:root {
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --secondary: #764ba2;
    --dark: #0f172a;
    --darker: #020617;
    --light: #f1f5f9;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --card-bg: #ffffff;
    --bg-body: #ffffff;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

[data-theme="dark"] {
    --dark: #f1f5f9;
    --light: #0f172a;
    --text: #f1f5f9;
    --text-light: #94a3b8;
    --border: #334155;
    --card-bg: #1e293b;
    --bg-body: #0f172a;
    --darker: #020617;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.3);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--text);
    background: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }

/* Header */
.header {
    background: transparent;
    padding: 12px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    padding: 10px 0;
}

[data-theme="dark"] .header.scrolled {
    background: rgba(15, 23, 42, 0.75);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    transition: transform 0.3s ease;
}

.logo:hover { transform: scale(1.02); }

.nav-tabs {
    display: flex;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-tabs a {
    padding: 10px 18px;
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    border-radius: 10px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-tabs a:hover {
    background: rgba(102, 126, 234, 0.08);
    color: var(--primary);
}

.nav-tabs a.active { color: var(--primary); background: transparent; }

.nav-tabs a.active::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: var(--gradient);
    border-radius: 2px;
}

.theme-toggle {
    background: none;
    border: none;
    border-radius: 8px;
    padding: 8px;
    cursor: pointer;
    color: var(--text);
    transition: all 0.3s ease;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
}

.theme-toggle:hover { color: var(--primary); background: var(--border); }

.theme-toggle i { font-size: 16px; }

.header-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

/* Hero */
.hero {
    background: var(--bg-body);
    padding: 60px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    min-height: 100vh;
}

.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    left: -10%;
    width: 60%;
    height: 80%;
    background: radial-gradient(ellipse, rgba(102, 126, 234, 0.25) 0%, transparent 60%);
    animation: blobFloat1 12s ease-in-out infinite;
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    right: -10%;
    width: 50%;
    height: 70%;
    background: radial-gradient(ellipse, rgba(118, 75, 162, 0.2) 0%, transparent 60%);
    animation: blobFloat2 15s ease-in-out infinite;
    z-index: 0;
}

@keyframes blobFloat1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

@keyframes blobFloat2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-30px, 20px) scale(1.15); }
    66% { transform: translate(20px, -30px) scale(0.85); }
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(102, 126, 234, 0.12);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(102, 126, 234, 0.25);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 20px;
    animation: fadeInDown 0.8s ease-out;
}

[data-theme="dark"] .hero-badge {
    background: rgba(102, 126, 234, 0.2);
    border-color: rgba(102, 126, 234, 0.3);
}

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

.hero h1 {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 20px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero p {
    font-size: clamp(15px, 1.8vw, 18px);
    color: var(--text-light);
    margin-bottom: 28px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

.btn-hero {
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-hero-primary {
    background: var(--gradient);
    color: white;
    border: none;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-hero-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.6s ease;
}

.btn-hero-primary:hover::before { left: 100%; }

.btn-hero-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 45px rgba(102, 126, 234, 0.5);
    color: white;
}

.btn-hero-outline {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--text);
    border: 2px solid var(--border);
}

[data-theme="dark"] .btn-hero-outline { background: rgba(15, 23, 42, 0.6); }

.btn-hero-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-4px);
    background: rgba(102, 126, 234, 0.08);
}

.hero-trust {
    display: flex;
    gap: 24px;
    margin-top: 24px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.8s both;
}

.hero-trust span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-light);
    font-weight: 500;
}

.hero-trust span i { color: var(--primary); font-size: 16px; }

/* Section shared */
.section { padding: 48px 24px; }

.container {
    max-width: 1280px;
    margin: 0 auto;
    width: 100%;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 28px;
}

.section-header h2 {
    font-size: clamp(28px, 3.5vw, 40px);
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 12px;
}

.section-header p {
    font-size: 16px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Grid - Simple 4-column */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    margin-bottom: 16px;
    font-size: 24px;
    color: var(--primary);
}

[data-theme="dark"] .feature-icon {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 32px 24px;
    border-radius: 20px;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(102, 126, 234, 0.3);
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* Steps Grid */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: 32px;
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.steps-grid::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--secondary), transparent);
    border-radius: 2px;
    z-index: 0;
    opacity: 0.4;
}

.step-card {
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.8), rgba(118, 75, 162, 0.8));
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 28px;
    font-weight: 800;
    color: white;
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.3);
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.step-number::after {
    content: '';
    position: absolute;
    inset: -8px;
    border: 2px dashed rgba(102, 126, 234, 0.3);
    border-radius: 50%;
    opacity: 0.4;
    animation: spin 20s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.step-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }

.step-card p { color: var(--text-light); font-size: 15px; }

/* FAQ */
.faq-grid { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }

.faq-item { background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; transition: border-color 0.3s; }

.faq-item[open] { border-color: rgba(102, 126, 234, 0.3); }

.faq-item summary { padding: 20px 24px; font-weight: 600; font-size: 15px; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 12px; user-select: none; }

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after { content: '+'; font-size: 20px; color: var(--primary); flex-shrink: 0; transition: transform 0.3s; }

.faq-item[open] summary::after { transform: rotate(45deg); }

.faq-item p {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
    padding: 0 24px;
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
}

.faq-item[open] p {
    max-height: 300px;
    opacity: 1;
    padding: 0 24px 20px;
}

/* Footer */
.footer {
    background: linear-gradient(180deg, var(--darker) 0%, #080d1a 100%);
    color: white;
    padding: 40px 24px 0;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 5%;
    right: 5%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.5), rgba(118, 75, 162, 0.5), transparent);
}

.footer-content { max-width: 1200px; margin: 0 auto; }

.footer-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr 1.1fr;
    gap: 40px;
    padding-bottom: 28px;
    max-width: 1200px;
    margin: 0 auto;
    align-items: start;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    margin-bottom: 16px;
}

.footer-brand {
    text-align: left;
}

.footer-desc {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 14px;
    line-height: 1.8;
    max-width: 300px;
    margin-left: 0;
    margin-right: 0;
}

.footer-social-icons {
    display: flex;
    gap: 10px;
    justify-content: flex-start;
}

.footer-social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.6);
    font-size: 17px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.footer-social-icons a:hover {
    background: var(--gradient);
    border-color: transparent;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.35);
}

.footer-col-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,0.95);
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 8px;
    text-align: left;
    display: inline-block;
}

.footer-col-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient);
    border-radius: 2px;
}

.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    line-height: 1.6;
    padding: 6px 0;
    transition: all 0.3s ease;
}

.footer-contact li:hover {
    color: rgba(255,255,255,0.85);
}

.footer-contact li i {
    color: var(--primary);
    font-size: 14px;
    margin-top: 1px;
    flex-shrink: 0;
}

.footer-contact li a,
.footer-links a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-contact li:hover a,
.footer-links a:hover {
    color: var(--primary);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links li a {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.footer-links li a::before {
    content: '→';
    color: var(--primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.footer-links li a:hover {
    color: var(--primary);
    padding-left: 4px;
}

.footer-links li a:hover::before {
    opacity: 1;
}

.footer-contact-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    gap: 8px;
    background: var(--gradient);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 12px 18px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease, opacity 0.25s ease;
}

.footer-contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.contact-form-wrap {
    max-width: 1200px;
    margin: 0 auto 8px;
}

.contact-form {
    display: none;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 14px;
    padding: 20px;
}

.contact-form.open {
    display: block;
    animation: contact-slide 0.3s ease;
}

@keyframes contact-slide {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.contact-note {
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 14px;
}

.contact-note.success {
    background: rgba(34, 197, 94, 0.15);
    color: #4ade80;
    border: 1px solid rgba(34, 197, 94, 0.35);
}

.contact-note.error {
    background: rgba(244, 63, 94, 0.15);
    color: #fb7185;
    border: 1px solid rgba(244, 63, 94, 0.35);
}

.contact-honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    width: 0;
}

.contact-form form {
    margin: 0;
}

.contact-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 12px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 10px;
    padding: 12px 14px;
    color: #fff;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
    box-sizing: border-box;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: rgba(255,255,255,0.4);
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.25);
}

.contact-form textarea {
    resize: vertical;
    margin-bottom: 12px;
}

.contact-form-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-send-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--gradient);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 12px 22px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.footer-send-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.footer-close-btn {
    margin-left: auto;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.7);
    border-radius: 10px;
    width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.footer-close-btn:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
    border-color: rgba(255,255,255,0.4);
}

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid rgba(255,255,255,0.12);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

/* Mobile Menu */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 28px;
    color: var(--text);
    cursor: pointer;
    padding: 8px;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
}

.mobile-toggle:hover { color: var(--primary); background: var(--border); }

/* Responsive */
@media (max-width: 1200px) {
    .header-content { padding: 0 16px; }
    .container { max-width: 100%; padding: 0 24px; }
}

@media (max-width: 992px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }

    .steps-grid::before { display: none; }

    .steps-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; }

    .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 768px) {
    .header { padding: 8px 0; overflow: visible; }

    .footer-grid { grid-template-columns: 1fr; gap: 28px; }

    .contact-form-row { grid-template-columns: 1fr; }

    .contact-form { padding: 16px; }

    .contact-form input,
    .contact-form textarea { padding: 10px 12px; font-size: 13px; }

    .footer-send-btn { padding: 10px 18px; font-size: 13px; }

    .header-content { overflow: visible; display: flex; justify-content: space-between; gap: 0; padding: 0 20px; }

    .header-actions { gap: 8px; }

    .logo { min-width: 0; margin-right: auto; max-width: 55%; overflow: hidden; }

    .logo img { max-width: 100%; height: auto !important; max-height: 38px; width: auto; }

    .nav-tabs {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.85);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        flex-direction: column;
        padding: 16px;
        box-shadow: var(--shadow-lg);
        border-radius: 0 0 16px 16px;
        gap: 8px;
    }

    [data-theme="dark"] .nav-tabs { background: rgba(15, 23, 42, 0.85); }

    .nav-tabs.active { display: flex; }

    .nav-tabs a { padding: 12px 16px; width: 100%; justify-content: flex-start; }

    .mobile-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        width: 32px;
        height: 32px;
        padding: 4px;
        flex-shrink: 0;
        border-radius: 8px;
        background: rgba(255,255,255,0.85);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        color: var(--text);
    }

    [data-theme="dark"] .mobile-toggle { background: rgba(15,23,42,0.85); }

    .mobile-toggle i.bi::before {
        content: '';
        display: block;
        width: 16px;
        height: 2px;
        background: var(--text);
        border-radius: 1px;
        box-shadow: 0 5px 0 var(--text), 0 10px 0 var(--text);
        font-family: inherit;
    }

    .theme-toggle {
        width: 32px;
        height: 32px;
        padding: 4px;
        background: rgba(255,255,255,0.85);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-radius: 8px;
    }

    [data-theme="dark"] .theme-toggle { background: rgba(15,23,42,0.85); }

    .theme-toggle i { font-size: 16px; }

    .hero { padding: 84px 16px 48px; min-height: auto; }

    .hero-content { padding: 0 8px; }

    .section { padding: 40px 16px; }

    .features-grid,
    .steps-grid { grid-template-columns: 1fr; gap: 16px; }

    .feature-card { padding: 18px 16px; border-radius: 16px; }

    .feature-icon { width: 44px; height: 44px; font-size: 18px; border-radius: 12px; margin-bottom: 12px; }

    .feature-card h3 { font-size: 16px; margin-bottom: 6px; }

    .feature-card p { font-size: 13px; line-height: 1.55; }

    .step-card { margin-bottom: 18px; }

    .step-number { width: 60px; height: 60px; font-size: 22px; margin-bottom: 14px; box-shadow: 0 6px 20px rgba(102, 126, 234, 0.25); }

    .steps-grid::before { top: 30px; }

    .step-card h3 { font-size: 16px; margin-bottom: 6px; }

    .step-card p { font-size: 13px; line-height: 1.55; }

    .step-card:last-child { margin-bottom: 0; }

    .btn-hero { padding: 14px 24px; font-size: 15px; width: 100%; justify-content: center; }

    .hero-buttons { flex-direction: column; width: 100%; padding: 0 20px; }

    .container { padding: 0 16px; }

    .section-header { margin-bottom: 40px; }

    .section-header h2 { font-size: 28px; }

    .section-header p { font-size: 16px; }

    .hero-trust { gap: 16px; }

    .hero-trust span { font-size: 12px; }

    .footer { padding: 24px 16px 0; }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px 16px;
        padding-bottom: 16px;
        max-width: none;
    }

    .footer-brand { order: 1; text-align: center; grid-column: 1 / -1; }

    .footer-desc { max-width: 100%; margin-left: auto; margin-right: auto; margin-bottom: 8px; font-size: 12px; line-height: 1.6; }

    .footer-logo { justify-content: center; margin-bottom: 8px; }

    .footer-logo img { height: 36px; width: auto; }

    .footer-col { order: 2; }

    .footer-col:last-child { grid-column: 1 / -1; }

    .footer-col-title { display: table; margin: 0 auto 10px; text-align: center; font-size: 12px; padding-bottom: 5px; }

    .footer-social-icons { justify-content: center; }

    .footer-social-icons a { width: 34px; height: 34px; font-size: 15px; }

    .footer-contact { margin: 0; gap: 2px; align-items: center; }

    .footer-contact li { padding: 3px 0; font-size: 12px; gap: 8px; }

    .footer-links { gap: 4px; align-items: center; }

    .footer-links li a { font-size: 12px; }

    .footer-contact-btn { padding: 10px 14px; font-size: 12px; }

    .footer-bottom { padding: 12px 0; }

    .footer-bottom p { font-size: 12px; }

}

@media (max-width: 480px) {
    .hero h1 { font-size: 32px; }

    .hero p { font-size: 16px; }

    .feature-card { padding: 16px 14px; }

    .step-number { width: 56px; height: 56px; font-size: 20px; }

    .footer { padding: 28px 16px 0; }

    .footer-grid { gap: 16px; }
}

@media (max-width: 360px) {
    .hero h1 { font-size: 28px; }
    .hero p { font-size: 15px; margin-bottom: 20px; }
    .btn-hero { padding: 12px 20px; font-size: 14px; }
    .hero-trust { gap: 10px; }
    .hero-trust span { font-size: 11px; }
    .section { padding: 32px 14px; }
    .section-header h2 { font-size: 24px; }
    .feature-icon { width: 40px; height: 40px; font-size: 16px; border-radius: 10px; margin-bottom: 10px; }
    .feature-card { padding: 14px 12px; }
    .step-number { width: 52px; height: 52px; font-size: 18px; }
    .step-card h3 { font-size: 16px; }
    .faq-item summary { padding: 16px 18px; font-size: 14px; }
    .faq-item[open] p { padding: 0 18px 16px; }
    .footer { padding: 24px 14px 0; }
    .footer-logo img { height: 36px; }
}
/* Brand Partners Marquee */
.devices-marquee {
    position: relative;
    overflow: hidden;
    padding: 12px 0;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}

.devices-track {
    display: flex;
    align-items: center;
    gap: 16px;
    width: max-content;
    animation: devices-scroll 32s linear infinite;
    will-change: transform;
}

.devices-marquee:hover .devices-track {
    animation-play-state: paused;
}

@keyframes devices-scroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

.device-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 22px;
    border-radius: 14px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    white-space: nowrap;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.device-card:hover {
    border-color: rgba(102, 126, 234, 0.35);
    transform: translateY(-2px);
}

.device-card img {
    height: 22px;
    width: auto;
    max-width: 64px;
    flex-shrink: 0;
    filter: grayscale(1);
    opacity: 0.75;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

[data-theme="dark"] .device-card img {
    filter: grayscale(1) invert(1);
    opacity: 0.85;
}

.device-card:hover img {
    opacity: 1;
    transform: scale(1.05);
}

.device-card span {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.2px;
}

@media (max-width: 768px) {
    .devices-track { gap: 10px; }
    .device-card { padding: 10px 16px; gap: 8px; }
    .device-card img { height: 18px; max-width: 48px; }
    .device-card span { font-size: 13px; }
}

/* Sticky WhatsApp chat button */
.whatsapp-chat {
    position: fixed;
    right: 20px;
    bottom: 28px;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #25d366;
    color: #fff;
    font-size: 28px;
    text-decoration: none;
    box-shadow: 0 6px 16px rgba(37, 211, 102, 0.45);
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.whatsapp-chat:hover,
.whatsapp-chat:focus-visible {
    color: #fff;
    background: #1ebe5b;
    transform: translateY(-3px);
    box-shadow: 0 10px 22px rgba(37, 211, 102, 0.55);
    outline: none;
}
.whatsapp-chat::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5);
    animation: whatsapp-pulse 2.2s infinite;
}
.whatsapp-chat .whatsapp-label {
    position: absolute;
    right: 66px;
    white-space: nowrap;
    padding: 7px 14px;
    border-radius: 9999px;
    background: var(--card-bg, #fff);
    color: var(--text, #0f172a);
    font-size: 13px;
    font-weight: 600;
    opacity: 0;
    transform: translateX(8px);
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}
.whatsapp-chat:hover .whatsapp-label,
.whatsapp-chat:focus-visible .whatsapp-label {
    opacity: 1;
    transform: translateX(0);
}
@keyframes whatsapp-pulse {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.45); }
    70% { box-shadow: 0 0 0 14px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}
@media (max-width: 768px) {
    .whatsapp-chat {
        right: 14px;
        bottom: 24px;
        width: 48px;
        height: 48px;
        font-size: 24px;
    }
    .whatsapp-chat .whatsapp-label { display: none; }
}
@media (prefers-reduced-motion: reduce) {
    .whatsapp-chat::before { animation: none; }
    .whatsapp-chat { transition: none; }
}