/* ============================================================
   SemKO Landing Page - Dark Theme Styles
   Knight Online inspired dark gaming aesthetic
   ============================================================ */

/* ---------- Reset & Base ---------- */
:root {
    --sk-bg-dark: #0b0f19;
    --sk-bg-card: #131824;
    --sk-bg-card-hover: #1a2035;
    --sk-primary: #7c3aed;
    --sk-primary-light: #a78bfa;
    --sk-primary-dark: #6d28d9;
    --sk-accent: #f59e0b;
    --sk-accent-light: #fbbf24;
    --sk-text: #cdd5e0;
    --sk-text-muted: #8b95a5;
    --sk-text-heading: #f0f4f8;
    --sk-border: rgba(255, 255, 255, 0.08);
    --sk-gradient-1: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
    --sk-gradient-2: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --sk-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --sk-shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
    --sk-radius: 12px;
    --sk-radius-lg: 20px;
}

body.semko-landing {
    background-color: var(--sk-bg-dark);
    color: var(--sk-text);
    font-family: 'Inter', 'Source Sans Pro', -apple-system, BlinkMacSystemFont, sans-serif;
    overflow-x: hidden;
    line-height: 1.7;
}

body.semko-landing *::selection {
    background: var(--sk-primary);
    color: #fff;
}

/* ---------- Scrollbar ---------- */
body.semko-landing::-webkit-scrollbar {
    width: 8px;
}
body.semko-landing::-webkit-scrollbar-track {
    background: var(--sk-bg-dark);
}
body.semko-landing::-webkit-scrollbar-thumb {
    background: var(--sk-primary-dark);
    border-radius: 4px;
}

/* ---------- Navigation ---------- */
.sk-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1050;
    padding: 16px 0;
    transition: all 0.35s ease;
    background: transparent;
}

.sk-navbar.scrolled {
    background: rgba(11, 15, 25, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 10px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.sk-navbar .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sk-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.6rem;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.sk-brand:hover {
    color: #fff;
    text-decoration: none;
}

.sk-brand-logo {
    height: 40px;
    width: auto;
}

.sk-navbar.scrolled .sk-brand-logo {
    height: 34px;
}

.sk-brand span {
    background: var(--sk-gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sk-nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.sk-nav-links a {
    color: var(--sk-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.25s ease;
    position: relative;
}

.sk-nav-links a:hover,
.sk-nav-links a.active {
    color: #fff;
}

.sk-nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--sk-primary);
    transition: width 0.3s ease;
}

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

/* Mobile menu toggle */
.sk-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px;
}

/* ---------- Buttons ---------- */
.sk-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.sk-btn-primary {
    background: var(--sk-gradient-1);
    color: #fff;
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.35);
}

.sk-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(124, 58, 237, 0.5);
    color: #fff;
}

.sk-btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid var(--sk-border);
}

.sk-btn-outline:hover {
    border-color: var(--sk-primary);
    color: var(--sk-primary-light);
    transform: translateY(-2px);
}

.sk-btn-lg {
    padding: 16px 40px;
    font-size: 1.1rem;
}

.sk-btn-download {
    background: var(--sk-gradient-2);
    color: #fff;
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
}

.sk-btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(245, 158, 11, 0.5);
    color: #fff;
}

/* ---------- Section Base ---------- */
.sk-section {
    padding: 100px 0;
    position: relative;
}

.sk-section-title {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--sk-text-heading);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.sk-section-subtitle {
    font-size: 1.1rem;
    color: var(--sk-text-muted);
    max-width: 600px;
    margin: 0 auto 60px;
}

.sk-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--sk-primary-light);
    margin-bottom: 12px;
}

/* ---------- Hero Section ---------- */
.sk-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.sk-hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.sk-hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -15%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.sk-hero-content {
    position: relative;
    z-index: 2;
}

.sk-hero-title {
    font-size: 3.8rem;
    font-weight: 900;
    line-height: 1.15;
    color: #fff;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.sk-hero-title .highlight {
    background: var(--sk-gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sk-hero-desc {
    font-size: 1.2rem;
    color: var(--sk-text-muted);
    max-width: 520px;
    margin-bottom: 40px;
    line-height: 1.8;
}

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

.sk-hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 56px;
}

.sk-hero-stat h3 {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    margin: 0;
}

.sk-hero-stat p {
    font-size: 0.85rem;
    color: var(--sk-text-muted);
    margin: 4px 0 0;
}

.sk-hero-visual {
    position: relative;
    z-index: 2;
}

.sk-hero-mockup {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    display: block;
    filter: drop-shadow(0 8px 40px rgba(124, 58, 237, 0.25));
    transition: transform 0.4s ease;
}

.sk-hero-mockup:hover {
    transform: scale(1.04);
}

.sk-hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.2) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}

/* ---------- Features Section ---------- */
.sk-features {
    background: linear-gradient(180deg, var(--sk-bg-dark) 0%, rgba(19, 24, 36, 0.5) 100%);
}

.sk-feature-card {
    background: var(--sk-bg-card);
    border: 1px solid var(--sk-border);
    border-radius: var(--sk-radius);
    padding: 36px 28px;
    height: 100%;
    transition: all 0.35s ease;
    position: relative;
    overflow: hidden;
}

.sk-feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--sk-gradient-1);
    transform: scaleX(0);
    transition: transform 0.35s ease;
}

.sk-feature-card:hover {
    background: var(--sk-bg-card-hover);
    transform: translateY(-6px);
    box-shadow: var(--sk-shadow);
    border-color: rgba(124, 58, 237, 0.2);
}

.sk-feature-card:hover::before {
    transform: scaleX(1);
}

.sk-feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
    background: rgba(124, 58, 237, 0.12);
    color: var(--sk-primary-light);
}

.sk-feature-icon.accent {
    background: rgba(245, 158, 11, 0.12);
    color: var(--sk-accent);
}

.sk-feature-icon.green {
    background: rgba(16, 185, 129, 0.12);
    color: #10b981;
}

.sk-feature-icon.red {
    background: rgba(239, 68, 68, 0.12);
    color: #ef4444;
}

.sk-feature-icon.cyan {
    background: rgba(6, 182, 212, 0.12);
    color: #06b6d4;
}

.sk-feature-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--sk-text-heading);
    margin-bottom: 10px;
}

.sk-feature-card p {
    font-size: 0.92rem;
    color: var(--sk-text-muted);
    margin: 0;
    line-height: 1.65;
}

/* ---------- How It Works Section ---------- */
.sk-howit {
    background: var(--sk-bg-dark);
}

.sk-step {
    text-align: center;
    position: relative;
    padding: 0 20px;
}

.sk-step-number {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
    background: var(--sk-gradient-1);
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.3);
}

.sk-step h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--sk-text-heading);
    margin-bottom: 10px;
}

.sk-step p {
    font-size: 0.92rem;
    color: var(--sk-text-muted);
    line-height: 1.65;
}

.sk-step-line {
    position: absolute;
    top: 32px;
    right: -50%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--sk-primary) 0%, transparent 100%);
    opacity: 0.3;
    z-index: 0;
}

/* ---------- Screenshots Section ---------- */
.sk-screenshots {
    background: linear-gradient(180deg, rgba(19, 24, 36, 0.5) 0%, var(--sk-bg-dark) 100%);
    overflow: hidden;
}

.sk-screenshot-wrapper {
    background: var(--sk-bg-card);
    border: 1px solid var(--sk-border);
    border-radius: var(--sk-radius-lg);
    padding: 8px;
    box-shadow: var(--sk-shadow-lg);
    transition: transform 0.4s ease;
}

.sk-screenshot-wrapper:hover {
    transform: scale(1.02);
}

.sk-screenshot-wrapper img {
    width: 100%;
    border-radius: 14px;
}

.sk-screenshot-placeholder {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--sk-bg-card) 0%, var(--sk-bg-card-hover) 100%);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 12px;
    color: var(--sk-text-muted);
}

.sk-screenshot-placeholder i {
    font-size: 3rem;
    color: var(--sk-primary);
    opacity: 0.5;
}

/* ---------- System Requirements ---------- */
.sk-sysreq {
    background: var(--sk-bg-dark);
}

.sk-req-card {
    background: var(--sk-bg-card);
    border: 1px solid var(--sk-border);
    border-radius: var(--sk-radius);
    padding: 28px 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.3s ease;
}

.sk-req-card:hover {
    background: var(--sk-bg-card-hover);
    border-color: rgba(124, 58, 237, 0.2);
}

.sk-req-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    background: rgba(124, 58, 237, 0.12);
    color: var(--sk-primary-light);
    flex-shrink: 0;
}

.sk-req-card h5 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--sk-text-heading);
    margin: 0 0 4px;
}

.sk-req-card p {
    font-size: 0.85rem;
    color: var(--sk-text-muted);
    margin: 0;
}

/* ---------- Download CTA Section ---------- */
.sk-cta {
    background: var(--sk-bg-dark);
    position: relative;
}

.sk-cta-box {
    background: var(--sk-gradient-1);
    border-radius: var(--sk-radius-lg);
    padding: 72px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.sk-cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.sk-cta-box::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.sk-cta-box h2 {
    font-size: 2.4rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
    position: relative;
    z-index: 2;
}

.sk-cta-box p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 36px;
    position: relative;
    z-index: 2;
}

.sk-cta-box .sk-btn {
    position: relative;
    z-index: 2;
    background: #fff;
    color: var(--sk-primary-dark);
    font-weight: 700;
}

.sk-cta-box .sk-btn:hover {
    background: var(--sk-text-heading);
    color: var(--sk-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

.sk-version {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 50px;
    margin-top: 20px;
    position: relative;
    z-index: 2;
}

/* ---------- Footer ---------- */
.sk-footer {
    background: var(--sk-bg-card);
    border-top: 1px solid var(--sk-border);
    padding: 40px 0 24px;
}

.sk-footer-brand {
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}

.sk-footer-brand span {
    background: var(--sk-gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sk-footer p {
    font-size: 0.88rem;
    color: var(--sk-text-muted);
    margin: 0;
}

.sk-footer-bottom {
    border-top: 1px solid var(--sk-border);
    margin-top: 32px;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sk-footer-copy {
    font-size: 0.82rem;
    color: var(--sk-text-muted);
}

.sk-footer-links {
    display: flex;
    gap: 24px;
}

.sk-footer-links a {
    color: var(--sk-text-muted);
    font-size: 0.82rem;
    text-decoration: none;
    transition: color 0.25s ease;
}

.sk-footer-links a:hover {
    color: var(--sk-primary-light);
}

/* ---------- Animations ---------- */
.sk-fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.sk-fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.sk-fade-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.sk-fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.sk-fade-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.sk-fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Staggered children */
.sk-stagger .sk-fade-in:nth-child(1) { transition-delay: 0.05s; }
.sk-stagger .sk-fade-in:nth-child(2) { transition-delay: 0.15s; }
.sk-stagger .sk-fade-in:nth-child(3) { transition-delay: 0.25s; }
.sk-stagger .sk-fade-in:nth-child(4) { transition-delay: 0.35s; }
.sk-stagger .sk-fade-in:nth-child(5) { transition-delay: 0.45s; }
.sk-stagger .sk-fade-in:nth-child(6) { transition-delay: 0.55s; }

/* Floating animation for hero visual */
@keyframes sk-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.sk-float {
    animation: sk-float 4s ease-in-out infinite;
}

/* Pulse for CTA */
@keyframes sk-pulse {
    0% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.4); }
    70% { box-shadow: 0 0 0 20px rgba(124, 58, 237, 0); }
    100% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0); }
}

.sk-pulse {
    animation: sk-pulse 2.5s infinite;
}

/* ---------- Guide Section ---------- */
.sk-guide {
    background: linear-gradient(180deg, rgba(19, 24, 36, 0.5) 0%, var(--sk-bg-dark) 100%);
}

/* Installation Steps */
.sk-install-step {
    background: var(--sk-bg-card);
    border: 1px solid var(--sk-border);
    border-radius: var(--sk-radius);
    padding: 32px;
    display: flex;
    gap: 28px;
    align-items: flex-start;
    transition: all 0.3s ease;
}

.sk-install-step:hover {
    border-color: rgba(124, 58, 237, 0.2);
    background: var(--sk-bg-card-hover);
}

.sk-install-step-num {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: 50%;
    background: var(--sk-gradient-1);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.25);
}

.sk-install-step-content h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--sk-text-heading);
    margin: 0 0 8px;
}

.sk-install-step-content p {
    font-size: 0.9rem;
    color: var(--sk-text-muted);
    margin: 0;
    line-height: 1.65;
}

.sk-install-screenshot {
    margin-top: 16px;
    background: var(--sk-bg-dark);
    border: 1px solid var(--sk-border);
    border-radius: 10px;
    overflow: hidden;
}

.sk-install-screenshot img {
    width: 100%;
    display: block;
}

.sk-install-screenshot-placeholder {
    padding: 40px 20px;
    text-align: center;
    color: var(--sk-text-muted);
    font-size: 0.82rem;
}

.sk-install-screenshot-placeholder i {
    display: block;
    font-size: 1.5rem;
    color: var(--sk-primary);
    opacity: 0.4;
    margin-bottom: 8px;
}

/* Guide Tabs */
.sk-guide-tabs {
    display: flex;
    gap: 6px;
    background: var(--sk-bg-card);
    border: 1px solid var(--sk-border);
    border-radius: 14px;
    padding: 6px;
    margin-bottom: 32px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.sk-guide-tabs::-webkit-scrollbar {
    height: 0;
}

.sk-guide-tab {
    flex: 1;
    min-width: 0;
    padding: 12px 20px;
    border: none;
    background: transparent;
    color: var(--sk-text-muted);
    font-size: 0.88rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.sk-guide-tab:hover {
    color: var(--sk-text-heading);
    background: rgba(255, 255, 255, 0.04);
}

.sk-guide-tab.active {
    background: var(--sk-gradient-1);
    color: #fff;
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.3);
}

.sk-guide-tab i {
    font-size: 0.9rem;
}

/* Tab Panels */
.sk-tab-panel {
    display: none;
}

.sk-tab-panel.active {
    display: block;
}

.sk-tab-content {
    display: flex;
    gap: 36px;
    align-items: flex-start;
}

.sk-tab-screenshot {
    flex: 0 0 50%;
    max-width: 50%;
}

.sk-tab-screenshot-box {
    background: var(--sk-bg-card);
    border: 1px solid var(--sk-border);
    border-radius: var(--sk-radius);
    padding: 8px;
    box-shadow: var(--sk-shadow);
}

.sk-tab-screenshot-box img {
    width: 100%;
    border-radius: 10px;
    display: block;
}

.sk-tab-screenshot-placeholder {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--sk-bg-dark) 0%, var(--sk-bg-card-hover) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 8px;
    color: var(--sk-text-muted);
    font-size: 0.82rem;
}

.sk-tab-screenshot-placeholder i {
    font-size: 2rem;
    color: var(--sk-primary);
    opacity: 0.4;
}

.sk-tab-info {
    flex: 1;
}

.sk-tab-info h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--sk-text-heading);
    margin: 0 0 8px;
}

.sk-tab-info .sk-tab-desc {
    font-size: 0.92rem;
    color: var(--sk-text-muted);
    margin-bottom: 24px;
    line-height: 1.65;
}

.sk-guide-steps {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.sk-guide-steps li {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.sk-guide-steps li .step-num {
    width: 28px;
    height: 28px;
    min-width: 28px;
    border-radius: 50%;
    background: rgba(124, 58, 237, 0.15);
    color: var(--sk-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 800;
    margin-top: 2px;
}

.sk-guide-steps li .step-text {
    font-size: 0.9rem;
    color: var(--sk-text);
    line-height: 1.6;
}

.sk-guide-steps li .step-text strong {
    color: var(--sk-text-heading);
}

@media (max-width: 767.98px) {
    .sk-tab-content {
        flex-direction: column;
    }

    .sk-tab-screenshot {
        flex: none;
        max-width: 100%;
        width: 100%;
    }

    .sk-guide-tabs {
        gap: 4px;
        padding: 4px;
    }

    .sk-guide-tab {
        padding: 10px 14px;
        font-size: 0.78rem;
    }

    .sk-guide-tab span {
        display: none;
    }

    .sk-install-step {
        flex-direction: column;
        gap: 16px;
    }
}

/* ---------- Responsive ---------- */
@media (max-width: 991.98px) {
    .sk-hero-title {
        font-size: 2.6rem;
    }

    .sk-section-title {
        font-size: 2rem;
    }

    .sk-hero-stats {
        gap: 32px;
    }

    .sk-hero-visual {
        margin-top: 48px;
        text-align: center;
    }

    .sk-hero-mockup {
        max-width: 440px;
    }

    .sk-nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(11, 15, 25, 0.98);
        backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
        border-bottom: 1px solid var(--sk-border);
    }

    .sk-nav-links.open {
        display: flex;
    }

    .sk-menu-toggle {
        display: block;
    }

    .sk-step-line {
        display: none;
    }
}

@media (max-width: 575.98px) {
    .sk-hero {
        padding-top: 100px;
        min-height: auto;
        padding-bottom: 60px;
    }

    .sk-hero-title {
        font-size: 2rem;
    }

    .sk-hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .sk-hero-buttons {
        flex-direction: column;
    }

    .sk-hero-buttons .sk-btn {
        width: 100%;
        justify-content: center;
    }

    .sk-section {
        padding: 64px 0;
    }

    .sk-section-title {
        font-size: 1.6rem;
    }

    .sk-cta-box {
        padding: 48px 24px;
    }

    .sk-cta-box h2 {
        font-size: 1.6rem;
    }

    .sk-footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* ---------- Particle Background (Hero) ---------- */
.sk-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}

.sk-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--sk-primary);
    opacity: 0.15;
    animation: sk-particle-float linear infinite;
}

@keyframes sk-particle-float {
    0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 0.15; }
    90% { opacity: 0.15; }
    100% { transform: translateY(-10vh) rotate(720deg); opacity: 0; }
}

.sk-particle:nth-child(1) { left: 10%; animation-duration: 12s; animation-delay: 0s; width: 3px; height: 3px; }
.sk-particle:nth-child(2) { left: 25%; animation-duration: 16s; animation-delay: 2s; width: 5px; height: 5px; }
.sk-particle:nth-child(3) { left: 40%; animation-duration: 14s; animation-delay: 4s; }
.sk-particle:nth-child(4) { left: 55%; animation-duration: 18s; animation-delay: 1s; width: 6px; height: 6px; }
.sk-particle:nth-child(5) { left: 70%; animation-duration: 13s; animation-delay: 3s; width: 3px; height: 3px; }
.sk-particle:nth-child(6) { left: 85%; animation-duration: 15s; animation-delay: 5s; }
.sk-particle:nth-child(7) { left: 5%; animation-duration: 17s; animation-delay: 7s; width: 5px; height: 5px; }
.sk-particle:nth-child(8) { left: 50%; animation-duration: 11s; animation-delay: 6s; }
.sk-particle:nth-child(9) { left: 92%; animation-duration: 19s; animation-delay: 2.5s; width: 3px; height: 3px; }
.sk-particle:nth-child(10) { left: 35%; animation-duration: 14s; animation-delay: 8s; width: 4px; height: 4px; }