:root {
    /* Deep Bastion Navy / Armored Theme (Default) */
    --bg-color: #060D1A;
    --bg-alt: #0a1426;
    --card-bg: #0F243E;
    --text-color: #f8fafc;
    --text-light: #94a3b8;
    --primary-color: #00F0FF; /* Electric Cyan */
    --primary-hover: #33f3ff;
    --accent-gold: #EAB308;
    --border-color: rgba(0, 240, 255, 0.2);
    --border-glow: rgba(0, 240, 255, 0.5);
    --nav-bg: rgba(6, 13, 26, 0.95);
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    /* Silver Armor / Light Theme variant */
    --bg-color: #f0f4f8;
    --bg-alt: #e2e8f0;
    --card-bg: #ffffff;
    --text-color: #0f172a;
    --text-light: #475569;
    --primary-color: #008793;
    --primary-hover: #006b75;
    --accent-gold: #b45309;
    --border-color: #cbd5e1;
    --border-glow: rgba(0, 135, 147, 0.3);
    --nav-bg: rgba(240, 244, 248, 0.95);
    --card-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

/* Base resets & typography */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
body { background-color: var(--bg-color); color: var(--text-color); line-height: 1.6; transition: background-color 0.3s ease, color 0.3s ease; }
a { text-decoration: none; color: var(--primary-color); transition: var(--transition); }
a:hover { color: var(--primary-hover); text-shadow: 0 0 8px var(--border-glow); }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 10px 24px; border-radius: 4px; /* Square/Armored look */
    font-weight: 600; cursor: pointer; text-align: center;
    border: 1px solid transparent; transition: var(--transition);
    text-transform: uppercase; letter-spacing: 1px;
}
.btn-primary { background-color: var(--card-bg); color: var(--primary-color) !important; border-color: var(--primary-color); box-shadow: inset 0 0 10px rgba(0, 240, 255, 0.1); }
.btn-primary:hover { background-color: rgba(0, 240, 255, 0.1); box-shadow: 0 0 15px var(--border-glow), inset 0 0 20px rgba(0, 240, 255, 0.2); }
.btn-outline { background-color: transparent; border-color: var(--text-light); color: var(--text-color) !important; }
.btn-outline:hover { border-color: var(--primary-color); color: var(--primary-color) !important; box-shadow: 0 0 10px var(--border-glow); }
.btn-small { padding: 6px 16px; font-size: 0.9rem; }
.btn-large { padding: 14px 36px; font-size: 1.1rem; }

/* Navbar */
.navbar { position: fixed; top: 0; left: 0; right: 0; background-color: var(--nav-bg); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-color); z-index: 1000; }
.nav-container { display: flex; justify-content: space-between; align-items: center; height: 70px; }
.brand-group { display: flex; align-items: center; gap: 15px; }
.logo { font-size: 1.4rem; font-weight: 800; color: var(--text-color) !important; display: flex; align-items: center; gap: 8px; letter-spacing: 1px; }
.logo svg { color: var(--primary-color); }
.status-pill { display: flex; align-items: center; gap: 6px; background: rgba(34, 197, 94, 0.1); border: 1px solid rgba(34, 197, 94, 0.3); color: #4ade80; padding: 4px 10px; border-radius: 50px; font-size: 0.8rem; font-weight: bold; }
.status-pill .dot { width: 8px; height: 8px; background-color: #22c55e; border-radius: 50%; box-shadow: 0 0 8px #22c55e; }
.gold-seal { display: flex; align-items: center; gap: 4px; color: var(--accent-gold); font-size: 0.85rem; font-weight: bold; }
.nav-links { display: flex; gap: 1.5rem; }
.nav-links a { color: var(--text-color); font-weight: 500; font-size: 0.95rem; }
.nav-links a:hover { color: var(--primary-color); }
.nav-actions { display: flex; align-items: center; gap: 15px; }

/* Theme Toggle */
.theme-toggle { background: transparent; border: 1px solid var(--border-color); border-radius: 4px; cursor: pointer; padding: 8px; display: flex; align-items: center; justify-content: center; color: var(--text-color); transition: var(--transition); }
.theme-toggle:hover { border-color: var(--primary-color); box-shadow: 0 0 10px var(--border-glow); color: var(--primary-color); }
.theme-toggle svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.sun-icon { display: none; }
[data-theme="light"] .sun-icon { display: block; }
[data-theme="light"] .moon-icon { display: none; }

/* Layout Sections */
.section { padding: 100px 0; }
.bg-alt { background-color: var(--bg-alt); border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.section-title { text-align: center; font-size: 2.2rem; margin-bottom: 3rem; font-weight: 700; letter-spacing: 1px; color: var(--text-color); }

/* Hero */
.hero { padding: 160px 0 100px; text-align: center; display: flex; align-items: center; min-height: 90vh; }
.headline { font-size: 3rem; line-height: 1.3; margin-bottom: 1.5rem; font-weight: 800; letter-spacing: 2px; text-shadow: 0 0 15px rgba(0,240,255,0.2); }
.sub-headline { font-size: 1.15rem; color: var(--text-light); max-width: 700px; margin: 0 auto 2.5rem; }

/* Simulator Box */
.simulator-box { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 25px; margin: 50px auto 0; max-width: 800px; text-align: left; box-shadow: inset 0 0 30px rgba(0,0,0,0.2), var(--card-shadow); position: relative; }
.simulator-box::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 2px; background: var(--primary-color); box-shadow: 0 0 10px var(--border-glow); }
.simulator-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 25px; border-bottom: 1px dashed var(--border-color); padding-bottom: 15px; }
.simulator-header h3 { margin: 0; font-size: 1.1rem; text-transform: uppercase; letter-spacing: 1px; color: var(--text-light); }
.graph-row { display: flex; align-items: center; margin-bottom: 15px; }
.graph-row:last-child { margin-bottom: 0; }
.graph-label { width: 140px; font-size: 0.9rem; font-weight: 600; color: var(--text-color); }
.graph-track { flex: 1; height: 30px; background: rgba(0,0,0,0.2); border: 1px solid var(--border-color); border-radius: 2px; margin: 0 15px; position: relative; overflow: hidden; display: flex; align-items: center; }
.wave { width: 100%; height: 100%; fill: none; stroke: var(--text-light); stroke-width: 2; transition: stroke 0.3s; }
.public-wave { stroke: #ef4444; opacity: 0.5; }
.liangxin-wave { stroke: var(--primary-color); filter: drop-shadow(0 0 3px var(--primary-color)); }
.graph-stats { width: 140px; text-align: right; font-family: monospace; font-size: 1rem; color: var(--text-color); }
.simulating .public-wave { opacity: 1; stroke-width: 3; }
.simulating .public-stats { color: #ef4444; font-weight: bold; text-shadow: 0 0 5px rgba(239, 68, 68, 0.5); }

/* Bento Cards */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.bento-card { background-color: var(--card-bg); border: 1px solid var(--border-color); border-radius: 4px; padding: 35px; box-shadow: var(--card-shadow); transition: var(--transition); position: relative; }
.bento-card::before { content: ''; position: absolute; top: -1px; left: -1px; right: -1px; bottom: -1px; border: 1px solid var(--primary-color); opacity: 0; transition: var(--transition); pointer-events: none; z-index: 1; }
.bento-card:hover { transform: translateY(-3px); }
.bento-card:hover::before { opacity: 1; box-shadow: 0 0 15px var(--border-glow), inset 0 0 15px rgba(0,240,255,0.05); }
.card-icon { margin-bottom: 25px; }

/* Pricing Panel */
.protocol-panel { max-width: 800px; margin: 0 auto 40px; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 4px; padding: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 15px; }
.protocol-selector { display: flex; align-items: center; gap: 10px; }
.proto-label { font-size: 0.9rem; color: var(--text-light); }
.proto-btn { background: transparent; border: 1px solid var(--border-color); color: var(--text-color); padding: 6px 12px; cursor: pointer; font-size: 0.85rem; font-weight: bold; border-radius: 2px; transition: var(--transition); }
.proto-btn:hover { border-color: var(--primary-color); }
.proto-btn.active { background: rgba(0, 240, 255, 0.1); border-color: var(--primary-color); color: var(--primary-color); box-shadow: 0 0 10px var(--border-glow); }
.latency-display { font-family: monospace; font-size: 1.1rem; color: var(--text-color); transition: opacity 0.2s; }
.latency-display strong { color: var(--primary-color); text-shadow: 0 0 5px var(--border-glow); }

.pricing-table { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; align-items: stretch; }
.pricing-card { text-align: center; position: relative; padding: 40px 30px; display: flex; flex-direction: column; }
.pricing-card.popular { border-color: var(--primary-color); box-shadow: 0 0 20px rgba(0,240,255,0.15); transform: scale(1.02); }
.badge { position: absolute; top: -15px; left: 50%; transform: translateX(-50%); background-color: var(--primary-color); color: #000; padding: 4px 15px; font-size: 0.85rem; font-weight: 800; border-radius: 2px; letter-spacing: 1px; box-shadow: 0 0 10px var(--border-glow); }
.pledge-badge { font-size: 0.8rem; color: #22c55e; border: 1px solid rgba(34,197,94,0.3); background: rgba(34,197,94,0.1); display: inline-block; padding: 4px 10px; margin-bottom: 20px; border-radius: 2px; }
.price { font-size: 3rem; font-weight: 800; margin: 10px 0 20px; color: var(--text-color); }
.price span { font-size: 1rem; color: var(--text-light); font-weight: normal; }
.pricing-features { list-style: none; margin: 0 0 30px; text-align: left; flex-grow: 1; border-top: 1px solid var(--border-color); padding-top: 20px; }
.pricing-features li { padding: 12px 0; color: var(--text-light); display: flex; align-items: center; font-size: 0.95rem; }
.pricing-features li:before { content: ""; display: block; width: 6px; height: 6px; background: var(--primary-color); margin-right: 12px; box-shadow: 0 0 5px var(--primary-color); }
.pricing-card .btn { width: 100%; }

/* Subpages */
.page-container { padding-top: 120px; padding-bottom: 60px; min-height: 80vh; }
.page-container h1 { font-size: 2.2rem; margin-bottom: 2rem; border-bottom: 1px solid var(--border-color); padding-bottom: 20px; color: var(--text-color); }
.content-block { background-color: var(--card-bg); border: 1px solid var(--border-color); padding: 40px; margin-bottom: 40px; border-radius: 4px; box-shadow: inset 0 0 20px rgba(0,0,0,0.1); }
.content-block h2 { margin-top: 2.5rem; margin-bottom: 1rem; color: var(--primary-color); font-size: 1.4rem; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.content-block h2:before { content: '>'; color: var(--primary-color); font-family: monospace; font-weight: bold; }
.content-block h2:first-child { margin-top: 0; }
.content-block p, .content-block ul { margin-bottom: 1.2rem; color: var(--text-light); line-height: 1.8; }
.content-block ul { padding-left: 20px; list-style-type: square; }
.content-block li { margin-bottom: 8px; }

/* Reviews & FAQ */
.review-stars { color: var(--accent-gold); margin-bottom: 15px; font-size: 1.2rem; text-shadow: 0 0 5px rgba(234,179,8,0.5); }
.review-text { font-style: italic; color: var(--text-light); margin-bottom: 20px; }
.review-author { font-weight: 600; color: var(--text-color); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { margin-bottom: 25px; border-bottom: 1px dashed var(--border-color); padding-bottom: 25px; }
.faq-question { font-size: 1.1rem; margin-bottom: 10px; color: var(--text-color); font-weight: 600; }
.faq-answer { color: var(--text-light); }

/* Footer */
.footer { background-color: var(--bg-alt); padding: 60px 0 30px; border-top: 1px solid var(--primary-color); box-shadow: inset 0 10px 20px rgba(0,0,0,0.2); }
.footer-container { display: flex; flex-direction: column; align-items: center; gap: 30px; }
.footer-links { display: flex; gap: 30px; }
.footer-links a { color: var(--text-light); font-size: 0.95rem; font-weight: 500; }
.footer-links a:hover { color: var(--primary-color); }
.footer-copyright { color: var(--text-light); font-size: 0.85rem; opacity: 0.7; }

/* Responsive */
@media (max-width: 992px) {
    .grid-3, .pricing-table { grid-template-columns: repeat(2, 1fr); }
    .pricing-card.popular { transform: none; }
    .status-pill, .gold-seal { display: none; }
    .nav-links { gap: 1rem; }
}
@media (max-width: 768px) {
    .headline { font-size: 2.2rem; }
    .nav-links { display: none; }
    .nav-btn { display: none; }
    .grid-3, .grid-2, .pricing-table { grid-template-columns: 1fr; }
    .graph-label { width: 90px; font-size: 0.8rem; }
    .graph-stats { width: 90px; font-size: 0.8rem; }
    .protocol-panel { flex-direction: column; align-items: flex-start; }
    .btn { padding: 14px 28px; }
    .content-block { padding: 25px; }
}