/* LANGFIN — Premium Dark Design System */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0a0a0a;--card:#111111;--gold:#c5a47e;--teal:#2a9d8f;--red:#e63946;--text:#f0ece2;--muted:#888888;--border:rgba(197,164,126,0.15);--glow:rgba(197,164,126,0.06)}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:'Inter',sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--gold);text-decoration:none}
a:hover{opacity:0.85}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
section{padding:100px 0;border-bottom:1px solid var(--border)}

/* NAV */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(10,10,10,0.85);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:0 24px;height:64px;display:flex;align-items:center}
.nav-inner{max-width:1200px;margin:0 auto;width:100%;display:flex;align-items:center;justify-content:space-between}
.logo{color:var(--gold);font-size:18px;font-weight:300;letter-spacing:0.3em;text-transform:uppercase}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{color:var(--muted);font-size:14px;font-weight:400;transition:color 0.2s}
.nav-links a:hover{color:var(--text)}
.btn-gold{display:inline-block;padding:8px 20px;border:1px solid var(--gold);color:var(--gold);font-size:13px;letter-spacing:0.05em;transition:all 0.2s}
.btn-gold:hover{background:var(--gold);color:var(--bg)}
.btn-gold-fill{display:inline-block;padding:12px 28px;background:var(--gold);color:var(--bg);font-size:14px;font-weight:500;letter-spacing:0.03em;transition:all 0.2s}
.btn-gold-fill:hover{background:#d4b48e}
.hamburger{display:none;cursor:pointer;flex-direction:column;gap:5px}
.hamburger span{width:24px;height:2px;background:var(--text);transition:0.3s}

/* HERO */
.hero{min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding-top:64px;position:relative;overflow:hidden}
.hero h1{font-size:clamp(36px,6vw,72px);font-weight:200;letter-spacing:-0.02em;margin-bottom:20px}
.hero .sub{font-size:clamp(16px,2vw,20px);color:var(--muted);max-width:600px;margin-bottom:40px}
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.hero-bg{position:absolute;inset:0;z-index:-1;opacity:0.3}

/* TICKER */
.ticker-wrap{overflow:hidden;background:rgba(17,17,17,0.8);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:12px 0;white-space:nowrap}
.ticker{display:inline-block;animation:scroll 40s linear infinite}
.ticker span{color:var(--gold);font-size:13px;letter-spacing:0.05em;margin-right:48px;font-weight:400}
.ticker .val{color:var(--text)}
.ticker .pos{color:var(--teal)}
.ticker .neg{color:var(--red)}
@keyframes scroll{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* CHARTS */
.charts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.chart-card{background:var(--card);border:1px solid var(--border);padding:24px;position:relative;transition:border-color 0.3s}
.chart-card:hover{border-color:rgba(197,164,126,0.35)}
.chart-card h3{color:var(--gold);font-size:15px;font-weight:500;letter-spacing:0.05em;margin-bottom:4px}
.chart-container{width:100%;height:300px}
.live-badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;color:var(--teal);position:absolute;top:24px;right:24px}
.live-dot{width:6px;height:6px;background:var(--teal);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.3}}
.chart-credit{color:var(--muted);font-size:11px;margin-top:8px}

/* NUMBERS BAR */
.numbers{background:var(--card);padding:48px 0;border-bottom:1px solid var(--border)}
.numbers-grid{display:flex;justify-content:space-around;flex-wrap:wrap;gap:24px;text-align:center}
.numbers-grid .num{font-size:32px;font-weight:200;color:var(--gold)}
.numbers-grid .label{font-size:13px;color:var(--muted);margin-top:4px}

/* NUMBERS 4-col */
.numbers-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}

/* DATA UNIVERSE */
.universe-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.universe-card{background:var(--card);border:1px solid var(--border);padding:20px;transition:border-color 0.3s,box-shadow 0.3s,opacity 0.5s,transform 0.5s;opacity:0;transform:translateY(16px)}
.universe-card.visible{opacity:1;transform:translateY(0)}
.universe-card:hover{border-color:rgba(197,164,126,0.35);box-shadow:0 0 20px rgba(197,164,126,0.1)}
.universe-card h4{color:var(--gold);font-size:15px;font-weight:600;margin-bottom:6px}
.universe-card p{color:var(--muted);font-size:13px;line-height:1.5;margin-bottom:6px}
.u-stat{color:var(--teal);font-size:12px;font-weight:500}

@media(max-width:1200px){.universe-grid{grid-template-columns:repeat(3,1fr)}.numbers-4{grid-template-columns:repeat(4,1fr)}}
@media(max-width:768px){.universe-grid{grid-template-columns:repeat(2,1fr)}.numbers-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.universe-grid{grid-template-columns:1fr}.numbers-4{grid-template-columns:repeat(2,1fr)}}

/* FEATURES */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.feature-card{background:var(--card);border:1px solid var(--border);padding:32px;transition:border-color 0.3s}
.feature-card:hover{border-color:rgba(197,164,126,0.35);box-shadow:0 0 30px var(--glow)}
.feature-card svg{width:32px;height:32px;stroke:var(--gold);fill:none;stroke-width:1.5;margin-bottom:16px}
.feature-card h3{font-size:16px;font-weight:500;margin-bottom:8px}
.feature-card p{color:var(--muted);font-size:14px;line-height:1.6}

/* PHONE MOCKUP */
.demo-phone-area{display:flex;align-items:center;justify-content:center;padding:48px 0;background:rgba(17,17,17,0.5);border-bottom:1px solid var(--border)}
.phone-frame{width:440px;height:880px;background:#000;border:3px solid #2a2a2a;border-radius:36px;overflow:hidden;position:relative;box-shadow:0 20px 60px rgba(0,0,0,0.5),0 0 30px rgba(197,164,126,0.05)}
.phone-notch{position:absolute;top:14px;left:50%;transform:translateX(-50%);width:90px;height:8px;background:#1a1a1a;border-radius:4px;z-index:2}
.phone-frame video{width:100%;height:100%;object-fit:cover;border-radius:34px;display:block}
@media(max-width:768px){.phone-frame{width:340px;height:680px;border-radius:30px}.phone-frame video{border-radius:28px}.phone-notch{width:70px;height:7px;top:11px}}
@media(max-width:480px){.phone-frame{width:260px;height:520px;border-radius:26px}.phone-frame video{border-radius:24px}.phone-notch{width:60px;height:6px;top:9px}}

/* DEMOS */
.demos-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:48px}
.demo-card{background:var(--card);border:1px solid var(--border);overflow:hidden}
.demo-placeholder{aspect-ratio:8/5;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:14px;border-bottom:1px solid var(--border);background:rgba(17,17,17,0.5)}
.demo-card .info{padding:20px}
.demo-card h3{font-size:15px;font-weight:500;margin-bottom:6px}
.demo-card .badge{display:inline-block;padding:3px 10px;background:rgba(197,164,126,0.1);color:var(--gold);font-size:11px;border:1px solid var(--border);margin-bottom:6px}
.demo-card p{color:var(--muted);font-size:13px}

/* MCP ONBOARDING */
.code-block{background:#0d0d0d;border:1px solid var(--border);padding:24px 28px;font-family:'JetBrains Mono',monospace;font-size:14px;overflow-x:auto;position:relative;line-height:1.8}
.code-block .cmd{color:var(--muted)}
.code-block .str{color:var(--gold)}
.code-block .key{color:var(--teal)}
.code-block .brace{color:var(--text)}
.copy-btn{position:absolute;top:12px;right:12px;padding:4px 12px;border:1px solid var(--border);background:transparent;color:var(--muted);font-size:12px;cursor:pointer;transition:all 0.2s}
.copy-btn:hover{color:var(--gold);border-color:var(--gold)}
.mcp-tagline{color:var(--gold);font-style:italic;margin-top:24px;font-size:16px}

/* PRICING */
.beta-badge{display:inline-block;padding:4px 16px;border:1px solid var(--gold);color:var(--gold);font-size:12px}

/* Tabs */
.price-tabs{display:flex;justify-content:center;gap:0;margin-bottom:40px;border-bottom:1px solid var(--border)}
.price-tab{background:none;border:none;color:var(--muted);font-size:16px;font-family:inherit;padding:12px 32px;cursor:pointer;border-bottom:2px solid transparent;transition:all 0.2s}
.price-tab.active{color:var(--gold);border-bottom-color:var(--gold)}
.price-tab:hover{color:var(--text)}
.tab-subtitle{text-align:center;color:var(--muted);font-size:15px;margin-bottom:32px}
.price-section-label{color:var(--text);font-size:14px;font-weight:500;letter-spacing:0.1em;text-transform:uppercase;margin:32px 0 16px;text-align:center}

/* Free tier card */
.free-tier-card{background:var(--card);border:1px solid var(--border);border-top:3px solid var(--teal);padding:32px;text-align:center;margin-bottom:32px;position:relative}
.free-badge{display:inline-block;padding:3px 14px;background:rgba(42,157,143,0.15);color:var(--teal);font-size:13px;font-weight:500;border:1px solid rgba(42,157,143,0.3);margin-bottom:12px}
.free-tier-card h3{font-size:28px;font-weight:300;margin-bottom:4px}
.free-price{font-size:56px;font-weight:200;color:var(--gold);margin:8px 0}
.free-features{color:var(--muted);font-size:14px;line-height:1.8;max-width:600px;margin:0 auto}

/* Vertical price cards */
.vert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.vert-card{background:var(--card);border:1px solid var(--border);padding:20px;transition:border-color 0.3s}
.vert-card:hover{border-color:rgba(197,164,126,0.35);box-shadow:0 0 20px var(--glow)}
.vert-card h4{color:var(--gold);font-size:15px;font-weight:600;margin-bottom:6px}
.vert-card p{color:var(--muted);font-size:13px;line-height:1.5;margin-bottom:8px}
.vert-price{font-size:28px;font-weight:200;color:var(--text)}
.vert-price small{font-size:13px;color:var(--muted)}
.comp-price{display:block;color:var(--muted);font-size:11px;margin-top:4px;text-decoration:line-through;opacity:0.6}
.price-note{text-align:center;color:var(--muted);font-size:13px;margin:24px 0;line-height:1.6}
.price-note strong{color:var(--teal)}

/* Bundle cards */
.bundle-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.bundle-card{background:var(--card);border:1px solid var(--border);padding:24px;text-align:center;transition:border-color 0.3s}
.bundle-card:hover{border-color:rgba(197,164,126,0.35)}
.bundle-card.featured{border-color:var(--gold);position:relative}
.bundle-card.featured::before{content:'Best Value';position:absolute;top:-11px;left:50%;transform:translateX(-50%);background:var(--gold);color:var(--bg);font-size:11px;padding:2px 12px;font-weight:500}
.bundle-card h4{font-size:16px;font-weight:500;margin-bottom:8px}
.bundle-price{font-size:36px;font-weight:200;color:var(--gold);margin:8px 0}
.bundle-price small{font-size:14px;color:var(--muted)}
.bundle-card p{color:var(--muted);font-size:13px;margin-bottom:16px}

/* Enterprise */
.enterprise-card{background:var(--card);border:1px solid var(--border);padding:40px;text-align:center;margin-top:32px}
.enterprise-card h3{font-size:24px;font-weight:300;margin-bottom:12px}
.enterprise-card p{color:var(--muted);font-size:14px;margin-bottom:12px}
.enterprise-tagline{color:var(--gold);font-style:italic;font-size:18px;margin-bottom:16px!important}

@media(max-width:1200px){.vert-grid{grid-template-columns:repeat(3,1fr)}.bundle-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.vert-grid{grid-template-columns:repeat(2,1fr)}.bundle-grid{grid-template-columns:1fr}.price-tab{padding:10px 20px;font-size:14px}}
@media(max-width:480px){.vert-grid{grid-template-columns:1fr}}

/* SECTION TITLES */
.section-title{font-size:clamp(28px,4vw,42px);font-weight:200;text-align:center;margin-bottom:12px}
.section-sub{text-align:center;color:var(--muted);font-size:16px;margin-bottom:48px}

/* FOOTER */
.footer{padding:60px 0 40px;border-top:1px solid var(--border);text-align:center}
.footer .logo{font-size:20px;margin-bottom:20px;display:block}
.footer-links{display:flex;justify-content:center;gap:32px;margin-bottom:24px}
.footer-links a{color:var(--muted);font-size:13px}
.footer .copy{color:var(--muted);font-size:12px;margin-bottom:8px}
.footer .tagline{color:rgba(197,164,126,0.5);font-size:13px;font-style:italic}

/* RESPONSIVE */
@media(max-width:1200px){.charts-grid,.features-grid{grid-template-columns:repeat(2,1fr)}.pricing-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.charts-grid,.features-grid,.demos-grid{grid-template-columns:1fr}.pricing-grid{grid-template-columns:1fr}.nav-links{display:none}.hamburger{display:flex}.hero h1{font-size:32px}.numbers-grid{gap:16px}.numbers-grid .num{font-size:24px}}
@media(max-width:480px){.hero-ctas{flex-direction:column;align-items:center}.code-block{font-size:12px;padding:16px}}