/* roulang page: index */
:root {
            --bg-primary: #0A0E1A;
            --bg-secondary: #121C2E;
            --glass-border: rgba(255, 255, 255, 0.10);
            --glass-bg: rgba(255, 255, 255, 0.05);
            --accent: #22D3EE;
            --text-primary: rgba(255, 255, 255, 0.92);
            --text-secondary: rgba(255, 255, 255, 0.65);
            --text-tertiary: rgba(255, 255, 255, 0.45);
            --text-quaternary: rgba(255, 255, 255, 0.40);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Inter", sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all .25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container-global {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        @media(min-width:768px) {
            .container-global {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }
        @media(min-width:1024px) {
            .container-global {
                padding-left: 4rem;
                padding-right: 4rem;
            }
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 1rem;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
            transition: all .3s ease;
        }
        .glass-card:hover {
            border-color: rgba(34, 211, 238, 0.3);
            transform: translateY(-2px);
            box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.7), 0 0 20px rgba(34, 211, 238, 0.08);
        }
        .scrollbar-hide {
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .scrollbar-hide::-webkit-scrollbar {
            display: none;
        }
        @keyframes glowPulse {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(34, 211, 238, 0.35), 0 0 40px rgba(34, 211, 238, 0.10);
            }
            50% {
                box-shadow: 0 0 35px rgba(34, 211, 238, 0.60), 0 0 60px rgba(34, 211, 238, 0.20);
            }
        }
        .glow-pulse {
            animation: glowPulse 2.5s ease-in-out infinite;
        }
        @keyframes floatParticle {
            0%,
            100% {
                transform: translateY(0) scale(1);
                opacity: .25;
            }
            50% {
                transform: translateY(-18px) scale(1.1);
                opacity: .55;
            }
        }
        .particle {
            position: absolute;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.35);
            animation: floatParticle 5s ease-in-out infinite;
            pointer-events: none;
        }
        .nav-scrolled {
            background: rgba(10, 14, 26, 0.85) !important;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
        }
        .nav-link {
            position: relative;
            color: rgba(255, 255, 255, 0.65);
            font-size: .875rem;
            letter-spacing: .04em;
            padding: .5rem .25rem;
            transition: color .25s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.6);
            transition: width .3s ease;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link:hover::after {
            width: 20px;
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            width: 20px;
            background: var(--accent);
            box-shadow: 0 0 10px rgba(34, 211, 238, 0.7);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: linear-gradient(135deg, #22D3EE, #3B82F6);
            color: #0A0E1A;
            font-weight: 700;
            border-radius: 9999px;
            padding: .875rem 2rem;
            font-size: .9375rem;
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.35);
            transition: all .3s ease;
            border: none;
            cursor: pointer;
            letter-spacing: .02em;
        }
        .btn-primary:hover {
            box-shadow: 0 0 35px rgba(34, 211, 238, 0.55), 0 10px 30px -10px rgba(34, 211, 238, 0.4);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(1px) scale(.98);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            color: #fff;
            font-weight: 500;
            border-radius: 9999px;
            padding: .875rem 2rem;
            font-size: .9375rem;
            transition: all .3s ease;
            cursor: pointer;
            letter-spacing: .02em;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(1px);
        }
        .section-title {
            font-size: 1.875rem;
            line-height: 1.2;
            font-weight: 700;
            letter-spacing: -0.02em;
            position: relative;
            padding-left: 1rem;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 70%;
            border-radius: 4px;
            background: linear-gradient(to bottom, #22D3EE, #3B82F6);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 9999px;
            padding: .25rem .875rem;
            font-size: .75rem;
            color: var(--text-secondary);
            letter-spacing: .03em;
        }
        .badge-cyan {
            background: rgba(34, 211, 238, 0.10);
            border-color: rgba(34, 211, 238, 0.25);
            color: #22D3EE;
        }
        .badge-orange {
            background: rgba(245, 158, 11, 0.10);
            border-color: rgba(245, 158, 11, 0.25);
            color: #F59E0B;
        }
        .card-img-wrap {
            overflow: hidden;
            border-radius: inherit;
        }
        .card-img-wrap img {
            transition: transform .6s ease;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .card-img-wrap:hover img {
            transform: scale(1.05);
        }
        .data-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 1rem;
            padding: 1.75rem 1.5rem;
            text-align: center;
            transition: all .3s ease;
            backdrop-filter: blur(10px);
        }
        .data-card:hover {
            border-color: rgba(34, 211, 238, 0.3);
            background: rgba(255, 255, 255, 0.06);
        }
        .data-value {
            font-size: 2.25rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #fff;
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .data-label {
            font-size: .875rem;
            color: var(--text-secondary);
            margin-top: .5rem;
        }
        .footer-link {
            color: rgba(255, 255, 255, 0.55);
            font-size: .875rem;
            transition: color .2s ease;
            display: block;
            padding: .3rem 0;
        }
        .footer-link:hover {
            color: #22D3EE;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 1rem;
            padding: 1.25rem 1.5rem;
            transition: all .35s ease;
            cursor: pointer;
        }
        .faq-item.active {
            background: rgba(34, 211, 238, 0.06);
            border-color: rgba(34, 211, 238, 0.25);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.06);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .3s ease;
            color: var(--text-secondary);
            font-size: .9375rem;
            line-height: 1.75;
        }
        .faq-item.active .faq-answer {
            padding-top: .875rem;
        }
        .faq-icon {
            transition: transform .35s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .search-input {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: 9999px;
            padding: .5rem 1.25rem;
            color: #fff;
            font-size: .875rem;
            outline: none;
            width: 0;
            opacity: 0;
            transition: all .4s ease;
            pointer-events: none;
        }
        .search-input.open {
            width: 200px;
            opacity: 1;
            pointer-events: auto;
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.15);
        }
        .hero-gradient {
            background: linear-gradient(to right, rgba(10, 14, 26, 0.95), rgba(10, 14, 26, 0.75) 40%, rgba(10, 14, 26, 0.3) 70%, transparent 100%);
        }
        .hero-gradient-bottom {
            background: linear-gradient(to top, #0A0E1A 2%, transparent 60%);
        }
        .cta-glow {
            background: radial-gradient(ellipse at center, rgba(34, 211, 238, 0.12) 0%, transparent 65%);
        }
        .timeline-item {
            position: relative;
            padding-left: 1.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 2px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22D3EE;
            box-shadow: 0 0 10px rgba(34, 211, 238, 0.6);
        }
        .timeline-item::after {
            content: '';
            position: absolute;
            left: 3px;
            top: 16px;
            bottom: 0;
            width: 1px;
            background: rgba(255, 255, 255, 0.08);
        }
        input:focus-visible,
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid rgba(34, 211, 238, 0.5);
            outline-offset: 2px;
        }
        .section-spacing {
            padding: 4rem 0;
        }
        @media(min-width:768px) {
            .section-spacing {
                padding: 5.5rem 0;
            }
        }

/* roulang page: category1 */
:root {
            --bg: #0A0E1A;
            --bg2: #111827;
            --card: rgba(255, 255, 255, .05);
            --bd: rgba(255, 255, 255, .1);
            --cyan: #22D3EE;
            --txt: rgba(255, 255, 255, .92);
            --txt2: rgba(255, 255, 255, .65);
            --txt3: rgba(255, 255, 255, .45);
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            background: var(--bg);
            color: var(--txt);
            line-height: 1.7;
        }
        .container-global {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (min-width:768px) { .container-global { padding: 0 2.5rem } }
        @media (min-width:1024px) { .container-global { padding: 0 4rem } }
        .scrollbar-hide {
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .scrollbar-hide::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            position: relative;
            color: rgba(255, 255, 255, .65);
            font-size: 14px;
            transition: color .3s;
            letter-spacing: .02em;
        }
        .nav-link:hover {
            color: rgba(255, 255, 255, 1);
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: -6px;
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--cyan);
            box-shadow: 0 0 12px rgba(34, 211, 238, .6);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #22D3EE, #3B82F6);
            color: #0A0E1A;
            font-weight: 700;
            border-radius: 9999px;
            padding: .75rem 1.75rem;
            transition: all .3s;
            box-shadow: 0 0 20px rgba(34, 211, 238, .35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(34, 211, 238, .55);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, .15);
            background: rgba(255, 255, 255, .05);
            backdrop-filter: blur(12px);
            color: #fff;
            border-radius: 9999px;
            padding: .75rem 1.75rem;
            transition: all .3s;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(34, 211, 238, .3);
        }
        .search-input {
            width: 0;
            opacity: 0;
            padding: 0;
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 9999px;
            background: rgba(255, 255, 255, .05);
            color: #fff;
            font-size: 14px;
            transition: all .4s;
            outline: none;
        }
        .search-input.open {
            width: 180px;
            opacity: 1;
            padding: .45rem 1rem .45rem .9rem;
        }
        .search-input:focus {
            border-color: rgba(34, 211, 238, .4);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, .15);
        }
        .footer-link {
            display: block;
            color: rgba(255, 255, 255, .45);
            font-size: 14px;
            padding: 5px 0;
            transition: color .3s;
        }
        .footer-link:hover {
            color: var(--cyan);
        }
        .glass-card {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 1rem;
            backdrop-filter: blur(20px);
            transition: all .3s;
        }
        .glass-card:hover {
            border-color: rgba(34, 211, 238, .3);
            transform: translateY(-4px);
            box-shadow: 0 20px 40px -20px rgba(34, 211, 238, .25);
        }
        .faq-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows .35s ease;
        }
        .faq-item.open .faq-answer {
            grid-template-rows: 1fr;
        }
        .faq-answer-inner {
            overflow: hidden;
        }
        @keyframes glowPulse {
            0%,
            100% { box-shadow: 0 0 20px rgba(34, 211, 238, .35); }
            50% { box-shadow: 0 0 32px rgba(34, 211, 238, .6); }
        }
        .glow-pulse {
            animation: glowPulse 3s ease-in-out infinite;
        }
        .bg-cover-fallback {
            background-color: #121C2E;
            background-size: cover;
            background-position: center;
        }

/* roulang page: article */
:root {
            --bg-primary: #0A0E1A;
            --bg-secondary: #121C2E;
            --accent: #22D3EE;
            --accent-secondary: #34D399;
            --text-main: rgba(255,255,255,0.92);
            --text-sub: rgba(255,255,255,0.65);
            --text-weak: rgba(255,255,255,0.45);
            --glass-bg: rgba(255,255,255,0.05);
            --glass-border: rgba(255,255,255,0.10);
            --line: rgba(255,255,255,0.08);
            --hot: #F59E0B;
        }
        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            background: var(--bg-primary);
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Inter", sans-serif;
            line-height: 1.6;
            color: var(--text-main);
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; }
        a { text-decoration: none; color: inherit; }
        button { cursor: pointer; font-family: inherit; }
        input { font-family: inherit; }

        .container-global { max-width: 1280px; margin: 0 auto; padding: 0 1.5rem; }
        @media (min-width: 768px) { .container-global { padding: 0 2.5rem; } }
        @media (min-width: 1280px) { .container-global { padding: 0 4rem; } }

        .h-18 { height: 4.5rem; }

        #siteHeader.scrolled {
            background: rgba(10,14,26,0.8);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--line);
        }

        .nav-link {
            position: relative;
            font-size: 0.875rem;
            letter-spacing: 0.02em;
            color: var(--text-sub);
            padding: 0.25rem 0;
            transition: color 0.3s;
            white-space: nowrap;
        }
        .nav-link:hover { color: #fff; }
        .nav-link.active { color: #fff; }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            box-shadow: 0 0 10px rgba(34,211,238,0.6);
            border-radius: 2px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(90deg, #22D3EE, #3B82F6);
            color: #0A0E1A;
            font-weight: 700;
            border-radius: 9999px;
            padding: 0.75rem 1.75rem;
            transition: all 0.3s;
            box-shadow: 0 0 15px rgba(34,211,238,0.2);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 30px rgba(34,211,238,0.4); }
        .btn-primary:active { transform: translateY(0); box-shadow: 0 0 12px rgba(34,211,238,0.3); }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            border: 1px solid rgba(255,255,255,0.15);
            background: rgba(255,255,255,0.05);
            backdrop-filter: blur(8px);
            color: #fff;
            border-radius: 9999px;
            padding: 0.75rem 1.75rem;
            transition: all 0.3s;
        }
        .btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.25); }

        .search-input {
            width: 0;
            opacity: 0;
            transition: all 0.4s ease;
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 9999px;
            padding: 0.4rem 0.8rem;
            font-size: 0.8rem;
            color: #fff;
            outline: none;
        }
        .search-input.open { width: 170px; opacity: 1; margin-left: 0.5rem; }
        .search-input:focus { border-color: rgba(34,211,238,0.4); box-shadow: 0 0 0 3px rgba(34,211,238,0.15); }

        .footer-link {
            display: block;
            color: rgba(255,255,255,0.45);
            font-size: 0.875rem;
            margin-bottom: 0.6rem;
            transition: color 0.3s;
        }
        .footer-link:hover { color: var(--accent); }

        .glass-card {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.10);
            backdrop-filter: blur(14px);
        }

        .article-content { font-size: 16px; line-height: 1.9; color: rgba(255,255,255,0.78); }
        .article-content p { margin-bottom: 1.25rem; }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 2rem 0 1rem;
            color: rgba(255,255,255,0.95);
            padding-top: 0.25rem;
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 1.5rem 0 0.75rem;
            color: rgba(255,255,255,0.9);
        }
        .article-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin: 1.25rem 0 0.5rem;
            color: rgba(255,255,255,0.85);
        }
        .article-content img {
            border-radius: 1rem;
            border: 1px solid rgba(255,255,255,0.08);
            margin: 1.5rem 0;
            height: auto;
            max-width: 100%;
        }
        .article-content blockquote {
            background: rgba(34,211,238,0.03);
            border-left: 3px solid var(--accent);
            padding: 1rem 1.25rem;
            margin: 1.5rem 0;
            border-radius: 0 0.75rem 0.75rem 0;
            color: rgba(255,255,255,0.7);
            font-style: italic;
        }
        .article-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
        .article-content ul, .article-content ol {
            margin: 1rem 0 1.5rem;
            padding-left: 1.5rem;
            color: rgba(255,255,255,0.75);
        }
        .article-content li { margin-bottom: 0.5rem; }
        .article-content li::marker { color: var(--accent); }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.9rem;
        }
        .article-content th, .article-content td {
            border: 1px solid var(--line);
            padding: 0.6rem 0.9rem;
            text-align: left;
        }
        .article-content th { background: rgba(255,255,255,0.04); color: rgba(255,255,255,0.85); }
        .article-content pre {
            background: rgba(0,0,0,0.35);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: 0.75rem;
            padding: 1rem;
            overflow-x: auto;
            margin: 1.5rem 0;
            font-size: 0.875rem;
            color: rgba(255,255,255,0.8);
        }
        .article-content code { font-family: "SFMono-Regular", Consolas, "Courier New", monospace; }

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: min(320px, 85vw);
            height: 100vh;
            background: rgba(10,14,26,0.96);
            backdrop-filter: blur(20px);
            z-index: 100;
            transition: right 0.45s cubic-bezier(0.22, 1, 0.36, 1);
            padding: 2rem 1.75rem;
            border-left: 1px solid rgba(255,255,255,0.08);
        }
        .mobile-drawer.open { right: 0; }

        .scrollbar-hide { scrollbar-width: none; -ms-overflow-style: none; }
        .scrollbar-hide::-webkit-scrollbar { display: none; }

        @keyframes glowPulse {
            0%, 100% { box-shadow: 0 0 12px rgba(34,211,238,0.25); }
            50% { box-shadow: 0 0 32px rgba(34,211,238,0.55); }
        }
        .glow-animation { animation: glowPulse 3s ease-in-out infinite; }

        @keyframes floatY {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        .float-slow { animation: floatY 6s ease-in-out infinite; }

        .toc-link {
            display: block;
            padding: 0.4rem 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            transition: color 0.3s, padding-left 0.3s;
            border-left: 2px solid transparent;
        }
        .toc-link:hover { color: var(--accent); padding-left: 0.5rem; border-left-color: rgba(34,211,238,0.4); }

/* roulang page: category2 */
:root {
            --bg-primary: #0A0E1A;
            --bg-secondary: #111827;
            --accent: #22D3EE;
            --accent-blue: #3B82F6;
            --glass-bg: rgba(255,255,255,0.05);
            --glass-border: rgba(255,255,255,0.10);
        }
        body { background: var(--bg-primary); font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif; color: rgba(255,255,255,0.92); }
        .container-global { max-width: 1280px; margin: 0 auto; padding-left: 1.5rem; padding-right: 1.5rem; }
        .nav-link { position: relative; color: rgba(255,255,255,0.65); transition: color .3s ease, text-shadow .3s ease; }
        .nav-link:hover { color: rgba(255,255,255,1); }
        .nav-link.active { color: #fff; }
        .nav-link.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 20px; height: 2px; background: var(--accent); box-shadow: 0 0 12px rgba(34,211,238,0.6); border-radius: 9999px; }
        .btn-primary { background: linear-gradient(90deg, var(--accent), var(--accent-blue)); color: rgba(15,23,42,0.95); font-weight: 700; border-radius: 9999px; padding: 0.75rem 1.75rem; transition: all .3s ease; display: inline-flex; align-items: center; justify-content: center; }
        .btn-primary:hover { box-shadow: 0 0 24px rgba(34,211,238,0.4); transform: translateY(-2px); }
        .btn-primary:active { transform: translateY(0); }
        .btn-ghost { border: 1px solid rgba(255,255,255,0.15); background: rgba(255,255,255,0.05); backdrop-filter: blur(10px); color: #fff; border-radius: 9999px; padding: 0.75rem 1.75rem; transition: all .3s ease; display: inline-flex; align-items: center; justify-content: center; }
        .btn-ghost:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.25); }
        .glass-card { background: var(--glass-bg); border: 1px solid var(--glass-border); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-radius: 1rem; box-shadow: 0 20px 50px -20px rgba(0,0,0,0.6); transition: all .4s ease; }
        .glass-card:hover { border-color: rgba(34,211,238,0.3); box-shadow: 0 25px 60px -20px rgba(0,0,0,0.7), 0 0 20px rgba(34,211,238,0.08); }
        .search-input { width: 0; opacity: 0; transition: all .4s ease; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.1); border-radius: 9999px; padding: 0.4rem 0.9rem; font-size: 0.875rem; color: #fff; outline: none; }
        .search-input.active { width: 180px; opacity: 1; margin-left: 0.5rem; }
        .search-input:focus { border-color: rgba(34,211,238,0.4); box-shadow: 0 0 0 3px rgba(34,211,238,0.15); }
        .footer-link { display: block; color: rgba(255,255,255,0.45); font-size: 0.875rem; padding: 0.35rem 0; transition: color .2s ease, padding-left .2s ease; }
        .footer-link:hover { color: rgba(34,211,238,0.85); padding-left: 4px; }
        .scrollbar-hide::-webkit-scrollbar { display: none; }
        .scrollbar-hide { -ms-overflow-style: none; scrollbar-width: none; }
        @keyframes glowPulse { 0%, 100% { box-shadow: 0 0 16px rgba(34,211,238,0.3); } 50% { box-shadow: 0 0 32px rgba(34,211,238,0.6); } }
        .glow-animation { animation: glowPulse 2.8s ease-in-out infinite; }
        @keyframes floatParticle { 0% { transform: translateY(0) translateX(0); opacity: .2; } 50% { transform: translateY(-18px) translateX(6px); opacity: .6; } 100% { transform: translateY(0) translateX(0); opacity: .2; } }
        .particle { position: absolute; border-radius: 9999px; background: rgba(34,211,238,0.5); filter: blur(1px); pointer-events: none; }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
        .faq-item.active .faq-answer { max-height: 400px; }
        .faq-item.active { border-color: rgba(34,211,238,0.25); background: rgba(34,211,238,0.06); }
        .faq-icon { transition: transform .3s ease; }
        .faq-item.active .faq-icon { transform: rotate(45deg); color: var(--accent); }
        .section-title-bar { width: 4px; height: 22px; border-radius: 9999px; background: linear-gradient(180deg, var(--accent), var(--accent-blue)); box-shadow: 0 0 12px rgba(34,211,238,0.4); }
        .card-arrow { transition: transform .3s ease; }
        .card-link:hover .card-arrow { transform: translateX(4px); }
        @media (max-width: 768px) { .search-input.active { width: 120px; } }