/* --- style.css --- */

/* =========================================== */
/* --- 1. Base Styles & Variables --- */
/* =========================================== */
:root {
    /* Color Palette */
    --primary-blue: #3498db; /* Base blue */
    --primary-blue-dark: #2980b9;
    --tech-blue: #3A6FF8; /* Tech blue accent */
    --tech-blue-hover: #2563EB;
    --neon-blue: #60A5FA; /* Neon accent for dark mode/hover */
    --deep-space-blue: #1A233D; /* Dark background */
    --dark-mode-bg: #0F172A; /* Very dark bg */
    --purple-gradient-start: #6C5CE7;
    --purple-gradient-end: #8B5CF6;
    --orange-accent: #FF6B35; /* CTA accent */
    --orange-accent-dark: #f05a28;

    /* Neutral Tones */
    --background-light: #ffffff;
    --background-grey: #f8f9fa; /* Light grey bg */
    --background-grey-alt: #F5F7FA; /* Slightly different light grey */
    --text-dark: #2D3748; /* Dark grey text */
    --text-grey: #6c757d; /* Medium grey */
    --text-muted: #A0AEC0; /* Light grey */
    --text-dark-mode: #E5E7EB; /* Light text for dark mode */
    --text-dark-mode-secondary: #94a3b8;

    /* Borders & Shadows */
    --border-color: #dee2e6; /* Light border */
    --border-color-dark: #334155; /* Dark border */
    --card-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    --card-hover-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
    --dark-shadow: rgba(0, 0, 0, 0.2);

    /* Fonts */
    --font-primary: 'Inter', 'Noto Sans SC', sans-serif; /* UI, Headings */
    --font-secondary: 'Noto Sans SC', sans-serif; /* Chinese UI */
    --font-serif-cn: 'Noto Serif SC', serif; /* Chinese Serif Body */
    --font-code: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;

    /* Layout */
    --header-height: 70px;
    --container-max-width: 1140px;

    /* RGB versions for RGBA usage */
    --primary-blue-rgb: 52, 152, 219;
    --tech-blue-rgb: 58, 111, 248;
    --neon-blue-rgb: 96, 165, 250;
}

/* --- CSS Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-primary); background-color: var(--background-light); color: var(--text-dark); line-height: 1.7; overflow-x: hidden; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
img, picture, video, canvas, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; }
a { color: var(--primary-blue); text-decoration: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-primary); line-height: 1.3; }

/* =========================================== */
/* --- 2. Utility Classes --- */
/* =========================================== */
.container { max-width: var(--container-max-width); margin: 0 auto; padding: 0 15px; }
.section-padding { padding: 80px 0; }
.bg-light { background-color: var(--background-grey); }
.text-center { text-align: center; }
.section-title { font-size: 2.2rem; font-weight: 700; color: var(--text-dark); margin-bottom: 60px; text-align: center; }
.section-subtitle { font-size: 1.1rem; color: var(--text-grey); max-width: 700px; margin: -40px auto 60px auto; text-align: center; line-height: 1.6; }

/* =========================================== */
/* --- 3. Buttons --- */
/* =========================================== */
.btn { display: inline-block; padding: 12px 28px; border-radius: 6px; text-decoration: none; font-weight: 600; transition: all 0.3s ease; cursor: pointer; border: 1px solid transparent; font-size: 1rem; text-align: center; line-height: 1.5; white-space: nowrap; }
.btn-primary { background-color: var(--tech-blue); color: var(--background-light); border-color: var(--tech-blue); }
.btn-primary:hover { background-color: var(--tech-blue-hover); border-color: var(--tech-blue-hover); transform: translateY(-2px); box-shadow: 0 4px 10px rgba(var(--tech-blue-rgb), 0.3); }
.btn-secondary { background-color: var(--background-light); color: var(--tech-blue); border-color: var(--border-color); }
.btn-secondary:hover { background-color: var(--background-grey); border-color: #adb5bd; transform: translateY(-2px); }
.btn-outline { background-color: transparent; color: var(--tech-blue); border-color: var(--tech-blue); }
.btn-outline:hover { background-color: var(--tech-blue); color: var(--background-light); transform: translateY(-2px); }
.btn-accent { background-color: var(--orange-accent); color: var(--background-light); border-color: var(--orange-accent); }
.btn-accent:hover { background-color: var(--orange-accent-dark); border-color: var(--orange-accent-dark); transform: translateY(-2px); box-shadow: 0 4px 10px rgba(255, 107, 53, 0.4); }
.btn-large { padding: 15px 35px; font-size: 1.1rem; }

/* =========================================== */
/* --- 4. Header & Navigation --- */
/* =========================================== */
#main-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background-color: rgba(255, 255, 255, 0.9); height: var(--header-height); box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05); transition: box-shadow 0.3s ease, background-color 0.3s ease; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
#main-header.scrolled { box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1); background-color: rgba(255, 255, 255, 0.95); }
body[data-theme="dark"] #main-header { background-color: rgba(15, 23, 42, 0.85); box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2); border-bottom: 1px solid var(--border-color-dark, #334155); }
body[data-theme="dark"] #main-header.scrolled { background-color: rgba(15, 23, 42, 0.95); box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3); }
.header-container { display: flex; justify-content: space-between; align-items: center; height: 100%; }
.logo { display: flex; align-items: center; text-decoration: none; color: var(--tech-blue); font-weight: 700; font-size: 1.5rem; transition: color 0.3s ease; }
.logo-icon { margin-right: 8px; font-size: 1.8rem; line-height: 1; }
.logo-text { font-family: var(--font-secondary), sans-serif; }
body[data-theme="dark"] .logo { color: var(--neon-blue); }
.main-nav { display: block; }
.nav-links { list-style: none; display: flex; gap: 35px; }
.nav-link { color: var(--text-grey); text-decoration: none; font-size: 1rem; font-weight: 500; padding: 5px 0; position: relative; transition: color 0.3s ease; }
.nav-link::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background-color: var(--tech-blue); transition: width 0.3s ease; }
.nav-link:hover, .nav-link.active { color: var(--text-dark); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
body[data-theme="dark"] .nav-link { color: var(--text-dark-mode-secondary); }
body[data-theme="dark"] .nav-link:hover, body[data-theme="dark"] .nav-link.active { color: var(--text-dark-mode); }
body[data-theme="dark"] .nav-link::after { background-color: var(--neon-blue); }
#mobile-menu-toggle { display: none; background: none; border: none; color: var(--text-dark); font-size: 1.6rem; cursor: pointer; }
body[data-theme="dark"] #mobile-menu-toggle { color: var(--text-dark-mode); }
#mobile-menu { display: none; position: fixed; top: var(--header-height); left: 0; width: 100%; background-color: var(--background-light); z-index: 999; padding: 20px 0; box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1); border-top: 1px solid var(--border-color); max-height: calc(100vh - var(--header-height)); overflow-y: auto; }
#mobile-menu.open { display: block; }
.mobile-nav-links { list-style: none; text-align: center; }
.mobile-nav-links li { margin-bottom: 10px; }
.mobile-nav-links .nav-link { display: block; padding: 12px; font-size: 1.1rem; color: var(--text-dark); }
.mobile-nav-links .nav-link:hover, .mobile-nav-links .nav-link.active { background-color: var(--background-grey); color: var(--tech-blue); }
.mobile-nav-links .nav-link::after { display: none; }
body[data-theme="dark"] #mobile-menu { background-color: var(--dark-mode-bg); border-top-color: var(--border-color-dark); box-shadow: 0 5px 10px rgba(0, 0, 0, 0.3); }
body[data-theme="dark"] .mobile-nav-links .nav-link { color: var(--text-dark-mode); }
body[data-theme="dark"] .mobile-nav-links .nav-link:hover, body[data-theme="dark"] .mobile-nav-links .nav-link.active { background-color: rgba(var(--neon-blue-rgb), 0.1); color: var(--neon-blue); }
/* Added for JS scroll lock */
body.mobile-menu-active { overflow: hidden; }

/* =========================================== */
/* --- 5. Footer --- */
/* =========================================== */
#main-footer { background-color: #2c3e50; color: #bdc3c7; padding-top: 70px; margin-top: 80px; }
.footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 40px; margin-bottom: 50px; }
.footer-column h4 { color: var(--background-light); font-size: 1.1rem; font-weight: 600; margin-bottom: 25px; position: relative; padding-bottom: 10px; }
.footer-column h4::after { content: ''; position: absolute; bottom: 0; left: 0; width: 40px; height: 2px; background-color: var(--tech-blue); }
.footer-column p { font-size: 0.95rem; line-height: 1.6; margin-bottom: 15px; }
.footer-column ul { list-style: none; }
.footer-column ul li { margin-bottom: 12px; }
.footer-column ul a { color: #bdc3c7; text-decoration: none; font-size: 0.95rem; transition: color 0.3s ease, padding-left 0.3s ease; }
.footer-column ul a:hover { color: var(--tech-blue); padding-left: 5px; }
.contact-info p { margin-bottom: 10px; display: flex; align-items: center; gap: 10px; font-size: 0.95rem; }
.contact-info i { color: var(--tech-blue); width: 16px; text-align: center; }
.social-links { display: flex; gap: 18px; flex-wrap: wrap; }
.social-links a { color: #bdc3c7; font-size: 1.6rem; transition: color 0.3s ease, transform 0.3s ease; }
.social-links a:hover { color: var(--tech-blue); transform: translateY(-2px); }
.copyright { text-align: center; padding: 25px 15px; border-top: 1px solid #34495e; font-size: 0.9rem; color: #95a5a6; }
body[data-theme="dark"] #main-footer { background-color: #111827; }
body[data-theme="dark"] .copyright { border-top-color: #1f2937; }

/* =========================================== */
/* --- 6. Index Page Specific Styles --- */
/* =========================================== */
.hero-section { padding-top: var(--header-height); background-color: var(--background-grey); min-height: 65vh; display: flex; align-items: center; position: relative; overflow: hidden; }
.carousel-container { width: 100%; height: 100%; position: relative; }
.carousel-slide { width: 100%; min-height: calc(65vh - var(--header-height)); display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity 0.6s ease-in-out; position: absolute; top: 0; left: 0; background-color: var(--background-grey); }
.carousel-slide.active { opacity: 1; z-index: 1; position: relative; }
.slide-content { text-align: center; position: relative; z-index: 2; color: var(--text-dark); padding: 40px 0; }
.slide-content h1 { font-size: 2.8rem; font-weight: 700; margin-bottom: 20px; line-height: 1.3; }
.slide-content p { font-size: 1.2rem; color: var(--text-grey); margin-bottom: 40px; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-buttons .btn { margin: 0 10px; }
.slide-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.1; z-index: 0; pointer-events: none; }
.intro-section {}
.features-section .features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.features-section .feature-item { background-color: var(--background-light); padding: 35px 30px; border-radius: 8px; text-align: center; border: 1px solid var(--border-color); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.features-section .feature-item:hover { transform: translateY(-5px); box-shadow: var(--card-hover-shadow); }
.features-section .feature-icon { color: var(--tech-blue); margin-bottom: 20px; font-size: 1.8rem; display: inline-block; }
.features-section .feature-item h3 { font-size: 1.3rem; font-weight: 600; margin-bottom: 10px; color: var(--text-dark); }
.features-section .feature-item p { color: var(--text-grey); font-size: 0.95rem; line-height: 1.6; }
.resources-section .resources-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.resources-section .resource-card { background-color: var(--background-light); border-radius: 8px; overflow: hidden; box-shadow: var(--card-shadow); transition: transform 0.3s ease, box-shadow 0.3s ease; display: flex; flex-direction: column; border: 1px solid var(--border-color); }
.resources-section .resource-card:hover { transform: translateY(-5px); box-shadow: var(--card-hover-shadow); }
.resources-section .card-image { width: 100%; height: 200px; object-fit: cover; display: block; border-bottom: 1px solid var(--border-color); }
.resources-section .card-content { padding: 25px; flex-grow: 1; display: flex; flex-direction: column; }
.resources-section .card-category { display: inline-block; align-self: flex-start; background-color: rgba(var(--tech-blue-rgb), 0.1); color: var(--tech-blue); padding: 4px 10px; border-radius: 4px; font-size: 0.8rem; font-weight: 600; margin-bottom: 12px; text-transform: uppercase; }
.resources-section .card-title { font-size: 1.15rem; font-weight: 600; color: var(--text-dark); margin-bottom: 15px; line-height: 1.4; flex-grow: 1; }
.resources-section .card-link { color: var(--tech-blue); text-decoration: none; font-weight: 600; font-size: 0.9rem; transition: color 0.3s ease; align-self: flex-start; display: inline-flex; align-items: center; gap: 5px; }
.resources-section .card-link:hover { color: var(--tech-blue-hover); }
.resources-section .card-link i { transition: transform 0.3s ease; }
.resources-section .card-link:hover i { transform: translateX(3px); }
.pricing-section .pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; align-items: stretch; }
.pricing-section .pricing-card { background-color: var(--background-light); padding: 40px 70px; border-radius: 8px; border: 1px solid var(--border-color); display: flex; flex-direction: column; text-align: center; transition: transform 0.3s ease, box-shadow 0.3s ease; position: relative; }
.pricing-section .pricing-card:hover { transform: translateY(-5px); box-shadow: var(--card-hover-shadow); }
.pricing-section .pricing-card.recommended { border: 2px solid var(--tech-blue); box-shadow: 0 0 20px rgba(var(--tech-blue-rgb), 0.2); }
.pricing-section .badge { position: absolute; top: 15px; right: 15px; background-color: var(--tech-blue); color: var(--background-light); font-size: 0.8rem; font-weight: 600; padding: 4px 10px; border-radius: 4px; }
.pricing-section .plan-name { font-size: 1.4rem; font-weight: 600; margin-bottom: 10px; color: var(--text-dark); }
.pricing-section .plan-price { font-size: 2.5rem; font-weight: 700; margin-bottom: 5px; color: var(--tech-blue); }
.pricing-section .plan-price .plan-period { font-size: 1rem; font-weight: 400; color: var(--text-grey); margin-left: 3px; }
.pricing-section .plan-description { font-size: 0.95rem; color: var(--text-grey); margin-bottom: 30px; min-height: 40px; line-height: 1.5; }
.pricing-section .plan-features { list-style: none; margin-bottom: 35px; text-align: left; padding-left: 10px; flex-grow: 1; }
.pricing-section .plan-features li { margin-bottom: 12px; color: var(--text-dark); display: flex; align-items: center; gap: 10px; font-size: 0.95rem; }
.pricing-section .plan-features i.fa-check { color: #28a745; font-size: 1.1rem; }
.pricing-section .plan-features i.fa-times { color: var(--text-grey); font-size: 1.1rem; }
.pricing-section .pricing-card .btn { margin-top: auto; width: 100%; }
.download-section { background-color: var(--tech-blue); color: var(--background-light); }
.download-section h2 { color: var(--background-light); font-size: 2rem; margin-bottom: 15px; }
.download-section p { color: rgba(255, 255, 255, 0.9); font-size: 1.1rem; margin-bottom: 40px; max-width: 600px; margin-left: auto; margin-right: auto; }
.download-button { margin: 10px 15px; min-width: 240px; }
.download-button i { margin-right: 8px; }
.download-section .btn-primary { background-color: var(--background-light); color: var(--tech-blue); border-color: var(--background-light); }
.download-section .btn-primary:hover { background-color: #f1f1f1; border-color: #f1f1f1; box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); color: var(--tech-blue-hover); }
.download-section .btn-secondary { background-color: transparent; color: var(--background-light); border-color: var(--background-light); }
.download-section .btn-secondary:hover { background-color: rgba(255, 255, 255, 0.1); border-color: var(--background-light); }
.feedback-message { margin-top: 25px; font-weight: 500; font-size: 0.95rem; min-height: 1.5em; }

/* =========================================== */
/* --- 7. Features Page Specific Styles --- */
/* =========================================== */
.breadcrumbs-container { background-color: var(--background-grey); padding: 15px 0; border-bottom: 1px solid var(--border-color); }
body[data-theme="dark"] .breadcrumbs-container { background-color: rgba(var(--neon-blue-rgb), 0.05); border-bottom-color: var(--border-color-dark);}
.breadcrumbs { list-style: none; display: flex; gap: 8px; font-size: 0.9rem; padding: 0; margin: 0; }
.breadcrumbs li { display: flex; align-items: center; color: var(--text-grey); }
.breadcrumbs li:not(:last-child)::after { content: '/'; margin-left: 8px; color: var(--text-grey); }
.breadcrumbs a { color: var(--tech-blue); text-decoration: none; transition: color 0.3s ease; }
.breadcrumbs a:hover { color: var(--tech-blue-hover); }
.breadcrumbs li[aria-current="page"] { font-weight: 500; color: var(--text-dark); }
body[data-theme="dark"] .breadcrumbs li { color: var(--text-dark-mode-secondary); }
body[data-theme="dark"] .breadcrumbs li:not(:last-child)::after { color: var(--text-dark-mode-secondary); }
body[data-theme="dark"] .breadcrumbs a { color: var(--neon-blue); }
body[data-theme="dark"] .breadcrumbs a:hover { color: var(--text-dark-mode); }
body[data-theme="dark"] .breadcrumbs li[aria-current="page"] { color: var(--text-dark-mode); }
.features-hero-section { padding: 60px 0; background: linear-gradient(135deg, rgba(var(--tech-blue-rgb), 0.05) 0%, rgba(var(--tech-blue-rgb), 0.0) 100%), var(--background-light); }
body[data-theme="dark"] .features-hero-section { background: linear-gradient(135deg, rgba(var(--neon-blue-rgb), 0.08) 0%, rgba(var(--neon-blue-rgb), 0.0) 100%), var(--dark-mode-bg); }
.features-main-title { font-size: 2.6rem; font-weight: 700; color: var(--text-dark); margin-bottom: 15px; }
body[data-theme="dark"] .features-main-title { color: var(--text-dark-mode); }
.features-subtitle { font-size: 1.2rem; color: var(--text-grey); max-width: 750px; margin: 0 auto; line-height: 1.6; }
body[data-theme="dark"] .features-subtitle { color: var(--text-dark-mode-secondary); }
.core-features-section {}
.features-grid-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.feature-card { background-color: var(--background-light); padding: 35px 30px; border-radius: 8px; border: 1px solid var(--border-color); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05); transition: transform 0.3s ease, box-shadow 0.3s ease; display: flex; flex-direction: column; }
.feature-card:hover { transform: translateY(-5px); box-shadow: var(--card-hover-shadow); }
.feature-card .feature-icon { color: var(--tech-blue); margin-bottom: 20px; font-size: 1.8rem; display: block; text-align: center; width: 100%; }
.feature-card h3 { font-size: 1.3rem; font-weight: 600; margin-bottom: 10px; color: var(--text-dark); text-align: center; }
.feature-card p { color: #666; font-size: 0.95rem; line-height: 1.6; flex-grow: 1; text-align: center; }
.feature-card .highlight { color: var(--tech-blue); font-weight: 600; }
body[data-theme="dark"] .feature-card { background-color: #1e293b; border-color: var(--border-color-dark); box-shadow: 0 2px 8px rgba(0,0,0,0.15); }
body[data-theme="dark"] .feature-card .feature-icon { color: var(--neon-blue); }
body[data-theme="dark"] .feature-card h3 { color: var(--text-dark-mode); }
body[data-theme="dark"] .feature-card p { color: var(--text-dark-mode-secondary); }
body[data-theme="dark"] .feature-card .highlight { color: var(--neon-blue); }
.tech-comparison-section {}
.comparison-table-container { overflow-x: auto; margin-top: 30px; display: block; }
.comparison-table { width: 100%; border-collapse: collapse; background-color: var(--background-light); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05); border-radius: 8px; overflow: hidden; }
.comparison-table th, .comparison-table td { padding: 15px 20px; text-align: left; border-bottom: 1px solid var(--border-color); font-size: 0.95rem; }
.comparison-table th { background-color: var(--background-grey); font-weight: 600; color: var(--text-dark); }
.comparison-table td { color: #666; }
.comparison-table tbody tr:last-child td { border-bottom: none; }
.comparison-table td.highlight-data { color: var(--tech-blue); font-weight: 600; }
body[data-theme="dark"] .comparison-table { background-color: #1e293b; border-color: var(--border-color-dark); }
body[data-theme="dark"] .comparison-table th { background-color: #334155; color: var(--text-dark-mode); }
body[data-theme="dark"] .comparison-table td { color: var(--text-dark-mode-secondary); border-bottom-color: var(--border-color-dark); }
body[data-theme="dark"] .comparison-table td.highlight-data { color: var(--neon-blue); }
.comparison-mobile-summary { display: none; margin-top: 30px; background-color: var(--background-light); padding: 25px; border-radius: 8px; border: 1px solid var(--border-color); }
body[data-theme="dark"] .comparison-mobile-summary { background-color: #1e293b; border-color: var(--border-color-dark); }
.comparison-mobile-summary ul { list-style: none; padding: 0; }
.comparison-mobile-summary li { margin-bottom: 12px; font-size: 1rem; display: flex; align-items: center; gap: 10px; color: #666; }
body[data-theme="dark"] .comparison-mobile-summary li { color: var(--text-dark-mode-secondary); }
.comparison-mobile-summary i { color: #28a745; font-size: 1.2rem; }
.comparison-mobile-summary .highlight-data { color: var(--tech-blue); font-weight: 600; }
body[data-theme="dark"] .comparison-mobile-summary .highlight-data { color: var(--neon-blue); }
.features-cta-section { background-color: #f0f4ff; }
body[data-theme="dark"] .features-cta-section { background-color: rgba(var(--neon-blue-rgb), 0.05); }
.features-cta-section h2 { font-size: 1.8rem; font-weight: 600; color: var(--text-dark); margin-bottom: 30px; max-width: 600px; margin-left: auto; margin-right: auto; }
body[data-theme="dark"] .features-cta-section h2 { color: var(--text-dark-mode); }
.features-cta-section .cta-button { margin-bottom: 20px; }
.features-cta-section .cta-button i { margin-right: 8px; }
.supported-systems { font-size: 0.9rem; color: var(--text-grey); }
body[data-theme="dark"] .supported-systems { color: var(--text-dark-mode-secondary); }

/* =========================================== */
/* --- 8. List Page Specific Styles --- */
/* =========================================== */
.list-page-wrapper { background-color: var(--background-grey-alt); padding-top: 40px; padding-bottom: 80px; }
body[data-theme="dark"] .list-page-wrapper { background-color: var(--dark-mode-bg); }
.list-page-container { display: flex; gap: 30px; }
.main-content-area { flex: 1 1 70%; min-width: 0; }
.sidebar-area { flex: 0 0 300px; position: relative; height: fit-content; margin-top: 105px;}
.list-header { margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid var(--border-color); display: flex; flex-wrap: wrap; align-items: center; gap: 15px 20px; }
body[data-theme="dark"] .list-header { border-bottom-color: var(--border-color-dark); }
.list-title { font-size: 1.8rem; font-weight: 700; color: var(--text-dark); margin: 0; margin-right: auto; }
body[data-theme="dark"] .list-title { color: var(--text-dark-mode); }
.filter-tabs { display: flex; gap: 10px; flex-wrap: wrap; order: 3; width: 100%; }
.filter-tab { background-color: transparent; border: 1px solid var(--border-color); color: var(--text-grey); padding: 6px 15px; border-radius: 20px; font-size: 0.9rem; cursor: pointer; transition: all 0.3s ease; white-space: nowrap; }
body[data-theme="dark"] .filter-tab { border-color: var(--border-color-dark); color: var(--text-dark-mode-secondary); }
.filter-tab:hover { background-color: #e9ecef; border-color: #ced4da; color: var(--text-dark); }
body[data-theme="dark"] .filter-tab:hover { background-color: #334155; border-color: #4b5563; color: var(--text-dark-mode); }
.filter-tab.active { background-color: var(--tech-blue); color: var(--background-light); border-color: var(--tech-blue); font-weight: 500; }
body[data-theme="dark"] .filter-tab.active { background-color: var(--neon-blue); color: var(--dark-mode-bg); border-color: var(--neon-blue); }
.item-count { font-size: 0.9rem; color: var(--text-grey); margin: 0; white-space: nowrap; order: 2; }
body[data-theme="dark"] .item-count { color: var(--text-dark-mode-secondary); }
.article-list { display: flex; flex-direction: column; gap: 25px; }
.article-card { background-color: var(--background-light); border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06); border: 1px solid var(--border-color); display: flex; overflow: hidden; transition: box-shadow 0.3s ease; opacity: 0; animation: fadeIn 0.5s ease forwards; }
body[data-theme="dark"] .article-card { background-color: #1e293b; border-color: var(--border-color-dark); box-shadow: 0 2px 10px rgba(0,0,0,0.2);}
.article-card:hover { box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1); }
body[data-theme="dark"] .article-card:hover { box-shadow: 0 5px 15px rgba(0,0,0,0.3); }
.card-image-link { flex: 0 0 240px; display: block; }
.card-image-link img { display: block; width: 100%; height: 160px; object-fit: cover; }
.article-card .card-content { padding: 20px 25px; flex-grow: 1; display: flex; flex-direction: column; }
.article-card .card-title { font-size: 1.125rem; font-weight: 600; color: var(--text-dark); margin: 0 0 10px 0; line-height: 1.4; }
body[data-theme="dark"] .article-card .card-title { color: var(--text-dark-mode); }
.article-card .card-title a { color: inherit; text-decoration: none; transition: color 0.3s ease; }
.article-card:hover .card-title a { color: var(--tech-blue); }
body[data-theme="dark"] .article-card:hover .card-title a { color: var(--neon-blue); }
.article-card .excerpt { font-size: 0.875rem; color: #666; line-height: 1.6; margin-bottom: 15px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; text-overflow: ellipsis; flex-grow: 1; min-height: 44px; }
body[data-theme="dark"] .article-card .excerpt { color: var(--text-dark-mode-secondary); }
.article-card .card-meta { margin-top: auto; display: flex; flex-wrap: wrap; align-items: center; gap: 10px 15px; margin-bottom: 10px; }
.article-card .tag { display: inline-block; padding: 3px 8px; border-radius: 4px; font-size: 0.75rem; font-weight: 500; line-height: 1.4; color: #fff; white-space: nowrap; }
.tag-tutorial { background-color: #28a745; } .tag-video { background-color: #6f42c1; } .tag-case { background-color: #fd7e14; } .tag-ecommerce { background-color: #ffc107; color: #333;} .tag-tech { background-color: #007bff; } .tag-security { background-color: #dc3545; } .tag-news { background-color: #17a2b8; }
.article-card .publish-date { font-size: 0.8rem; color: var(--text-grey); margin-left: auto; white-space: nowrap; padding-left: 10px; }
body[data-theme="dark"] .article-card .publish-date { color: var(--text-dark-mode-secondary); }
.article-card .read-more { font-size: 0.85rem; font-weight: 600; color: var(--tech-blue); text-decoration: none; align-self: flex-start; transition: color 0.3s ease; display: inline-flex; align-items: center; gap: 4px; }
body[data-theme="dark"] .article-card .read-more { color: var(--neon-blue); }
.article-card .read-more:hover { color: var(--tech-blue-hover); }
body[data-theme="dark"] .article-card .read-more:hover { color: var(--text-dark-mode); }
.article-card .read-more i { font-size: 0.75rem; }
.pagination { display: flex; justify-content: center; align-items: center; margin-top: 50px; gap: 8px; flex-wrap: wrap; }
.page-link { display: inline-flex; justify-content: center; align-items: center; padding: 8px 14px; min-width: 40px; height: 40px; border: 1px solid var(--border-color); border-radius: 6px; background-color: var(--background-light); color: var(--tech-blue); text-decoration: none; font-size: 0.9rem; transition: all 0.3s ease; line-height: 1; }
body[data-theme="dark"] .page-link { background-color: #1e293b; border-color: var(--border-color-dark); color: var(--neon-blue);}
.page-link:hover:not(.disabled):not(.active) { background-color: #e9ecef; border-color: #adb5bd; color: var(--tech-blue-hover); }
body[data-theme="dark"] .page-link:hover:not(.disabled):not(.active) { background-color: #334155; border-color: #4b5563; color: var(--text-dark-mode); }
.page-link.active { background-color: var(--tech-blue); color: var(--background-light); border-color: var(--tech-blue); font-weight: 600; cursor: default; }
body[data-theme="dark"] .page-link.active { background-color: var(--neon-blue); color: var(--dark-mode-bg); border-color: var(--neon-blue); }
.page-link.disabled { color: var(--text-grey); background-color: var(--background-grey); border-color: var(--border-color); cursor: not-allowed; opacity: 0.7; }
body[data-theme="dark"] .page-link.disabled { color: var(--text-dark-mode-secondary); background-color: #334155; border-color: var(--border-color-dark); }
.page-link.prev i { margin-right: 5px; } .page-link.next i { margin-left: 5px; }
.page-link.ellipsis { border: none; background: none; color: var(--text-grey); cursor: default; padding: 8px 5px; min-width: auto; height: auto; }
body[data-theme="dark"] .page-link.ellipsis { color: var(--text-dark-mode-secondary); }
.sidebar-widget { background-color: var(--background-light); padding: 25px; border-radius: 8px; margin-bottom: 25px; box-shadow: 0 1px 6px rgba(0, 0, 0, 0.05); border: 1px solid var(--border-color); }
body[data-theme="dark"] .sidebar-widget { background-color: #1e293b; border-color: var(--border-color-dark); box-shadow: 0 1px 6px rgba(0,0,0,0.2); }
.sidebar-widget:last-child { margin-bottom: 0; }
.widget-title { font-size: 1.1rem; font-weight: 600; color: var(--text-dark); margin: 0 0 20px 0; padding-bottom: 10px; border-bottom: 1px solid #E5E7EB; display: flex; align-items: center; gap: 8px; }
body[data-theme="dark"] .widget-title { color: var(--text-dark-mode); border-bottom-color: var(--border-color-dark); }
.search-container { position: relative; display: flex; }
.search-container input[type="search"] { flex-grow: 1; padding: 10px 15px 10px 40px; border: 1px solid var(--border-color); border-radius: 6px 0 0 6px; font-size: 0.9rem; transition: border-color 0.3s ease, box-shadow 0.3s ease; outline: none; height: 40px; background-color: var(--background-light); color: var(--text-dark);}
body[data-theme="dark"] .search-container input[type="search"] { background-color: var(--dark-mode-bg); border-color: var(--border-color-dark); color: var(--text-dark-mode);}
.search-container input[type="search"]:focus { border-color: var(--tech-blue); box-shadow: 0 0 0 3px rgba(var(--tech-blue-rgb), 0.15); z-index: 2; position: relative; }
body[data-theme="dark"] .search-container input[type="search"]:focus { border-color: var(--neon-blue); box-shadow: 0 0 0 3px rgba(var(--neon-blue-rgb), 0.2); }
.search-container::before { content: "\f002"; font-family: "Font Awesome 6 Free", "Font Awesome 6 Pro"; font-weight: 900; position: absolute; left: 15px; top: 50%; transform: translateY(-50%); color: var(--text-grey); font-size: 0.9rem; z-index: 3; pointer-events: none; }
body[data-theme="dark"] .search-container::before { color: var(--text-dark-mode-secondary); }
.search-container button[type="submit"] { flex-shrink: 0; padding: 0 15px; border: 1px solid var(--tech-blue); background-color: var(--tech-blue); color: white; border-radius: 0 6px 6px 0; cursor: pointer; transition: all 0.3s ease; height: 40px; margin-left: -1px; }
body[data-theme="dark"] .search-container button[type="submit"] { border-color: var(--neon-blue); background-color: var(--neon-blue); color: var(--dark-mode-bg); }
.search-container button[type="submit"]:hover { background-color: var(--tech-blue-hover); border-color: var(--tech-blue-hover); }
body[data-theme="dark"] .search-container button[type="submit"]:hover { background-color: var(--neon-blue-hover); border-color: var(--neon-blue-hover); }
.search-suggestions { position: absolute; top: calc(100% + 2px); left: 0; right: 0; background-color: var(--background-light); border: 1px solid var(--border-color); border-radius: 6px; box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1); list-style: none; padding: 5px 0; margin: 0; z-index: 10; max-height: 200px; overflow-y: auto; opacity: 0; visibility: hidden; transform: translateY(-5px); transition: all 0.2s ease; }
body[data-theme="dark"] .search-suggestions { background-color: #1e293b; border-color: var(--border-color-dark); box-shadow: 0 5px 15px rgba(0,0,0,0.3); }
.search-suggestions.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.search-suggestions li a { display: block; padding: 8px 15px; color: var(--text-dark); text-decoration: none; font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: background-color 0.2s ease; }
body[data-theme="dark"] .search-suggestions li a { color: var(--text-dark-mode); }
.search-suggestions li a:hover { background-color: var(--background-grey); }
body[data-theme="dark"] .search-suggestions li a:hover { background-color: #334155; }
.category-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.category-tab { background-color: var(--background-grey); border: 1px solid var(--border-color); color: var(--text-grey); padding: 5px 12px; border-radius: 6px; font-size: 0.85rem; cursor: pointer; transition: all 0.3s ease; white-space: nowrap; }
body[data-theme="dark"] .category-tab { background-color: #334155; border-color: #4b5563; color: var(--text-dark-mode-secondary); }
.category-tab:hover { background-color: #e0e0e0; border-color: #c0c0c0; color: var(--text-dark); }
body[data-theme="dark"] .category-tab:hover { background-color: #4b5563; border-color: #6b7280; color: var(--text-dark-mode); }
.category-tab.active { background-color: var(--tech-blue); color: var(--background-light); border-color: var(--tech-blue); font-weight: 500; }
body[data-theme="dark"] .category-tab.active { background-color: var(--neon-blue); color: var(--dark-mode-bg); border-color: var(--neon-blue); }
.popular-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 15px; }
.popular-item { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.popular-item img { flex-shrink: 0; width: 60px; height: 60px; object-fit: cover; border-radius: 6px; }
.popular-item p { font-size: 0.9rem; color: var(--text-dark); line-height: 1.4; margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; text-overflow: ellipsis; transition: color 0.3s ease; }
body[data-theme="dark"] .popular-item p { color: var(--text-dark-mode); }
.popular-item:hover p { color: var(--tech-blue); }
body[data-theme="dark"] .popular-item:hover p { color: var(--neon-blue); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px 10px; }
.tag-link { display: inline-block; background-color: var(--background-grey); border: 1px solid var(--border-color); color: var(--text-grey); padding: 4px 10px; border-radius: 4px; font-size: 0.85rem; text-decoration: none; transition: all 0.3s ease; }
body[data-theme="dark"] .tag-link { background-color: #334155; border-color: #4b5563; color: var(--text-dark-mode-secondary); }
.tag-link:hover { background-color: var(--tech-blue); color: var(--background-light); border-color: var(--tech-blue); }
body[data-theme="dark"] .tag-link:hover { background-color: var(--neon-blue); color: var(--dark-mode-bg); border-color: var(--neon-blue); }
.sidebar-accordion-trigger { display: none; width: 100%; padding: 12px 15px; background-color: var(--background-grey); border: 1px solid var(--border-color); border-radius: 6px; text-align: center; font-weight: 600; color: var(--text-dark); cursor: pointer; margin-top: 25px; }
body[data-theme="dark"] .sidebar-accordion-trigger { background-color: #334155; border-color: #4b5563; color: var(--text-dark-mode); }
.sidebar-accordion-trigger i { margin-left: 8px; transition: transform 0.3s ease; }
.sidebar-accordion-trigger[aria-expanded="true"] i { transform: rotate(180deg); }
.sidebar-mobile-content { margin-top: 15px; border-top: 1px solid var(--border-color); padding-top: 15px; }
body[data-theme="dark"] .sidebar-mobile-content { border-top-color: var(--border-color-dark); }
#sidebar-mobile-content .sidebar-widget { background: none; border: none; box-shadow: none; padding: 0 0 15px 0; margin-bottom: 15px; border-bottom: 1px solid var(--border-color); border-radius: 0; }
body[data-theme="dark"] #sidebar-mobile-content .sidebar-widget { border-bottom-color: var(--border-color-dark); }
#sidebar-mobile-content .sidebar-widget:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0;}

/* =========================================== */
/* --- 9. About Us Page Specific Styles --- */
/* =========================================== */
body.about-page { background-color: var(--deep-space-blue); color: var(--text-dark-mode); }
.about-hero-section { position: relative; min-height: 50vh; max-height: 450px; overflow: hidden; display: flex; justify-content: center; align-items: center; text-align: center; color: #ffffff; }
.particles-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; }
#particles-js-about { width: 100%; height: 100%; }
.about-hero-section .hero-content { position: relative; z-index: 1; max-width: 800px; padding: 40px 20px; }
.about-hero-section .hero-title { font-size: clamp(1.8rem, 4.5vw, 2.5rem); font-weight: 700; margin-bottom: 15px; text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4); line-height: 1.2; }
.about-hero-section .hero-subtitle { font-size: clamp(0.9rem, 2vw, 1.1rem); font-weight: 400; color: #CCD6F6; max-width: 600px; margin: 0 auto; line-height: 1.6; }
.company-intro-section { background-color: var(--background-light); color: var(--text-dark); overflow: hidden; }
.company-intro-section .section-title { color: var(--text-dark); margin-bottom: 60px; }
.intro-grid { display: flex; align-items: center; gap: 50px; }
.intro-text { flex: 1 1 55%; min-width: 0; }
.intro-text h3 { font-family: var(--font-primary); font-size: 1.5rem; font-weight: 600; color: var(--text-dark); margin-bottom: 20px; position: relative; padding-bottom: 10px; }
.intro-text h3::after { content: ''; position: absolute; left: 0; bottom: 0; width: 50px; height: 3px; background-color: var(--tech-blue); }
.intro-text p { font-family: var(--font-serif-cn); font-size: 1rem; line-height: 1.8; color: var(--text-grey); margin-bottom: 1.5em; }
.intro-text p:last-of-type { margin-bottom: 2em; }
.intro-text ul { list-style: none; padding-left: 0; margin-bottom: 2.5em; }
.intro-text ul li { margin-bottom: 10px; display: flex; align-items: flex-start; gap: 10px; font-size: 1rem; color: var(--text-dark); }
.intro-text ul li i { color: var(--tech-blue); margin-top: 4px; font-size: 1.1rem; flex-shrink: 0; }
.intro-cta.btn { margin-top: 10px; }
.intro-image { flex: 1 1 45%; text-align: center; }
.intro-image img { max-width: 100%; height: auto; border-radius: 12px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1); display: block; margin: 0 auto; }
.team-section { background-color: var(--background-grey); color: var(--text-dark); }
.team-section .section-title { color: var(--text-dark); margin-bottom: 60px; }
.team-slider { display: flex; overflow-x: auto; gap: 30px; padding: 10px 0 30px 0; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: thin; scrollbar-color: var(--tech-blue) var(--background-grey); }
.team-slider::-webkit-scrollbar { height: 8px; }
.team-slider::-webkit-scrollbar-track { background: var(--background-grey); border-radius: 4px; }
.team-slider::-webkit-scrollbar-thumb { background-color: var(--tech-blue); border-radius: 4px; border: 2px solid var(--background-grey); }
.team-card { flex: 0 0 320px; background-color: #ffffff; border-radius: 12px; box-shadow: 0 4px 20px rgba(0, 0, 0, 0.07); padding: 30px; text-align: center; scroll-snap-align: center; transition: transform 0.3s ease, box-shadow 0.3s ease; position: relative; overflow: hidden; }
.team-card:hover { transform: translateY(-8px); box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1); }
.member-photo { width: 130px; height: 130px; border-radius: 50%; overflow: hidden; margin: 0 auto 20px auto; border: 4px solid #ffffff; box-shadow: 0 0 15px rgba(var(--tech-blue-rgb), 0.2); position: relative; z-index: 1; }
.member-photo img { display: block; width: 100%; height: 100%; object-fit: cover; }
.member-name { font-size: 1.3rem; font-weight: 600; margin-bottom: 5px; color: var(--text-dark); }
.member-title { font-size: 0.9rem; color: var(--tech-blue); margin-bottom: 15px; font-weight: 500; }
.member-bio { font-size: 0.9rem; color: var(--text-grey); line-height: 1.5; margin-bottom: 30px; min-height: 65px; }
.member-social { position: absolute; bottom: 0; left: 0; right: 0; background: linear-gradient(to top, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0)); padding: 25px 20px 15px 20px; display: flex; justify-content: center; gap: 20px; opacity: 0; transform: translateY(10px); transition: opacity 0.3s ease, transform 0.3s ease; z-index: 2; }
.team-card:hover .member-social { opacity: 1; transform: translateY(0); }
.member-social a { color: var(--text-grey); font-size: 1.2rem; transition: color 0.3s ease, transform 0.3s ease; }
.member-social a:hover { color: var(--tech-blue); transform: scale(1.1); }
.achievements-section { background-color: var(--background-light); color: var(--text-dark); text-align: center; overflow: hidden; }
.achievements-section .section-title { color: var(--text-dark); margin-bottom: 60px; }
.data-cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 30px; max-width: 1200px; margin: 0 auto; }
.data-card { background-color: #ffffff; padding: 35px 25px; border-radius: 10px; box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06); transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s ease; border: 1px solid var(--border-color); position: relative; overflow: hidden; }
.data-card:hover { transform: translateY(-10px) scale(1.02); box-shadow: 0 10px 25px rgba(var(--tech-blue-rgb), 0.15); }
.data-icon { font-size: 2.5rem; color: var(--tech-blue); margin-bottom: 20px; display: block; line-height: 1; }
.data-value { font-size: 2.2rem; font-weight: 700; color: var(--text-dark); margin-bottom: 5px; line-height: 1.2; }
.data-label { font-size: 0.95rem; color: var(--text-grey); margin-bottom: 0; }
.values-section { background-color: var(--background-grey); color: var(--text-dark); }
.values-section .section-title { color: var(--text-dark); margin-bottom: 60px; }
.values-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 40px; max-width: 1100px; margin: 0 auto; }
.value-card { background-color: #ffffff; padding: 40px 30px; border-radius: 15px; box-shadow: 0 5px 20px rgba(0, 0, 0, 0.07); border: 1px solid transparent; text-align: center; transform: rotate(-3deg) scale(0.98); transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.3s ease, border-color 0.3s ease; position: relative; z-index: 1; }
.value-card:nth-child(even) { transform: rotate(3deg) scale(0.98); z-index: 0; }
.value-card:hover { transform: rotate(0) translateY(-10px) scale(1); box-shadow: 0 12px 30px rgba(var(--tech-blue-rgb), 0.18); border-color: var(--tech-blue); z-index: 2; }
.value-icon { font-size: 2.8rem; margin-bottom: 25px; display: inline-block; color: var(--tech-blue); transition: color 0.3s ease; }
.value-card:hover .value-icon { color: var(--purple-gradient-start); }
.value-title { font-size: 1.4rem; font-weight: 600; margin-bottom: 15px; color: var(--text-dark); }
.value-description { font-size: 0.95rem; color: var(--text-grey); line-height: 1.6; }
.about-cta-section { background-color: var(--deep-space-blue); padding: 80px 0; text-align: center; color: #ffffff; }
.about-cta-section .cta-content { max-width: 800px; margin: 0 auto; padding: 0 20px; }
.about-cta-section .cta-title { font-size: 2rem; font-weight: 600; color: inherit; margin-bottom: 35px; }
.about-cta-section .cta-buttons { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.about-cta-section .cta-button { min-width: 180px; padding: 14px 30px; font-size: 1rem; }
.about-cta-section .btn-primary { background: linear-gradient(90deg, var(--purple-gradient-start) 0%, var(--tech-blue) 100%); border: none; box-shadow: 0 5px 15px rgba(108, 92, 231, 0.4); transition: all 0.3s ease; }
.about-cta-section .btn-primary:hover { background: linear-gradient(90deg, #5a4ae2 0%, #285ee3 100%); box-shadow: 0 8px 20px rgba(108, 92, 231, 0.5); transform: translateY(-3px); }
.about-cta-section .btn-secondary { background-color: rgba(255, 255, 255, 0.1); color: #ffffff; border: 1px solid rgba(255, 255, 255, 0.3); transition: all 0.3s ease; }
.about-cta-section .btn-secondary:hover { background-color: rgba(255, 255, 255, 0.2); border-color: rgba(255, 255, 255, 0.5); transform: translateY(-3px); }


/* ===================================================== */
/* --- 10. Pricing Page Specific Styles --- */
/* ===================================================== */
/* Pricing Options Section */
.pricing-options-section {}
.pricing-options-section .section-subtitle { margin-bottom: 50px; }
.pricing-toggle { display: flex; justify-content: center; margin-bottom: 40px; background-color: var(--background-grey); padding: 5px; border-radius: 30px; width: fit-content; margin-left: auto; margin-right: auto; box-shadow: inset 0 1px 3px rgba(0,0,0,0.1); }
body[data-theme="dark"] .pricing-toggle { background-color: #1e293b; box-shadow: inset 0 1px 3px rgba(0,0,0,0.3); }
.toggle-option { padding: 8px 25px; border: none; background-color: transparent; color: var(--text-grey); font-size: 0.95rem; font-weight: 500; border-radius: 25px; cursor: pointer; transition: all 0.3s ease; }
body[data-theme="dark"] .toggle-option { color: var(--text-dark-mode-secondary); }
.toggle-option.active { background-color: var(--background-light); color: var(--tech-blue); font-weight: 600; box-shadow: 0 1px 5px rgba(0,0,0,0.1); }
body[data-theme="dark"] .toggle-option.active { background-color: var(--neon-blue); color: var(--dark-mode-bg); box-shadow: 0 1px 5px rgba(var(--neon-blue-rgb), 0.3); }
/* Pricing Grid */
.pricing-grid-page { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; align-items: stretch; }
/* Pricing Card */
.pricing-card-page { background-color: var(--background-light); padding: 35px; border-radius: 12px; border: 1px solid var(--border-color); display: flex; flex-direction: column; text-align: center; transition: all 0.3s ease; position: relative; box-shadow: 0 3px 10px rgba(0,0,0,0.05); }
body[data-theme="dark"] .pricing-card-page { background-color: #1e293b; border-color: var(--border-color-dark); box-shadow: 0 3px 10px rgba(0,0,0,0.2); }
.pricing-card-page:hover { transform: translateY(-6px); box-shadow: 0 8px 25px rgba(0,0,0,0.1); }
body[data-theme="dark"] .pricing-card-page:hover { box-shadow: 0 8px 25px rgba(0,0,0,0.3); }
.pricing-card-page.recommended { border: 2px solid var(--tech-blue); box-shadow: 0 0 25px rgba(var(--tech-blue-rgb), 0.15); }
body[data-theme="dark"] .pricing-card-page.recommended { border-color: var(--neon-blue); box-shadow: 0 0 25px rgba(var(--neon-blue-rgb), 0.2); }
.pricing-card-page .badge { position: absolute; top: 15px; right: -1px; background-color: var(--tech-blue); color: var(--background-light); font-size: 0.75rem; font-weight: 600; padding: 5px 12px; border-radius: 0 0 0 6px; text-transform: uppercase; letter-spacing: 0.5px; }
body[data-theme="dark"] .pricing-card-page .badge { background-color: var(--neon-blue); color: var(--dark-mode-bg); }
.pricing-card-page .plan-name { font-size: 1.4rem; font-weight: 600; margin-bottom: 10px; color: var(--text-dark); }
body[data-theme="dark"] .pricing-card-page .plan-name { color: var(--text-dark-mode); }
.pricing-card-page .plan-description { font-size: 0.9rem; color: var(--text-grey); margin-bottom: 25px; min-height: 36px; }
body[data-theme="dark"] .pricing-card-page .plan-description { color: var(--text-dark-mode-secondary); }
.pricing-card-page .plan-price { margin-bottom: 30px; line-height: 1; }
.pricing-card-page .plan-price .currency { font-size: 1.5rem; font-weight: 500; color: var(--text-grey); vertical-align: super; margin-right: 2px; }
body[data-theme="dark"] .pricing-card-page .plan-price .currency { color: var(--text-dark-mode-secondary); }
.pricing-card-page .plan-price .amount { font-size: 3rem; font-weight: 700; color: var(--text-dark); letter-spacing: -1px; }
body[data-theme="dark"] .pricing-card-page .plan-price .amount { color: var(--text-dark-mode); }
.pricing-card-page.recommended .plan-price .amount { color: var(--tech-blue); }
body[data-theme="dark"] .pricing-card-page.recommended .plan-price .amount { color: var(--neon-blue); }
.pricing-card-page .plan-price .plan-period { font-size: 1rem; font-weight: 400; color: var(--text-grey); margin-left: 3px; }
body[data-theme="dark"] .pricing-card-page .plan-price .plan-period { color: var(--text-dark-mode-secondary); }
.pricing-card-page .plan-price.custom-price { margin-top: 10px; margin-bottom: 45px; }
.pricing-card-page .plan-price.custom-price .amount { font-size: 1.5rem; color: var(--text-grey); }
body[data-theme="dark"] .pricing-card-page .plan-price.custom-price .amount { color: var(--text-dark-mode-secondary); }
.pricing-card-page .plan-price.custom-price .plan-period { display: block; font-size: 0.9rem; }
.pricing-card-page .plan-features { list-style: none; margin-bottom: 35px; text-align: left; padding-left: 10px; flex-grow: 1; }
.pricing-card-page .plan-features li { margin-bottom: 12px; color: var(--text-dark); display: flex; align-items: center; gap: 10px; font-size: 0.95rem; }
body[data-theme="dark"] .pricing-card-page .plan-features li { color: var(--text-dark-mode); }
.pricing-card-page .plan-features i.fa-check-circle { color: #28a745; font-size: 1.1rem; flex-shrink: 0; }
.pricing-card-page .plan-features i.fa-times-circle { color: var(--text-muted); font-size: 1.1rem; flex-shrink: 0; }
body[data-theme="dark"] .pricing-card-page .plan-features i.fa-times-circle { color: #64748b; }
.pricing-card-page .plan-cta.btn { margin-top: auto; width: 100%; padding: 14px 20px; }

/* Feature Comparison Table */
.feature-comparison-section {}
body[data-theme="dark"] .feature-comparison-section { background-color: var(--dark-mode-bg); }
.feature-comparison-section .section-title { color: var(--text-dark); }
body[data-theme="dark"] .feature-comparison-section .section-title { color: var(--text-dark-mode); }
.comparison-table-container { overflow-x: auto; margin-top: 30px; border: 1px solid var(--border-color); border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
body[data-theme="dark"] .comparison-table-container { border-color: var(--border-color-dark); box-shadow: 0 2px 8px rgba(0,0,0,0.2); }
.comparison-table-page { width: 100%; min-width: 700px; border-collapse: collapse; background-color: var(--background-light); }
body[data-theme="dark"] .comparison-table-page { background-color: #1e293b; }
.comparison-table-page th, .comparison-table-page td { padding: 15px 20px; text-align: left; border-bottom: 1px solid var(--border-color); font-size: 0.95rem; white-space: nowrap; }
body[data-theme="dark"] .comparison-table-page th, body[data-theme="dark"] .comparison-table-page td { border-bottom-color: var(--border-color-dark); }
.comparison-table-page thead th { background-color: var(--background-grey); font-weight: 600; color: var(--text-dark); position: sticky; top: 0; z-index: 1; }
body[data-theme="dark"] .comparison-table-page thead th { background-color: #334155; color: var(--text-dark-mode); }
.comparison-table-page thead th:first-child { text-align: left; position: sticky; left: 0; z-index: 2; background-color: inherit; } /* Inherit th background */
.comparison-table-page tbody tr:nth-child(even) { background-color: var(--background-grey-alt); }
body[data-theme="dark"] .comparison-table-page tbody tr:nth-child(even) { background-color: rgba(255, 255, 255, 0.03); }
.comparison-table-page tbody tr:last-child td { border-bottom: none; }
.comparison-table-page tbody td { color: var(--text-grey); }
body[data-theme="dark"] .comparison-table-page tbody td { color: var(--text-dark-mode-secondary); }
.comparison-table-page tbody td:first-child { font-weight: 500; color: var(--text-dark); position: sticky; left: 0; background-color: inherit; z-index: 1; }
body[data-theme="dark"] .comparison-table-page tbody td:first-child { color: var(--text-dark-mode); }
.comparison-table-page td i.fa-check { color: #28a745; }
.comparison-table-page td i.fa-times { color: var(--text-muted); }
body[data-theme="dark"] .comparison-table-page td i.fa-times { color: #64748b; }
.comparison-table-page td.highlight-feature { font-weight: 600; color: var(--tech-blue); }
body[data-theme="dark"] .comparison-table-page td.highlight-feature { color: var(--neon-blue); }

/* FAQ Section */
.pricing-faq-section {}
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 15px; }
.faq-item { border: 1px solid var(--border-color); border-radius: 8px; background-color: var(--background-light); transition: all 0.3s ease; }
body[data-theme="dark"] .faq-item { border-color: var(--border-color-dark); background-color: #1e293b; }
.faq-item[open] { border-color: var(--tech-blue); }
body[data-theme="dark"] .faq-item[open] { border-color: var(--neon-blue); }
.faq-question { display: flex; justify-content: space-between; align-items: center; padding: 18px 20px; font-size: 1.1rem; font-weight: 500; cursor: pointer; color: var(--text-dark); list-style: none; transition: color 0.3s ease; }
body[data-theme="dark"] .faq-question { color: var(--text-dark-mode); }
.faq-question::-webkit-details-marker { display: none; }
.faq-question i { font-size: 0.8em; color: var(--text-grey); transition: transform 0.3s ease, color 0.3s ease; }
body[data-theme="dark"] .faq-question i { color: var(--text-dark-mode-secondary); }
.faq-item[open] .faq-question i { transform: rotate(180deg); color: var(--tech-blue); }
body[data-theme="dark"] .faq-item[open] .faq-question i { color: var(--neon-blue); }
.faq-answer { padding: 0px 20px 20px 20px; color: var(--text-grey); font-size: 0.95rem; line-height: 1.7; border-top: 1px dashed var(--border-color); margin-top: 10px; transition: all 0.3s ease; }
body[data-theme="dark"] .faq-answer { color: var(--text-dark-mode-secondary); border-top-color: var(--border-color-dark); }
.faq-answer p:last-child { margin-bottom: 0; }


/* ===================================================== */
/* --- 11. Standard Article Detail Page Styles --- */
/* ===================================================== */
/* Theme variables and body styles defined in this class */
.article-detail-standard { /* Light Mode Defaults Inherited from :root if matching */ }
.article-detail-standard[data-theme="dark"] { /* Dark Mode Overrides Inherited */ }
/* Standard Article Header */
.article-hero-standard { padding: 40px 0 35px 0; background-color: var(--article-bg, var(--background-light)); border-bottom: 1px solid var(--article-border, var(--border-color)); margin-top: var(--header-height); transition: background-color 0.3s ease, border-color 0.3s ease; }
.breadcrumbs-article { margin-bottom: 25px; background: none; padding: 0; border: none; }
.article-title-standard { font-family: var(--article-heading-font, var(--font-primary)); font-size: clamp(2rem, 5.5vw, 2.8rem); font-weight: 700; line-height: 1.3; margin-bottom: 20px; color: var(--article-text, var(--text-dark)); max-width: 900px; }
.meta-info-standard { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 15px; font-size: 0.875rem; color: var(--article-text-muted, var(--text-grey)); }
.meta-info-standard .author-info { display: inline-flex; align-items: center; gap: 8px; }
.meta-info-standard .author-avatar { width: 32px; height: 32px; border-radius: 50%; object-fit: cover; }
.meta-info-standard .author-name { font-weight: 500; color: var(--article-text-secondary, #4A5568); }
.meta-info-standard .separator { opacity: 0.5; }
.meta-info-standard .read-time { white-space: nowrap; }
.share-buttons-standard { margin-left: auto; display: flex; gap: 10px; }
.share-buttons-standard button { background: none; border: 1px solid var(--article-border, var(--border-color)); color: var(--article-text-muted, var(--text-grey)); width: 32px; height: 32px; border-radius: 50%; font-size: 0.9rem; cursor: pointer; display: inline-flex; justify-content: center; align-items: center; transition: all 0.2s ease; }
.share-buttons-standard button:hover { color: var(--article-accent, var(--tech-blue)); border-color: var(--article-accent, var(--tech-blue)); background-color: rgba(var(--article-accent-rgb, var(--tech-blue-rgb)), 0.05); }
/* Standard Article Layout */
.article-wrapper-standard { display: flex; flex-wrap: nowrap; gap: 50px; padding-top: 50px; padding-bottom: 60px; }
.article-content-standard { flex: 1 1 68%; min-width: 0; max-width: var(--main-content-width-standard, 80ch); margin: 0; }
.article-sidebar-standard { flex: 0 0 300px; position: relative; height: fit-content; }
.sidebar-sticky-content { position: sticky; top: calc(var(--header-height, 70px) + 30px); max-height: calc(100vh - var(--header-height, 70px) - 50px); overflow-y: auto; padding-right: 10px; scrollbar-width: thin; scrollbar-color: var(--article-accent, var(--tech-blue)) transparent; }
.sidebar-sticky-content::-webkit-scrollbar { width: 5px; }
.sidebar-sticky-content::-webkit-scrollbar-thumb { background-color: var(--article-accent, var(--tech-blue)); border-radius: 3px; }
.sidebar-sticky-content::-webkit-scrollbar-track { background: transparent; }
/* Standard Table of Contents */
.toc-nav-standard { background-color: var(--article-toc-bg, var(--background-grey-alt)); padding: 20px; border-radius: 8px; border: 1px solid var(--article-toc-border, var(--border-color)); margin-bottom: 30px; transition: background-color 0.3s ease, border-color 0.3s ease; }
.toc-nav-standard h4 { font-family: var(--article-heading-font, var(--font-primary)); font-size: 0.9rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--article-text-muted, var(--text-grey)); margin: 0 0 15px 0; padding-bottom: 10px; border-bottom: 1px solid var(--article-toc-border, var(--border-color)); display: flex; align-items: center; gap: 8px; transition: color 0.3s ease, border-color 0.3s ease; }
.toc-nav-standard h4 i { font-size: 1.1em; color: var(--article-accent, var(--tech-blue)); }
.toc-list-standard, .toc-list-standard ol { list-style: none; padding: 0; margin: 0; }
.toc-list-standard ol { padding-left: 18px; margin: 8px 0; border-left: 1px solid var(--article-toc-border, var(--border-color)); transition: border-color 0.3s ease; }
.toc-list-standard li { margin-bottom: 5px; }
.toc-list-standard .toc-link { display: block; color: var(--article-toc-link, var(--text-grey)); text-decoration: none; font-size: 0.9rem; line-height: 1.5; padding: 5px 10px; border-left: 3px solid transparent; margin-left: -3px; border-radius: 4px; transition: all 0.2s ease; }
.toc-list-standard .toc-link:hover { color: var(--article-accent, var(--tech-blue)); background-color: rgba(var(--article-accent-rgb, var(--tech-blue-rgb)), 0.08); }
.toc-list-standard .toc-link.active { color: var(--article-accent, var(--tech-blue)); font-weight: 600; border-left-color: var(--article-accent, var(--tech-blue)); background-color: rgba(var(--article-accent-rgb, var(--tech-blue-rgb)), 0.1); }
.toc-list-standard .toc-level-2 a { font-size: 0.85rem; }
/* Optional Sidebar Widgets */
.sidebar-sticky-content .sidebar-widget { background: none; border: none; padding: 0; box-shadow: none; margin-bottom: 30px; }
.sidebar-sticky-content .widget-title { font-family: var(--article-heading-font, var(--font-primary)); font-size: 0.9rem; font-weight: 600; text-transform: uppercase; color: var(--article-text-muted, var(--text-grey)); margin: 0 0 15px 0; padding-bottom: 8px; border-bottom: 1px solid var(--article-toc-border, var(--border-color)); }
.related-links-sidebar { list-style: none; padding: 0; margin: 0; }
.related-links-sidebar li { margin-bottom: 8px; }
.related-links-sidebar a { color: var(--article-text-secondary, #4A5568); text-decoration: none; font-size: 0.9rem; transition: color 0.2s ease; }
.related-links-sidebar a:hover { color: var(--article-accent, var(--tech-blue)); }
/* Content Styles (Reusing Fusion Styles) */
.article-content-standard.article-content-fusion h2, .article-content-standard.article-content-fusion h3 { font-family: var(--article-heading-font); color: var(--article-text); font-weight: 700; margin-top: 2.8em; margin-bottom: 1.2em; line-height: 1.4; scroll-margin-top: calc(var(--header-height) + 30px); transition: background-color 1.5s ease-out; }
.article-content-standard.article-content-fusion h2 { font-size: 1.6rem; padding-bottom: 0.5em; border-left: 5px solid var(--article-accent); padding-left: 0.8em; margin-left: -0.8em; }
.article-content-standard.article-content-fusion h3 { font-size: 1.3rem; font-weight: 600; }
.article-content-standard.article-content-fusion .highlight-anchor { background-color: rgba(255, 229, 100, 0.4); box-shadow: 0 0 0 3px rgba(255, 229, 100, 0.4); border-radius: 3px; padding: 0.1em 0.3em; margin: -0.1em -0.3em; }
.article-content-standard.article-content-fusion p { margin-bottom: 1.6em; color: var(--article-text); position: relative; }
.article-content-standard.article-content-fusion .paragraph-focus-light { position: absolute; left: -20px; top: 0; bottom: 0; width: 4px; background: radial-gradient(circle at center, var(--fusion-focus-light-color, rgba(96, 165, 250, 0.4)) 0%, transparent 80%); border-radius: 2px; opacity: 0; transition: opacity 0.5s ease-out; pointer-events: none; }
.article-content-standard.article-content-fusion .focus-paragraph .paragraph-focus-light { opacity: 1; }
.article-content-standard.article-content-fusion a { color: var(--article-accent); text-decoration: none; border-bottom: 1px solid rgba(var(--article-accent-rgb), 0.3); transition: color 0.2s ease, border-color 0.2s ease; }
.article-content-standard.article-content-fusion a:hover { color: var(--article-accent-hover); border-bottom-color: var(--article-accent-hover); }
.article-content-standard.article-content-fusion ul, .article-content-standard.article-content-fusion ol { margin-bottom: 1.6em; padding-left: 1.8em; }
.article-content-standard.article-content-fusion ul li, .article-content-standard.article-content-fusion ol li { margin-bottom: 0.6em; }
.article-content-standard.article-content-fusion ul li::marker { color: var(--article-accent); }
.article-content-standard.article-content-fusion blockquote { margin: 2em 0; padding: 1.5em 1.8em; background-color: var(--article-quote-bg); border-left: 5px solid var(--article-quote-border); border-radius: 0 8px 8px 0; color: var(--article-text-secondary); font-style: italic; transition: all 0.3s ease; }
.article-content-standard.article-content-fusion blockquote p { margin-bottom: 0; }
.article-content-standard.article-content-fusion strong, .article-content-standard.article-content-fusion b { font-weight: 600; color: var(--article-text); }
.article-content-standard.article-content-fusion .highlight { color: var(--article-accent); font-weight: 600; background-color: rgba(var(--article-accent-rgb), 0.1); padding: 0.1em 0.3em; border-radius: 3px; margin: -0.1em -0.3em; }
.article-content-standard.article-content-fusion .keyword-marker-warning::before, .article-content-standard.article-content-fusion .keyword-marker-note::before { content: ''; display: inline-block; width: 6px; height: 1em; margin-right: 0.4em; margin-left: -1em; border-radius: 3px; background-color: var(--fusion-marker-warning, #F59E0B); vertical-align: baseline; box-shadow: 0 0 6px var(--fusion-marker-warning, #F59E0B); }
.article-content-standard.article-content-fusion .keyword-marker-note::before { background-color: var(--fusion-marker-note, var(--neon-blue)); box-shadow: 0 0 6px var(--fusion-marker-note, var(--neon-blue)); }
.article-content-standard.article-content-fusion .figure-fusion, .article-content-standard.article-content-fusion .code-block-fusion { position: relative; z-index: 1; margin: 2.5em auto; box-shadow: 0 6px 25px -5px var(--article-shadow-color); border-radius: 8px; overflow: hidden; background-color: var(--article-bg); transition: all 0.3s ease; }
.article-content-standard.article-content-fusion .figure-fusion { max-width: 100%; width: fit-content; }
.article-content-standard.article-content-fusion .figure-fusion img { display: block; max-width: 100%; height: auto; border-radius: 8px 8px 0 0; }
.article-content-standard.article-content-fusion .figure-fusion figcaption { font-size: 0.85rem; color: var(--article-text-muted); padding: 10px 15px; text-align: center; background-color: var(--article-bg); border-radius: 0 0 8px 8px; }
.article-content-standard.article-content-fusion .figure-bookmark { position: absolute; top: 10px; right: 10px; background: rgba(var(--article-bg-rgb, 255, 255, 255), 0.7); border: 1px solid var(--article-border); color: var(--article-text-muted); width: 30px; height: 30px; border-radius: 50%; font-size: 0.8rem; cursor: pointer; display: flex; justify-content: center; align-items: center; opacity: 0.5; transition: all 0.2s ease; }
.article-content-standard.article-content-fusion .figure-bookmark:hover { opacity: 1; color: var(--article-accent); border-color: var(--article-accent); background: var(--article-bg); }
.article-content-standard.article-content-fusion .code-block-fusion .copy-button { position: absolute; top: 10px; right: 10px; background-color: rgba(255, 255, 255, 0.1); color: #a0aec0; border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 4px; padding: 4px 8px; font-size: 0.8rem; cursor: pointer; opacity: 0.6; transition: all 0.2s ease; }
.article-content-standard.article-content-fusion .code-block-fusion:hover .copy-button { opacity: 1; }
.article-content-standard.article-content-fusion .code-block-fusion .copy-button:hover { background-color: rgba(255, 255, 255, 0.2); color: #e2e8f0; }
.article-content-standard.article-content-fusion .code-block-fusion pre { margin: 0; border-radius: 8px; background-color: var(--article-code-bg); color: var(--article-code-text); padding: 1.5em; overflow-x: auto; font-family: var(--font-code); font-size: 0.9em; line-height: 1.6; }
.article-content-standard.article-content-fusion .term-popup-trigger { border-bottom: 1px dashed var(--article-accent); cursor: help; font-weight: 500; }

/* Registration CTA Section */
.registration-cta-section { background: linear-gradient(110deg, var(--purple-gradient-start) 0%, var(--tech-blue) 100%); padding: 60px 0; margin-top: 60px; }
.registration-cta-section .cta-content { display: flex; align-items: center; gap: 30px; max-width: 1100px; margin: 0 auto; padding: 0 20px; color: #ffffff; }
.cta-icon { font-size: 3rem; flex-shrink: 0; line-height: 1; animation: rocketPulse 2.5s infinite ease-in-out; }
.cta-text { flex-grow: 1; }
.cta-text h3 { font-family: var(--font-primary); font-size: 1.6rem; font-weight: 600; margin: 0 0 10px 0; line-height: 1.3; color: #fff; }
.cta-text p { font-size: 1rem; opacity: 0.9; margin: 0; line-height: 1.6; color: #fff; }
.cta-action { flex-shrink: 0; text-align: center; }
.cta-action .btn { display: block; margin-bottom: 10px; min-width: 200px; background-color: #ffffff; color: var(--tech-blue); border: none; box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1); }
.cta-action .btn:hover { background-color: #f0f0f0; box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15); transform: translateY(-2px); }
.cta-action .cta-link { color: rgba(255, 255, 255, 0.8); font-size: 0.85rem; text-decoration: underline; transition: color 0.2s ease; }
.cta-action .cta-link:hover { color: #ffffff; }
@keyframes rocketPulse { 0%, 100% { transform: translateY(0) scale(1); } 50% { transform: translateY(-5px) scale(1.05); } }

/* Standard Post Navigation */
.post-navigation-standard { display: flex; justify-content: space-between; gap: 20px; margin-top: 60px; padding-top: 30px; border-top: 1px solid var(--article-border, var(--border-color)); }
.post-navigation-standard .nav-card { flex: 1 1 calc(50% - 10px); display: flex; align-items: center; gap: 15px; background-color: var(--article-nav-card-bg, var(--background-grey-alt)); padding: 15px; border-radius: 8px; text-decoration: none; color: var(--article-text, var(--text-dark)); border: 1px solid var(--article-border, var(--border-color)); box-shadow: 0 2px 8px var(--article-shadow-color, rgba(0,0,0,0.08)); transition: all 0.3s ease; }
.post-navigation-standard .nav-card:hover { border-color: var(--article-accent, var(--tech-blue)); box-shadow: 0 5px 15px rgba(var(--article-accent-rgb, var(--tech-blue-rgb)), 0.15); transform: translateY(-3px); }
.post-navigation-standard .nav-card img { flex-shrink: 0; width: 100px; height: 75px; object-fit: cover; border-radius: 6px; }
.post-navigation-standard .nav-content { flex-grow: 1; min-width: 0; }
.post-navigation-standard .nav-content span { display: block; font-size: 0.8rem; color: var(--article-text-muted, var(--text-grey)); margin-bottom: 5px; display: flex; align-items: center; gap: 5px; }
.post-navigation-standard .nav-content h4 { font-family: var(--article-heading-font, var(--font-primary)); font-size: 1rem; font-weight: 600; line-height: 1.4; margin: 0; color: var(--article-text, var(--text-dark)); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; text-overflow: ellipsis; transition: color 0.3s ease; }
.post-navigation-standard .nav-card:hover .nav-content h4 { color: var(--article-accent, var(--tech-blue)); }
.post-navigation-standard .prev-post .nav-content { text-align: left; }
.post-navigation-standard .next-post .nav-content { text-align: right; }
.post-navigation-standard .prev-post img { order: -1; }

/* Standard Floating Controls & Back to Top */
.floating-controls { position: fixed; bottom: 80px; right: 20px; display: flex; flex-direction: column; gap: 10px; z-index: 998; }
.floating-controls button { background-color: rgba(var(--article-bg-rgb, 255, 255, 255), 0.8); color: var(--article-text-secondary, #4A5568); border: 1px solid var(--article-border, var(--border-color)); width: 40px; height: 40px; border-radius: 50%; box-shadow: 0 2px 10px var(--article-shadow-color, rgba(0,0,0,0.08)); font-size: 1rem; cursor: pointer; display: flex; justify-content: center; align-items: center; backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px); transition: all 0.3s ease; }
.floating-controls button:hover { background-color: var(--article-bg, var(--background-light)); color: var(--article-accent, var(--tech-blue)); border-color: var(--article-accent, var(--tech-blue)); transform: scale(1.05); }
#toc-toggle-mobile { display: none; }
.back-to-top { position: fixed; bottom: 20px; right: 20px; background-color: var(--article-accent, var(--tech-blue)); color: white; width: 40px; height: 40px; border-radius: 50%; display: flex; justify-content: center; align-items: center; font-size: 1rem; text-decoration: none; box-shadow: 0 3px 10px rgba(var(--article-accent-rgb, 58, 111, 248), 0.4); z-index: 997; opacity: 0; visibility: hidden; transform: translateY(10px); transition: all 0.3s ease; }
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background-color: var(--article-accent-hover, var(--tech-blue-hover)); transform: scale(1.05); }

/* Toast Message */
.copy-toast { position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%); background-color: rgba(15, 23, 42, 0.9); color: white; padding: 10px 20px; border-radius: 20px; font-size: 0.9rem; z-index: 2000; opacity: 0; visibility: hidden; transition: all 0.3s ease; }
.copy-toast.show { opacity: 1; visibility: visible; bottom: 50px; }


/* =========================================== */
/* --- 12. General Responsiveness --- */
/* =========================================== */
@media (max-width: 1024px) { /* Tablet */
    .article-wrapper-standard { gap: 35px; }
    .article-sidebar-standard { display: none; } /* Hide sidebar */
    .article-content-standard { flex-basis: 100%; max-width: 100%; } /* Content full width */
    .floating-controls #toc-toggle-mobile { display: flex; }
}
@media (max-width: 992px) { /* General Tablet */
    html { font-size: 15px; }
    .section-title { font-size: 2rem; }
    .section-subtitle { font-size: 1rem; margin-bottom: 40px; }
    .main-nav { display: none; }
    #mobile-menu-toggle { display: block; }
    .hero-section { min-height: 60vh; }
    .slide-content h1 { font-size: 2.4rem; }
    .slide-content p { font-size: 1.1rem; }
    .pricing-grid, .pricing-grid-page { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
    .footer-content { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 30px; }
    .features-grid-container { grid-template-columns: repeat(2, 1fr); }
    .list-page-container { gap: 20px; }
    .list-page-container .sidebar-area { flex-basis: 250px; } /* Adjust list page sidebar */
    .list-page-container .article-card .card-image-link { flex-basis: 200px; }
    .list-page-container .article-card .card-image-link img { height: 133px; }
    .about-page .company-intro-section .intro-grid { gap: 30px; }
    .about-page .data-cards-grid { grid-template-columns: repeat(2, 1fr); gap: 25px; }
    .about-page .values-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .about-page .team-slider { gap: 20px; }
    .about-page .team-card { flex-basis: 280px; }
}

@media (max-width: 768px) { /* Mobile */
    :root { --header-height: 60px; }
    .section-padding { padding: 60px 0; }
    .section-title { font-size: 1.8rem; }
    .section-subtitle { margin-bottom: 30px; }
    .slide-content h1 { font-size: 2rem; }
    .slide-content p { font-size: 1rem; margin-bottom: 30px; }
    .hero-buttons { display: flex; flex-direction: column; align-items: center; gap: 15px; }
    .hero-buttons .btn { margin: 0; width: 80%; max-width: 300px; }
    .features-section .features-grid, .resources-section .resources-grid, .pricing-section .pricing-grid, .pricing-grid-page { grid-template-columns: 1fr; gap: 20px; }
    .download-button { display: block; width: 90%; max-width: 350px; margin: 15px auto; }
    .footer-content { grid-template-columns: 1fr; text-align: center; }
    .footer-column { margin-bottom: 30px; }
    .footer-column h4::after { left: 50%; transform: translateX(-50%); }
    .footer-column ul { padding-left: 0; }
    .contact-info, .social-links { justify-content: center; }
    .contact-info p { justify-content: center; }
    .features-grid-container { grid-template-columns: 1fr; gap: 20px; }
    .comparison-table-container { display: none; }
    .comparison-mobile-summary { display: block; }
    .list-page-container { flex-direction: column; }
    .sidebar-area { flex-basis: auto; order: 1; }
    .main-content-area { order: 2; }
    .list-header { flex-direction: column; align-items: flex-start; }
    .list-title { margin-right: 0; }
    .item-count { margin-left: 0; order: 1; }
    .filter-tabs { order: 2; justify-content: flex-start; }
    .article-card { flex-direction: column; }
    .card-image-link { flex-basis: auto; width: 100%; height: 200px; }
    .article-card .card-image-link img { height: 100%; }
    .article-card .excerpt { -webkit-line-clamp: 3; min-height: 66px; }
    .article-card .card-meta { margin-top: 15px; }
    .article-card .publish-date { margin-left: 0; flex-basis: 100%; margin-top: 5px; text-align: left; padding-left: 0; }
    .pagination .page-number, .pagination .ellipsis { display: none; }
    .pagination { justify-content: space-between; gap: 0; }
    .sidebar-widget { display: none; } /* Hide normal sidebar widgets */
    .sidebar-accordion-trigger { display: block; } /* Show accordion trigger */
    #sidebar-mobile-content .sidebar-widget { display: block; margin-bottom: 15px; padding: 20px; box-shadow: none; border: none; border-bottom: 1px solid var(--border-color); border-radius: 0; }
    #sidebar-mobile-content .sidebar-widget:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0;}
    body[data-theme="dark"] #sidebar-mobile-content .sidebar-widget { border-bottom-color: var(--border-color-dark); }
    .about-page .company-intro-section .intro-grid { flex-direction: column; }
    .about-page .company-intro-section .intro-text { order: 2; text-align: center; }
    .about-page .company-intro-section .intro-text h3::after { left: 50%; transform: translateX(-50%); }
    .about-page .company-intro-section .intro-text ul { display: inline-block; text-align: left; margin-left: auto; margin-right: auto; }
    .about-page .company-intro-section .intro-image { order: 1; margin-bottom: 30px; }
    .about-page .team-slider { flex-direction: column; align-items: center; overflow-x: hidden; scroll-snap-type: none; padding-bottom: 0; gap: 25px; }
    .about-page .team-card { flex-basis: auto; width: 90%; max-width: 350px; scroll-snap-align: none; }
    .about-page .data-cards-grid { grid-template-columns: 1fr; gap: 20px; }
    .about-page .values-grid { grid-template-columns: 1fr; gap: 25px; }
    .about-page .value-card, .about-page .value-card:nth-child(even) { transform: rotate(0) scale(1); }
    .about-page .value-card:hover { transform: translateY(-8px) scale(1); }
    .about-page .about-cta-section .cta-title { font-size: 1.7rem; }
    .about-page .about-cta-section .cta-buttons { flex-direction: column; align-items: center; gap: 15px; }
    .about-page .about-cta-section .cta-button { min-width: unset; width: 80%; max-width: 300px; }
    .article-wrapper-standard { flex-direction: column; gap: 0; padding-top: 30px; }
    .article-content-standard { flex-basis: auto; max-width: 100%; order: 1; }
    .article-sidebar-standard { flex-basis: auto; order: 2; margin-top: 40px; border-top: 1px solid var(--article-border, var(--border-color)); padding-top: 30px; }
    .sidebar-sticky-content { position: static; max-height: none; overflow-y: visible; padding-right: 0; }
    .floating-controls #toc-toggle-mobile { display: flex; }
    .registration-cta-section .cta-content { flex-direction: column; text-align: center; }
    .cta-action { margin-top: 20px; }
    .cta-action .btn { width: 80%; max-width: 300px; }
    .post-navigation-standard { flex-direction: column; gap: 15px; }
    .floating-controls { bottom: 70px; right: 15px; }
    .back-to-top { bottom: 15px; right: 15px; width: 36px; height: 36px; font-size: 0.9rem; }
}

@media (max-width: 480px) { /* Small Mobile */
    html { font-size: 14px; }
    .section-title { font-size: 1.6rem; }
    .btn-large { padding: 12px 25px; font-size: 1rem; }
    .list-page-container .filter-tab, .list-page-container .category-tab, .list-page-container .tag-link { padding: 4px 8px; font-size: 0.8rem; }
    .list-page-container .article-card .card-title { font-size: 1rem; }
    .list-page-container .article-card .excerpt { font-size: 0.8rem; }
    .list-page-container .pagination .page-link { padding: 6px 10px; font-size: 0.85rem; }
    .list-page-container .widget-title { font-size: 1rem; }
    .list-page-container .popular-item p { font-size: 0.85rem; }
    .about-page .company-intro-section .intro-text p, .about-page .company-intro-section .intro-text ul li { font-size: 0.9rem; }
    .about-page .member-name { font-size: 1.2rem; }
    .about-page .member-bio { font-size: 0.85rem; min-height: auto; }
    .about-page .data-value { font-size: 1.8rem; }
    .about-page .data-label { font-size: 0.9rem; }
    .about-page .value-title { font-size: 1.25rem; }
    .about-page .value-description { font-size: 0.9rem; }
    .about-page .about-cta-section .cta-title { font-size: 1.5rem; }
    .article-detail-standard .article-hero-standard { padding: 25px 0 20px 0; }
    .article-detail-standard .meta-info-standard { flex-direction: column; align-items: flex-start; }
    .article-detail-standard .meta-info-standard .separator { display: none; }
    .article-detail-standard .article-content-standard.article-content-fusion p { font-size: calc(var(--article-font-size, 1rem) * 0.92); }
    .registration-cta-section .cta-text h3 { font-size: 1.2rem; }
    .registration-cta-section .cta-text p { font-size: 0.9rem; }
    .post-navigation-standard .nav-card img { display: none; }
}

/* Fade-in Animation */
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
/* --- style.css --- */
/* ... (All existing styles) ... */

/* =========================================== */
/* --- 13. Footer QR Code Column Styles --- */
/* =========================================== */

/* Adjust grid template if needed, auto-fit usually handles it */
/* .footer-content { ... } */

.footer-column.qr-code {
    text-align: center; /* Center align content within this column */
}

.footer-column.qr-code h4 {
    /* Existing h4 styles likely sufficient, ensure text-align if needed */
    /* text-align: center; */ /* Uncomment if heading isn't centered */
}

.qr-image-wrapper {
    background-color: #ffffff; /* White background for QR code */
    padding: 8px; /* Padding around QR code */
    border-radius: 8px; /* Rounded corners */
    display: inline-block; /* Allow centering via text-align */
    margin-bottom: 10px; /* Space below image */
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.qr-image-wrapper img {
    display: block; /* Ensure image behaves as block */
    width: 120px; /* Fixed QR code size */
    height: 120px;
    max-width: 100%; /* Ensure responsiveness if container shrinks */
    height: auto; /* Maintain aspect ratio */
}

.qr-caption {
    font-size: 0.85rem;
    color: #bdc3c7; /* Match other footer text */
    line-height: 1.4;
    margin: 0; /* Reset paragraph margin */
}

/* Responsive adjustments for QR code column if needed */
@media (max-width: 768px) {
    .footer-column.qr-code {
        /* Ensures centering when stacked */
        grid-column: 1 / -1; /* Span full width if needed, often handled by auto-fit */
        text-align: center;
    }
    .footer-column.qr-code h4 {
         text-align: center; /* Explicitly center heading */
         /* Adjust heading margin if needed */
         margin-bottom: 15px;
    }
     .qr-image-wrapper {
         margin-left: auto;
         margin-right: auto;
     }
}

/* --- style.css --- */
/* ... (Existing base styles, header, footer components, etc.) ... */

/* --- Footer Column General Heading Style --- */
.footer-column h4 {
    color: var(--background-light);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 25px; /* Keep existing margin */
    position: relative;
    padding-bottom: 10px; /* Keep existing padding */
    /* Remove text-align: left; if it exists here */
    /* text-align: left; */ /* REMOVE or comment out */
}

/* --- Footer Column General Heading Underline --- */
.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0; /* Default left alignment for most columns */
    width: 40px;
    height: 2px;
    background-color: var(--tech-blue);
    /* Remove transform if it exists here */
}

/* --- Specific Styles for QR Code Column Heading --- */
.footer-column.qr-code h4 {
    text-align: center; /* <<< ADD THIS: Center the heading text */
}

/* --- Specific Underline Centering for QR Code Column Heading --- */
.footer-column.qr-code h4::after {
    left: 50%; /* <<< MODIFY THIS: Start underline from center */
    transform: translateX(-50%); /* <<< ADD THIS: Shift left by half its width */
}


/* --- Styles for QR Code Image and Caption (Keep as before) --- */
.footer-column.qr-code {
    text-align: center; /* Keep parent centered */
}
.qr-image-wrapper {
    background-color: #ffffff;
    padding: 8px;
    border-radius: 8px;
    display: inline-block;
    margin-bottom: 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}
.qr-image-wrapper img {
    display: block;
    width: 120px;
    height: 120px;
    max-width: 100%;
    height: auto;
}
.qr-caption {
    font-size: 0.85rem;
    color: #bdc3c7;
    line-height: 1.4;
    margin: 0;
}

/* ... (Rest of CSS and Responsive Rules) ... */

/* --- Responsive Adjustments for QR Code Column --- */
@media (max-width: 768px) {
    .footer-column.qr-code {
        grid-column: 1 / -1;
        text-align: center;
    }
    .footer-column.qr-code h4 {
         text-align: center; /* Already set, but good to be explicit */
         margin-bottom: 15px;
    }
     .footer-column.qr-code h4::after { /* Ensure centering is maintained */
         left: 50%;
         transform: translateX(-50%);
     }
     .qr-image-wrapper {
         margin-left: auto;
         margin-right: auto;
     }
}

/* --- style.css --- */
/* ... (All existing styles) ... */

/* =========================================== */
/* --- 14. Floating Right Sidebar Tools --- */
/* =========================================== */

.floating-sidebar-tools {
    position: fixed;
    right: 20px; /* Distance from right edge */
    bottom: 100px; /* Distance from bottom (adjust as needed, above footer) */
    z-index: 995; /* Below modals, above most content */
    background-color: rgba(var(--article-bg-rgb, 255, 255, 255), 0.8); /* Use theme variable with fallback */
    color: var(--article-text-secondary, #4A5568); /* Use theme variable */
    border-radius: 8px;
    box-shadow: 0 4px 15px var(--article-shadow-color, rgba(0,0,0,0.1));
    border: 1px solid var(--article-border, var(--border-color));
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Dark mode adjustments */
body[data-theme="dark"] .floating-sidebar-tools {
    background-color: rgba(var(--dark-mode-bg-rgb, 15, 23, 42), 0.8); /* Use dark variables */
    color: var(--text-dark-mode-secondary, #94a3b8);
    border-color: var(--border-color-dark, #334155);
    box-shadow: 0 4px 15px var(--dark-shadow, rgba(0,0,0,0.3));
}
/* Define dark mode background RGB variable if not already defined */
:root { --dark-mode-bg-rgb: 15, 23, 42; } /* Or update existing */

.floating-sidebar-tools ul {
    list-style: none;
    padding: 5px; /* Padding inside the sidebar */
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 5px; /* Small gap between items */
}

.floating-sidebar-tools li {
    position: relative; /* For tooltip positioning */
}

.sidebar-tool-button {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 44px; /* Button size */
    height: 44px;
    background-color: transparent; /* Button background */
    color: inherit; /* Inherit text color */
    border: none;
    border-radius: 6px;
    font-size: 1.2rem; /* Icon size */
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
    position: relative; /* For pseudo element tooltip */
}

.sidebar-tool-button:hover {
    background-color: rgba(var(--tech-blue-rgb), 0.1); /* Use theme accent */
    color: var(--tech-blue); /* Use theme accent */
    transform: scale(1.05);
}
body[data-theme="dark"] .sidebar-tool-button:hover {
    background-color: rgba(var(--neon-blue-rgb), 0.15);
    color: var(--neon-blue);
}

/* Tooltip Styles */
.sidebar-tool-button::before { /* Tooltip content */
    content: attr(data-tooltip);
    position: absolute;
    right: 100%; /* Position to the left */
    top: 50%;
    transform: translateY(-50%) translateX(-10px); /* Move left and center vertically */
    background-color: #333; /* Tooltip background */
    color: #fff; /* Tooltip text color */
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
    pointer-events: none; /* Prevent tooltip interaction */
    z-index: 10; /* Above other buttons */
}
.sidebar-tool-button:hover::before {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(-15px); /* Move further left on hover */
}


/* QR Code Popup Styles */
.qr-code-trigger-wrapper {
    position: relative; /* Container for absolute popup */
}
.sidebar-qr-popup {
    position: absolute;
    right: calc(100% + 15px); /* Position left of the trigger button */
    bottom: 0; /* Align bottom with trigger button */
    background-color: var(--background-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    box-shadow: -5px 5px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 180px; /* Width of the popup */
    z-index: 1000; /* Above sidebar */
    opacity: 0;
    visibility: hidden;
    transform: translateX(10px); /* Start slightly right */
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
    color: var(--text-dark); /* Ensure text color */
}
body[data-theme="dark"] .sidebar-qr-popup {
    background-color: #1e293b;
    border-color: var(--border-color-dark);
    box-shadow: -5px 5px 15px rgba(0, 0, 0, 0.3);
    color: var(--text-dark-mode);
}
.sidebar-qr-popup.visible { /* Class added by JS */
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}
.sidebar-qr-popup img {
    display: block;
    margin: 0 auto 10px auto; /* Center image */
    max-width: 100%;
    height: auto;
}
.sidebar-qr-popup span {
    display: block;
    font-size: 0.85rem;
    color: var(--text-grey); /* Use muted color */
    margin-top: 5px;
}
body[data-theme="dark"] .sidebar-qr-popup span { color: var(--text-dark-mode-secondary); }

.close-qr-popup {
    position: absolute;
    top: 5px;
    right: 5px;
    background: none;
    border: none;
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
    padding: 0 5px;
}
.close-qr-popup:hover {
    color: var(--text-dark);
}
body[data-theme="dark"] .close-qr-popup { color: #64748b; }
body[data-theme="dark"] .close-qr-popup:hover { color: var(--text-dark-mode-secondary); }


/* Back to Top Sidebar Button Visibility */
.back-to-top-sidebar {
    opacity: 0; /* Hidden by default */
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.back-to-top-sidebar.visible { /* Class added by JS */
    opacity: 1;
    visibility: visible;
}


/* Responsive Adjustments for Sidebar */
@media (max-width: 768px) {
    .floating-sidebar-tools {
        /* Optionally hide or reposition on very small screens */
        bottom: 15px; /* Move closer to bottom */
        right: 10px; /* Move closer to edge */
        /* Or hide completely: */
        /* display: none; */
    }
    /* Adjust tooltip position for mobile if needed */
     .sidebar-tool-button::before {
        /* Potentially position above instead of left */
        /* right: 50%; top: auto; bottom: 100%; transform: translateX(50%) translateY(-10px); */
    }
     .sidebar-tool-button:hover::before {
         /* Adjust hover transform accordingly */
         /* transform: translateX(50%) translateY(-15px); */
     }
     /* Adjust QR popup position for mobile */
     .sidebar-qr-popup {
         /* Maybe position above */
         bottom: calc(100% + 10px);
         right: 50%;
         transform: translateX(50%);
     }
     .sidebar-qr-popup.visible {
         transform: translateX(50%); /* Reset transform if needed */
     }
}
/* --- style.css --- */
/* ... (Existing base styles, header, footer, buttons, etc.) ... */

/* =========================================== */
/* --- 6. Index Page Specific Styles (Revised Hero) --- */
/* =========================================== */

/* --- HERO SECTION - Revised --- */
.hero-section-revised {
    position: relative;
    min-height: 100vh; /* Full viewport height */
    padding-top: var(--header-height); /* Offset for header */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden; /* Clip overflowing elements/effects */
    background-color: #121218; /* Dark base background */
    color: #ffffff; /* Default text color */
}

/* Background Layers */
.hero-bg-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1; /* Base layer */
}
.hero-bg-layer.bg-image {
    /* Replace with your image */
    background: url('https://via.placeholder.com/1920x1080/111111/222222?text=Blurred+Cityscape+or+Abstract') no-repeat center center/cover;
    opacity: 0.15; /* Very subtle */
    filter: blur(5px); /* Optional blur */
    z-index: 2;
}
.hero-bg-layer.bg-particles {
    z-index: 3; /* Particles above image */
    /* Particles.js will target #hero-particles */
}
.hero-bg-layer.bg-gradient-overlay {
    /* Optional overlay to darken edges or add color */
    background: radial-gradient(ellipse at center, rgba(18, 18, 24, 0) 50%, rgba(18, 18, 24, 0.8) 100%);
    z-index: 4;
}

/* Hero Content Container */
.hero-content-revised {
    position: relative;
    z-index: 10; /* Above all background layers */
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px; /* Space between visual and text */
    padding: 80px 0; /* Vertical padding */
}

/* Central Visual Placeholder & Example */
.hero-visual-placeholder {
    width: clamp(200px, 30vw, 350px); /* Responsive size */
    height: auto;
    aspect-ratio: 1 / 1; /* Maintain square or adjust as needed */
    margin-bottom: 20px; /* Space below visual */
    display: flex;
    justify-content: center;
    align-items: center;
    /* --- REPLACE content with your visual --- */
}
/* Example CSS Fingerprint Shape */
.fingerprint-shape {
    position: relative;
    width: 80%;
    height: 80%;
    display: flex;
    justify-content: center;
    align-items: center;
    filter: drop-shadow(0 0 15px rgba(var(--tech-blue-rgb), 0.4));
}
.fingerprint-shape .ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 2px solid rgba(var(--tech-blue-rgb), 0.3);
    border-radius: 50%;
    animation: pulseRing 4s ease-in-out infinite;
}
.fingerprint-shape .ring:nth-child(2) {
    width: 75%; height: 75%; border-width: 1.5px; animation-delay: -0.5s;
    border-color: rgba(var(--neon-blue-rgb), 0.4);
}
.fingerprint-shape .ring:nth-child(3) {
    width: 50%; height: 50%; border-width: 1px; animation-delay: -1s;
     border-color: rgba(var(--purple-gradient-start-rgb), 0.3); /* Needs purple rgb variable */
}
.core-glow {
    width: 20%;
    height: 20%;
    background: radial-gradient(ellipse at center, rgba(var(--neon-blue-rgb), 0.8) 0%, rgba(var(--neon-blue-rgb), 0) 70%);
    border-radius: 50%;
    animation: pulseGlow 3s ease-in-out infinite alternate;
}
/* Define Purple RGB variable if using */
:root { --purple-gradient-start-rgb: 108, 92, 231; }

@keyframes pulseRing {
    0%, 100% { transform: scale(0.95); opacity: 0.5; }
    50% { transform: scale(1.05); opacity: 0.8; }
}
@keyframes pulseGlow {
     from { transform: scale(0.8); opacity: 0.6; }
     to { transform: scale(1.1); opacity: 1; }
}


/* Text Content Styling */
.hero-text-content {
    max-width: 750px; /* Limit text width */
}
.hero-main-title {
    font-size: clamp(2.2rem, 6vw, 3.5rem); /* Large responsive title */
    font-weight: 700;
    color: #ffffff;
    line-height: 1.25;
    margin-bottom: 15px;
    text-shadow: 0 2px 5px rgba(0,0,0,0.3);
}
.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    color: var(--text-dark-mode-secondary, #bdc3c7); /* Use dark mode secondary text color */
    margin-bottom: 40px;
    line-height: 1.6;
    font-weight: 400;
}

/* Hero CTA Buttons */
.hero-cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap; /* Allow buttons to wrap */
}
.btn-hero-cta {
    padding: 15px 35px; /* Larger padding */
    font-size: 1.05rem; /* Slightly larger font */
    min-width: 200px;
}
.btn-gradient { /* Specific class for gradient button */
    background: linear-gradient(90deg, var(--purple-gradient-start) 0%, var(--tech-blue) 100%);
    border: none;
    color: #ffffff;
    box-shadow: 0 5px 15px rgba(var(--purple-gradient-start-rgb), 0.4);
    transition: all 0.3s ease;
}
.btn-gradient:hover {
    background: linear-gradient(90deg, #5a4ae2 0%, #285ee3 100%); /* Darker gradient */
    box-shadow: 0 8px 20px rgba(var(--purple-gradient-start-rgb), 0.5);
    transform: translateY(-3px) scale(1.03);
}
.btn-gradient i {
    margin-right: 8px;
    transition: transform 0.3s ease;
}
.btn-gradient:hover i {
     transform: rotate(-15deg); /* Fun icon effect */
}
.btn-outline-light { /* Secondary button style on dark background */
    background-color: transparent;
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.5);
    transition: all 0.3s ease;
}
.btn-outline-light:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: #ffffff;
    color: #ffffff;
    transform: translateY(-2px);
}
.btn-outline-light i {
    margin-left: 8px;
    transition: transform 0.3s ease;
}
.btn-outline-light:hover i {
    transform: translateX(4px);
}

/* Optional Decorative Elements */
.hero-decor {
    position: absolute;
    inset: 0;
    z-index: 5; /* Above overlays, below content */
    pointer-events: none; /* Non-interactive */
}
.decor-grid-lines {
    /* Example subtle grid */
    background-image:
        linear-gradient(to right, rgba(var(--neon-blue-rgb), 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(var(--neon-blue-rgb), 0.05) 1px, transparent 1px);
    background-size: 50px 50px; /* Grid size */
     opacity: 0.5;
}

/* --- Responsive Adjustments for Revised Hero --- */
@media (max-width: 768px) {
    .hero-section-revised { min-height: 80vh; } /* Adjust height */
    .hero-content-revised { padding: 60px 0; gap: 20px; }
    .hero-visual-placeholder { width: clamp(150px, 40vw, 250px); }
    .hero-cta-buttons { flex-direction: column; align-items: center; gap: 15px; }
    .btn-hero-cta { width: 80%; max-width: 300px; }
}

/* --- REST OF INDEX PAGE SECTIONS --- */
/* Styles for Intro, Features, Resources, Pricing, Download remain as before */
/* ... */
/* --- style.css --- */
/* ... (Existing base styles, header, footer, buttons, etc.) ... */

/* =========================================== */
/* --- 6. Index Page Specific Styles (Focus Core Hero) --- */
/* =========================================== */

/* --- HERO SECTION - Focus Core --- */
.hero-section-focus-core {
    position: relative;
    min-height: 90vh; /* Slightly less than full screen height */
    padding-top: calc(var(--header-height) + 80px); /* Header offset + top padding */
    padding-bottom: 80px; /* Bottom padding */
    display: flex;
    flex-direction: column; /* Stack visual and text vertically */
    align-items: center;
    justify-content: center; /* Center content vertically */
    text-align: center;
    overflow: hidden;
    background-color: #F5F7FA; /* Clean light grey/blue background */
    color: var(--text-dark); /* Default dark text */
}
body[data-theme="dark"] .hero-section-focus-core {
     background-color: #0B1120; /* Use dark theme's very dark blue */
     color: var(--text-dark-mode);
}

/* Center Focus Light Effect */
.hero-focus-light {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120vmax; /* Large diameter relative to viewport */
    height: 120vmax;
    transform: translate(-50%, -50%);
    background: radial-gradient(ellipse at center,
        rgba(var(--tech-blue-rgb), 0.08) 0%, /* Very subtle tech blue center */
        rgba(var(--tech-blue-rgb), 0) 60% /* Fade out */
    );
    border-radius: 50%;
    z-index: 1; /* Behind content and visual */
    pointer-events: none;
    opacity: 0.7;
    transition: background 0.3s ease;
}
body[data-theme="dark"] .hero-focus-light {
     background: radial-gradient(ellipse at center,
        rgba(var(--neon-blue-rgb), 0.1) 0%,
        rgba(var(--neon-blue-rgb), 0) 65%
    );
     opacity: 0.5;
}


/* Core Visual Element */
.hero-core-visual {
    width: clamp(100px, 15vw, 180px); /* Adjust size */
    height: auto;
    aspect-ratio: 1 / 1;
    margin-bottom: 40px; /* Space below visual */
    z-index: 2; /* Above focus light */
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: slowSpin 30s linear infinite; /* Subtle rotation */
}
/* Example CSS Shield - REPLACE WITH YOUR VISUAL */
.visual-shield { position: relative; width: 100%; height: 100%; }
.shield-layer {
    position: absolute;
    inset: 0;
    border-radius: 20% 20% 50% 50% / 30% 30% 40% 40%; /* Abstract shield-like */
    border: 1px solid rgba(var(--tech-blue-rgb), 0.2);
    background: linear-gradient(145deg, rgba(255,255,255,0.05), rgba(var(--tech-blue-rgb), 0.05));
    opacity: 0.5;
    transition: all 0.3s ease;
    backdrop-filter: blur(2px);
}
.shield-layer-2 { transform: scale(0.8) rotate(10deg); opacity: 0.7; border-color: rgba(var(--tech-blue-rgb), 0.3); animation-delay: -2s;}
.shield-layer-3 { transform: scale(0.6) rotate(-5deg); opacity: 0.9; border-color: rgba(var(--tech-blue-rgb), 0.4); animation-delay: -4s;}
.shield-inner-glow {
    position: absolute;
    width: 50%; height: 50%; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    background: radial-gradient(ellipse at center, rgba(var(--tech-blue-rgb), 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulseGlow 4s ease-in-out infinite alternate; /* Reuse glow */
}
body[data-theme="dark"] .shield-layer {
    border-color: rgba(var(--neon-blue-rgb), 0.3);
    background: linear-gradient(145deg, rgba(0,0,0,0.1), rgba(var(--neon-blue-rgb), 0.1));
}
body[data-theme="dark"] .shield-layer-2 { border-color: rgba(var(--neon-blue-rgb), 0.4); }
body[data-theme="dark"] .shield-layer-3 { border-color: rgba(var(--neon-blue-rgb), 0.5); }
body[data-theme="dark"] .shield-inner-glow { background: radial-gradient(ellipse at center, rgba(var(--neon-blue-rgb), 0.4) 0%, transparent 70%); }

@keyframes slowSpin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
/* @keyframes pulseGlow defined in previous example - keep if needed */


/* Hero Content Container */
.hero-content-focus-core {
    position: relative;
    z-index: 3; /* Above visual */
    max-width: 800px;
}
.hero-text-content-focus-core {
    /* Add fade-in animation */
    opacity: 0;
    transform: translateY(20px);
    animation: textFadeUp 0.8s 0.2s ease-out forwards;
}

@keyframes textFadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-main-title-focus-core {
    font-family: var(--font-primary);
    /* ADJUST font-size clamp() values */
    font-size: clamp(2.0rem, 6vw, 3.2rem); /* REDUCED max size (e.g., from 4.2rem) and potentially VW factor */
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.25; /* Keep line height tight */
    letter-spacing: -0.5px;
    margin-bottom: 20px;
    transition: color 0.3s ease;
    /* Animation styles remain */
    opacity: 0;
    transform: translateY(20px);
    animation: textFadeUp 0.8s 0.2s ease-out forwards;
}
body[data-theme="dark"] .hero-main-title-focus-core {
    color: var(--text-dark-mode);
     /* Dark mode might use same clamp, or could be slightly different if needed */
    /* font-size: clamp(2.0rem, 6vw, 3.2rem); */
}


.hero-subtitle-focus-core {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--text-grey);
    margin-bottom: 40px;
    line-height: 1.7;
    font-weight: 400;
    max-width: 550px; /* Keep subtitle concise */
    margin-left: auto;
    margin-right: auto;
    transition: color 0.3s ease;
}
body[data-theme="dark"] .hero-subtitle-focus-core { color: var(--text-dark-mode-secondary); }

/* Hero CTA Buttons */
.hero-cta-buttons-focus-core {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}
.btn-hero-cta-focus-core { /* Base style for hero buttons */
    padding: 15px 35px;
    font-size: 1rem;
    min-width: 190px;
    border-radius: 8px;
    font-weight: 600;
}
/* Primary button uses btn-primary */
.btn-hero-cta-focus-core.btn-primary i { margin-right: 8px; }
.btn-hero-cta-focus-core.btn-primary:hover { /* Enhance hover */
    box-shadow: 0 8px 20px rgba(var(--tech-blue-rgb), 0.35);
    transform: translateY(-4px);
}
/* Secondary Link Style */
.link-subtle-focus-core {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 15px 0; /* Vertical padding for click area */
    position: relative;
    transition: color 0.3s ease;
}
body[data-theme="dark"] .link-subtle-focus-core { color: var(--text-dark-mode-secondary); }
.link-subtle-focus-core::after { /* Underline animation */
    content: '';
    position: absolute;
    left: 0;
    bottom: 10px; /* Adjust vertical position */
    width: 100%;
    height: 1.5px; /* Thinner underline */
    background-color: var(--tech-blue);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1); /* Smooth ease */
}
body[data-theme="dark"] .link-subtle-focus-core::after { background-color: var(--neon-blue); }
.link-subtle-focus-core:hover {
    color: var(--tech-blue);
}
body[data-theme="dark"] .link-subtle-focus-core:hover { color: var(--neon-blue); }
.link-subtle-focus-core:hover::after {
    transform: scaleX(1);
}
.link-subtle-focus-core i {
    font-size: 0.8em;
    transition: transform 0.3s ease;
}
.link-subtle-focus-core:hover i {
    transform: translateX(5px);
}

/* --- Responsive Adjustments for Focus Core Hero --- */
@media (max-width: 768px) {
    .hero-section-focus-core { min-height: 75vh; padding-top: calc(var(--header-height) + 40px); padding-bottom: 60px;}
    .hero-core-visual { width: clamp(80px, 25vw, 120px); margin-bottom: 30px; }
    .hero-cta-buttons-focus-core { flex-direction: column; align-items: center; gap: 18px; }
    .btn-hero-cta-focus-core { width: 80%; max-width: 320px; }
    .link-subtle-focus-core { padding: 10px 0; }
}

/* --- REST OF INDEX PAGE SECTIONS --- */
/* Styles for Intro, Features, Resources, Pricing, Download remain as before */
/* ... */
/* --- style.css --- */
/* ... (All existing styles) ... */

/* =========================================== */
/* --- 15. Event Modal & Trigger (Revised) --- */
/* =========================================== */

/* Variables specifically for this modal */
:root {
    --event-overlay-bg: rgba(15, 23, 42, 0.8); /* Darker overlay */
    --event-modal-bg-light: #ffffff;
    --event-modal-bg-dark: #1a273d; /* Slightly different dark */
    --event-modal-shadow: 0 15px 50px rgba(0, 0, 0, 0.25);
    --event-text-light: #2D3748;
    --event-text-dark-theme: #E5E7EB;
    --event-accent-light: var(--tech-blue);
    --event-accent-dark: var(--neon-blue);
    --event-trigger-bg-gradient: linear-gradient(135deg, #e11d48, #db2777); /* Example: Pink/Red gradient */
    --event-trigger-shadow: rgba(225, 29, 72, 0.5);
}

/* Overlay */
.event-modal-overlay {
    position: fixed;
    inset: 0;
    background-color: var(--event-overlay-bg);
    z-index: 1050; /* Ensure high z-index */
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 15px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none; /* Prevent interaction when hidden */
    transition: opacity 0.3s ease, visibility 0s linear 0.3s; /* Rely on opacity for transition */
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.event-modal-overlay.active { /* State class added by JS */
    opacity: 1;
    visibility: visible;
    pointer-events: auto; /* Allow interaction when visible */
    transition-delay: 0s;
}

/* Modal Window */
.event-modal {
    position: relative;
    background-color: var(--event-modal-bg-light);
    color: var(--event-text-light);
    border-radius: 12px;
    box-shadow: var(--event-modal-shadow);
    max-width: 750px;
    width: 95%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.95); /* Start slightly smaller */
    opacity: 0;
    transition: transform 0.3s ease-out, opacity 0.3s ease-out,
                background-color 0.3s ease, color 0.3s ease; /* Theme transition */
    /* Ensure visibility doesn't interfere if opacity is 0 */
    visibility: hidden;
}
.event-modal-overlay.active .event-modal {
    transform: scale(1);
    opacity: 1;
    visibility: visible; /* Make visible with overlay */
}
/* Dark Mode */
body[data-theme="dark"] .event-modal {
    background-color: var(--event-modal-bg-dark);
    color: var(--event-text-dark-theme);
}

/* Close Button */
.event-modal-close-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0,0,0,0.1);
    color: #999;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 1.6rem;
    font-weight: 300;
    line-height: 1;
    cursor: pointer;
    z-index: 10;
    display: flex; justify-content: center; align-items: center;
    transition: all 0.2s ease;
}
body[data-theme="dark"] .event-modal-close-btn { background: rgba(255,255,255,0.1); color: #aaa; }
.event-modal-close-btn:hover { background: rgba(0,0,0,0.2); color: #333; transform: rotate(90deg); }
body[data-theme="dark"] .event-modal-close-btn:hover { background: rgba(255,255,255,0.2); color: #eee; }

/* Modal Body Layout */
.event-modal-body {
    display: flex;
    flex-direction: column; /* Stack by default */
    overflow-y: auto; /* Scroll internal body if needed */
}
@media (min-width: 640px) { .event-modal-body { flex-direction: row; } }

.event-image-area {
    flex: 1 1 auto;
    background-color: #f0f0f0;
    display: flex; justify-content: center; align-items: center;
    overflow: hidden;
    min-height: 150px; /* Ensure some height */
}
body[data-theme="dark"] .event-image-area { background-color: #2d3748; }
.event-image-area img { display: block; width: 100%; height: 100%; object-fit: cover; }
@media (min-width: 640px) { .event-image-area { flex-basis: 55%; max-height: 400px; /* Limit height on desktop */ } }

.event-text-area {
    padding: 25px 30px;
    display: flex; flex-direction: column;
}
@media (min-width: 640px) { .event-text-area { flex-basis: 45%; padding: 30px 35px; } }

.event-title { font-family: var(--font-primary); font-size: 1.6rem; font-weight: 700; color: var(--event-accent-light); line-height: 1.3; margin: 0 0 10px 0; }
body[data-theme="dark"] .event-title { color: var(--event-accent-dark); }
.event-description { font-size: 0.95rem; color: var(--text-grey); line-height: 1.6; margin: 0 0 20px 0; flex-grow: 1; }
body[data-theme="dark"] .event-description { color: var(--text-dark-mode-secondary); }

/* Countdown Timer */
.event-countdown { margin: 0 0 25px 0; text-align: center; font-family: var(--font-primary); color: var(--text-grey); font-size: 0.85rem; }
body[data-theme="dark"] .event-countdown { color: var(--text-dark-mode-secondary); }
.event-countdown span:not(.timer-segment) { margin-right: 5px; }
.timer-segment { font-weight: 600; color: var(--event-text-light); margin: 0 3px; background: rgba(0,0,0,0.03); padding: 2px 5px; border-radius: 3px; }
body[data-theme="dark"] .timer-segment { color: var(--event-text-dark-theme); background: rgba(255,255,255,0.05); }

/* CTA Button */
.event-cta.btn { width: 100%; padding: 12px 20px; font-size: 1rem; margin-top: auto; }


/* --- Floating Event Trigger --- */
.event-float-trigger {
    position: fixed;
    bottom: 25px;
    left: 20px;
    width: 50px;
    height: 50px;
    background: var(--event-trigger-bg-gradient);
    color: white;
    border: none;
    border-radius: 50%;
    box-shadow: 0 4px 12px var(--event-trigger-shadow);
    font-size: 1.3rem;
    display: flex; justify-content: center; align-items: center;
    cursor: pointer;
    z-index: 997;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.5) rotate(-90deg); /* Start smaller and rotated */
    transition: opacity 0.3s ease, visibility 0s linear 0.3s, transform 0.3s ease-out;
    animation: floatUpDownSimple 3s infinite ease-in-out; /* Simpler float */
    animation-play-state: paused; /* Start paused */
}
.event-float-trigger.visible {
    opacity: 1;
    visibility: visible;
    transform: scale(1) rotate(0deg);
    transition-delay: 0s, 0s, 0s;
    animation-play-state: running; /* Start animation when visible */
}
.event-float-trigger:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 18px var(--event-trigger-shadow);
    animation-play-state: paused;
}

@keyframes floatUpDownSimple {
    0%, 100% { transform: translateY(0) scale(1) rotate(0deg); }
    50% { transform: translateY(-6px) scale(1.03) rotate(0deg); }
}

/* Responsive */
@media (max-width: 768px) {
    .event-float-trigger { bottom: 15px; left: 15px; width: 45px; height: 45px; font-size: 1.2rem;}
}