/* ===== RESET ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#0d0f14;--bg2:#12151c;
  --surface:#1a1f2e;--surface2:#222840;
  --border:#2a3050;
  --gold:#c9a84c;--gold-l:#e8c97a;
  --rust:#c45f3c;--rust-l:#e0845e;
  --text:#e2e8f0;--muted:#8a96b0;
  --accent:#5b8af5;--green:#7ec89e;
  --r:12px;--rs:6px;
  --shadow:0 4px 24px rgba(0,0,0,.5);
  --font:'Segoe UI',system-ui,sans-serif;
  --mono:'Fira Code','Cascadia Code',monospace;
}

html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;overflow-x:hidden}
a{color:var(--gold);text-decoration:none}
a:hover{color:var(--gold-l)}
code{font-family:var(--mono);font-size:.85em;background:var(--surface2);color:var(--gold-l);padding:2px 7px;border-radius:var(--rs)}

/* ===== NAVBAR ===== */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(13,15,20,.87);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);transition:background .3s;
}
.nav-inner{
  max-width:1300px;margin:0 auto;padding:.8rem 2rem;
  display:flex;align-items:center;gap:1.5rem;
}
.nav-logo{font-size:1.1rem;font-weight:700;color:var(--gold);white-space:nowrap;flex-shrink:0}
.nav-links{list-style:none;display:flex;align-items:center;gap:1.2rem;flex:1;flex-wrap:wrap}
.nav-links a{color:var(--muted);font-size:.85rem;font-weight:500;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--gold)}

/* ===== LANGUAGE PICKER ===== */
.lang-picker{display:flex;gap:.28rem;flex-shrink:0;flex-wrap:wrap}
.lang-btn{
  background:transparent;border:1px solid var(--border);
  color:var(--muted);font-size:.7rem;font-weight:700;
  padding:.22rem .48rem;border-radius:4px;cursor:pointer;
  transition:border-color .18s,color .18s,background .18s;
  font-family:var(--font);letter-spacing:.04em;
}
.lang-btn:hover{border-color:var(--gold);color:var(--gold)}
.lang-btn.active{background:var(--gold);border-color:var(--gold);color:var(--bg)}

/* ===== HERO ===== */
.hero{
  min-height:100vh;padding:7rem 2rem 4rem;
  display:flex;align-items:center;justify-content:center;
  gap:4rem;flex-wrap:wrap;position:relative;overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(ellipse 60% 50% at 18% 40%,rgba(201,168,76,.09) 0%,transparent 70%),
    radial-gradient(ellipse 50% 60% at 82% 60%,rgba(91,138,245,.07) 0%,transparent 70%);
}
.hero-content{max-width:540px;z-index:1}
.hero-badge{
  display:inline-block;background:rgba(201,168,76,.12);
  border:1px solid rgba(201,168,76,.3);color:var(--gold);
  font-size:.76rem;font-weight:700;padding:.26rem .82rem;
  border-radius:20px;letter-spacing:.07em;text-transform:uppercase;margin-bottom:1.2rem;
}
.hero h1{
  font-size:clamp(2.8rem,6vw,4.5rem);font-weight:800;line-height:1.07;
  background:linear-gradient(135deg,var(--gold-l) 0%,var(--gold) 50%,var(--rust-l) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  margin-bottom:1.1rem;
}
.hero-sub{font-size:1.04rem;color:var(--muted);line-height:1.75;margin-bottom:2rem}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:2.4rem}

.btn-primary{
  background:linear-gradient(135deg,var(--gold),var(--rust));
  color:var(--bg)!important;font-weight:700;padding:.7rem 1.65rem;
  border-radius:30px;font-size:.93rem;
  transition:transform .2s,box-shadow .2s;
  box-shadow:0 4px 20px rgba(201,168,76,.3);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 28px rgba(201,168,76,.45)}
.btn-secondary{
  border:1px solid var(--border);color:var(--text)!important;
  padding:.7rem 1.65rem;border-radius:30px;font-size:.93rem;
  transition:border-color .2s,background .2s;
}
.btn-secondary:hover{border-color:var(--gold);background:rgba(201,168,76,.06)}

.hero-stats{display:flex;gap:1.8rem;flex-wrap:wrap}
.stat{display:flex;flex-direction:column}
.stat-num{font-size:1.75rem;font-weight:800;color:var(--gold);line-height:1}
.stat-label{font-size:.7rem;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin-top:.14rem}

/* ===== ARCH DIAGRAM ===== */
.hero-visual{z-index:1}
.arch-diagram{
  display:flex;flex-direction:column;align-items:center;gap:.5rem;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r);padding:1.5rem 1.8rem;box-shadow:var(--shadow);min-width:340px;
}
.arch-node{
  background:var(--surface2);border:1px solid var(--border);border-radius:var(--rs);
  padding:.45rem .9rem;font-size:.75rem;font-weight:600;text-align:center;
  line-height:1.4;transition:border-color .2s;font-family:var(--mono);
}
.arch-node small{font-weight:400;color:var(--muted);font-size:.68rem;font-family:var(--font)}
.arch-node:hover{border-color:var(--gold)}
.arch-node.gateway{border-color:rgba(91,138,245,.45);color:var(--accent);min-width:240px}
.arch-node.orchestrator{border-color:rgba(201,168,76,.45);color:var(--gold);min-width:270px}
.arch-node.shard{min-width:94px;font-size:.7rem}
.arch-node.worker{border-color:rgba(196,95,60,.35);color:var(--rust-l);min-width:86px}
.arch-node.db{border-color:rgba(100,180,120,.3);color:var(--green);min-width:90px;font-size:.7rem}
.arch-node.dim{opacity:.48}
.arch-arrow{font-size:.76rem;color:var(--muted)}
.arch-row{display:flex;gap:.42rem;flex-wrap:wrap;justify-content:center}

/* ===== SECTIONS ===== */
.section{padding:6rem 2rem}
.section-dark{background:var(--bg2)}
.container{max-width:1200px;margin:0 auto}
.section-title{font-size:clamp(1.75rem,4vw,2.4rem);font-weight:800;color:var(--gold);text-align:center;margin-bottom:.7rem}
.section-sub{text-align:center;color:var(--muted);font-size:1rem;margin-bottom:3rem;max-width:640px;margin-left:auto;margin-right:auto}

/* ===== FEATURES GRID ===== */
.features-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:1.3rem}
.feature-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  padding:1.6rem;transition:transform .22s,border-color .22s,box-shadow .22s;
}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(201,168,76,.4);box-shadow:0 8px 32px rgba(0,0,0,.4)}
.feature-icon{font-size:1.85rem;margin-bottom:.6rem}
.feature-card h3{font-size:.98rem;font-weight:700;color:var(--text);margin-bottom:.42rem}
.feature-card p{font-size:.87rem;color:var(--muted);line-height:1.68}

/* ===== DEEP DIVE ===== */
.deep-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:1.4rem}
.deep-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  padding:1.6rem;transition:border-color .2s;
}
.deep-card:hover{border-color:rgba(91,138,245,.35)}
.deep-cat{
  font-size:.82rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;
  color:var(--accent);margin-bottom:1rem;border-bottom:1px solid var(--border);padding-bottom:.5rem;
}
.deep-card ul{list-style:none;display:flex;flex-direction:column;gap:.55rem}
.deep-card li{
  font-size:.87rem;color:var(--muted);line-height:1.55;padding-left:1.1rem;position:relative;
}
.deep-card li::before{content:'▸';position:absolute;left:0;color:var(--gold);font-size:.75rem;top:.1rem}

/* ===== ARCH TABLE ===== */
.arch-table-wrapper{overflow-x:auto;border-radius:var(--r);border:1px solid var(--border);margin-bottom:2.5rem}
.arch-table{width:100%;border-collapse:collapse;font-size:.875rem}
.arch-table thead{background:var(--surface)}
.arch-table th{text-align:left;padding:.78rem 1.2rem;color:var(--gold);font-size:.73rem;letter-spacing:.07em;text-transform:uppercase;border-bottom:1px solid var(--border)}
.arch-table td{padding:.78rem 1.2rem;color:var(--text);border-bottom:1px solid rgba(42,48,80,.5)}
.arch-table tr:last-child td{border-bottom:none}
.arch-table tbody tr:hover{background:var(--surface)}

/* ===== PRINCIPLES ===== */
.principles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.3rem}
.principle{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:1.4rem;display:flex;flex-direction:column;gap:.4rem}
.p-icon{font-size:1.4rem}
.principle strong{font-size:.95rem;color:var(--text)}
.principle p{font-size:.85rem;color:var(--muted)}

/* ===== TECH GRID ===== */
.tech-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:1rem}
.tech-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:.95rem 1.15rem;display:flex;flex-direction:column;gap:.28rem;transition:border-color .2s}
.tech-item:hover{border-color:rgba(91,138,245,.4)}
.tech-cat{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.tech-val{font-size:.9rem;font-weight:700;color:var(--accent)}

/* ===== PLUGINS ===== */
.plugins-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(175px,1fr));gap:1rem}
.plugin-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:1.1rem 1rem;text-align:center;transition:transform .2s,border-color .2s}
.plugin-card:hover{transform:translateY(-3px);border-color:rgba(196,95,60,.45)}
.plugin-icon{font-size:1.5rem;display:block;margin-bottom:.42rem}
.plugin-card strong{display:block;font-size:.8rem;color:var(--rust-l);margin-bottom:.28rem;font-family:var(--mono)}
.plugin-card p{font-size:.75rem;color:var(--muted)}

/* ===== FOOTER ===== */
.footer{background:var(--bg2);border-top:1px solid var(--border);padding:3rem 2rem 1.5rem}
.footer-inner{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:2rem;margin-bottom:2rem}
.footer-brand p{font-size:.83rem;color:var(--muted);margin-top:.38rem}
.footer-nav{display:flex;gap:1.4rem;flex-wrap:wrap;align-items:center}
.footer-nav a{font-size:.83rem;color:var(--muted);transition:color .2s}
.footer-nav a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid var(--border);padding-top:1.2rem;text-align:center}
.footer-bottom p{font-size:.78rem;color:var(--muted)}

/* ===== FADE-IN ===== */
.fade-in{opacity:0;transform:translateY(20px);transition:opacity .5s ease,transform .5s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ===== RESPONSIVE ===== */
@media(max-width:960px){.nav-links{display:none}}
@media(max-width:768px){
  .hero{flex-direction:column;padding:6rem 1.25rem 3rem;gap:2.5rem}
  .hero-visual{width:100%}.arch-diagram{min-width:unset;width:100%}
  .hero-stats{gap:1.2rem}
  .section{padding:4rem 1.25rem}
  .footer-inner{flex-direction:column}
  .lang-picker{gap:.22rem}
}