        }

        #contact.contact .contact-heading {
            max-width: 680px !important;
            margin: 0 auto 34px !important;
            text-align: center !important;
        }

        #contact.contact .contact-methods {
            width: 100% !important;
            margin: 0 auto 42px !important;
            display: grid !important;
            grid-template-columns: repeat(5, minmax(0, 220px)) !important;
            justify-content: center !important;
            align-items: stretch !important;
            gap: 18px !important;
        }

        #contact.contact a.contact-card {
            width: auto !important;
            min-height: 132px !important;
            padding: 22px 16px !important;
            display: flex !important;
            flex-direction: column !important;
            align-items: center !important;
            justify-content: center !important;
            gap: 11px !important;
            color: #f8fafc !important;
            text-align: center !important;
            text-decoration: none !important;
            background-color: #111827 !important;
            border: 1px solid rgba(148, 163, 184, 0.16) !important;
            border-radius: 12px !important;
            box-shadow: 0 16px 36px rgba(2, 6, 23, 0.24) !important;
        }

        #contact.contact a.contact-card:link,
        #contact.contact a.contact-card:visited {
            color: #f8fafc !important;
            text-decoration: none !important;
        }

        #contact.contact a.contact-card:hover,
        #contact.contact a.contact-card:focus-visible {
            transform: translateY(-6px) !important;
            border-color: rgba(56, 189, 248, 0.52) !important;
            background-color: #1e293b !important;
            box-shadow: 0 24px 52px rgba(8, 145, 178, 0.2) !important;
            outline: none !important;
        }

        #contact.contact .contact-icon {
            width: 52px !important;
            height: 52px !important;
            flex: 0 0 52px !important;
            display: inline-flex !important;
            align-items: center !important;
            justify-content: center !important;
            color: #38bdf8 !important;
            border-radius: 50% !important;
            background: rgba(56, 189, 248, 0.1) !important;
            border: 1px solid rgba(56, 189, 248, 0.22) !important;
            overflow: hidden !important;
        }

        #contact.contact .contact-card svg,
        #contact.contact .contact-icon svg {
            width: 22px !important;
            height: 22px !important;
            max-width: 22px !important;
            max-height: 22px !important;
            display: block !important;
            flex: 0 0 22px !important;
        }

        #contact.contact .contact-card-text {
            display: flex !important;
            flex-direction: column !important;
            align-items: center !important;
            gap: 3px !important;
        }

        #contact.contact .contact-label,
        #contact.contact .contact-note {
            display: block !important;
            text-decoration: none !important;
        }

        #contact.contact .contact-label {
            color: #f8fafc !important;
            font-size: 1.03rem !important;
            font-weight: 600 !important;
            line-height: 1.2 !important;
        }

        #contact.contact .contact-note {
            color: #94a3b8 !important;
            font-size: 0.9rem !important;
            line-height: 1.4 !important;
        }

        #contact.contact .contact-form-panel {
            width: min(680px, 100%) !important;
            margin: 6px auto 0 !important;
        }

        .contact-toast {
            position: fixed;
            left: 50%;
            bottom: 24px;
            z-index: 1300;
            padding: 12px 18px;
            color: #f8fafc;
            font-size: 0.95rem;
            font-weight: 700;
            line-height: 1.4;
            white-space: nowrap;
            border: 1px solid rgba(56, 189, 248, 0.36);
            border-radius: 999px;
            background: rgba(15, 23, 42, 0.94);
            box-shadow: 0 18px 42px rgba(2, 6, 23, 0.35), 0 0 24px rgba(56, 189, 248, 0.16);
            opacity: 0;
            pointer-events: none;
            transform: translate(-50%, 12px);
            transition: opacity 0.25s ease, transform 0.25s ease;
        }

        .contact-toast.is-visible {
            opacity: 1;
            transform: translate(-50%, 0);
        }

        footer {
            text-align: center;
            padding: 20px;
            background-color: #020617;
            border-top: 1px solid rgba(148, 163, 184, 0.18);
            font-size: 1.3rem;
            color: #cbd5e1;
        }

        @media (max-width: 900px) {
            .site-header {
                padding: 16px 24px;
            }

            .about-highlights {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

            .contact-methods {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

            .certifications .certifications-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

            .achievements-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

            #contact.contact .contact-methods {
                grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
            }

            .intro-content {
                grid-template-columns: 1fr;
                gap: 28px;
                justify-items: center;
            }

            .intro-card {
                width: min(100%, 500px);
                min-height: 280px;
            }

            .intro-text {
                text-align: center;
            }

            .hero {
                min-height: auto;
                padding: 88px 24px 72px;
                text-align: center;
            }

            .hero-content {
                grid-template-columns: 1fr;
                gap: 42px;
            }

            .hero-text {
                max-width: 720px;
                margin: 0 auto;
            }

            .hero-title span {
                display: inline;
            }

            .hero-actions,
            .hero-socials {
                justify-content: center;
            }

            .hero-image {
                order: -1;
            }

            .profile-card {
                width: min(100%, 320px);
            }

            .nav-toggle {
                display: inline-flex;
            }

            .site-nav {
                position: absolute;
                top: calc(100% + 12px);
                left: 16px;
                right: 16px;
                max-height: 0;
                overflow: hidden;
                opacity: 0;
                transform: translateY(-10px);
                border: 1px solid rgba(148, 163, 184, 0.18);
                border-radius: 18px;
                background-color: rgba(8, 15, 30, 0.98);
                box-shadow: 0 24px 60px rgba(2, 6, 23, 0.38);
                transition: max-height 0.3s ease, opacity 0.25s ease, transform 0.25s ease;
            }

            .site-header.nav-open .site-nav {
                max-height: 460px;
                opacity: 1;
                transform: translateY(0);
            }

            .site-header.nav-open .nav-toggle span:nth-child(1) {
                transform: translateY(7px) rotate(45deg);
            }

            .site-header.nav-open .nav-toggle span:nth-child(2) {
                opacity: 0;
            }

            .site-header.nav-open .nav-toggle span:nth-child(3) {
                transform: translateY(-7px) rotate(-45deg);
            }

            .site-nav ul {
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
                padding: 12px;
            }

            .site-nav a {
                justify-content: center;
                width: 100%;
                padding: 12px 16px;
            }
        }

        @media (max-width: 480px) {
            .site-header {
                padding: 14px 16px;
            }

            .about-copy p {
                font-size: 1rem;
            }

            .about-highlights {
                grid-template-columns: 1fr;
            }

            .about-highlight-card {
                min-height: 74px;
            }

            .contact {
                padding: 64px 16px;
            }

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

            .certification-flip-card,
            .flip-card-inner {
                min-height: 460px;
            }

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

            .achievement-card {
                min-height: 148px;
            }

            .achievement-modal {
                padding: 16px;
            }

            .achievement-modal-card {
                padding: 30px 20px 24px;
            }

            .contact h2 {
                font-size: 2rem;
            }

            .contact-methods {
                grid-template-columns: 1fr;
                gap: 12px;
                margin-bottom: 30px;
            }

            #contact.contact .contact-methods {
                grid-template-columns: 1fr !important;
                gap: 12px !important;
                margin-bottom: 30px !important;
            }

            .contact-card {
                min-height: 96px;
                flex-direction: row;
                justify-content: flex-start;
                text-align: left;
                padding: 16px;
            }

            #contact.contact a.contact-card {
                min-height: 96px !important;
                flex-direction: row !important;
                justify-content: flex-start !important;
                text-align: left !important;
                padding: 16px !important;
            }

            .contact-card-text {
                align-items: flex-start;
            }

            #contact.contact .contact-card-text {
                align-items: flex-start !important;
            }

            .contact-form-panel {
                padding: 20px;
            }

            .intro-loader {
                padding: 18px;
            }

            .intro-card {
                min-height: 240px;
                padding: 22px 16px;
                border-radius: 20px;
            }

            .intro-photo-wrap {
                width: 96px;
                height: 96px;
            }

            .intro-card-copy p {
                font-size: 0.72rem;
                letter-spacing: 0.18em;
            }

            .intro-title {
                letter-spacing: 0.1em;
            }

            .hero {
                padding: 72px 16px 56px;
            }

            .hero-title {
                font-size: clamp(2rem, 12vw, 3rem);
            }

            .hero-subtitle {
                font-size: 0.96rem;
            }

            .hero-description {
                font-size: 0.98rem;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero .btn {
                width: 100%;
                max-width: 290px;
                margin: 0 auto;
            }

            .hero-socials a {
                flex: 1 1 120px;
            }

            .logo {
                max-width: 190px;
                overflow: hidden;
                text-overflow: ellipsis;
            }

            .site-nav {
                left: 10px;
                right: 10px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            .hero-title,
            .hero-subtitle,
            .hero-description,
            .hero-actions,
            .hero-socials,
            .hero-image {
                opacity: 1;
                animation: none;
                transform: none;
            }

            .reveal,
            .reveal-up,
            .reveal-left,
            .reveal-right {
                opacity: 1;
                transform: none;
                transition: none;
            }

            .intro-loader,
            .intro-card,
            .intro-title,
            .intro-name,
            .intro-hide {
                animation: none;
            }

            .door-panel {
                transition: none;
            }

            .flip-card-inner {
                transition: none;
            }

            .flip-card-hint {
                animation: none;
                transition: none;
                opacity: 1;
                transform: none;
            }

            .flip-card-hint-arrow {
                transition: none;
                transform: none;
            }

            .achievement-card,
            .achievement-icon,
            .achievement-modal,
            .achievement-modal-card,
            .achievement-modal-close,
            .contact-toast {
                transition: none;
            }

            .intro-card,
            .intro-title,
            .intro-name {
                opacity: 1;
                transform: none;
            }
        }