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

:root {
    --primary: #1565c0;
    --primary-dark: #0d47a1;
    --primary-light: #e3f2fd;
    --accent: #b34700;
    --accent-light: #fff8e1;
    --text: #1a1a2e;
    --text-light: #546e7a;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --bg-dark: #0f172a;
    --success: #2e7d32;
    --danger: #c62828;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
    --shadow-lg: 0 4px 24px rgba(0,0,0,0.1);
    --transition: 200ms ease;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    font-size: 16px;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

a:hover {
    color: var(--primary-dark);
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    height: 64px;
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text) !important;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a:not(.btn) {
    color: var(--text-light);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
}

.nav-links a:not(.btn):hover {
    color: var(--text);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    text-decoration: none;
    white-space: nowrap;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1.05rem;
}

.btn-primary {
    background: var(--primary);
    color: #fff !important;
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(21, 101, 192, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--primary) !important;
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary-light);
}

/* ===== Hero ===== */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--bg) 0%, var(--primary-light) 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--accent-light);
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.highlight {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 520px;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.hero-note {
    font-size: 0.85rem;
    color: var(--text-light);
}

.screenshot-frame {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0,0,0,0.08);
    background: #f1f5f9;
}

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

/* ===== Pain Section ===== */
.pain-section {
    padding: 80px 0;
    background: var(--bg);
}

.pain-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.pain-card {
    padding: 40px;
    border-radius: var(--radius);
    border: 1px solid rgba(0,0,0,0.08);
}

.pain-old {
    background: #fef2f2;
    border-color: #fecaca;
}

.pain-new {
    background: #f0fdf4;
    border-color: #bbf7d0;
}

.pain-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.pain-card h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
}

.pain-card ul {
    list-style: none;
    margin-bottom: 24px;
}

.pain-card ul li {
    padding: 6px 0;
    padding-left: 24px;
    position: relative;
    color: var(--text-light);
}

.pain-old ul li::before {
    content: "✕";
    position: absolute;
    left: 0;
    color: var(--danger);
    font-weight: 700;
}

.pain-new ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

.pain-time {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid rgba(0,0,0,0.08);
}

.time-value {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.pain-old .time-value {
    color: var(--danger);
}

.pain-new .time-value {
    color: var(--success);
}

.time-label {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 4px;
}

/* ===== Features ===== */
.features-section {
    padding: 100px 0;
    background: var(--bg-alt);
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 56px;
}

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

.feature-card {
    background: var(--bg);
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid rgba(0,0,0,0.06);
    transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== How it works ===== */
.how-section {
    padding: 100px 0;
    background: var(--bg);
}

.steps {
    max-width: 700px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 32px;
    margin-bottom: 56px;
    position: relative;
}

.step:not(:last-child)::after {
    content: "";
    position: absolute;
    left: 24px;
    top: 56px;
    bottom: -56px;
    width: 2px;
    background: var(--primary-light);
}

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.step-content h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    padding-top: 10px;
}

.step-content p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.step-screenshot {
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid rgba(0,0,0,0.08);
    background: #f1f5f9;
}

.step-screenshot img {
    width: 100%;
}

/* ===== Stats ===== */
.stats-section {
    padding: 80px 0;
    background: var(--bg-dark);
    color: #fff;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-value {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #60a5fa, #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    margin-top: 8px;
    color: #94a3b8;
    font-size: 1rem;
}

/* ===== FAQ ===== */
.faq-section {
    padding: 100px 0;
    background: var(--bg-alt);
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    background: var(--bg);
    overflow: hidden;
}

.faq-item summary {
    padding: 20px 24px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background var(--transition);
}

.faq-item summary:hover {
    background: var(--bg-alt);
}

.faq-item summary::after {
    content: "+";
    font-size: 1.4rem;
    color: var(--text-light);
    font-weight: 300;
    transition: transform var(--transition);
}

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

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

.faq-item p {
    padding: 0 24px 20px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== CTA ===== */
.cta-section {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-light) 0%, #e8eaf6 100%);
}

.cta-section h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-section p {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

/* ===== Footer ===== */
.footer {
    padding: 64px 0 32px;
    background: var(--bg-dark);
    color: #94a3b8;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    color: #fff !important;
    display: block;
    margin-bottom: 12px;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-heading {
    color: #fff;
    font-size: 0.9rem;
    margin-bottom: 16px;
    font-weight: 600;
}

.footer-links a {
    display: block;
    color: #94a3b8;
    font-size: 0.9rem;
    margin-bottom: 10px;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: #e2e8f0;
}

.footer-legal hr {
    border: none;
    border-top: 1px solid rgba(255,255,255,0.08);
    margin-bottom: 24px;
}

.legal-text {
    font-size: 0.8rem;
    line-height: 1.7;
    color: #94a3b8;
    max-width: 800px;
}

.legal-text p {
    margin-bottom: 12px;
}

.copyright {
    margin-top: 24px;
    font-size: 0.8rem;
    color: #94a3b8;
}

/* ===== Security Page ===== */
.security-hero {
    padding: 140px 0 60px;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #fff;
}

.security-hero-inner {
    max-width: 700px;
}

.security-hero .badge {
    background: rgba(255,255,255,0.1);
    color: #94a3b8;
}

.security-hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.security-hero .hero-subtitle {
    color: #94a3b8;
    font-size: 1.15rem;
    line-height: 1.7;
}

.sec-section {
    padding: 80px 0;
}

.sec-alt {
    background: var(--bg-alt);
}

.sec-principle {
    display: flex;
    gap: 32px;
    align-items: flex-start;
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    background: #fefce8;
    border: 1px solid #fde68a;
    border-radius: var(--radius);
}

.sec-principle-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.sec-principle h2 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.sec-principle p {
    color: var(--text-light);
    line-height: 1.7;
}

.sec-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.sec-card {
    background: var(--bg);
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: var(--radius);
    overflow: hidden;
}

.sec-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 24px 28px 0;
}

.sec-card-icon {
    font-size: 1.6rem;
}

.sec-card-header h3 {
    font-size: 1.15rem;
}

.sec-card-body {
    padding: 16px 28px 28px;
}

.sec-card-body p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.sec-card-body p:last-child {
    margin-bottom: 0;
}

.sec-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
}

.sec-check-icon {
    color: var(--success);
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.sec-check span:last-child {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

.sec-flow {
    background: var(--bg-alt);
    border-radius: var(--radius-sm);
    padding: 20px;
    margin: 16px 0;
}

.sec-flow-step {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.sec-flow-label {
    background: var(--bg);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.85rem;
    border: 1px solid rgba(0,0,0,0.08);
}

.sec-flow-arrow {
    color: var(--primary);
    font-size: 1.2rem;
    font-weight: 700;
}

.sec-data-table {
    margin: 16px 0;
}

.sec-data-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
}

.sec-data-icon {
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
    width: 20px;
    text-align: center;
}

.sec-data-yes .sec-data-icon {
    color: var(--success);
}

.sec-data-no .sec-data-icon {
    color: var(--danger);
}

.sec-data-row span:last-child {
    font-size: 0.95rem;
    color: var(--text-light);
}

/* Architecture */
.sec-architecture {
    max-width: 800px;
    margin: 0 auto;
}

.sec-arch-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.sec-arch-box {
    padding: 24px 28px;
    border-radius: var(--radius);
    text-align: center;
    min-width: 180px;
}

.sec-arch-box strong {
    display: block;
    margin-bottom: 4px;
}

.sec-arch-box span {
    font-size: 0.8rem;
    color: var(--text-light);
}

.sec-arch-user {
    background: var(--primary-light);
    border: 1px solid #90caf9;
}

.sec-arch-server {
    background: #fefce8;
    border: 1px solid #fde68a;
}

.sec-arch-ebh {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
}

.sec-arch-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.sec-arch-arrow span:first-child {
    font-size: 0.7rem;
    color: var(--text-light);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sec-arch-arrow-line {
    font-size: 1.5rem;
    color: var(--primary);
    font-weight: 700;
}

.sec-arch-notes {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.sec-arch-note {
    font-size: 0.85rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.sec-arch-note-icon {
    font-size: 1rem;
}

/* What We Don't Do */
.sec-dont-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.sec-dont-card {
    text-align: center;
    padding: 32px 20px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid rgba(0,0,0,0.06);
}

.sec-dont-icon {
    font-size: 1.8rem;
    color: var(--danger);
    font-weight: 700;
    margin-bottom: 16px;
}

.sec-dont-card h3 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.sec-dont-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Legal Sections */
.sec-legal-section {
    padding: 80px 0;
    background: var(--bg);
}

.sec-legal-content {
    max-width: 800px;
    margin: 40px auto 0;
}

.sec-legal-block {
    margin-bottom: 36px;
}

.sec-legal-block h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.sec-legal-block p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.sec-legal-block ul {
    margin: 12px 0;
    padding-left: 24px;
    color: var(--text-light);
    line-height: 1.8;
    font-size: 0.95rem;
}

.sec-legal-block ul li {
    margin-bottom: 6px;
}

.sec-legal-date {
    margin-top: 48px;
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .hero {
        padding: 100px 0 60px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1.05rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .hero-image {
        display: none;
    }

    .pain-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid rgba(0,0,0,0.06);
        box-shadow: var(--shadow);
    }

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

    .mobile-menu-btn {
        display: flex;
    }

    .step {
        gap: 20px;
    }

    .step:not(:last-child)::after {
        left: 20px;
    }

    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .sec-grid {
        grid-template-columns: 1fr;
    }

    .sec-dont-grid {
        grid-template-columns: 1fr 1fr;
    }

    .sec-principle {
        flex-direction: column;
        gap: 16px;
        padding: 28px;
    }

    .sec-arch-row {
        flex-direction: column;
    }

    .sec-arch-arrow {
        transform: rotate(90deg);
    }

    .sec-arch-notes {
        flex-direction: column;
        align-items: center;
    }

    .security-hero h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.7rem;
    }

    .pain-card {
        padding: 28px;
    }

    .stat-value {
        font-size: 2.4rem;
    }

    .sec-dont-grid {
        grid-template-columns: 1fr;
    }
}