:root {
    --glass-bg: #eaf3fa;
    --glass-color: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(255, 255, 255, 0.8);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    
    --text-main: #1a365d;
    --text-muted: #475569;
    --accent: #0ea5e9;
    --accent-hover: #0284c7;
    
    --font-heading: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-body: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

body {
    background-color: var(--glass-bg);
    color: var(--text-main);
    font-family: var(--font-body);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(14, 165, 233, 0.1), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(56, 189, 248, 0.1), transparent 25%);
    background-attachment: fixed;
    display: flex;
    justify-content: center;
    padding: 20px;
    min-height: 100vh;
}

a { text-decoration: none; color: inherit; }

/* Main Wrapper - Distinct Layout */
.main-layout {
    width: 100%;
    max-width: 1400px;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* Floating Top Island Nav */
.floating-nav {
    background: var(--glass-color);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 40px;
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 20px;
    z-index: 100;
}

.brand-logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    font-weight: 600;
    color: var(--text-muted);
    transition: 0.2s;
}

.nav-links a:hover {
    color: var(--text-main);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #fff;
    padding: 10px 25px;
    border-radius: 30px;
    font-weight: bold;
    color: var(--accent);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.15);
    transition: 0.3s;
    cursor: pointer;
}
.btn-glass:hover {
    background: var(--accent);
    color: #fff;
}
.btn-glass.primary {
    background: var(--accent);
    color: #fff;
    border: none;
}
.btn-glass.primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.3);
}

/* Bento Grid Layout */
.bento-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: auto auto;
    gap: 30px;
}

.glass-box {
    background: var(--glass-color);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 30px;
    padding: 40px;
}

/* Hero (Inside Bento) */
.hero-box {
    grid-column: 1 / 2;
    grid-row: 1 / 3;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-box h1 {
    font-size: 56px;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-main);
}

.hero-box p {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 30px;
    max-width: 600px;
}

.trust-badges {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.badge {
    background: rgba(255, 255, 255, 0.5);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 5px;
}
.badge::before { content: '✔'; color: var(--accent); }

/* Features (Inside Bento) */
.feat-box {
    text-align: center;
}
.feat-box h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--accent);
}
.feat-box p {
    font-size: 14px;
    color: var(--text-muted);
}

/* Stats Row */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.stat-circle {
    aspect-ratio: 1;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, rgba(255,255,255,0.8), rgba(255,255,255,0.2));
}
.stat-circle .s-num { font-size: 32px; font-weight: bold; color: var(--accent); }
.stat-circle .s-txt { font-size: 14px; font-weight: 600; }

/* Nodes Scroller */
.nodes-scroller {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 10px;
    scrollbar-width: none;
}
.nodes-scroller::-webkit-scrollbar { display: none; }

.node-card {
    min-width: 200px;
    text-align: center;
    padding: 30px 20px;
}
.node-card h4 { font-size: 20px; margin-bottom: 5px; }
.node-card span { font-size: 12px; color: var(--accent); font-weight: bold; background: #fff; padding: 4px 10px; border-radius: 10px;}

/* Split Bottom */
.split-bottom {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

/* Reviews */
.review-item {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.5);
}
.review-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0;}
.r-stars { color: #0ea5e9; font-size: 14px; margin-bottom: 5px; }
.r-content { font-size: 15px; margin-bottom: 10px; font-style: italic; }

/* FAQ Accordion */
.faq-wrap .faq-q {
    font-weight: 600;
    padding: 15px 0;
    cursor: pointer;
    border-bottom: 1px solid rgba(255,255,255,0.5);
    display: flex;
    justify-content: space-between;
}
.faq-wrap .faq-a {
    padding: 15px 0;
    color: var(--text-muted);
    font-size: 14px;
    display: none;
}

/* Footer */
.glass-footer {
    text-align: center;
    padding: 20px;
}
.glass-footer p { font-size: 14px; color: var(--text-muted); font-weight: bold; }

@media (max-width: 900px) {
    .bento-grid { grid-template-columns: 1fr; grid-template-rows: auto; }
    .hero-box { grid-column: 1 / -1; grid-row: auto; }
    .stats-row { grid-template-columns: repeat(2, 1fr); }
    .split-bottom { grid-template-columns: 1fr; }
    .floating-nav { flex-direction: column; gap: 15px; border-radius: 20px; padding: 20px; }
}