:root {
    /* Legacy sd- variables (preserved for component compatibility) */
    --sd-primary: #1F3E8A;
    --sd-primary-cta: #2F4FA7;
    --sd-primary-cta-dark: #1F3E8A;
    --sd-primary-light: #EEF2FF;
    --sd-accent: #D86A2C;
    --sd-accent-dark: #C45F25;
    --sd-accent-light: #FFF3E8;
    --sd-orange: #D86A2C;
    --sd-orange-dark: #C45F25;
    --sd-orange-light: #FFF3E8;
    --sd-dark: #0B1220;
    --sd-slate: #1E293B;
    --sd-muted: #475569;
    --sd-border: #CBD5E1;
    --sd-bg: #FFFFFF;
    --sd-bg-alt: #F8FAFC;
    --sd-green: #10B981;
    --sd-blue: #2F4FA7;
    --sd-radius: 12px;
    --sd-radius-sm: 8px;
    --sd-shadow: 0 4px 12px rgba(0,0,0,0.06);
    --sd-shadow-md: 0 8px 24px rgba(0,0,0,0.08);
    --sd-shadow-lg: 0 12px 32px rgba(0,0,0,0.12);

    /* Premium color palette */
    --color-primary: #2F4FA7;
    --color-primary-dark: #1F3E8A;
    --color-primary-light: #3F63C2;
    --color-accent: #D86A2C;
    --color-accent-dark: #C45F25;
    --color-bg: #FFFFFF;
    --color-bg-soft: #F8FAFC;
    --color-bg-muted: #F1F5F9;
    --color-text: #1E293B;
    --color-text-muted: #475569;
    --color-text-soft: #64748B;
    --color-text-light: #CBD5E1;
    --hero-start: #0B1220;
    --hero-end: #0F172A;
    --radius-large: 12px;
    --radius-small: 8px;
    --shadow-soft: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-medium: 0 8px 24px rgba(0,0,0,0.08);
    --shadow-strong: 0 12px 32px rgba(0,0,0,0.12);
    --container-width: 1280px;
    --section-padding: 96px;
}

* { box-sizing: border-box; }

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--sd-slate);
    background: #F9FAFB;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

/* ===== CONTAINER ===== */
.sd-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== NAVBAR ===== */
.sd-navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(243,244,246,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #E5E7EB;
}

.sd-navbar-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    gap: 32px;
}

.sd-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--sd-dark);
    text-decoration: none;
    flex-shrink: 0;
}

.sd-brand:hover { color: var(--sd-orange); text-decoration: none; }

.sd-brand-img { gap: 0; }

.sd-logo-img {
    height: 50px;
    width: auto;
    display: block;
}

.sd-brand-footer {
    color: #fff;
    font-size: 1.15rem;
    font-weight: 700;
}

.sd-brand-footer:hover { color: rgba(255,255,255,0.8); }

.sd-nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    flex: 1;
    padding-top:10px;
}

.sd-nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--sd-muted);
    text-decoration: none;
    transition: color 0.15s;
}

.sd-nav-links a:hover { color: var(--sd-dark); }

.sd-nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.sd-nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    margin-left: auto;
}

.sd-nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--sd-slate);
    border-radius: 2px;
}

/* ===== BUTTONS ===== */
.sd-btn-primary,
a.sd-btn-primary,
a.sd-btn-primary:visited,
a.sd-btn-primary:hover,
a.sd-btn-primary:focus {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: var(--color-primary);
    color: #fff !important;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-small);
    text-decoration: none !important;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-soft);
    transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.sd-btn-primary:hover,
a.sd-btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 0 0 4px rgba(47,79,167,0.2), 0 8px 24px rgba(47,79,167,0.35);
}

.sd-btn-accent,
a.sd-btn-accent,
a.sd-btn-accent:visited,
a.sd-btn-accent:hover,
a.sd-btn-accent:focus {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: var(--color-accent);
    color: #fff !important;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-small);
    text-decoration: none !important;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-soft);
    transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.sd-btn-accent:hover,
a.sd-btn-accent:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 0 0 4px rgba(216,106,44,0.2), 0 8px 24px rgba(216,106,44,0.3);
}

.sd-btn-outline,
a.sd-btn-outline,
a.sd-btn-outline:visited {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: transparent;
    color: var(--sd-slate) !important;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-small);
    border: 1.5px solid var(--sd-border);
    text-decoration: none !important;
    cursor: pointer;
    transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
}

a.sd-btn-outline:hover,
.sd-btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary) !important;
    transform: translateY(-2px);
}

.sd-btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    background: rgba(255,255,255,0.12);
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--sd-radius-sm);
    border: 1.5px solid rgba(255,255,255,0.3);
    text-decoration: none;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
}

.sd-btn-ghost:hover {
    background: rgba(255,255,255,0.2);
    color: #fff;
    text-decoration: none;
    transform: translateY(-1px);
}

.sd-btn-lg { padding: 14px 28px; font-size: 1rem; }
.sd-btn-full { width: 100%; }

/* ===== HERO ===== */
.sd-hero {
    position: relative;
    background: linear-gradient(180deg, var(--hero-start) 0%, var(--hero-end) 100%);
    padding: 140px 0 160px;
    text-align: center;
    overflow: hidden;
}

.sd-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255,255,255,0.055) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
    z-index: 0;
}

.sd-hero-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(59,130,246,0.22) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.sd-hero-orb {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    filter: blur(72px);
    animation: sd-orb-float 8s ease-in-out infinite alternate;
}

.sd-hero-orb-1 {
    width: 480px;
    height: 480px;
    background: radial-gradient(circle, rgba(47,79,167,0.25) 0%, transparent 70%);
    top: -120px;
    left: -120px;
    animation-duration: 9s;
}

.sd-hero-orb-2 {
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(216,106,44,0.15) 0%, transparent 70%);
    bottom: -80px;
    right: -80px;
    animation-duration: 11s;
    animation-direction: alternate-reverse;
}

.sd-hero-orb-3 {
    width: 240px;
    height: 240px;
    background: radial-gradient(circle, rgba(63,99,194,0.12) 0%, transparent 70%);
    top: 30%;
    right: 15%;
    animation-duration: 7s;
}

@keyframes sd-orb-float {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(16px, -20px) scale(1.06); }
}

.sd-hero .sd-container { position: relative; z-index: 1; }

.sd-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(59,130,246,0.18);
    color: #93C5FD;
    border: 1px solid rgba(59,130,246,0.35);
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.sd-hero-headline {
    font-size: clamp(2.6rem, 6vw, 4rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.sd-highlight {
    background: linear-gradient(135deg, #D86A2C, #E8834A);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sd-hero-sub {
    font-size: 1.2rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.75;
}

.sd-hero-ctas {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.sd-hero-platforms {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.sd-platform-label {
    font-size: 0.8rem;
    color: #94A3B8;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.sd-platform-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

.sd-chip {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.18);
    color: #CBD5E1;
    padding: 5px 14px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* ===== PROOF BAR ===== */
.sd-proof-bar {
    background: var(--sd-bg);
    border-bottom: 1px solid var(--sd-border);
    padding: 28px 0;
}

.sd-proof-bar-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
}

.sd-proof-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 40px;
    gap: 2px;
}

.sd-proof-stat strong {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--sd-primary);
}

.sd-proof-stat span {
    font-size: 0.8rem;
    color: var(--sd-muted);
    font-weight: 500;
}

.sd-proof-divider {
    width: 1px;
    height: 40px;
    background: var(--sd-border);
}

/* ===== SECTIONS ===== */
.sd-section {
    padding: 96px 0;
}

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

.sd-section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
}

.sd-section-header h2 {
    font-size: clamp(1.7rem, 3.5vw, 2.4rem);
    font-weight: 800;
    color: var(--sd-dark);
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    line-height: 1.2;
}

.sd-section-header p {
    font-size: 1.05rem;
    color: var(--sd-muted);
    line-height: 1.7;
    margin: 0;
}

/* ===== CARDS 3-COL ===== */
.sd-cards-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.sd-card {
    background: white;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: var(--radius-large);
    padding: 32px 28px;
    box-shadow: var(--shadow-soft);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

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

.sd-card-accent { border-top: 3px solid var(--sd-primary-cta); }

.sd-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.sd-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--sd-dark);
    margin-bottom: 10px;
}

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

/* ===== STEPS ===== */
.sd-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 700px;
    margin: 0 auto;
}

.sd-step {
    display: flex;
    align-items: flex-start;
    gap: 24px;
}

.sd-step-num {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--sd-primary);
    color: #fff;
    font-size: 1.1rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 0 0 6px rgba(30,58,138,0.12);
}

.sd-step-body {
    padding-bottom: 40px;
}

.sd-step-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--sd-dark);
    margin-bottom: 8px;
}

.sd-step-body p {
    font-size: 0.93rem;
    color: var(--sd-muted);
    line-height: 1.65;
    margin: 0;
}

.sd-step-connector {
    width: 2px;
    height: 32px;
    background: linear-gradient(to bottom, var(--sd-primary), rgba(30,58,138,0.15));
    margin-left: 23px;
}

/* ===== FEATURE CARDS 2-COL ===== */
.sd-cards-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.sd-feature-card {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    background: white;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: var(--radius-large);
    padding: 24px;
    box-shadow: var(--shadow-soft);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.sd-feature-card:hover {
    box-shadow: var(--shadow-medium);
    transform: translateY(-3px);
}

.sd-feature-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--sd-primary-light);
    color: var(--sd-primary-cta);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.sd-feature-card h4 {
    font-size: 0.97rem;
    font-weight: 700;
    color: var(--sd-dark);
    margin-bottom: 6px;
}

.sd-feature-card p {
    font-size: 0.88rem;
    color: var(--sd-muted);
    line-height: 1.6;
    margin: 0;
}

/* ===== TESTIMONIALS ===== */
.sd-testimonials {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.sd-testimonial {
    background: var(--sd-bg);
    border: 1px solid var(--sd-border);
    border-radius: var(--sd-radius);
    padding: 28px;
    box-shadow: var(--sd-shadow);
}

.sd-testimonial-stars {
    color: #F59E0B;
    font-size: 1rem;
    letter-spacing: 2px;
    margin-bottom: 14px;
}

.sd-testimonial p {
    font-size: 0.93rem;
    color: var(--sd-slate);
    line-height: 1.7;
    margin-bottom: 20px;
    font-style: italic;
}

.sd-testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sd-testimonial-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--sd-primary), var(--sd-primary-cta));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    flex-shrink: 0;
}

.sd-testimonial-author strong {
    display: block;
    font-size: 0.9rem;
    color: var(--sd-dark);
}

.sd-testimonial-author span {
    font-size: 0.8rem;
    color: var(--sd-muted);
}

/* ===== PRICING ===== */
.sd-pricing-cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
    align-items: start;
}

.sd-pricing-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-large);
    padding: 36px 32px 32px;
    box-shadow: var(--shadow-soft);
    position: relative;
    display: flex;
    flex-direction: column;
}

.sd-pricing-popular {
    border: 2px solid var(--color-primary);
    box-shadow: 0 0 0 3px rgba(47,79,167,0.08), var(--shadow-medium);
    transform: scale(1.03);
}

.sd-pricing-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 16px;
    border-radius: 100px;
    white-space: nowrap;
    letter-spacing: 0.03em;
}

.sd-pricing-tier {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--sd-dark);
    text-align: center;
    margin-bottom: 16px;
}

.sd-pricing-price {
    display: flex;
    align-items: baseline;
    flex-wrap: nowrap;
    gap: 0;
    margin-bottom: 10px;
    line-height: 1;
}

.sd-price-amt {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--sd-dark);
    line-height: 1;
}

.sd-price-unit {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--sd-muted);
    line-height: 1;
}

.sd-price-sep {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--sd-muted);
}

.sd-price-amt2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--sd-dark);
    line-height: 1;
}

.sd-price-extra-tag {
    display: inline-flex;
    align-items: baseline;
    gap: 1px;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 4px 12px;
    margin-bottom: 12px;
}

.sd-price-extra-amt {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--sd-dark);
}

.sd-pricing-divider {
    border: none;
    border-top: 1px solid #e2e8f0;
    margin: 18px 0 20px;
}

.sd-pricing-features {
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.sd-pricing-features li {
    font-size: 0.9rem;
    color: var(--sd-slate);
    padding-left: 24px;
    position: relative;
}

.sd-pricing-features li::before {
    content: '\2714';
    position: absolute;
    left: 0;
    color: var(--sd-green);
    font-size: 0.85rem;
    font-weight: 700;
    top: 1px;
}

.sd-pricing-card .sd-signup-btn {
    margin-top: auto;
}

/* ===== Pricing Calculator ===== */
.sd-pricing-calculator {
    margin-top: 3rem;
    margin-left: auto;
    margin-right: auto;
    max-width: 860px;
    padding: 2rem 2.5rem;
    border-radius: var(--sd-radius);
    background: #ffffff;
    border: 1px solid rgba(0,0,0,0.06);
    box-shadow: var(--sd-shadow-md);
}

/* Badge above title */
.sd-calc-badge-wrap {
    margin-bottom: 0.6rem;
}

.sd-calc-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--sd-primary-light);
    color: var(--sd-primary);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.28rem 0.85rem;
    border-radius: 99px;
}

.sd-pricing-calculator h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--sd-dark);
    margin: 0 0 0.3rem;
}

/* Subtext */
.sd-pricing-subtext {
    margin-bottom: 1.75rem;
    color: #6b7280;
    font-size: 0.9rem;
}

/* Form — 3 equal columns */
.sd-pricing-form {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem 1.5rem;
}

/* Form groups */
.sd-form-group label {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
    color: #374151;
}

.sd-form-group select {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border-radius: var(--sd-radius-sm);
    border: 1.5px solid #d1d5db;
    background: #fff;
    font-size: 0.95rem;
    color: #111827;
    transition: border-color 0.15s, box-shadow 0.15s;
    cursor: pointer;
}

.sd-form-group select:focus {
    outline: none;
    border-color: var(--sd-primary);
    box-shadow: 0 0 0 3px rgba(47, 79, 167, 0.12);
}

/* Total box — branded */
.sd-pricing-total-box {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1.4rem 1.75rem;
    border-radius: var(--sd-radius-sm);
    background: linear-gradient(135deg, var(--sd-primary) 0%, var(--sd-primary-cta-dark) 100%);
    margin-top: 0.25rem;
}

.sd-pricing-total-left {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.sd-pricing-total-label {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.65);
    margin-bottom: 0.2rem;
}

.sd-pricing-total-value {
    font-size: 2rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.1;
}

.sd-pricing-total-formula {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 0.15rem;
}

/* CTA button inside total box */
.sd-calc-get-started {
    flex-shrink: 0;
    background: #ffffff;
    color: var(--sd-primary);
    border: none;
    padding: 0.8rem 1.75rem;
    border-radius: var(--sd-radius-sm);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.15s, transform 0.12s;
    white-space: nowrap;
}

.sd-calc-get-started:hover {
    background: #eef2ff;
    transform: translateY(-1px);
}

/* Responsive */
@media (max-width: 680px) {
    .sd-pricing-form {
        grid-template-columns: 1fr;
    }

    .sd-pricing-total-box {
        flex-direction: column;
        align-items: flex-start;
    }

    .sd-calc-get-started {
        width: 100%;
        text-align: center;
    }
}

/* ===== FAQ ===== */
.sd-faq {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--sd-border);
    border-radius: var(--sd-radius);
    overflow: hidden;
    box-shadow: var(--sd-shadow);
}

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

.sd-faq-item:last-child { border-bottom: none; }

.sd-faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    background: none;
    border: none;
    text-align: left;
    font-size: 0.97rem;
    font-weight: 600;
    color: var(--sd-dark);
    cursor: pointer;
    transition: background 0.15s;
}

.sd-faq-question:hover { background: var(--sd-bg-alt); }

.sd-faq-question svg {
    flex-shrink: 0;
    color: var(--sd-muted);
    transition: transform 0.2s;
}

.sd-faq-item.open .sd-faq-question svg { transform: rotate(180deg); }

.sd-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.2s;
}

.sd-faq-item.open .sd-faq-answer {
    max-height: 200px;
    padding: 0 24px 20px;
}

.sd-faq-answer p {
    font-size: 0.92rem;
    color: var(--sd-muted);
    line-height: 1.7;
    margin: 0;
}

/* ===== CTA SECTION ===== */
.sd-cta-section {
    background: linear-gradient(180deg, var(--hero-start) 0%, var(--hero-end) 100%);
    padding: 112px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.sd-cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 70% 80% at 50% 50%, rgba(47,79,167,0.25) 0%, transparent 70%);
    pointer-events: none;
}

.sd-cta-inner { position: relative; z-index: 1; }

.sd-cta-section h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.sd-cta-section p {
    font-size: 1.05rem;
    color: #94A3B8;
    max-width: 480px;
    margin: 0 auto 36px;
    line-height: 1.7;
}

.sd-waitlist-form { max-width: 560px; margin: 0 auto; }

.sd-waitlist-inputs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.sd-waitlist-inputs input {
    flex: 1;
    min-width: 160px;
    padding: 12px 16px;
    border-radius: var(--sd-radius-sm);
    border: 1.5px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.07);
    color: #fff;
    font-size: 0.93rem;
    outline: none;
    transition: border-color 0.15s;
    font-family: inherit;
}

.sd-waitlist-inputs input::placeholder { color: #64748B; }

.sd-waitlist-inputs input:focus {
    border-color: rgba(249,115,22,0.5);
    background: rgba(255,255,255,0.1);
}

.sd-waitlist-note {
    font-size: 0.8rem;
    color: #475569;
    margin: 0;
}

/* ===== FOOTER ===== */
.sd-footer {
    background: linear-gradient(180deg, #0F172A 0%, #0B1220 100%);
    padding: 96px 0 0;
    border-top: 1px solid rgba(255,255,255,0.08);
    position: relative;
    color: white;
}

.sd-footer::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    right: 0;
    height: 40px;
    background: linear-gradient(180deg, transparent, rgba(0,0,0,0.25));
    pointer-events: none;
}

.sd-footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 48px;
    flex-wrap: wrap;
    padding-bottom: 80px;
}

.sd-footer-brand {
    max-width: 280px;
}

.sd-footer-brand .sd-brand {
    color: #fff;
    margin-bottom: 12px;
    display: inline-flex;
}

.sd-footer-brand p {
    font-size: 0.9rem;
    color: #A8B3C7;
    line-height: 1.7;
    margin: 0;
}

.sd-footer-links {
    display: flex;
    gap: 48px;
    flex-wrap: wrap;
}

.sd-footer-col {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sd-footer-col h5 {
    font-size: 0.8rem;
    font-weight: 700;
    color: #E2E8F0;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0 0 6px;
}

.sd-footer-col a {
    font-size: 0.9rem;
    color: #94A3B8;
    text-decoration: none;
    transition: color 0.2s ease;
    margin-bottom: 4px;
}

.sd-footer-col a:hover { color: #F1F5F9; }

.sd-footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 36px 0;
    text-align: center;
}

    .sd-footer-bottom p {
        font-size: 0.9rem;
        color: #A8B3C7;
        margin: 0;
    }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .sd-cards-3 { grid-template-columns: 1fr; }
    .sd-cards-2 { grid-template-columns: 1fr; }
    .sd-pricing-cards { grid-template-columns: 1fr; }
    .sd-pricing-popular { transform: none; }
    .sd-testimonials { grid-template-columns: 1fr; }
    .sd-proof-bar-inner { gap: 16px; }
    .sd-proof-divider { display: none; }
    .sd-proof-stat { padding: 8px 16px; }
    .sd-footer-inner { flex-direction: column; }
}

@media (max-width: 768px) {
    .sd-navbar-inner { gap: 16px; }
    .sd-nav-links, .sd-nav-actions { display: none; }
    .sd-nav-links.open, .sd-nav-actions.open { display: flex; }
    .sd-nav-toggle { display: flex; }
    .sd-navbar-inner { flex-wrap: wrap; height: auto; padding: 12px 24px; }
    .sd-nav-links.open {
        flex-direction: column;
        width: 100%;
        gap: 12px;
        padding: 12px 0;
    }
    .sd-nav-actions.open {
        flex-direction: column;
        width: 100%;
        gap: 8px;
        padding-bottom: 12px;
    }
    .sd-nav-actions.open .sd-btn-primary,
    .sd-nav-actions.open .sd-btn-outline { width: 100%; }
    .sd-hero { padding: 72px 0 56px; }
    .sd-section { padding: 64px 0; }
    .sd-section-header { margin-bottom: 48px; }
    .sd-hero-ctas { flex-direction: column; align-items: stretch; padding: 0 24px; }
    .sd-waitlist-inputs { flex-direction: column; }
    .sd-footer-links { gap: 28px; }
}

@media (max-width: 480px) {
    .sd-container { padding: 0 16px; }
}

/* ===== FADE-IN ON SCROLL ===== */
.sd-fade-in {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.sd-fade-in.sd-visible {
    opacity: 1;
    transform: none;
}

.sd-fade-in.sd-delay-1 { transition-delay: 0.1s; }
.sd-fade-in.sd-delay-2 { transition-delay: 0.2s; }
.sd-fade-in.sd-delay-3 { transition-delay: 0.3s; }
.sd-fade-in.sd-delay-4 { transition-delay: 0.4s; }
.sd-fade-in.sd-delay-5 { transition-delay: 0.5s; }

@media (prefers-reduced-motion: reduce) {
    .sd-fade-in { opacity: 1; transform: none; transition: none; }
    .sd-hero-orb { animation: none; }
    @keyframes sd-orb-float { from { } to { } }
}

/* ===== MODAL ===== */
.sd-modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(2px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.sd-modal-overlay.sd-modal-open {
    display: flex;
    animation: sd-modal-fade-in 0.2s ease;
}

@keyframes sd-modal-fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.sd-modal {
    background: white;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-strong);
    width: 100%;
    max-width: 460px;
    padding: 40px 36px 36px;
    position: relative;
    animation: sd-modal-slide-in 0.22s ease;
}

@keyframes sd-modal-slide-in {
    from { transform: translateY(12px); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
}

.sd-modal-close {
    position: absolute;
    top: 14px;
    right: 16px;
    background: none;
    border: none;
    font-size: 22px;
    line-height: 1;
    color: var(--sd-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: color 0.15s, background 0.15s;
}

.sd-modal-close:hover {
    color: var(--sd-slate);
    background: var(--sd-bg-alt);
}

.sd-modal-header {
    margin-bottom: 24px;
}

.sd-modal-header h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--sd-dark);
    margin: 0 0 6px;
}

.sd-modal-header p {
    font-size: 0.9rem;
    color: var(--sd-muted);
    margin: 0;
}

/* ===== FORM GROUPS (modal + login) ===== */
.sd-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.sd-form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 16px;
}

.sd-form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--sd-slate);
}

.sd-form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid #CBD5E1;
    border-radius: var(--radius-small);
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--color-text);
    background: white;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    outline: none;
}

.sd-form-group input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(47,79,167,0.18);
}

.sd-form-group input::placeholder {
    color: #94a3b8;
}

/* ===== AUTH PAGES ===== */
.sd-auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sd-bg-alt);
    padding: 40px 24px;
}

.sd-auth-card {
    background: var(--sd-bg);
    border-radius: var(--sd-radius);
    box-shadow: var(--sd-shadow-lg);
    padding: 40px 36px;
    width: 100%;
    max-width: 440px;
}

.sd-auth-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 28px;
}

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

.sd-auth-card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sd-dark);
    text-align: center;
    margin: 0 0 6px;
}

.sd-auth-card .sd-auth-sub {
    text-align: center;
    color: var(--sd-muted);
    font-size: 0.9rem;
    margin: 0 0 28px;
}

.sd-form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.sd-form-check input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--sd-primary-cta);
    cursor: pointer;
}

.sd-form-check label {
    font-size: 0.875rem;
    color: var(--sd-muted);
    cursor: pointer;
    user-select: none;
}

.sd-auth-error {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
    border-radius: var(--sd-radius-sm);
    padding: 10px 14px;
    font-size: 0.875rem;
    margin-bottom: 16px;
    display: none;
}

.sd-auth-error.visible { display: block; }

/* ===== MODAL + FORM RESPONSIVE ===== */
@media (max-width: 768px) {
    .sd-modal { padding: 28px 20px 24px; }
    .sd-form-row { grid-template-columns: 1fr; }
}

/* ===== BUTTON SPINNER ===== */
.sd-btn-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: sd-spin 0.65s linear infinite;
    vertical-align: middle;
    margin-right: 8px;
    flex-shrink: 0;
}

.sd-btn-outline .sd-btn-spinner,
.sd-btn-ghost .sd-btn-spinner {
    border-color: rgba(59,130,246,0.3);
    border-top-color: #3b82f6;
}

@keyframes sd-spin {
    to { transform: rotate(360deg); }
}



/* ===== OpenTool API additions ===== */
/* 2-tier pricing grid (Free / Pro only) */
.sd-pricing-cards.sd-pricing-cards-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
    gap: 2rem;
}

@media (max-width: 680px) {
    .sd-pricing-cards.sd-pricing-cards-2 { grid-template-columns: 1fr; }
}

/* 4-tier pricing grid (Free / Pro / Team / Enterprise) */
.sd-pricing-cards.sd-pricing-cards-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
}

@media (max-width: 1100px) {
    .sd-pricing-cards.sd-pricing-cards-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
    .sd-pricing-cards.sd-pricing-cards-4 { grid-template-columns: 1fr; }
}

/* Excluded feature row (e.g. "No streaming" on Free tier) */
.sd-pricing-features li.sd-feature-muted {
    color: #94A3B8;
}

.sd-pricing-features li.sd-feature-muted::before {
    content: '\2715';
    color: #94A3B8;
}