/* =========================================================
   Second Brain — Landing Page
   ========================================================= */

:root {
  --ink: #0A0B12;
  --ink-2: #11131C;
  --ink-3: #1A1D27;
  --paper: #F3EFE7;
  --paper-2: #EAE5DA;
  --paper-3: #DDD7C8;
  --accent: #2563EB;
  --accent-2: #00D4A8;
  --accent-warm: #FF6A3D;
  --muted-ink: #5A5D6B;
  --muted-paper: rgba(243, 239, 231, 0.62);
  --muted-paper-strong: rgba(243, 239, 231, 0.85);
  --line-ink: rgba(11, 13, 20, 0.12);
  --line-paper: rgba(243, 239, 231, 0.14);

  --font-sans: "Geist", "Inter", system-ui, sans-serif;
  --font-serif: "Instrument Serif", "Times New Roman", serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;

  --max-w: 1280px;
  --pad-x: clamp(20px, 4vw, 64px);
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--paper);
  background: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "ss02";
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
::selection { background: var(--accent); color: #fff; }

.shell {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  width: 100%;
}

/* ---------- typography ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--accent-2);
}
.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  background: currentColor;
  border-radius: 2px;
}
.theme-paper .eyebrow { color: var(--accent); }

.h-display {
  font-size: clamp(48px, 7vw, 96px);
  font-weight: 500;
  line-height: 1.0;
  letter-spacing: -0.035em;
  margin: 0;
  text-wrap: balance;
}
.h-section {
  font-size: clamp(36px, 4.5vw, 64px);
  font-weight: 500;
  line-height: 1.04;
  letter-spacing: -0.028em;
  margin: 0;
  text-wrap: balance;
}
.h-3 {
  font-size: clamp(22px, 1.8vw, 28px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0;
}
.lead {
  font-size: clamp(18px, 1.4vw, 22px);
  line-height: 1.45;
  font-weight: 400;
  color: var(--muted-paper-strong);
  margin: 0;
  text-wrap: pretty;
  max-width: 60ch;
}
.body {
  font-size: 17px;
  line-height: 1.55;
  color: var(--muted-paper);
  margin: 0;
}
.italic-serif {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.mono { font-family: var(--font-mono); font-weight: 500; }
.grad {
  background: linear-gradient(95deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.005em;
  white-space: nowrap;
  transition: transform .15s ease, background .15s ease, color .15s ease, box-shadow .15s ease;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 0 0 0 rgba(110, 91, 240, 0);
}
.btn-primary:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 30px -10px rgba(110, 91, 240, 0.55);
}
.btn-primary .arrow { transition: transform .2s ease; }
.btn-primary:hover .arrow { transform: translateX(3px); }
.btn-ghost {
  background: transparent;
  color: var(--paper);
  border: 1px solid var(--line-paper);
}
.btn-ghost:hover { border-color: var(--muted-paper); background: rgba(255,255,255,0.03); }
.theme-paper .btn-ghost {
  color: var(--ink);
  border-color: var(--line-ink);
}
.theme-paper .btn-ghost:hover { background: rgba(0,0,0,0.03); }
.theme-paper .btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.theme-paper .btn-primary:hover { background: #000; }
.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover { background: #5C4AE8; transform: translateY(-1px); box-shadow: 0 12px 32px -10px rgba(110, 91, 240, 0.65); }

/* ---------- NAV ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: rgba(10, 11, 18, 0.75);
  border-bottom: 1px solid var(--line-paper);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
}
.brand-dot {
  width: 22px; height: 22px; border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, var(--accent) 0%, transparent 55%),
    radial-gradient(circle at 70% 65%, var(--accent-2) 0%, transparent 55%),
    rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.2);
}
.brand-mark-img {
  height: 30px;
  width: auto;
  display: block;
}
.footer-logo {
  height: 38px;
  width: auto;
  display: block;
}
.nav-links {
  display: flex;
  gap: 32px;
  font-size: 15px;
  color: var(--muted-paper-strong);
}
.nav-links a:hover { color: var(--paper); }
.nav-cta {
  display: flex;
  gap: 12px;
  align-items: center;
}
.nav-login {
  font-size: 15px;
  color: var(--muted-paper-strong);
  padding: 8px 14px;
  border-radius: 999px;
}
.nav-login:hover { color: var(--paper); }

/* hamburger toggle — hidden on desktop */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-right: -10px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
}
.nav-toggle-bars {
  position: relative;
  width: 22px;
  height: 16px;
  display: block;
}
.nav-toggle-bars i {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--paper);
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease, top .25s ease;
}
.nav-toggle-bars i:nth-child(1) { top: 0; }
.nav-toggle-bars i:nth-child(2) { top: 7px; }
.nav-toggle-bars i:nth-child(3) { top: 14px; }
.nav-open .nav-toggle-bars i:nth-child(1) { top: 7px; transform: rotate(45deg); }
.nav-open .nav-toggle-bars i:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle-bars i:nth-child(3) { top: 7px; transform: rotate(-45deg); }

/* mobile dropdown panel */
.nav-mobile {
  border-top: 1px solid var(--line-paper);
  background: rgba(10, 11, 18, 0.96);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 8px var(--pad-x) 24px;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height .3s ease, opacity .25s ease, padding .3s ease;
}
.nav-mobile.is-open {
  max-height: 80vh;
  opacity: 1;
}
.nav-mobile-links {
  display: flex;
  flex-direction: column;
}
.nav-mobile-links a {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--muted-paper-strong);
  padding: 16px 4px;
  border-bottom: 1px solid var(--line-paper);
}
.nav-mobile-links a:active { color: var(--paper); }
.nav-mobile-cta {
  width: 100%;
  justify-content: center;
  margin-top: 20px;
  padding: 16px 22px;
}

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; }
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  padding: clamp(64px, 9vw, 128px) 0 clamp(80px, 9vw, 120px);
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  top: -200px; right: -100px;
  width: 900px; height: 900px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(110, 91, 240, 0.35) 0%, transparent 60%);
  filter: blur(80px);
  z-index: -1;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -300px; left: -100px;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 168, 0.18) 0%, transparent 60%);
  filter: blur(80px);
  z-index: -1;
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(to right, rgba(243,239,231,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(243,239,231,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(40px, 5vw, 80px);
  align-items: center;
}
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 7px 14px 7px 8px;
  border: 1px solid var(--line-paper);
  border-radius: 999px;
  font-size: 14px;
  color: var(--muted-paper-strong);
  margin-bottom: 28px;
  background: rgba(255,255,255,0.02);
}
.hero-badge .pill {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
}

.hero h1 {
  font-size: clamp(40px, 5.5vw, 84px);
  font-weight: 500;
  line-height: 1.0;
  letter-spacing: -0.038em;
  margin: 0 0 24px;
  text-wrap: balance;
}
.hero-sub {
  font-size: clamp(18px, 1.5vw, 22px);
  line-height: 1.5;
  color: var(--muted-paper-strong);
  margin: 0 0 36px;
  max-width: 56ch;
}
.hero-ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.hero-trust {
  margin-top: 32px;
  font-size: 14px;
  color: var(--muted-paper);
  display: flex;
  align-items: center;
  gap: 10px;
}
.hero-trust .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 12px var(--accent-2); }

/* Hero visual — TPR console */
.console {
  position: relative;
  border: 1px solid var(--line-paper);
  border-radius: var(--r-xl);
  background: linear-gradient(160deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
  box-shadow: 0 30px 80px -30px rgba(0,0,0,0.6), 0 0 0 1px rgba(110,91,240,0.08) inset;
  overflow: hidden;
  backdrop-filter: blur(10px);
}
.console-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line-paper);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted-paper);
}
.console-bar .dots {
  display: flex;
  gap: 6px;
}
.console-bar .dots span {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(255,255,255,0.12);
}
.console-bar .path {
  margin-left: 8px;
}
.console-body {
  padding: 24px 24px 28px;
  display: grid;
  gap: 18px;
}
.console-row {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
}
.console-row .k {
  color: var(--muted-paper);
}
.console-row .bar {
  height: 8px;
  background: rgba(255,255,255,0.05);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}
.console-row .fill {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px;
  transform-origin: left center;
}
.console-row.before .fill { width: 100%; background: rgba(255,106,61,0.55); }
.console-row.after .fill { width: 4%; background: var(--accent-2); }
.console-row .v {
  color: var(--paper);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.console-result {
  margin-top: 6px;
  padding-top: 22px;
  border-top: 1px dashed var(--line-paper);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 12px;
}
.console-result-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-paper);
  margin-bottom: 6px;
}
.console-result-big {
  font-family: var(--font-mono);
  font-size: clamp(48px, 5vw, 72px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 0.95;
  color: var(--accent-2);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.console-result-big small {
  font-size: 13px;
  color: var(--muted-paper);
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  line-height: 1;
}
.console-result-delta {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(0,212,168,0.12);
  color: var(--accent-2);
  border: 1px solid rgba(0,212,168,0.3);
}

.console-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-top: 1px solid var(--line-paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted-paper);
  background: rgba(0,0,0,0.2);
}
.console-foot .live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-2);
}
.console-foot .live::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 8px var(--accent-2);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ---------- STACK STRIP ---------- */
.stack-strip {
  padding: 56px 0 64px;
  border-top: 1px solid var(--line-paper);
  border-bottom: 1px solid var(--line-paper);
  background: rgba(0,0,0,0.18);
}
.stack-strip-label {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-paper);
  margin-bottom: 32px;
}
.stack-strip-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}
.stack-logo {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--muted-paper-strong);
  opacity: 0.8;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.stack-logo .sym { color: var(--accent-2); font-family: var(--font-mono); }

/* ---------- SECTION CHROME ---------- */
.section {
  padding: clamp(80px, 10vw, 144px) 0;
  position: relative;
}
.section-head {
  max-width: 920px;
  margin-bottom: clamp(48px, 6vw, 80px);
}
.section-head .eyebrow {
  margin-bottom: 24px;
}
.theme-paper {
  background: var(--paper);
  color: var(--ink);
}
.theme-paper .body { color: var(--muted-ink); }
.theme-paper .lead { color: var(--muted-ink); }

/* ---------- PROBLEM ---------- */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 860px) {
  .problem-grid { grid-template-columns: 1fr; }
}
.problem-card {
  padding: 36px 32px;
  border: 1px solid var(--line-paper);
  border-radius: var(--r-lg);
  background: rgba(255,255,255,0.02);
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
}
.problem-card:hover {
  border-color: rgba(255,106,61,0.4);
  background: rgba(255,106,61,0.02);
  transform: translateY(-2px);
}
.problem-card .num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--accent-warm);
}
.problem-card .h-3 { color: var(--paper); }
.problem-card .body { color: var(--muted-paper); }

/* ---------- SOLUTION / ARCHITECTURE ---------- */
.arch {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 0;
}
@media (max-width: 980px) {
  .arch { grid-template-columns: 1fr; }
  .arch-arrow { display: none; }
}
.arch-node {
  padding: 36px 32px;
  border: 1px solid var(--line-ink);
  border-radius: var(--r-lg);
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-height: 320px;
}
.arch-node-label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.arch-node-label .step {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: inline-grid;
  place-items: center;
  font-size: 11px;
}
.arch-node h3 { margin: 0; }
.arch-node-desc { color: var(--muted-ink); font-size: 16px; line-height: 1.5; flex: 1; }
.arch-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.arch-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(110,91,240,0.08);
  color: var(--accent);
  border: 1px solid rgba(110,91,240,0.18);
}
.arch-center {
  background: linear-gradient(180deg, rgba(110,91,240,0.06), rgba(0,212,168,0.04));
  border-color: rgba(110,91,240,0.35);
  position: relative;
}
.arch-center::before {
  content: "★";
  position: absolute;
  top: 16px; right: 18px;
  font-size: 14px;
  color: var(--accent);
}
.arch-arrow {
  display: grid;
  place-items: center;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 24px;
  padding: 0 8px;
}

/* ---------- TPR HERO SECTION ---------- */
.tpr-section {
  padding: clamp(96px, 12vw, 160px) 0;
  background: var(--ink);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.tpr-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(110,91,240,0.18) 0%, transparent 50%),
    radial-gradient(ellipse at 10% 90%, rgba(0,212,168,0.10) 0%, transparent 50%);
  z-index: -1;
}
.tpr-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: end;
  margin-bottom: 64px;
}
@media (max-width: 860px) {
  .tpr-top { grid-template-columns: 1fr; gap: 32px; }
}
.tpr-acronym {
  font-family: var(--font-mono);
  font-size: clamp(96px, 14vw, 200px);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 0.85;
  margin: 0;
  color: var(--accent);
}
.tpr-expanded {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 400;
  margin: 18px 0 0;
  color: var(--paper);
}

.tpr-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 860px) {
  .tpr-compare { grid-template-columns: 1fr; }
}
.tpr-col {
  border: 1px solid var(--line-paper);
  border-radius: var(--r-lg);
  padding: 36px 32px;
  background: rgba(255,255,255,0.02);
  display: flex;
  flex-direction: column;
}
.tpr-col.us {
  background: linear-gradient(180deg, rgba(0,212,168,0.08), rgba(0,212,168,0.01));
  border-color: rgba(0,212,168,0.4);
}
.tpr-col-label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-paper);
  margin-bottom: 8px;
}
.tpr-col.us .tpr-col-label { color: var(--accent-2); }
.tpr-col-title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0 0 24px;
  color: var(--paper);
}
.tpr-rows {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.tpr-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line-paper);
  font-size: 15px;
}
.tpr-row:last-child { border-bottom: none; }
.tpr-row .k { color: var(--muted-paper); }
.tpr-row .v { font-family: var(--font-mono); font-weight: 500; color: var(--paper); white-space: nowrap; }
.tpr-result {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 2px solid var(--paper);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
.tpr-col.us .tpr-result { border-top-color: var(--accent-2); }
.tpr-result-k {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted-paper);
}
.tpr-col.us .tpr-result-k { color: var(--accent-2); }
.tpr-result-v {
  font-family: var(--font-mono);
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--paper);
}
.tpr-col.us .tpr-result-v { color: var(--accent-2); }

.tpr-callout {
  margin-top: 56px;
  padding: 32px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(0,212,168,0.3);
  background: rgba(0,212,168,0.04);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 32px;
  align-items: center;
}
@media (max-width: 760px) {
  .tpr-callout { grid-template-columns: 1fr; text-align: left; }
}
.tpr-callout-num {
  font-family: var(--font-mono);
  font-size: clamp(48px, 5vw, 64px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--accent-2);
}
.tpr-callout-txt {
  font-size: 18px;
  line-height: 1.5;
  color: var(--paper);
  max-width: 60ch;
}

/* ---------- PILLARS ---------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 860px) {
  .pillars { grid-template-columns: 1fr; }
}
.pillar {
  padding: 40px 32px;
  border: 1px solid var(--line-ink);
  border-radius: var(--r-lg);
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.pillar:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 50px -20px rgba(11,13,20,0.15);
}
.pillar-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--ink);
  display: grid;
  place-items: center;
  color: var(--paper);
  margin-bottom: 8px;
}
.pillar-icon svg { width: 22px; height: 22px; }
.pillar h3 { color: var(--ink); }
.pillar-desc { font-size: 16px; line-height: 1.5; color: var(--muted-ink); margin: 0; flex: 1; }
.pillar-bullets {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
  padding-top: 20px;
  border-top: 1px dashed var(--line-ink);
}
.pillar-bullet {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink);
  display: flex;
  gap: 12px;
  align-items: baseline;
}
.pillar-bullet::before {
  content: "→";
  color: var(--accent);
}

/* ---------- INTEGRATIONS ---------- */
.integ-section { background: var(--ink-2); }
.integ-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
@media (max-width: 980px) {
  .integ-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .integ-grid { grid-template-columns: repeat(2, 1fr); }
}
.integ-card {
  padding: 24px 22px;
  border: 1px solid var(--line-paper);
  border-radius: var(--r-md);
  background: rgba(255,255,255,0.02);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color .2s ease, background .2s ease;
  min-height: 110px;
}
.integ-card:hover {
  border-color: rgba(0,212,168,0.35);
  background: rgba(0,212,168,0.03);
}
.integ-card .kind {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-2);
}
.integ-card .name {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.012em;
  color: var(--paper);
}

.integ-bottom {
  margin-top: 40px;
  padding: 20px 24px;
  border-radius: var(--r-md);
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--line-paper);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  font-size: 15px;
  color: var(--muted-paper-strong);
}
@media (max-width: 700px) {
  .integ-bottom { flex-direction: column; align-items: flex-start; }
}
.integ-bottom strong { color: var(--paper); font-weight: 500; }

/* ---------- PRICING ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 980px) {
  .pricing-grid { grid-template-columns: 1fr; }
}
.price-card {
  padding: 36px 32px;
  border: 1px solid var(--line-ink);
  border-radius: var(--r-lg);
  background: #fff;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
}
.price-card.featured {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
  transform: scale(1.02);
  box-shadow: 0 30px 80px -30px rgba(110,91,240,0.4);
}
@media (max-width: 980px) {
  .price-card.featured { transform: none; }
}
.price-card .badge {
  position: absolute;
  top: -12px;
  left: 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--accent);
  color: #fff;
  padding: 6px 12px;
  border-radius: 999px;
  white-space: nowrap;
}
.price-tier {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}
.price-card.featured .price-tier { color: var(--accent-2); }
.price-amount {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.price-amount .num {
  font-size: 44px;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1;
}
.price-amount .unit {
  font-size: 15px;
  color: var(--muted-ink);
}
.price-card.featured .price-amount .unit { color: var(--muted-paper); }
.price-for {
  font-size: 15px;
  color: var(--muted-ink);
  line-height: 1.45;
}
.price-card.featured .price-for { color: var(--muted-paper); }
.price-cta {
  width: 100%;
  justify-content: center;
}
.price-feats {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 16px;
  margin-top: 4px;
  border-top: 1px dashed var(--line-ink);
}
.price-card.featured .price-feats { border-top-color: var(--line-paper); }
.price-feat {
  font-size: 15px;
  line-height: 1.4;
  display: flex;
  gap: 12px;
  align-items: baseline;
  color: var(--ink);
}
.price-card.featured .price-feat { color: var(--paper); }
.price-feat::before {
  content: "✓";
  color: var(--accent-2);
  font-family: var(--font-mono);
  font-weight: 600;
}

.pricing-extras {
  margin-top: 32px;
  padding: 24px 28px;
  border-radius: var(--r-md);
  background: var(--paper-2);
  border: 1px solid var(--line-ink);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}
@media (max-width: 760px) {
  .pricing-extras { grid-template-columns: 1fr; }
}
.pricing-extras .lbl {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-ink);
  margin-bottom: 6px;
}
.pricing-extras .txt {
  font-size: 16px;
  line-height: 1.45;
  color: var(--ink);
}

/* ---------- FAQ ---------- */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  max-width: 880px;
}
.faq-item {
  padding: 22px 28px;
  border: 1px solid var(--line-paper);
  border-radius: var(--r-md);
  background: rgba(255,255,255,0.02);
  transition: border-color .2s ease;
}
.faq-item[open] { border-color: rgba(110,91,240,0.4); background: rgba(110,91,240,0.03); }
.faq-summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.faq-summary::-webkit-details-marker { display: none; }
.faq-summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--accent-2);
  transition: transform .2s ease;
  font-weight: 400;
}
.faq-item[open] .faq-summary::after { transform: rotate(45deg); }
.faq-answer {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-paper);
  font-size: 16px;
  line-height: 1.55;
  color: var(--muted-paper-strong);
}

/* ---------- FINAL CTA ---------- */
.final-cta {
  padding: clamp(80px, 10vw, 144px) 0;
  background:
    radial-gradient(ellipse at 30% 30%, rgba(110,91,240,0.30) 0%, transparent 55%),
    radial-gradient(ellipse at 70% 70%, rgba(0,212,168,0.18) 0%, transparent 55%),
    var(--ink);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.final-cta .eyebrow {
  margin-bottom: 28px;
  justify-content: center;
}
.cta-brain {
  height: 72px;
  width: auto;
  display: block;
  margin: 0 auto 28px;
  filter: drop-shadow(0 8px 28px rgba(37, 99, 235, 0.35));
}
.final-cta h2 {
  font-size: clamp(48px, 7vw, 96px);
  font-weight: 500;
  line-height: 1.0;
  letter-spacing: -0.038em;
  margin: 0 0 32px;
  text-wrap: balance;
  max-width: 18ch;
  margin-inline: auto;
}
.final-cta .lead {
  margin-inline: auto;
  margin-bottom: 40px;
  font-size: 19px;
  text-wrap: balance;
}
.final-cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.final-cta-foot {
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted-paper);
}

/* ---------- FOOTER ---------- */
.footer {
  padding: 56px 0 40px;
  border-top: 1px solid var(--line-paper);
  background: var(--ink);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line-paper);
}
@media (max-width: 800px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 320px;
}
.footer-brand .brand { font-size: 17px; }
.footer-tag {
  font-size: 14px;
  color: var(--muted-paper);
  line-height: 1.5;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-paper);
  margin: 0 0 14px;
  font-weight: 500;
}
.footer-col ul {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col a {
  font-size: 14px;
  color: var(--muted-paper-strong);
}
.footer-col a:hover { color: var(--paper); }
.footer-bot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted-paper);
  flex-wrap: wrap;
  gap: 16px;
}

/* ---------- micro animations ---------- */
@keyframes fillBar {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}
.console-row .fill {
  animation: fillBar 1.2s cubic-bezier(.2,.7,.2,1) both;
}
.console-row.after .fill { animation-delay: .4s; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* =========================================================
   MOBILE — primary channel, handled with care
   ========================================================= */

/* prevent horizontal scroll from decorative blur orbs */
html, body { overflow-x: hidden; }
body { -webkit-tap-highlight-color: rgba(110,91,240,0.2); }

/* ---- Tablet / small laptop ---- */
@media (max-width: 760px) {
  .section { padding: 72px 0; }
  .section-head { margin-bottom: 44px; }
  .hero { padding: 56px 0 72px; }
}

/* ---- Phone ---- */
@media (max-width: 640px) {
  /* Hero */
  .hero { padding: 40px 0 56px; }
  .hero::before { width: 600px; height: 600px; top: -160px; right: -180px; }
  .hero::after { display: none; }
  .hero-badge {
    font-size: 12.5px;
    align-items: flex-start;
    line-height: 1.35;
    padding: 8px 14px 8px 8px;
    margin-bottom: 22px;
  }
  .hero h1 { font-size: clamp(36px, 11vw, 52px); margin-bottom: 18px; }
  .hero-sub { font-size: 17px; margin-bottom: 28px; }
  .hero-ctas { flex-direction: column; align-items: stretch; gap: 10px; }
  .hero-ctas .btn { width: 100%; justify-content: center; padding: 15px 22px; }
  .hero-trust { margin-top: 26px; font-size: 13px; align-items: flex-start; }

  /* Console */
  .console-bar { padding: 12px 14px; font-size: 11.5px; }
  .console-body { padding: 18px 16px 20px; gap: 14px; }
  .console-row { grid-template-columns: 84px 1fr auto; gap: 10px; font-size: 11.5px; }
  .console-result { grid-template-columns: 1fr; gap: 14px; }
  .console-result-delta { justify-self: start; }
  .console-foot { padding: 12px 16px; font-size: 11px; }

  /* Sections */
  .section { padding: 60px 0; }
  .section-head { margin-bottom: 40px; }

  /* Stack strip */
  .stack-strip { padding: 40px 0 44px; }
  .stack-strip-row { gap: 22px 28px; }
  .stack-logo { font-size: 18px; }

  /* Architecture nodes */
  .arch-node { min-height: 0; padding: 28px 24px; }

  /* TPR */
  .tpr-section { padding: 72px 0; }
  .tpr-top { margin-bottom: 40px; }
  .tpr-col { padding: 28px 24px; }
  .tpr-callout {
    margin-top: 36px;
    padding: 28px 24px;
    gap: 20px;
  }
  .tpr-callout .btn { width: 100%; justify-content: center; }

  /* Pillars */
  .pillar { padding: 32px 26px; }

  /* Pricing */
  .price-card { padding: 32px 26px; }
  .pricing-extras { padding: 24px; gap: 24px; }

  /* FAQ */
  .faq-item { padding: 18px 22px; }
  .faq-summary { font-size: 16.5px; gap: 16px; }

  /* Final CTA */
  .final-cta { padding: 72px 0; }
  .final-cta h2 { font-size: clamp(40px, 12vw, 64px); }
  .final-cta-actions { flex-direction: column; align-items: stretch; }
  .final-cta-actions .btn { width: 100%; justify-content: center; }

  /* Footer */
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px 24px;
  }
  .footer-brand { grid-column: 1 / -1; max-width: none; }
  .footer-bot {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

/* ---- Small phone ---- */
@media (max-width: 380px) {
  :root { --pad-x: 18px; }
  .hero h1 { font-size: 34px; }
  .console-row { grid-template-columns: 76px 1fr auto; gap: 8px; }
  .stack-strip-row { gap: 18px 22px; }
  .footer-top { grid-template-columns: 1fr; }
}