:root{
  --bg: #0B0D0F;
  --panel: #14171A;
  --panel-line: #23272B;
  --text: #E8EAED;
  --text-dim: #868E96;
  --text-faint: #4E555C;
  --cyan: #4FD1C5;
  --rose: #E8637A;
  --amber: #D4A574;
  --green: #7FBF7F;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',sans-serif;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
.mono{font-family:'IBM Plex Mono',monospace;}
.display{font-family:'Space Grotesk',sans-serif;}

/* subtle grain / grid backdrop */
.grid-bg{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
}

.wrap{max-width:1180px; margin:0 auto; padding:0 32px; position:relative; z-index:1;}

/* NAV */
nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:22px 32px; max-width:1180px; margin:0 auto;
  position:relative; z-index:10;
}
.logo{display:flex; align-items:center; gap:10px; font-size:16px; letter-spacing:0.02em;}
.logo-mark{width:18px;height:18px; position:relative; flex-shrink:0;}
.logo-mark svg{width:100%;height:100%;}
nav .links{display:flex; gap:36px; align-items:center; position:relative;}
nav .links a{color:var(--text-dim); text-decoration:none; font-size:14px; transition:color .15s;}
nav .links a.active{color:var(--text);}
nav .links a:hover{color:var(--text);}
.tab-indicator{position:absolute; bottom:-6px; left:0; height:2px; background:var(--cyan); border-radius:1px; transition:transform .25s cubic-bezier(.33,1,.68,1), width .25s cubic-bezier(.33,1,.68,1); pointer-events:none;}
.btn-ghost{
  border:1px solid var(--panel-line); padding:8px 16px; border-radius:3px;
  color:var(--text) !important; font-size:13px !important;
}
.nav-user-info{color:var(--text-faint); font-size:13px; margin-right:-8px;}

/* HERO */
.hero{padding:88px 0 40px; text-align:left;}
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:12px; letter-spacing:0.08em; color:var(--cyan);
  margin-bottom:28px; text-transform:uppercase;
}
.eyebrow::before{content:''; width:6px; height:6px; background:var(--cyan); display:inline-block; border-radius:1px;}
h1.headline{
  font-size:clamp(42px, 6.2vw, 84px);
  font-weight:600; line-height:0.98; letter-spacing:-0.02em;
  max-width:820px;
}
h1.headline .out{color:var(--text-faint);}
.sub{
  margin-top:26px; font-size:18px; line-height:1.6; color:var(--text-dim);
  max-width:520px;
}
.cta-row{display:flex; gap:14px; margin-top:38px; flex-wrap:wrap;}
.btn-primary{
  background:var(--cyan); color:#04141F; border:none; padding:13px 24px;
  border-radius:3px; font-weight:600; font-size:14px; cursor:pointer;
  font-family:inherit; transition:transform .15s, box-shadow .15s;
}
.btn-primary:hover{transform:translateY(-1px); box-shadow:0 6px 20px rgba(79,209,197,0.18);}
.btn-secondary{
  background:transparent; color:var(--text); border:1px solid var(--panel-line);
  padding:13px 24px; border-radius:3px; font-size:14px; cursor:pointer; font-family:inherit;
  transition:border-color .15s;
}
.btn-secondary:hover{border-color:var(--text-dim);}

/* RAIL — signature element */
.rail-section{margin-top:72px; position:relative;}
.rail-track{
  position:relative; height:1px; background:var(--panel-line);
  margin:0 0 0 0;
}
.rail-stages{
  display:grid; grid-template-columns:repeat(5,1fr); gap:0;
  margin-top:-1px;
}
.stage{position:relative; padding-top:36px;}
.stage-dot{
  position:absolute; top:-4px; left:0; width:9px; height:9px; border-radius:50%;
  background:var(--bg); border:2px solid var(--text-faint);
}
.stage.active .stage-dot{border-color:var(--cyan); background:var(--cyan);}
.stage-label{
  font-size:11px; letter-spacing:0.08em; text-transform:uppercase; color:var(--text-faint);
  margin-bottom:14px;
}
.stage.active .stage-label{color:var(--cyan);}
.stage-viz{height:100px; display:flex; align-items:center; justify-content:flex-start;}
.stage-viz svg{width:100%; height:100%; overflow:visible;}
.rail-caption{
  margin-top:22px; font-size:13px; color:var(--text-faint); max-width:600px; line-height:1.6;
}

/* SECTION HEADERS */
.section{padding:120px 0;}
.section-tag{
  font-size:12px; letter-spacing:0.1em; text-transform:uppercase; color:var(--text-faint);
  margin-bottom:16px; font-family:'IBM Plex Mono',monospace;
}
h2.section-title{
  font-size:clamp(28px,3.4vw,42px); font-weight:600; letter-spacing:-0.01em; max-width:640px;
}
.section-sub{color:var(--text-dim); font-size:16px; max-width:560px; margin-top:16px; line-height:1.65;}

/* STATUS TERMINAL */
.terminal{
  background:var(--panel); border:1px solid var(--panel-line); border-radius:6px;
  margin-top:48px; overflow:hidden;
}
.terminal-head{
  display:flex; align-items:center; gap:8px; padding:12px 18px;
  border-bottom:1px solid var(--panel-line); background:rgba(255,255,255,0.015);
}
.terminal-dot{width:9px; height:9px; border-radius:50%; background:var(--panel-line);}
.terminal-title{margin-left:8px; font-size:12px; color:var(--text-faint); font-family:'IBM Plex Mono',monospace;}
.terminal-body{padding:26px 28px; font-family:'IBM Plex Mono',monospace; font-size:13.5px; line-height:2.1;}
.status-row{display:flex; align-items:center; gap:16px; flex-wrap:wrap;}
.status-stage{color:var(--text-dim); width:150px; flex-shrink:0;}
.status-desc{color:var(--text-faint); width:220px; flex-shrink:0;}
.status-flag{
  padding:1px 9px; border-radius:2px; font-size:11.5px; letter-spacing:0.03em;
}
.flag-pass{color:var(--green); background:rgba(127,191,127,0.1);}
.flag-progress{color:var(--amber); background:rgba(212,165,116,0.1);}
.flag-target{color:var(--text-faint); background:rgba(255,255,255,0.04);}
.status-note{color:var(--text-faint); font-size:12.5px;}

/* MODEL IS THE CHIP */
.chip-panels{display:grid; grid-template-columns:1fr 1fr; gap:1px; margin-top:48px; background:var(--panel-line); border-radius:6px; overflow:hidden;}
.chip-panel{background:var(--panel); padding:36px;}
.chip-panel .tag{font-family:'IBM Plex Mono',monospace; font-size:11px; letter-spacing:0.08em; text-transform:uppercase; margin-bottom:18px;}
.chip-panel.sram .tag{color:var(--cyan);}
.chip-panel.rom .tag{color:var(--amber);}
.chip-panel h3{font-size:20px; font-weight:600; margin-bottom:12px; font-family:'Space Grotesk',sans-serif;}
.chip-panel p{color:var(--text-dim); font-size:14.5px; line-height:1.7;}
.chip-viz{height:88px; margin:22px 0 6px;}

/* MODULES & ARCHITECTURE SUPPORT */
.modules-section .section-sub{margin-bottom:0;}
.module-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-top:44px;}
.module-card{background:var(--panel); border:1px solid var(--panel-line); border-radius:6px; padding:28px; transition:border-color .2s;}
.module-card:hover{border-color:var(--text-faint);}
.module-num{font-family:'IBM Plex Mono',monospace; font-size:11px; color:var(--text-faint); letter-spacing:0.06em; margin-bottom:14px;}
.module-card h3{font-size:17px; font-weight:600; margin-bottom:10px;}
.module-card p{font-size:13.5px; color:var(--text-dim); line-height:1.65;}

.arch-support{display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-top:40px; padding-top:40px; border-top:1px solid var(--panel-line);}
.arch-card{padding:20px; background:var(--panel); border:1px solid var(--panel-line); border-radius:6px;}
.arch-tag{display:inline-block; font-family:'IBM Plex Mono',monospace; font-size:9.5px; letter-spacing:0.08em; text-transform:uppercase; padding:3px 10px; border-radius:2px; background:rgba(127,191,127,0.1); color:var(--green); margin-bottom:14px;}
.arch-tag.in-progress{background:rgba(212,165,116,0.1); color:var(--amber);}
.arch-label{font-size:20px; font-weight:600; letter-spacing:-0.01em; margin-bottom:8px;}
.arch-desc{font-size:13px; color:var(--text-dim); line-height:1.6;}

/* TIMING TABLE */
.timing-table-wrap{max-width:700px; margin-top:48px; border:1px solid var(--panel-line); border-radius:6px; overflow:hidden;}
.timing-table{width:100%; border-collapse:collapse; font-size:13.5px;}
.timing-table thead{background:rgba(255,255,255,0.015);}
.timing-table th{padding:12px 16px; text-align:left; color:var(--text-faint); font-size:11px; letter-spacing:0.06em; text-transform:uppercase; border-bottom:1px solid var(--panel-line);}
.timing-table td{padding:12px 16px; color:var(--text-dim); border-bottom:1px solid var(--panel-line);}
.timing-table tr:last-child td{border-bottom:none;}
.timing-table .green{color:var(--green);}
.timing-table .amber{color:var(--amber);}
.timing-table-note{font-size:12px; color:var(--text-faint); padding:14px 18px; background:var(--panel); border-top:1px solid var(--panel-line); margin:0;}
.timing-table .status-flag{font-size:11px; padding:1px 8px;}
  .module-grid{grid-template-columns:repeat(2,1fr);}
  .arch-support{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:540px){
  .module-grid{grid-template-columns:1fr;}
  .arch-support{grid-template-columns:1fr;}
}

/* VELOCITY CHART */
.velocity{margin-top:56px; display:grid; grid-template-columns:1.3fr 1fr; gap:56px; align-items:center;}
.velocity-chart{background:var(--panel); border:1px solid var(--panel-line); border-radius:6px; padding:32px;}
.velocity-list{display:flex; flex-direction:column; gap:22px;}
.velocity-item{display:flex; gap:14px;}
.velocity-item .mark{width:6px; height:6px; border-radius:50%; background:var(--rose); margin-top:8px; flex-shrink:0;}
.velocity-item p{font-size:14.5px; color:var(--text-dim); line-height:1.65;}
.velocity-item strong{color:var(--text); font-weight:500;}

/* TWO PATHS */
.paths{display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-top:48px;}
.path-card{
  background:var(--panel); border:1px solid var(--panel-line); border-radius:6px;
  padding:36px; position:relative; transition:border-color .2s;
}
.path-card:hover{border-color:var(--text-faint);}
.path-card .num{font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--text-faint); margin-bottom:20px;}
.path-card h3{font-family:'Space Grotesk',sans-serif; font-size:22px; font-weight:600; margin-bottom:14px;}
.path-card p{color:var(--text-dim); font-size:14.5px; line-height:1.7; margin-bottom:22px;}
.path-card a{color:var(--cyan); font-size:14px; text-decoration:none; font-weight:500;}
.path-card a:hover{text-decoration:underline;}

/* TOOLCHAIN STRIP */
.toolchain{padding:60px 0; border-top:1px solid var(--panel-line); border-bottom:1px solid var(--panel-line);}
.toolchain-row{display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:24px;}
.toolchain-label{font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--text-faint); text-transform:uppercase; letter-spacing:0.08em;}
.toolchain-names{display:flex; gap:36px; flex-wrap:wrap;}
.toolchain-names span{font-family:'Space Grotesk',sans-serif; font-size:16px; color:var(--text-dim); font-weight:500;}

/* FOOTER CTA */
.footer-cta{padding:120px 0 60px; text-align:left;}
.footer-cta h2{font-size:clamp(32px,4vw,52px); font-weight:600; letter-spacing:-0.02em; max-width:600px;}
.footer-cta p{color:var(--text-dim); font-size:16px; margin-top:18px; max-width:480px; line-height:1.6;}
.signup-row{display:flex; gap:12px; margin-top:32px; max-width:440px;}
.signup-row input{
  flex:1; background:var(--panel); border:1px solid var(--panel-line); border-radius:3px;
  padding:13px 16px; color:var(--text); font-family:inherit; font-size:14px;
}
.signup-row input:focus{outline:none; border-color:var(--cyan);}
.footer-meta{
  margin-top:100px; padding-top:28px; border-top:1px solid var(--panel-line);
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:16px;
}
.footer-meta span{color:var(--text-faint); font-size:13px;}
.footer-links{display:flex; gap:28px;}
.footer-links a{color:var(--text-faint); font-size:13px; text-decoration:none;}
.footer-links a:hover{color:var(--text-dim);}

@media (max-width:1100px){
  .arch-support{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:860px){
  .rail-stages{grid-template-columns:repeat(3,1fr); row-gap:36px;}
  .stage:nth-child(4), .stage:nth-child(5){grid-column:span 1;}
  .chip-panels{grid-template-columns:1fr;}
  .velocity{grid-template-columns:1fr;}
  .paths{grid-template-columns:1fr;}
  .module-grid{grid-template-columns:repeat(2,1fr);}
  .arch-support{grid-template-columns:repeat(2,1fr);}
  nav .links{display:none;}
}
@media (max-width:540px){
  .module-grid{grid-template-columns:1fr;}
  .arch-support{grid-template-columns:1fr;}
}

::selection{background:var(--cyan); color:#04141F;}