:root {
    --primary-red: #ea3447;
    --primary-red-hover: #d12f40;
    --text-dark: #1e1e1e;
    --text-light: #666;
    --bg-white: #ffffff;
    --bg-offwhite: #f9f9f9;
    --bg-platinum: #eef1f5;
    --border-light: #e0e0e0;
}

body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-white);
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; padding: 0; margin: 0; }

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    height: 70px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}
.nav-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 20px;
}
.logo img { height: 32px; }
.nav-center a {
    margin: 0 15px;
    font-size: 15px;
    color: var(--text-light);
    font-weight: 500;
}
.nav-center a:hover { color: var(--primary-red); }
.nav-end { display: flex; align-items: center; gap: 20px; }
.nav-end a { font-size: 14px; font-weight: 500; }
.btn-cta {
    background: var(--text-dark);
    color: #fff !important;
    padding: 8px 20px;
    border-radius: 6px;
}
.btn-cta:hover { background: var(--primary-red); }

/* Hero Center */
.hero-center {
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero-bg-circle {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 150vw;
    height: 150vw;
    background: radial-gradient(circle, #fff5f5 0%, #fff 70%);
    border-radius: 50%;
    z-index: -1;
}
.pill-tag {
    background: #fff;
    border: 1px solid #eee;
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-red);
    display: inline-block;
    margin-bottom: 20px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.03);
}
.hero-main-text h1 {
    font-size: 72px;
    line-height: 1.1;
    margin: 0 0 20px;
    letter-spacing: -2px;
}
.highlight-red { color: var(--primary-red); }
.hero-main-text p {
    font-size: 20px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 40px;
}
.hero-actions {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 60px;
}
.btn-primary-lg {
    background: var(--primary-red);
    color: #fff;
    padding: 15px 40px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}
.btn-primary-lg:hover { transform: translateY(-2px); box-shadow: 0 10px 20px rgba(234, 52, 71, 0.3); }
.btn-text-lg { font-size: 16px; font-weight: 500; color: var(--text-dark); }
.btn-text-lg:hover { color: var(--primary-red); }

/* Hero Visual Stack */
.hero-visual-stack {
    position: relative;
    height: 300px;
    max-width: 800px;
    margin: 0 auto;
}
.stack-card {
    position: absolute;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.08);
    border: 1px solid rgba(0,0,0,0.05);
    transition: 0.5s;
}
.stack-card:hover { transform: translateY(-10px); z-index: 10; }

.card-1 {
    width: 300px;
    height: 180px;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    padding: 20px;
    text-align: left;
}
.card-header { margin-bottom: 15px; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 5px; }
.r { background: #ff5f56; } .y { background: #ffbd2e; } .g { background: #27c93f; }
.card-body h3 { font-size: 14px; margin: 0 0 5px; color: #333; }
.card-body p { font-size: 12px; color: #999; margin-bottom: 10px; }
.loading-bar { height: 4px; background: #eee; width: 80%; border-radius: 2px; overflow: hidden; }
.loading-bar::after { content: ''; display: block; width: 50%; height: 100%; background: var(--primary-red); animation: load 2s infinite; }
@keyframes load { 0% { transform: translateX(-100%); } 100% { transform: translateX(200%); } }

.card-2 {
    width: 200px;
    height: 200px;
    top: 50px;
    left: 100px;
    z-index: 2;
    transform: rotate(-5deg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.card-chart { display: flex; align-items: flex-end; gap: 8px; height: 80px; margin-bottom: 10px; }
.bar { width: 12px; background: #eee; border-radius: 4px 4px 0 0; }
.bar.active { background: #4caf50; }
.card-label { font-size: 12px; color: #999; font-weight: 600; }

.card-3 {
    width: 220px;
    height: 140px;
    top: 80px;
    right: 100px;
    z-index: 2;
    transform: rotate(5deg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.avatar-group { display: flex; margin-bottom: 10px; }
.av { width: 30px; height: 30px; border-radius: 50%; background: #eee; border: 2px solid #fff; margin-left: -10px; display: flex; align-items: center; justify-content: center; font-size: 10px; color: #666; font-weight: bold; }
.av:nth-child(1) { background: #e3f2fd; }
.av:nth-child(2) { background: #ffebee; }
.av:nth-child(3) { background: #fff3e0; }

/* Partners */
.partners-section {
    text-align: center;
    padding: 40px 0;
    border-bottom: 1px solid #eee;
}
.partners-section p { font-size: 12px; color: #999; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 1px; }
.partner-logos { color: #ccc; display: flex; justify-content: center; gap: 40px; }

/* Ecosystem */
.ecosystem-section { padding: 100px 0; background: #fff; }
.section-head-center { text-align: center; margin-bottom: 60px; }
.section-head-center h2 { font-size: 36px; margin: 0 0 10px; }
.section-head-center p { font-size: 18px; color: #666; }

.ecosystem-tabs {
    display: flex;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}
.tab-list { width: 200px; display: flex; flex-direction: column; gap: 10px; }
.tab-item {
    padding: 15px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    color: #666;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: 0.3s;
}
.tab-item:hover, .tab-item.active { background: #f5f5f5; color: var(--primary-red); }
.tab-item.active { background: #fff0f0; }

.tab-panel {
    flex: 1;
    background: #f9f9f9;
    border-radius: 20px;
    padding: 40px;
}
.panel-content { display: flex; gap: 40px; align-items: center; }
.panel-text { flex: 1; }
.panel-text h3 { font-size: 24px; margin-bottom: 15px; }
.panel-text p { color: #666; margin-bottom: 20px; font-size: 15px; }
.check-list li { margin-bottom: 10px; padding-left: 20px; position: relative; font-size: 14px; font-weight: 500; }
.check-list li::before { content: '✓'; color: var(--primary-red); position: absolute; left: 0; }

.panel-visual { flex: 1; display: flex; justify-content: center; }
.doc-sheet {
    width: 200px;
    height: 260px;
    background: #fff;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    padding: 20px;
}
.line { height: 8px; background: #eee; margin-bottom: 12px; border-radius: 4px; }
.l1 { width: 80%; } .l2 { width: 100%; } .l3 { width: 90%; }
.cursor-blink { color: var(--primary-red); animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* AI Flow */
.ai-flow-section { padding: 100px 0; background: #000; color: #fff; }
.ai-flow-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.tag-ai { background: linear-gradient(90deg, #ea3447, #ff9800); padding: 4px 12px; border-radius: 4px; font-size: 12px; font-weight: bold; display: inline-block; margin-bottom: 20px; }
.flow-text h2 { font-size: 48px; line-height: 1.1; margin-bottom: 20px; }
.flow-text p { opacity: 0.7; font-size: 18px; margin-bottom: 40px; }
.flow-steps { display: flex; align-items: center; gap: 10px; }
.step { text-align: center; }
.step-num { width: 30px; height: 30px; border: 1px solid rgba(255,255,255,0.2); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 10px; font-size: 12px; }
.step-desc { font-size: 12px; opacity: 0.6; }
.step-line { flex: 1; height: 1px; background: rgba(255,255,255,0.2); margin-bottom: 20px; }

.chat-window {
    background: #1a1a1a;
    border-radius: 16px;
    padding: 30px;
    border: 1px solid #333;
}
.chat-msg {
    padding: 10px 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 14px;
    max-width: 80%;
}
.chat-msg.ai { background: #333; }
.chat-msg.user { background: var(--primary-red); margin-left: auto; text-align: right; }
.ppt-preview { display: flex; gap: 10px; margin-top: 20px; }
.slide { width: 80px; height: 50px; background: #333; border: 1px solid #444; border-radius: 4px; }

/* Sync */
.sync-section { padding: 100px 0; background: #fff; }
.sync-box {
    background: #e3f2fd;
    border-radius: 24px;
    padding: 60px;
    text-align: center;
}
.sync-content h2 { font-size: 36px; margin-bottom: 20px; }
.sync-content p { color: #555; font-size: 18px; margin-bottom: 40px; }
.device-icons { font-size: 40px; color: #1976d2; display: flex; justify-content: center; gap: 40px; }

/* Modern Footer */
.modern-footer { padding: 60px 0 20px; background: #f9f9f9; }
.footer-row { display: flex; justify-content: space-between; margin-bottom: 40px; }
.footer-brand h4 { font-size: 18px; margin-bottom: 10px; }
.footer-brand p { font-size: 14px; color: #999; }
.footer-nav a { margin: 0 15px; color: #666; font-size: 14px; }
.footer-nav a:hover { color: var(--primary-red); }
.footer-social a { margin-left: 20px; color: #ccc; }
.footer-social a:hover { color: var(--primary-red); }
.footer-copy { text-align: center; font-size: 12px; color: #ccc; border-top: 1px solid #eee; padding-top: 20px; }