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

:root {
    --color-primary: #1a56db;
    --color-primary-dark: #1444b0;
    --color-primary-light: #e8effc;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-bg: #ffffff;
    --color-bg-alt: #f9fafb;
    --color-border: #e5e7eb;
    --color-success: #059669;
    --color-danger: #dc2626;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
    --max-width: 960px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

/* ===== LAYOUT ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAV ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-cta {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    padding: 8px 16px;
    border: 1.5px solid var(--color-primary);
    border-radius: var(--radius);
    transition: all 0.2s;
}

.nav-cta:hover {
    background: var(--color-primary);
    color: #fff;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    padding: 14px 28px;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1.5px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-text);
}

.btn-full {
    width: 100%;
}

/* ===== HERO ===== */
.hero {
    padding: 140px 0 80px;
    text-align: center;
}

.hero h1 {
    font-size: 42px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.5px;
    margin-bottom: 20px;
}

.hero-sub {
    font-size: 18px;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

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

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

.section h2 {
    font-size: 30px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.3px;
}

.section-lead {
    font-size: 17px;
    color: var(--color-text-light);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.section-note {
    text-align: center;
    color: var(--color-text-light);
    font-size: 15px;
    margin-top: 32px;
}

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

.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
}

.card p {
    font-size: 15px;
    line-height: 1.6;
}

.card-problem {
    border-left: 3px solid var(--color-danger);
}

.card-icon {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}

/* ===== CHECK LIST ===== */
.check-list {
    list-style: none;
    max-width: 520px;
    margin: 0 auto;
}

.check-list li {
    padding: 12px 0;
    padding-left: 28px;
    position: relative;
    font-size: 16px;
    border-bottom: 1px solid var(--color-border);
}

.check-list li:last-child {
    border-bottom: none;
}

.check-list li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

/* ===== STEPS ===== */
.steps {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0;
}

.step {
    text-align: center;
    flex: 0 0 auto;
    max-width: 160px;
}

.step-number {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-weight: 700;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
}

.step p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
}

.step-line {
    width: 40px;
    height: 2px;
    background: var(--color-border);
    flex-shrink: 0;
    margin-bottom: 20px;
}

/* ===== COMPARE ===== */
.compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.compare-col {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--color-border);
}

.compare-col h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.compare-yes h3 {
    color: var(--color-success);
}

.compare-no h3 {
    color: var(--color-danger);
}

.compare-col ul {
    list-style: none;
}

.compare-col li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    font-size: 15px;
}

.compare-yes li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

.compare-no li::before {
    content: "\2717";
    position: absolute;
    left: 0;
    color: var(--color-danger);
    font-weight: 700;
}

/* ===== BENEFITS ===== */
.benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

.benefit {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    text-align: center;
    flex: 0 1 170px;
}

.benefit-label {
    display: block;
    font-weight: 700;
    font-size: 16px;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.benefit-text {
    font-size: 14px;
    color: var(--color-text-light);
}

/* ===== TRUST ===== */
.trust-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    max-width: 640px;
    margin: 0 auto;
}

.trust-item {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px 24px;
    font-size: 15px;
    text-align: center;
}

/* ===== FAQ ===== */
.faq-list {
    max-width: 640px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
    padding: 20px 0;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::after {
    content: "+";
    font-size: 20px;
    color: var(--color-text-light);
    font-weight: 400;
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item[open] summary::after {
    content: "\2212";
}

.faq-item p {
    padding: 0 0 20px;
    color: var(--color-text-light);
    font-size: 15px;
    line-height: 1.6;
}

/* ===== CTA / FORM ===== */
.section-cta {
    background: var(--color-primary-light);
}

.section-thanks {
    padding: 120px 0;
    background: var(--color-primary-light);
}

.demo-form {
    max-width: 480px;
    margin: 0 auto;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--color-text);
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    font-family: inherit;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg);
    color: var(--color-text);
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}

.form-group input::placeholder {
    color: #9ca3af;
}

.demo-form .btn {
    margin-top: 8px;
}

/* ===== FOOTER ===== */
.footer {
    padding: 24px 0;
    border-top: 1px solid var(--color-border);
}

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

.footer .logo {
    font-size: 16px;
}

.footer-copy {
    font-size: 13px;
    color: var(--color-text-light);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .hero {
        padding: 120px 0 60px;
    }

    .hero h1 {
        font-size: 28px;
    }

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

    .section {
        padding: 60px 0;
    }

    .section h2 {
        font-size: 24px;
    }

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

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

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

    .steps {
        flex-direction: column;
        align-items: center;
    }

    .step {
        max-width: 240px;
    }

    .step-line {
        width: 2px;
        height: 24px;
        margin-bottom: 0;
    }

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

    .demo-form {
        padding: 24px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}