:root {
    --bg:       #f4f6fb;
    --bg2:      #ffffff;
    --bg3:      #eef1f8;
    --surface:  #f0f3fa;
    --surface2: #e6eaf5;
    --border:   #d4daea;
    --border2:  #b8c3db;
    --accent:   #1a6ef5;
    --accent2:  #0051d4;
    --accent3:  #0da870;
    --gold:     #d97706;
    --red:      #e03150;
    --text:     #0f1a2e;
    --text2:    #3d5280;
    --text3:    #7a90b8;
    --glow:     rgba(26,110,245,0.12);
    --shadow-sm: 0 2px 8px rgba(15,26,46,0.06);
    --shadow:    0 4px 24px rgba(15,26,46,0.08);
    --shadow-lg: 0 8px 40px rgba(15,26,46,0.12);
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-size: 15px;
    line-height: 1.7;
    overflow-x: hidden;
}

/* Subtle grid */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(26,110,245,0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(26,110,245,0.035) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* ── NAV ── */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 48px;
    height: 64px;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 18px;
    letter-spacing: -0.5px;
    color: var(--text);
    text-decoration: none;
}

.nav-logo-icon {
    width: 32px; height: 32px;
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 800; color: #fff;
    box-shadow: 0 2px 12px rgba(26,110,245,0.35);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}

.nav-links > li { position: relative; }

.nav-links > li > a,
.nav-item-btn {
    color: var(--text2);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.2px;
    transition: all 0.2s;
    padding: 8px 14px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    font-family: 'DM Sans', sans-serif;
    white-space: nowrap;
}

.nav-links > li > a:hover,
.nav-item-btn:hover {
    color: var(--accent);
    background: rgba(26,110,245,0.07);
}

.nav-arrow { font-size:9px; opacity:0.5; transition:transform 0.2s; }
.nav-links > li:hover .nav-arrow { transform:rotate(180deg); }

/* Dropdown */
.nav-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 8px;
    min-width: 230px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s cubic-bezier(.22,.68,0,1.2);
    box-shadow: var(--shadow-lg);
    z-index: 300;
}

.nav-links > li:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 8px;
    color: var(--text2);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.18s;
    cursor: pointer;
    white-space: nowrap;
}

.nav-dropdown-item:hover {
    color: var(--accent);
    background: rgba(26,110,245,0.07);
}

.nav-dropdown-item .di-icon {
    width: 28px; height: 28px;
    background: var(--surface);
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; flex-shrink: 0;
}

.nav-dropdown-item .di-label { font-weight: 500; color: var(--text); }
.nav-dropdown-item .di-sub { font-size: 10px; color: var(--text3); display:block; }
.nav-dropdown-item:hover .di-label { color: var(--accent); }

.lock-badge {
    margin-left: auto;
    font-size: 10px;
    background: rgba(217,119,6,0.09);
    color: var(--gold);
    padding: 2px 7px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
}

.dropdown-divider { height:1px; background:var(--border); margin:6px 0; }

/* Nav right */
.nav-right { display:flex; align-items:center; gap:12px; }

.nav-badge {
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 20px;
    letter-spacing: 0.5px;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 5px 14px 5px 8px;
    font-size: 12px;
    color: var(--text2);
}

.nav-user-avatar {
    width: 24px; height: 24px;
    background: linear-gradient(135deg, var(--accent2), var(--accent3));
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 11px; font-weight: 700; color: #fff;
}

.nav-logout {
    color: var(--text3);
    text-decoration: none;
    font-size: 12px;
    padding: 6px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: all 0.2s;
}
.nav-logout:hover { color: var(--red); border-color: var(--red); background: rgba(224,49,80,0.05); }

/* ── HERO ── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 48px 80px;
    overflow: hidden;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
}
.hero-orb-1 { width:600px;height:600px;background:radial-gradient(circle,rgba(26,110,245,0.10),transparent 70%);top:-100px;left:50%;transform:translateX(-50%); }
.hero-orb-2 { width:400px;height:400px;background:radial-gradient(circle,rgba(13,168,112,0.07),transparent 70%);bottom:100px;right:-100px; }
.hero-orb-3 { width:300px;height:300px;background:radial-gradient(circle,rgba(217,119,6,0.06),transparent 70%);bottom:200px;left:-50px; }

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(26,110,245,0.08);
    border: 1px solid rgba(26,110,245,0.18);
    color: var(--accent);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 8px 20px;
    border-radius: 20px;
    margin-bottom: 32px;
    animation: fadeUp 0.6s ease forwards;
}
.hero-tag::before { content:''; width:6px; height:6px; background:var(--accent); border-radius:50%; animation:blink 2s infinite; }

@keyframes blink { 0%,100%{opacity:1;transform:scale(1)}50%{opacity:0.4;transform:scale(0.75)} }

.hero h1 {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: clamp(42px,8vw,84px);
    line-height: 1.0;
    letter-spacing: -3px;
    margin-bottom: 24px;
    color: var(--text);
    animation: fadeUp 0.6s ease 0.1s both;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--accent), var(--accent2), var(--accent3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: 18px;
    color: var(--text2);
    max-width: 560px;
    margin: 0 auto 48px;
    font-weight: 300;
    line-height: 1.7;
    animation: fadeUp 0.6s ease 0.2s both;
}

.hero-cta { display:flex; gap:16px; justify-content:center; flex-wrap:wrap; animation:fadeUp 0.6s ease 0.3s both; }

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent2), var(--accent));
    color: #fff;
    text-decoration: none;
    padding: 14px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.28s;
    box-shadow: 0 4px 20px rgba(26,110,245,0.3);
    border: none; cursor: pointer;
    font-family: 'DM Sans', sans-serif;
}
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 32px rgba(26,110,245,0.42); }

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg2);
    color: var(--text2);
    text-decoration: none;
    padding: 14px 32px;
    border-radius: 12px;
    font-weight: 500;
    font-size: 14px;
    border: 1px solid var(--border2);
    transition: all 0.25s;
    box-shadow: var(--shadow-sm);
}
.btn-secondary:hover { color:var(--accent); border-color:var(--accent); background:#fff; box-shadow:var(--shadow); }

.hero-stats {
    display: flex;
    gap: 48px;
    justify-content: center;
    margin-top: 80px;
    padding-top: 48px;
    border-top: 1px solid var(--border);
    animation: fadeUp 0.6s ease 0.4s both;
    flex-wrap: wrap;
}

.stat { text-align:center; }
.stat-num {
    font-family: 'Syne', sans-serif;
    font-size: 36px; font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1; margin-bottom: 6px;
}
.overlay {
  position: absolute;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.25);
}
.card {
  background: white;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  transition: 0.3s;
}

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

.card-header {
  padding: 25px;
  color: white;
}

.internal {
  background: linear-gradient(135deg, #007bff, #0056b3);
}

.external {
  background: linear-gradient(135deg, #00a86b, #007e51);
}

.card-header h3 {
  font-size: 28px;
}

.card-body {
  padding: 25px;
}

.feature {
  margin-bottom: 25px;
}

.feature h4 {
  color: #003366;
  margin-bottom: 10px;
  font-size: 20px;
}

.feature p {
  color: #555;
  line-height: 1.7;
}

.cta {
  text-align: center;
  margin-top: 50px;
}

.cta button {
  background: linear-gradient(135deg, #003366, #0059b3);
  color: white;
  border: none;
  padding: 15px 35px;
  font-size: 18px;
  border-radius: 10px;
  cursor: pointer;
  transition: 0.3s;
}

.cta button:hover {
  transform: scale(1.05);
}
.stat-label { font-size:12px; color:var(--text3); text-transform:uppercase; letter-spacing:1.5px; font-weight:500; }

@keyframes fadeUp { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }

/* ── SECTIONS ── */
section { position:relative; z-index:1; padding:100px 48px; max-width:1200px; margin:0 auto; }

.section-tag { font-family:'JetBrains Mono',monospace; font-size:11px; color:var(--accent); letter-spacing:2px; text-transform:uppercase; margin-bottom:16px; opacity:0.75; }
.section-title { font-family:'Syne',sans-serif; font-size:clamp(26px,4vw,42px); font-weight:800; letter-spacing:-1.5px; line-height:1.1; margin-bottom:16px; color:var(--text); }
.section-desc { color:var(--text2); font-size:16px; max-width:560px; margin-bottom:64px; font-weight:300; }

/* ── AUTH GATE ── */
.auth-gate {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 64px 48px;
    text-align: center;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}
.auth-gate::before { content:''; position:absolute; top:0; left:0; right:0; height:3px; background:linear-gradient(90deg,transparent,var(--gold),transparent); }

.auth-gate-icon { font-size:48px; margin-bottom:20px; display:block; }
.auth-gate-title { font-family:'Syne',sans-serif; font-weight:800; font-size:22px; letter-spacing:-0.5px; margin-bottom:12px; color:var(--text); }
.auth-gate-desc { color:var(--text2); font-size:14px; margin-bottom:32px; max-width:420px; margin-left:auto; margin-right:auto; line-height:1.6; }

/* ── ARCH GRID ── */
.arch-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:2px; background:var(--border); border-radius:20px; overflow:hidden; margin-bottom:48px; }
.arch-cell { background:var(--bg2); padding:32px 28px; transition:background 0.25s; cursor:default; }
.arch-cell:hover { background:var(--surface); }
.arch-cell-icon { font-size:28px; margin-bottom:16px; }
.arch-cell-title { font-family:'Syne',sans-serif; font-weight:700; font-size:15px; margin-bottom:8px; color:var(--text); }
.arch-cell-desc { font-size:13px; color:var(--text3); line-height:1.6; }

/* ── NODES ── */
.nodes-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(200px,1fr)); gap:12px; }
.node-card { background:var(--bg2); border:1px solid var(--border); border-radius:14px; padding:20px; transition:all 0.25s; position:relative; overflow:hidden; box-shadow:var(--shadow-sm); }
.node-card::before { content:''; position:absolute; top:0; left:0; right:0; height:3px; }
.node-card.app::before { background:linear-gradient(90deg,var(--accent2),var(--accent)); }
.node-card.batch::before { background:linear-gradient(90deg,var(--gold),#f59e0b); }
.node-card.stream::before { background:linear-gradient(90deg,var(--accent3),#059669); }
.node-card:hover { border-color:var(--border2); transform:translateY(-2px); box-shadow:var(--shadow); }
.node-type { font-size:10px; font-weight:600; letter-spacing:1.5px; text-transform:uppercase; margin-bottom:8px; }
.node-type.app { color:var(--accent); }
.node-type.batch { color:var(--gold); }
.node-type.stream { color:var(--accent3); }
.node-name { font-family:'JetBrains Mono',monospace; font-size:12px; color:var(--text2); margin-bottom:12px; word-break:break-all; }
.node-status { display:flex; align-items:center; gap:6px; font-size:12px; color:var(--accent3); font-weight:500; }
.node-dot { width:6px; height:6px; background:var(--accent3); border-radius:50%; animation:blink 2s infinite; }

/* ── FLOW ── */
.flow-container { background:var(--bg2); border:1px solid var(--border); border-radius:20px; padding:48px; overflow-x:auto; box-shadow:var(--shadow-sm); }
.flow-stages { display:flex; align-items:center; gap:0; min-width:800px; }
.flow-stage { flex:1; position:relative; }
.flow-stage-inner { background:var(--surface); border:1px solid var(--border); border-radius:12px; padding:20px 16px; text-align:center; position:relative; transition:all 0.25s; cursor:default; }
.flow-stage-inner:hover { border-color:var(--accent); box-shadow:0 0 0 3px rgba(26,110,245,0.10); transform:translateY(-2px); }
.flow-stage-inner.active { border-color:var(--accent); background:rgba(26,110,245,0.05); }
.flow-stage-inner.done { border-color:var(--accent3); background:rgba(13,168,112,0.04); }
.flow-num { width:28px; height:28px; border-radius:50%; background:var(--surface2); display:flex; align-items:center; justify-content:center; font-size:11px; font-weight:700; margin:0 auto 10px; font-family:'Syne',sans-serif; color:var(--text2); }
.flow-stage-inner.done .flow-num { background:rgba(13,168,112,0.14); color:var(--accent3); }
.flow-stage-inner.active .flow-num { background:rgba(26,110,245,0.14); color:var(--accent); }
.flow-stage-title { font-size:11px; font-weight:700; letter-spacing:0.5px; margin-bottom:6px; color:var(--text); }
.flow-stage-sub { font-size:10px; color:var(--text3); line-height:1.4; }
.flow-arrow { flex:0 0 32px; display:flex; align-items:center; justify-content:center; color:var(--border2); font-size:20px; position:relative; top:-8px; }

/* ── CASE CARDS ── */
.case-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:20px; }
.case-card { background:var(--bg2); border:1px solid var(--border); border-radius:16px; padding:28px; transition:all 0.25s; cursor:default; box-shadow:var(--shadow-sm); }
.case-card:hover { border-color:var(--border2); transform:translateY(-2px); box-shadow:var(--shadow); }
.case-header { display:flex; align-items:flex-start; justify-content:space-between; margin-bottom:16px; }
.case-icon { width:44px; height:44px; border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:20px; background:var(--surface); }
.case-code { font-family:'JetBrains Mono',monospace; font-size:11px; color:var(--text3); background:var(--surface); padding:4px 10px; border-radius:6px; }
.case-title { font-family:'Syne',sans-serif; font-weight:700; font-size:17px; margin-bottom:8px; letter-spacing:-0.3px; color:var(--text); }
.case-desc { font-size:13px; color:var(--text2); margin-bottom:20px; line-height:1.6; }
.case-tags { display:flex; flex-wrap:wrap; gap:6px; }
.tag { font-size:10px; font-weight:600; padding:4px 10px; border-radius:6px; letter-spacing:0.5px; }
.tag-blue { background:rgba(26,110,245,0.09); color:var(--accent2); }
.tag-green { background:rgba(13,168,112,0.09); color:var(--accent3); }
.tag-gold { background:rgba(217,119,6,0.09); color:var(--gold); }
.tag-red { background:rgba(224,49,80,0.09); color:var(--red); }

/* ── SLA TABLE ── */
.sla-table { width:100%; border-collapse:collapse; background:var(--bg2); border-radius:16px; overflow:hidden; border:1px solid var(--border); box-shadow:var(--shadow-sm); }
.sla-table th { background:var(--surface); padding:14px 20px; text-align:left; font-size:11px; font-weight:700; letter-spacing:1.5px; text-transform:uppercase; color:var(--text3); border-bottom:1px solid var(--border); }
.sla-table td { padding:16px 20px; font-size:13px; border-bottom:1px solid var(--border); color:var(--text2); }
.sla-table tr:last-child td { border-bottom:none; }
.sla-table tr:hover td { background:var(--surface); }
.sla-label { font-family:'JetBrains Mono',monospace; font-size:12px; color:var(--text); font-weight:500; }
.sla-time { font-family:'Syne',sans-serif; font-weight:700; font-size:14px; color:var(--accent); }

/* ── TECH ── */
.tech-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.tech-card { background:var(--bg2); border:1px solid var(--border); border-radius:14px; padding:24px 20px; text-align:center; transition:all 0.25s; box-shadow:var(--shadow-sm); }
.tech-card:hover { border-color:var(--border2); background:var(--surface); transform:translateY(-2px); box-shadow:var(--shadow); }
.tech-icon { font-size:32px; margin-bottom:12px; }
.tech-name { font-family:'Syne',sans-serif; font-size:14px; font-weight:700; margin-bottom:4px; color:var(--text); }
.tech-desc { font-size:11px; color:var(--text3); line-height:1.5; }

/* ── INTEGRATION ── */
.integration-list { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.integration-item { background:var(--bg2); border:1px solid var(--border); border-radius:14px; padding:24px; display:flex; align-items:flex-start; gap:16px; transition:all 0.25s; box-shadow:var(--shadow-sm); }
.integration-item:hover { border-color:var(--border2); background:var(--surface); box-shadow:var(--shadow); }
.int-icon { width:40px; height:40px; border-radius:10px; background:var(--surface); border:1px solid var(--border); display:flex; align-items:center; justify-content:center; font-size:18px; flex-shrink:0; }
.int-name { font-family:'Syne',sans-serif; font-weight:700; font-size:14px; margin-bottom:4px; color:var(--text); }
.int-desc { font-size:12px; color:var(--text3); line-height:1.5; }

/* ── CODE BLOCK ── */
.code-block { background:#f8f9fc; border:1px solid var(--border); border-radius:14px; padding:24px 28px; font-family:'JetBrains Mono',monospace; font-size:12px; line-height:1.8; overflow-x:auto; position:relative; }
.code-block::before { content:attr(data-lang); position:absolute; top:12px; right:16px; font-size:10px; color:var(--text3); letter-spacing:1px; text-transform:uppercase; }
.code-kw { color:#d6336c; }
.code-str { color:#2f9e44; }
.code-num { color:var(--gold); }
.code-cm { color:var(--text3); }
.code-fn { color:var(--accent2); }
.code-var { color:#1864ab; }

/* ── DIVIDER ── */
.full-divider { width:100%; height:1px; background:linear-gradient(90deg,transparent,var(--border),transparent); margin:0; }

/* ── HIGHLIGHT BOX ── */
.highlight-box { background:rgba(26,110,245,0.04); border:1px solid rgba(26,110,245,0.14); border-left:3px solid var(--accent); border-radius:12px; padding:24px 28px; margin:32px 0; }
.highlight-box p { font-size:14px; color:var(--text2); line-height:1.7; }
.highlight-box strong { color:var(--accent); }

/* ── FOOTER ── */
footer { background:var(--bg2); border-top:1px solid var(--border); padding:48px; text-align:center; position:relative; z-index:1; }
.footer-logo { font-family:'Syne',sans-serif; font-weight:800; font-size:22px; letter-spacing:-0.5px; margin-bottom:12px; background:linear-gradient(135deg,var(--accent),var(--accent2)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.footer-desc { font-size:13px; color:var(--text3); margin-bottom:32px; }
.footer-links { display:flex; gap:32px; justify-content:center; list-style:none; margin-bottom:32px; flex-wrap:wrap; }
.footer-links a { color:var(--text3); text-decoration:none; font-size:13px; transition:color 0.2s; }
.footer-links a:hover { color:var(--accent); }
.footer-copy { font-size:12px; color:var(--text3); }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width:6px; height:6px; }
::-webkit-scrollbar-track { background:var(--bg); }
::-webkit-scrollbar-thumb { background:var(--border2); border-radius:3px; }
::-webkit-scrollbar-thumb:hover { background:var(--accent); }

/* ── RESPONSIVE ── */
@media (max-width:768px) {
    nav { padding:0 20px; }
    nav .nav-links { display:none; }
    section { padding:60px 20px; }
    .hero { padding:100px 20px 60px; }
    .arch-grid { grid-template-columns:1fr; }
    .case-grid { grid-template-columns:1fr; }
    .tech-grid { grid-template-columns:repeat(2,1fr); }
    .integration-list { grid-template-columns:1fr; }
    footer { padding:32px 20px; }
}

/* ── REVEAL ── */
.reveal { opacity:0; transform:translateY(24px); transition:opacity 0.6s ease,transform 0.6s ease; }
.reveal.visible { opacity:1; transform:translateY(0); }