/* ============================================
   Proxifier - Professional Proxy Client
   Shared Stylesheet v1.0
   ============================================ */

/* ===== CSS Reset & Variables ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1E40AF;
    --primary-dark: #1E3A8A;
    --primary-light: #3B82F6;
    --accent: #06B6D4;
    --accent-light: #22D3EE;
    --dark: #0F172A;
    --darker: #020617;
    --gray-dark: #334155;
    --gray: #64748B;
    --gray-light: #94A3B8;
    --border: #E2E8F0;
    --light: #F8FAFC;
    --white: #FFFFFF;
    --success: #10B981;
    --danger: #EF4444;

    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow: 0 4px 12px rgba(0,0,0,.10);
    --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
    --shadow-xl: 0 20px 50px rgba(0,0,0,.15);

    --transition: .3s ease;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font);
    color: var(--dark);
    background: var(--light);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.1rem; }

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover { color: var(--primary-dark); }

img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius);
    font-size: .95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    font-family: var(--font);
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(30,64,175,.35);
}
.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30,64,175,.45);
    color: var(--white);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary);
    border: 2px solid var(--primary);
}
.btn-secondary:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.05rem;
}

.btn-sm {
    padding: 8px 16px;
    font-size: .85rem;
}

.btn:active { transform: translateY(0); }

/* ===== Header ===== */
#mainHeader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all var(--transition);
}
#mainHeader.header-scrolled {
    box-shadow: var(--shadow);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
	width: 120px;
    /* display: flex; */
    align-items: center;
    gap: 10px;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
}
.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-links a {
    font-size: .92rem;
    font-weight: 500;
    color: var(--gray-dark);
    padding: 6px 0;
    position: relative;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a:hover,
.nav-links a.active { color: var(--primary); }

.nav-cta {
    padding: 10px 20px;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius);
    font-weight: 600;
    font-size: .88rem;
    transition: all var(--transition);
}
.nav-cta:hover {
    background: var(--primary-dark);
    color: var(--white);
    transform: translateY(-1px);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--dark);
    cursor: pointer;
    padding: 8px;
}

/* ===== Hero Section ===== */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #EFF6FF 0%, #F0F9FF 50%, #ECFEFF 100%);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(30,64,175,.06) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(6,182,212,.06) 0%, transparent 50%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50px;
    font-size: .82rem;
    font-weight: 600;
    margin-bottom: 20px;
}
.hero-badge i { font-size: .9rem; }

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    color: var(--dark);
}
.hero-title span {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.05rem;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 28px;
    max-width: 520px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 32px;
}
.stat-item { text-align: center; }
.stat-value {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
}
.stat-label {
    font-size: .8rem;
    color: var(--gray);
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Hero Visual */
.hero-visual { position: relative; }
.software-preview {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border);
}
.preview-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--dark);
    color: var(--white);
}
.preview-header h4 {
    color: var(--white);
    font-size: .95rem;
    flex: 1;
}
.version-badge {
    background: var(--success);
    color: var(--white);
    font-size: .72rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 50px;
}
.preview-body { padding: 20px; }
.preview-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}
.preview-item:last-child { border-bottom: none; }
.preview-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #EFF6FF, #F0F9FF);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: .95rem;
}
.preview-label {
    flex: 1;
    font-size: .88rem;
    font-weight: 500;
    color: var(--dark);
}
.preview-value {
    font-size: .8rem;
    color: var(--gray);
}

/* ===== Sections ===== */
section { padding: 80px 0; }

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    background: rgba(30,64,175,.08);
    color: var(--primary);
    border-radius: 50px;
    font-size: .8rem;
    font-weight: 600;
    margin-bottom: 16px;
}
.section-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin-bottom: 14px;
}
.section-subtitle {
    font-size: 1rem;
    color: var(--gray);
    line-height: 1.7;
}

/* ===== Feature Cards ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}
.feature-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.4rem;
    margin-bottom: 20px;
}
.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}
.feature-card p {
    font-size: .9rem;
    color: var(--gray);
    line-height: 1.7;
}

/* ===== Highlights ===== */
.highlights-section { background: var(--white); }
.highlights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.highlight-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--light);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}
.highlight-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.highlight-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    margin: 0 auto 20px;
}
.highlight-item h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}
.highlight-item p {
    font-size: .88rem;
    color: var(--gray);
    line-height: 1.7;
}

/* ===== Comparison Table ===== */
.comparison-table {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}
.comparison-row {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
}
.comparison-header {
    background: var(--primary);
}
.comparison-header .comparison-item {
    color: var(--white);
    font-weight: 700;
}
.comparison-item {
    padding: 16px 20px;
    font-size: .9rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
}
.comparison-item:not(:last-child) {
    border-right: 1px solid var(--border);
}
.comparison-row:not(.comparison-header):nth-child(even) {
    background: var(--light);
}
.comparison-item.highlight {
    color: var(--success);
    font-weight: 600;
}
.comparison-item .fa-check { color: var(--success); margin-right: 6px; }
.comparison-item .fa-times { color: var(--danger); margin-right: 6px; }

/* ===== Platforms ===== */
.platforms-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.platform-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px 20px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.platform-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--primary-light);
}
.platform-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #EFF6FF, #F0F9FF);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.8rem;
    margin: 0 auto 16px;
}
.platform-card h4 { font-size: 1.05rem; margin-bottom: 8px; }
.platform-card p { font-size: .82rem; color: var(--gray); }

/* ===== Install Steps ===== */
.install-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.step-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    text-align: center;
    border: 1px solid var(--border);
    position: relative;
}
.step-number {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    margin: 0 auto 16px;
}
.step-card h4 { font-size: 1rem; margin-bottom: 8px; }
.step-card p { font-size: .85rem; color: var(--gray); line-height: 1.6; }

/* ===== CTA Section ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 80px 0;
    text-align: center;
    color: var(--white);
}
.cta-title {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    color: var(--white);
    margin-bottom: 14px;
}
.cta-description {
    font-size: 1rem;
    color: rgba(255,255,255,.8);
    margin-bottom: 30px;
}
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    background: var(--white);
    color: var(--primary);
    border-radius: var(--radius);
    font-size: 1.05rem;
    font-weight: 700;
    transition: all var(--transition);
}
.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,.2);
    color: var(--primary-dark);
}

/* ===== Download Section ===== */
.download-section { background: var(--white); }
.download-card {
    max-width: 640px;
    margin: 0 auto;
    background: var(--light);
    border-radius: var(--radius-xl);
    padding: 40px;
    text-align: center;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}
.download-version {
    display: inline-block;
    background: var(--success);
    color: var(--white);
    font-size: .78rem;
    font-weight: 700;
    padding: 4px 14px;
    border-radius: 50px;
    margin-bottom: 20px;
}
.download-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--dark);
}
.download-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 28px;
}
.download-meta span {
    font-size: .88rem;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 6px;
}
.download-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 20px; }

.open-btn, .download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius);
    font-weight: 600;
    font-size: .95rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    font-family: var(--font);
}
.open-btn:hover, .download-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.security-badge {
    display: flex;
    justify-content: center;
    gap: 20px;
    font-size: .78rem;
    color: var(--gray);
}
.security-badge span { display: flex; align-items: center; gap: 5px; }

/* ===== Testimonials ===== */
.testimonials { background: var(--light); }
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--border);
}
.testimonial-text {
    font-size: .92rem;
    color: var(--gray-dark);
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}
.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}
.author-avatar {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 1rem;
}
.author-info h5 { font-size: .92rem; }
.author-info p { font-size: .78rem; color: var(--gray); }

/* ===== Footer ===== */
footer {
    background: var(--dark);
    color: rgba(255,255,255,.7);
    padding: 60px 0 30px;
}
.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 16px;
}
.footer-description {
    font-size: .88rem;
    line-height: 1.7;
    color: rgba(255,255,255,.5);
}
.footer-col h4 {
    color: var(--white);
    font-size: .95rem;
    margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
    color: rgba(255,255,255,.55);
    font-size: .88rem;
    transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--white); }
.copyright {
    text-align: center;
    padding: 24px 20px 0;
    margin-top: 40px;
    border-top: 1px solid rgba(255,255,255,.08);
    font-size: .82rem;
    color: rgba(255,255,255,.35);
}

/* ===== GoTop Button ===== */
#goTopBtn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 46px;
    height: 46px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    z-index: 999;
    box-shadow: var(--shadow);
}
#goTopBtn.show { opacity: 1; visibility: visible; }
#goTopBtn:hover { background: var(--primary-dark); transform: translateY(-3px); }

/* ===== Modal ===== */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.6);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
}
.modal.show { display: flex; }
.modal-content {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 36px;
    max-width: 700px;
    width: 100%;
    position: relative;
    box-shadow: var(--shadow-xl);
}
.close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    background: var(--light);
    border: none;
    border-radius: 50%;
    font-size: 1.3rem;
    cursor: pointer;
    color: var(--gray-dark);
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}
.close-btn:hover { background: var(--border); }

/* Modal - Progress Phase */
.download-icon-animate {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
}
.download-circle {
    position: absolute;
    inset: 0;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.download-icon {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--primary);
}
.preparing-title {
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--dark);
}
.progress-bar-wrap {
    width: 100%;
    height: 10px;
    background: var(--border);
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 10px;
}
.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary), var(--success));
    border-radius: 5px;
    transition: width 0.1s ease;
}
.progress-percent {
    text-align: center;
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 6px;
}
.progress-status {
    text-align: center;
    font-size: 15px;
    color: var(--gray);
    margin-bottom: 16px;
}
.progress-tips {
    text-align: center;
    font-size: 13px;
    color: var(--gray-light);
}
.progress-tips strong { color: var(--danger); }

/* Modal - Ready Phase */
.ready-header { text-align: center; margin-bottom: 20px; }
.ready-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--success);
    color: var(--white);
    font-size: 24px;
    border-radius: 50%;
    margin-bottom: 10px;
}
.ready-title { font-size: 20px; font-weight: 700; color: var(--dark); margin: 0 0 6px; }
.ready-sub { font-size: 14px; color: var(--gray); margin: 0; }
.security-note {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 16px;
    font-size: 13px;
    color: var(--success);
}
.security-note span { display: flex; align-items: center; gap: 5px; }

/* Modal - Image Grid */
.image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 16px;
}
.image-card { text-align: center; }
.image-card img {
    width: 160px;
    height: 160px;
    object-fit: contain;
    border-radius: var(--radius);
    background: var(--light);
    margin: 0 auto 10px;
}
.image-caption { font-size: .85rem; }
.image-caption strong { display: block; color: var(--dark); font-size: .9rem; }
.image-caption span, .image-caption a { color: var(--gray); }
.image-caption a:hover { color: var(--primary); }
.scan-hint {
    text-align: center;
    color: var(--gray-light);
    font-size: 13px;
    margin: 12px 0 8px;
}
.copy-link-wrap { display: flex; justify-content: center; gap: 10px; margin-top: 4px; }
.copy-link-btn {
    padding: 7px 14px;
    font-size: 13px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--light);
    color: var(--gray-dark);
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font);
}
.copy-link-btn:hover { background: var(--border); }

/* ===== Scroll Animations ===== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ===== Accordion ===== */
.accordion-item {
    background: var(--white);
    border-radius: var(--radius);
    margin-bottom: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
}
.accordion-header {
    width: 100%;
    padding: 18px 24px;
    background: none;
    border: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-size: .95rem;
    font-weight: 600;
    color: var(--dark);
    font-family: var(--font);
    text-align: left;
}
.accordion-header:hover { background: var(--light); }
.accordion-header i {
    color: var(--primary);
    transition: transform var(--transition);
}
.accordion-item.active .accordion-header i { transform: rotate(180deg); }
.accordion-body {
    padding: 0 24px 18px;
    font-size: .9rem;
    color: var(--gray);
    line-height: 1.7;
    display: none;
}
.accordion-item.active .accordion-body { display: block; }

/* ===== News Grid ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.news-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.news-thumb {
    height: 180px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2.5rem;
}
.news-body { padding: 24px; }
.news-date {
    font-size: .78rem;
    color: var(--gray);
    margin-bottom: 8px;
}
.news-card h3 {
    font-size: 1rem;
    margin-bottom: 10px;
    line-height: 1.5;
}
.news-card h3 a { color: var(--dark); }
.news-card h3 a:hover { color: var(--primary); }
.news-excerpt {
    font-size: .85rem;
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: 16px;
}
.news-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(30,64,175,.08);
    color: var(--primary);
    border-radius: 50px;
    font-size: .75rem;
    font-weight: 600;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    padding: 120px 0 40px;
    background: linear-gradient(135deg, #EFF6FF 0%, #F0F9FF 100%);
}
.breadcrumb-content { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.breadcrumb h1 {
    font-size: 2rem;
    margin-bottom: 8px;
}
.breadcrumb p { color: var(--gray); font-size: .95rem; }
.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: .85rem;
    color: var(--gray);
    margin-top: 12px;
}
.breadcrumb-nav a { color: var(--primary); }
.breadcrumb-nav a:hover { text-decoration: underline; }

/* ===== Page Content Sections ===== */
.page-section {
    padding: 50px 0;
    border-bottom: 1px solid var(--border);
}
.page-section:last-child { border-bottom: none; }
.page-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.page-section h2 i { color: var(--primary); font-size: 1.2rem; }

/* ===== Tabs ===== */
.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border);
}
.tab-btn {
    padding: 10px 20px;
    background: none;
    border: none;
    font-size: .9rem;
    font-weight: 500;
    color: var(--gray);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition);
    font-family: var(--font);
}
.tab-btn:hover { color: var(--primary); }
.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 600;
}
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ===== Code Block ===== */
.code-block {
    background: var(--dark);
    border-radius: var(--radius);
    padding: 20px;
    margin: 16px 0;
    overflow-x: auto;
}
.code-block code {
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: .85rem;
    color: #e2e8f0;
    line-height: 1.6;
    white-space: pre;
}
.code-block .keyword { color: #C678DD; }
.code-block .string { color: #98C379; }
.code-block .comment { color: #5C6370; }
.code-block .value { color: #E5C07B; }
.code-block .tag { color: #E06C75; }

/* ===== FAQ Grid ===== */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

/* ===== Filter Bar ===== */
.filter-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}
.filter-btn {
    padding: 8px 18px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: .85rem;
    font-weight: 500;
    cursor: pointer;
    color: var(--gray-dark);
    transition: all var(--transition);
    font-family: var(--font);
}
.filter-btn:hover, .filter-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* ===== Newsletter ===== */
.newsletter-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 80px 0;
}
.newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}
.newsletter-icon {
    width: 72px;
    height: 72px;
    background: rgba(255,255,255,.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.8rem;
    margin: 0 auto 24px;
}
.newsletter-content h2 {
    color: var(--white);
    font-size: 1.8rem;
    margin-bottom: 12px;
}
.newsletter-content p {
    color: rgba(255,255,255,.8);
    font-size: 1rem;
    margin-bottom: 24px;
    line-height: 1.7;
}
.newsletter-form {
    display: flex;
    gap: 12px;
    max-width: 480px;
    margin: 0 auto 16px;
}
.newsletter-form input {
    flex: 1;
    padding: 14px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: .95rem;
    font-family: var(--font);
}
.newsletter-form .btn {
    white-space: nowrap;
}
.newsletter-note {
    font-size: .8rem;
    color: rgba(255,255,255,.6);
}
.newsletter-note i {
    margin-right: 6px;
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
    padding-bottom: 20px;
}
.pagination-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: .9rem;
    font-weight: 500;
    color: var(--gray-dark);
    transition: all var(--transition);
}
.pagination-btn:hover:not(.active):not(.disabled) {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}
.pagination-btn.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}
.pagination-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
.pagination-prev, .pagination-next {
    width: auto;
    padding: 0 16px;
}

/* ===== Featured Article ===== */
.featured-article {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 0;
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}
.featured-thumb {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 40px;
    min-height: 320px;
}
.featured-icon {
    width: 100px;
    height: 100px;
    background: rgba(255,255,255,.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2.8rem;
    margin-bottom: 20px;
}
.featured-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    padding: 6px 14px;
    background: rgba(255,255,255,.2);
    color: var(--white);
    border-radius: 50px;
    font-size: .8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}
.featured-content {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.featured-content h2 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    line-height: 1.4;
}
.featured-content .news-excerpt {
    font-size: .95rem;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 20px;
}
.featured-content .btn {
    align-self: flex-start;
    margin-bottom: 16px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { display: none; }
    .footer-content { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-menu-btn { display: block; }
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        padding: 20px;
        box-shadow: var(--shadow);
        gap: 16px;
    }
    .features-grid,
    .highlights-grid,
    .testimonials-grid,
    .news-grid,
    .faq-grid { grid-template-columns: 1fr; }
    .platforms-grid,
    .install-steps { grid-template-columns: repeat(2, 1fr); }
    .comparison-row { grid-template-columns: 1fr; }
    .comparison-item { border-right: none; border-bottom: 1px solid var(--border); padding: 12px 16px; }
    .hero-stats { gap: 20px; }
    .download-meta { flex-direction: column; gap: 10px; }
    .image-grid { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr; }
    .featured-article { grid-template-columns: 1fr; }
    .featured-thumb { min-height: 200px; }
    .newsletter-form { flex-direction: column; }
    section { padding: 60px 0; }
}

@media (max-width: 480px) {
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.4rem; }
    .container { padding: 0 16px; }
    .hero { padding: 110px 0 60px; }
    .hero-buttons { flex-direction: column; }
    .platforms-grid,
    .install-steps { grid-template-columns: 1fr; }
    .cta-button { padding: 14px 28px; font-size: .95rem; }
    .modal-content { padding: 24px 20px; }
}

/* ===== Utility ===== */
.text-center { text-align: center; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }
.mt-20 { margin-top: 20px; }