:root {
    --primary: #1e80ff;
    --primary-hover: #0068ff;
    --bg: #ffffff;
    --text-main: #1d2129;
    --text-muted: #4e5969;
    --card-bg: #ffffff;
    --section-bg: #f9fafb;
    --border: #f2f3f5;
    --navbar-height: 72px;
    --shadow-soft: 0 10px 30px rgba(0,0,0,0.05);
    --shadow-strong: 0 20px 50px rgba(0,0,0,0.1);
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    transition: all 0.3s;
}

/* Navbar */
.navbar {
    height: var(--navbar-height);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--primary);
}

.logo-img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

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

.nav-links a {
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.95rem;
}

.nav-btn {
    background: var(--primary);
    color: white !important;
    padding: 10px 24px;
    border-radius: 10px;
}

/* Hero Section */
.hero {
    padding-top: calc(var(--navbar-height) + 80px);
    padding-bottom: 80px;
    background: radial-gradient(circle at 100% 0%, #eef6ff 0%, #ffffff 50%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-text {
    flex: 1;
}

h1 {
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -2px;
}

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

.hero-desc {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.hero-video {
    flex: 1.2;
}

.ui-mockup {
    background: white;
    padding: 12px;
    border-radius: 24px;
    box-shadow: var(--shadow-strong);
}

.real-ui-img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    display: block;
}

.btn-primary {
    background: var(--primary);
    color: white;
    padding: 16px 36px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 10px 20px rgba(30, 128, 255, 0.2);
}

.btn-secondary {
    background: white;
    color: var(--text-main);
    padding: 16px 36px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    border: 1px solid #e5e6eb;
}

/* Comparison Table */
.comparison {
    padding: 100px 24px;
    background: var(--section-bg);
}

.comp-table-container {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: 24px;
    padding: 24px;
    box-shadow: var(--shadow-soft);
}

.comp-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.comp-table th, .comp-table td {
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

.comp-table th {
    font-size: 1.1rem;
    font-weight: 800;
}

.comp-table .bad { color: #f53f3f; }
.comp-table .good { color: var(--primary); }

/* Manual Rich Section */
.manual-rich {
    padding: 100px 24px;
}

.manual-step-item {
    max-width: 1100px;
    margin: 0 auto 80px;
    display: flex;
    align-items: center;
    gap: 60px;
}

.manual-step-item:nth-child(even) {
    flex-direction: row-reverse;
}

.m-step-text {
    flex: 1;
}

.m-step-text h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--primary);
}

.m-step-text p, .m-step-text li {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.m-step-text ul {
    padding-left: 20px;
    margin-bottom: 20px;
}

.tip-box {
    background: #eef6ff;
    border-left: 4px solid var(--primary);
    padding: 16px;
    border-radius: 8px;
    font-size: 0.95rem;
    color: var(--primary);
    margin-top: 20px;
}

.m-step-img {
    flex: 1.2;
}

.step-screenshot {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border);
}

/* Features */
.features {
    padding: 100px 24px;
    background: var(--section-bg);
}

.feature-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    padding: 40px;
    background: var(--card-bg);
    border-radius: 24px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-soft);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-8px);
}

/* Section Common */
.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 800;
}

/* CTA */
.cta {
    padding: 100px 24px;
}

.cta-card {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--primary);
    color: white;
    padding: 80px 40px;
    border-radius: 40px;
    text-align: center;
}

.badge {
    background: rgba(255,255,255,0.2);
    display: inline-block;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.btn-large {
    display: inline-block;
    background: white;
    color: var(--primary);
    padding: 20px 60px;
    border-radius: 16px;
    font-weight: 800;
    font-size: 1.4rem;
    margin: 32px 0;
}

/* FAQ */
.faq {
    padding: 100px 24px;
    background: var(--section-bg);
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.faq-item h4 {
    font-size: 1.2rem;
    margin-bottom: 8px;
    color: var(--primary);
}

/* Footer */
.footer {
    padding: 60px 24px;
    text-align: center;
    border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 992px) {
    .hero-container, .manual-step-item { flex-direction: column; text-align: center; }
    .manual-step-item:nth-child(even) { flex-direction: column; }
    h1 { font-size: 3rem; }
    .nav-links { display: none; }
}