/* ============================================
   ZENDER.ID — Professional Blue Gradient Theme
   ============================================ */

/* --- CSS Variables --- */
:root {
    --blue-50: #eff6ff;
    --blue-100: #dbeafe;
    --blue-200: #bfdbfe;
    --blue-300: #93c5fd;
    --blue-400: #60a5fa;
    --blue-500: #3b82f6;
    --blue-600: #2563eb;
    --blue-700: #1d4ed8;
    --blue-800: #1e40af;
    --blue-900: #1e3a8a;
    --blue-950: #0f172a;
    --cyan-400: #22d3ee;
    --cyan-500: #06b6d4;
    --gradient-main: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #06b6d4 100%);
    --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e3a8a 40%, #1d4ed8 70%, #0e7490 100%);
    --gradient-text: linear-gradient(135deg, #3b82f6, #06b6d4);
    --gradient-card: linear-gradient(145deg, rgba(30,64,175,0.06) 0%, rgba(6,182,212,0.06) 100%);
    --gradient-btn: linear-gradient(135deg, #2563eb 0%, #1d4ed8 50%, #06b6d4 100%);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);
    --shadow-blue: 0 8px 32px rgba(37,99,235,0.18);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
    color: #334155;
    background: #ffffff;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.25;
    color: var(--blue-950);
    margin: 0;
}

/* --- Container --- */
.zd-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Buttons --- */
.zd-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--gradient-btn);
    color: #fff;
    font-weight: 600;
    font-size: 15px;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-blue);
    background-size: 200% 200%;
    background-position: left center;
}
.zd-btn-primary:hover {
    background-position: right center;
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(37,99,235,0.3);
    color: #fff;
}
.zd-btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: transparent;
    color: var(--blue-700);
    font-weight: 600;
    font-size: 15px;
    border-radius: var(--radius-full);
    border: 2px solid var(--blue-200);
    cursor: pointer;
    transition: var(--transition);
}
.zd-btn-outline:hover {
    border-color: var(--blue-500);
    background: var(--blue-50);
    transform: translateY(-2px);
}
.zd-btn-ghost {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    color: var(--blue-700);
    font-weight: 600;
    font-size: 14px;
    border-radius: var(--radius-full);
    transition: var(--transition);
}
.zd-btn-ghost:hover { background: var(--blue-50); }
.zd-btn-lg { padding: 16px 36px; font-size: 16px; }
.zd-btn-block { display: flex; justify-content: center; width: 100%; }
.zd-btn-white {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 36px;
    background: #fff;
    color: var(--blue-700);
    font-weight: 700;
    font-size: 16px;
    border-radius: var(--radius-full);
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.zd-btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,0,0,0.2); color: var(--blue-700); }
.zd-btn-white-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 36px;
    background: transparent;
    color: #fff;
    font-weight: 600;
    font-size: 16px;
    border-radius: var(--radius-full);
    border: 2px solid rgba(255,255,255,0.4);
    transition: var(--transition);
}
.zd-btn-white-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); color: #fff; transform: translateY(-2px); }

/* --- Gradient Text --- */
.zd-gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Section Header --- */
.zd-section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
}
.zd-section-label {
    display: inline-block;
    padding: 6px 18px;
    background: var(--blue-50);
    color: var(--blue-600);
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
    border: 1px solid var(--blue-100);
}
.zd-section-header h2 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 16px;
}
.zd-section-header p {
    font-size: 17px;
    color: #64748b;
    line-height: 1.7;
}

/* ===========================
   NAVBAR
   =========================== */
.zd-navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}
.zd-navbar.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    padding: 10px 0;
}
.zd-navbar .zd-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.zd-logo img {
    height: 38px;
    transition: filter .25s ease;
    filter: brightness(0) invert(1);
}
.zd-navbar.scrolled .zd-logo img {
    filter: none;
}
.zd-nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}
.zd-nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}
.zd-nav-links a {
    padding: 8px 16px;
    font-weight: 500;
    font-size: 15px;
    color: rgba(255,255,255,0.85);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.zd-nav-links a:hover,
.zd-nav-links a.active { color: #fff; background: rgba(255,255,255,0.12); }
.zd-navbar.scrolled .zd-nav-links a { color: #475569; }
.zd-navbar.scrolled .zd-nav-links a:hover,
.zd-navbar.scrolled .zd-nav-links a.active { color: var(--blue-700); background: var(--blue-50); }
.zd-nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 16px;
}
.zd-navbar .zd-btn-ghost { color: rgba(255,255,255,0.9); }
.zd-navbar .zd-btn-ghost:hover { background: rgba(255,255,255,0.12); color: #fff; }
.zd-navbar.scrolled .zd-btn-ghost { color: var(--blue-700); }
.zd-navbar.scrolled .zd-btn-ghost:hover { background: var(--blue-50); }
.zd-navbar .zd-nav-actions .zd-btn-primary {
    padding: 10px 24px;
    font-size: 14px;
    box-shadow: none;
}
.zd-nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.zd-nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: var(--transition);
}
.zd-navbar.scrolled .zd-nav-toggle span { background: var(--blue-900); }
.zd-nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.zd-nav-toggle.active span:nth-child(2) { opacity: 0; }
.zd-nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===========================
   HERO
   =========================== */
.zd-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    padding: 120px 0 80px;
    overflow: hidden;
}
.zd-hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.zd-hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}
.zd-hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}
.zd-hero-orb-1 { width: 500px; height: 500px; background: #2563eb; top: -100px; right: -100px; }
.zd-hero-orb-2 { width: 400px; height: 400px; background: #06b6d4; bottom: -100px; left: -100px; }
.zd-hero-orb-3 { width: 300px; height: 300px; background: #7c3aed; top: 50%; left: 50%; transform: translate(-50%, -50%); opacity: 0.2; }

.zd-hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}
.zd-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-full);
    color: var(--cyan-400);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}
.zd-hero-text h1 {
    font-size: 48px;
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
    margin-bottom: 24px;
}
.zd-hero-text h1 .zd-gradient-text {
    background: linear-gradient(135deg, #60a5fa, #22d3ee);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.zd-hero-text p {
    font-size: 18px;
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 520px;
}
.zd-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
}
.zd-hero-actions .zd-btn-primary {
    background: linear-gradient(135deg, #3b82f6, #06b6d4);
    box-shadow: 0 8px 30px rgba(59,130,246,0.4);
}
.zd-hero-actions .zd-btn-outline {
    border-color: rgba(255,255,255,0.3);
    color: #fff;
}
.zd-hero-actions .zd-btn-outline:hover {
    border-color: rgba(255,255,255,0.6);
    background: rgba(255,255,255,0.08);
}
.zd-hero-trust {
    display: flex;
    align-items: center;
    gap: 14px;
}
.zd-hero-trust-avatars {
    display: flex;
}
.zd-hero-trust-avatars img {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.3);
    margin-left: -10px;
    object-fit: cover;
}
.zd-hero-trust-avatars img:first-child { margin-left: 0; }
.zd-hero-trust span { color: rgba(255,255,255,0.6); font-size: 14px; }
.zd-hero-trust strong { color: #fff; }
.zd-hero-visual { position: relative; }
.zd-hero-image-wrapper {
    position: relative;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-xl);
    padding: 20px;
    backdrop-filter: blur(10px);
}
.zd-hero-image-wrapper img {
    border-radius: var(--radius-lg);
    width: 100%;
}
.zd-floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-md);
    padding: 14px 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    animation: float 6s ease-in-out infinite;
}
.zd-floating-card i { font-size: 20px; color: var(--blue-500); }
.zd-floating-card strong { display: block; font-size: 14px; color: var(--blue-900); line-height: 1.3; }
.zd-floating-card span { font-size: 12px; color: #64748b; }
.zd-fc-1 { bottom: 20%; left: -30px; }
.zd-fc-2 { top: 15%; right: -30px; animation-delay: -3s; }
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* ===========================
   FEATURES
   =========================== */
.zd-features {
    padding: 100px 0;
    background: #fff;
}
.zd-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.zd-feature-card {
    padding: 36px 32px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.zd-feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-btn);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}
.zd-feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--blue-200);
}
.zd-feature-card:hover::before { transform: scaleX(1); }
.zd-feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-card);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    border: 1px solid var(--blue-100);
}
.zd-feature-icon i { font-size: 22px; color: var(--blue-600); }
.zd-feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.zd-feature-card p { color: #64748b; font-size: 15px; line-height: 1.7; }

/* ===========================
   HOW IT WORKS (Steps)
   =========================== */
.zd-how-it-works {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--blue-50) 0%, #fff 100%);
}
.zd-steps {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}
.zd-step {
    display: flex;
    align-items: center;
    gap: 32px;
    background: #fff;
    padding: 36px 40px;
    border-radius: var(--radius-lg);
    border: 1px solid #e2e8f0;
    transition: var(--transition);
    position: relative;
}
.zd-step:hover {
    border-color: var(--blue-300);
    box-shadow: var(--shadow-lg);
    transform: translateX(8px);
}
.zd-step-number {
    font-size: 48px;
    font-weight: 900;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    flex-shrink: 0;
    line-height: 1;
}
.zd-step-content { flex: 1; }
.zd-step-content h3 { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
.zd-step-content p { color: #64748b; font-size: 15px; }
.zd-step-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-btn);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}
.zd-step-icon i { font-size: 20px; color: #fff; }

/* ===========================
   STATS
   =========================== */
.zd-stats {
    position: relative;
    padding: 80px 0;
    background: var(--gradient-main);
    overflow: hidden;
}
.zd-stats-bg {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(6,182,212,0.15) 0%, transparent 50%);
}
.zd-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    position: relative;
    z-index: 2;
    text-align: center;
}
.zd-stat-item { color: #fff; }
.zd-counter-number {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 4px;
    line-height: 1.2;
}
.zd-stat-item span { font-size: 15px; color: rgba(255,255,255,0.7); font-weight: 500; }

/* ===========================
   USE CASES
   =========================== */
.zd-usecases {
    padding: 100px 0;
    background: #fff;
}
.zd-usecases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.zd-usecase-card {
    padding: 40px 32px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
}
.zd-usecase-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--blue-200);
}
.zd-usecase-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-main);
    border-radius: var(--radius-lg);
    margin: 0 auto 24px;
}
.zd-usecase-icon i { font-size: 28px; color: #fff; }
.zd-usecase-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.zd-usecase-card p { color: #64748b; font-size: 15px; line-height: 1.7; margin-bottom: 20px; }
.zd-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--blue-600);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}
.zd-link:hover { gap: 10px; color: var(--blue-700); }

/* ===========================
   CLIENTS
   =========================== */
.zd-clients {
    padding: 80px 0;
    background: var(--blue-50);
}
.zd-clients-marquee {
    overflow: hidden;
    mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 15%, #000 85%, transparent);
}
.zd-clients-track {
    display: flex;
    align-items: center;
    gap: 60px;
    animation: marquee 25s linear infinite;
    width: max-content;
}
.zd-clients-track img {
    height: 48px;
    opacity: 0.5;
    filter: grayscale(100%);
    transition: var(--transition);
}
.zd-clients-track img:hover { opacity: 1; filter: none; }
@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ===========================
   PRICING
   =========================== */
.zd-pricing {
    padding: 100px 0;
    background: #fff;
}
.zd-pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    align-items: start;
}
.zd-pricing-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition);
    position: relative;
}
.zd-pricing-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}
.zd-pricing-popular {
    border: 2px solid var(--blue-500);
    box-shadow: var(--shadow-blue);
    transform: scale(1.04);
}
.zd-pricing-popular:hover { transform: scale(1.04) translateY(-6px); }
.zd-pricing-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 24px;
    background: var(--gradient-btn);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: var(--radius-full);
    box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}
.zd-pricing-plan {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--blue-500);
    display: block;
    margin-bottom: 16px;
}
.zd-pricing-price {
    margin-bottom: 32px;
    line-height: 1;
}
.zd-pricing-price sup {
    font-size: 18px;
    font-weight: 600;
    color: var(--blue-900);
    vertical-align: super;
}
.zd-pricing-price span {
    font-size: 42px;
    font-weight: 800;
    color: var(--blue-900);
}
.zd-pricing-price sub {
    font-size: 14px;
    font-weight: 500;
    color: #94a3b8;
}
.zd-pricing-features {
    text-align: left;
    margin-bottom: 32px;
}
.zd-pricing-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    font-size: 15px;
    color: #475569;
    border-bottom: 1px solid #f1f5f9;
}
.zd-pricing-features li:last-child { border-bottom: none; }
.zd-pricing-features li i { font-size: 14px; }
.zd-pricing-features li .fa-check { color: var(--blue-500); }
.zd-pricing-features li .fa-times { color: #cbd5e1; }
.zd-pricing-features li.disabled { color: #94a3b8; }

/* ===========================
   TESTIMONIALS
   =========================== */
.zd-testimonials {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff 0%, var(--blue-50) 100%);
}
.zd-testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.zd-testimonial-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-xl);
    padding: 36px;
    transition: var(--transition);
}
.zd-testimonial-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--blue-200);
}
.zd-testimonial-stars { margin-bottom: 16px; }
.zd-testimonial-stars i { color: #fbbf24; font-size: 14px; }
.zd-testimonial-card p {
    color: #475569;
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
}
.zd-testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}
.zd-testimonial-author img {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--blue-100);
}
.zd-testimonial-author strong { display: block; font-size: 15px; color: var(--blue-900); }
.zd-testimonial-author span { font-size: 13px; color: #94a3b8; }

/* ===========================
   CTA
   =========================== */
.zd-cta {
    position: relative;
    padding: 100px 0;
    background: var(--gradient-hero);
    overflow: hidden;
}
.zd-cta-bg { position: absolute; inset: 0; pointer-events: none; }
.zd-cta-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
}
.zd-cta-orb-1 { width: 500px; height: 500px; background: #3b82f6; top: -200px; right: -100px; }
.zd-cta-orb-2 { width: 400px; height: 400px; background: #06b6d4; bottom: -200px; left: -100px; }
.zd-cta-content {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 640px;
    margin: 0 auto;
}
.zd-cta-content h2 {
    font-size: 40px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}
.zd-cta-content p {
    font-size: 18px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 40px;
    line-height: 1.7;
}
.zd-cta-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
}

/* ===========================
   FOOTER
   =========================== */
.zd-footer {
    background: var(--blue-950);
    color: rgba(255,255,255,0.7);
    padding-top: 80px;
    position: relative;
}
.zd-footer-wave {
    position: absolute;
    top: -1px;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}
.zd-footer-wave svg { width: 100%; height: 60px; }
.zd-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.zd-footer-logo { height: 36px; margin-bottom: 20px; }
.zd-footer-about p { font-size: 15px; line-height: 1.7; margin-bottom: 24px; }
.zd-footer-contact { display: flex; flex-direction: column; gap: 12px; }
.zd-footer-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}
.zd-footer-contact-item i { color: var(--blue-400); font-size: 14px; }
.zd-footer-contact-item a { color: rgba(255,255,255,0.7); }
.zd-footer-contact-item a:hover { color: #fff; }
.zd-footer-links h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
}
.zd-footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.zd-footer-links a { font-size: 15px; color: rgba(255,255,255,0.6); transition: var(--transition); }
.zd-footer-links a:hover { color: #fff; padding-left: 4px; }
.zd-footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 14px;
    color: rgba(255,255,255,0.4);
}
.zd-footer-bottom a { color: var(--blue-400); }
.zd-footer-bottom a:hover { color: #fff; }

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1024px) {
    .zd-hero-content { grid-template-columns: 1fr; gap: 40px; }
    .zd-hero-visual { order: -1; max-width: 500px; margin: 0 auto; }
    .zd-hero-text { text-align: center; }
    .zd-hero-text h1 { font-size: 38px; }
    .zd-hero-text p { margin: 0 auto 36px; }
    .zd-hero-actions { justify-content: center; }
    .zd-hero-trust { justify-content: center; }
    .zd-features-grid { grid-template-columns: repeat(2, 1fr); }
    .zd-usecases-grid { grid-template-columns: repeat(2, 1fr); }
    .zd-pricing-grid { grid-template-columns: repeat(2, 1fr); }
    .zd-pricing-popular { transform: scale(1); }
    .zd-pricing-popular:hover { transform: translateY(-6px); }
    .zd-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .zd-footer-grid { grid-template-columns: 1fr 1fr; }
    .zd-section-header h2 { font-size: 30px; }
    .zd-cta-content h2 { font-size: 32px; }
}

@media (max-width: 768px) {
    .zd-nav-toggle { display: flex; }
    .zd-nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #fff;
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-xl);
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    }
    .zd-nav-menu.active { display: flex; }
    .zd-nav-links { flex-direction: column; width: 100%; }
    .zd-nav-links a { color: #334155; padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
    .zd-nav-links a:hover { background: var(--blue-50); color: var(--blue-700); }
    .zd-nav-actions { margin-left: 0; width: 100%; flex-direction: column; }
    .zd-nav-actions .zd-btn-ghost { color: var(--blue-700); justify-content: center; }
    .zd-nav-actions .zd-btn-primary { justify-content: center; }

    .zd-hero { padding: 100px 0 60px; }
    .zd-hero-text h1 { font-size: 30px; }
    .zd-hero-text p { font-size: 16px; }
    .zd-floating-card { display: none; }

    .zd-features-grid { grid-template-columns: 1fr; }
    .zd-step { flex-direction: column; text-align: center; gap: 16px; padding: 28px 24px; }
    .zd-step:hover { transform: none; }
    .zd-usecases-grid { grid-template-columns: 1fr; }
    .zd-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .zd-counter-number { font-size: 32px; }
    .zd-pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .zd-pricing-popular { transform: scale(1); }
    .zd-pricing-popular:hover { transform: translateY(-6px); }
    .zd-testimonials-grid { grid-template-columns: 1fr; }
    .zd-footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .zd-cta-content h2 { font-size: 28px; }
    .zd-cta-content p { font-size: 16px; }
    .zd-section-header h2 { font-size: 26px; }
    .zd-section-header p { font-size: 15px; }
}

@media (max-width: 480px) {
    .zd-hero-text h1 { font-size: 26px; }
    .zd-hero-badge { font-size: 11px; padding: 6px 14px; }
    .zd-btn-lg { padding: 14px 28px; font-size: 15px; }
    .zd-cta-actions { flex-direction: column; align-items: center; }
    .zd-hero-actions { flex-direction: column; align-items: center; }
}

/* ===========================
   PAGE HEADER (subpages)
   =========================== */
.zd-page-header {
    position: relative;
    padding: 160px 0 80px;
    background: var(--gradient-hero);
    overflow: hidden;
    text-align: center;
}
.zd-page-header-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.zd-page-header-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    margin: 0 auto;
}
.zd-page-header-content h1 {
    font-size: 42px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
    line-height: 1.2;
}
.zd-page-header-content p {
    font-size: 18px;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
}

/* ===========================
   ABOUT PAGE
   =========================== */
.zd-about-content {
    padding: 80px 0;
}
.zd-about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.zd-about-text h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 20px;
}
.zd-about-text p {
    color: #64748b;
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 16px;
}
.zd-about-highlights {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.zd-about-highlight-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--blue-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--blue-100);
}
.zd-about-highlight-item i {
    font-size: 20px;
    color: var(--blue-600);
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}
.zd-about-highlight-item strong {
    display: block;
    font-size: 15px;
    color: var(--blue-900);
}
.zd-about-highlight-item span {
    font-size: 13px;
    color: #64748b;
}
.zd-about-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid #e2e8f0;
    box-shadow: var(--shadow-xl);
}
.zd-about-image img {
    width: 100%;
    border-radius: var(--radius-xl);
}

/* ===========================
   ARTICLE PAGE (SMS, Terms, Privacy)
   =========================== */
.zd-article-section {
    padding: 80px 0;
}
.zd-article-content {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-xl);
    padding: 48px;
    box-shadow: var(--shadow-md);
}
.zd-article-content h2 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 20px;
}
.zd-article-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-top: 36px;
    margin-bottom: 16px;
    color: var(--blue-800);
}
.zd-article-content p {
    color: #475569;
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 16px;
}
.zd-article-content ul {
    padding-left: 0;
    margin-bottom: 24px;
}
.zd-article-content ul li {
    padding: 10px 0;
    border-bottom: 1px solid #f1f5f9;
    font-size: 15px;
    color: #475569;
    line-height: 1.7;
}
.zd-article-content ul li:last-child {
    border-bottom: none;
}
.zd-article-content ul li strong {
    color: var(--blue-900);
}

/* Article features grid (SMS pages) */
.zd-article-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 24px 0 32px;
}
.zd-article-feature {
    padding: 24px;
    background: var(--blue-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--blue-100);
}
.zd-article-feature i {
    font-size: 24px;
    color: var(--blue-600);
    margin-bottom: 12px;
    display: block;
}
.zd-article-feature h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--blue-900);
}
.zd-article-feature p {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 0;
    line-height: 1.6;
}

/* ===========================
   TERMS LIST
   =========================== */
.zd-terms-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin: 24px 0;
}
.zd-terms-item {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: #fef2f2;
    border-radius: var(--radius-md);
    border: 1px solid #fee2e2;
}
.zd-terms-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ef4444;
    color: #fff;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    font-size: 14px;
}
.zd-terms-item h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
    color: #991b1b;
}
.zd-terms-item p {
    font-size: 14px;
    color: #7f1d1d;
    margin-bottom: 0;
    line-height: 1.6;
}

/* ===========================
   FAQ
   =========================== */
.zd-faq {
    padding: 80px 0;
    background: linear-gradient(180deg, #fff 0%, var(--blue-50) 100%);
}
.zd-faq-list {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.zd-faq-item {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}
.zd-faq-item.active {
    border-color: var(--blue-300);
    box-shadow: var(--shadow-md);
}
.zd-faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 20px 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-family: var(--font);
    font-size: 16px;
    font-weight: 600;
    color: var(--blue-900);
    text-align: left;
    transition: var(--transition);
}
.zd-faq-question:hover {
    color: var(--blue-600);
}
.zd-faq-question i {
    font-size: 14px;
    color: var(--blue-400);
    transition: var(--transition);
    flex-shrink: 0;
}
.zd-faq-item.active .zd-faq-question i {
    transform: rotate(180deg);
}
.zd-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}
.zd-faq-item.active .zd-faq-answer {
    max-height: 200px;
    padding: 0 24px 20px;
}
.zd-faq-answer p {
    color: #64748b;
    font-size: 15px;
    line-height: 1.7;
}

/* ===========================
   SUBPAGE RESPONSIVE
   =========================== */
@media (max-width: 1024px) {
    .zd-about-grid { grid-template-columns: 1fr; gap: 40px; }
    .zd-about-image { order: -1; max-width: 500px; margin: 0 auto; }
    .zd-page-header-content h1 { font-size: 34px; }
}
@media (max-width: 768px) {
    .zd-page-header { padding: 120px 0 60px; }
    .zd-page-header-content h1 { font-size: 28px; }
    .zd-page-header-content p { font-size: 16px; }
    .zd-article-content { padding: 28px 20px; }
    .zd-article-features { grid-template-columns: 1fr; }
    .zd-about-text h2 { font-size: 26px; }
}
@media (max-width: 480px) {
    .zd-page-header-content h1 { font-size: 24px; }
    .zd-article-content h2 { font-size: 22px; }
}