:root {
  --bg:
    radial-gradient(ellipse 900px 650px at 12% 18%, rgba(16,150,100,0.30), transparent 60%),
    radial-gradient(ellipse 750px 550px at 88% 8%, rgba(180,230,200,0.40), transparent 55%),
    radial-gradient(ellipse 950px 750px at 78% 88%, rgba(20,110,78,0.26), transparent 62%),
    radial-gradient(ellipse 700px 550px at 15% 90%, rgba(110,210,160,0.30), transparent 55%),
    #eaf6ee;
  --bg-soft:
    radial-gradient(ellipse 800px 600px at 85% 15%, rgba(20,110,78,0.28), transparent 58%),
    radial-gradient(ellipse 700px 550px at 8% 72%, rgba(150,225,185,0.35), transparent 55%),
    radial-gradient(ellipse 850px 650px at 55% 94%, rgba(16,150,100,0.24), transparent 60%),
    #e1f0e6;
  --surface: #f7fcf9;
  --surface-2: #e7f4ec;
  --border: rgba(16,60,40,0.12);
  --border-strong: rgba(16,60,40,0.24);
  --text: #10251c;
  --text-dim: #4c6b5c;
  --text-dimmer: #7e9a8c;
  --plural: #ff7a1a;
  --plural-soft: #b34c00;
  --verb: #ed4746;
  --verb-soft: #a41f1e;
  --grad: linear-gradient(120deg, var(--plural), var(--verb));
  --radius: 18px;
  --radius-sm: 12px;
  --shadow-lg: 0 30px 80px -20px rgba(16,60,40,0.18);
  font-size: 16px;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 2;
}
.wrap.narrow { max-width: 800px; }
.wrap.center, .center { text-align: center; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(234,246,238,0.75);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.brand-mark { position: relative; width: 26px; height: 26px; flex-shrink: 0; }
.dot { position: absolute; width: 14px; height: 14px; border-radius: 50%; }
.dot-1 { background: var(--plural); top: 0; left: 0; }
.dot-2 { background: var(--verb); bottom: 0; right: 0; }
.brand-name { font-weight: 800; font-size: 1.15rem; letter-spacing: -0.02em; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { color: var(--text-dim); text-decoration: none; font-size: 0.92rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; gap: 10px; }
.nav-burger { display: none; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 18px; border-radius: 999px; font-weight: 600; font-size: 0.9rem;
  text-decoration: none; border: 1px solid transparent; transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s, border-color 0.2s;
  cursor: pointer; white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-solid { background: var(--plural); color: #ffffff; }
.btn-solid:hover { box-shadow: 0 10px 26px -8px rgba(255,122,26,0.55); }
.btn-ghost { background: rgba(16,60,40,0.05); color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { background: rgba(16,60,40,0.1); }
.btn-outline { background: var(--verb); color: #ffffff; border-color: transparent; }
.btn-outline:hover { box-shadow: 0 10px 26px -8px rgba(237,71,70,0.5); }
.btn-lg { padding: 14px 26px; font-size: 1rem; }

/* hero */
.hero { padding: 120px 0 80px; position: relative; background: var(--bg); }
.eyebrow {
  font-family: "JetBrains Mono", monospace; font-size: 0.75rem; letter-spacing: 0.18em;
  color: var(--text-dimmer); font-weight: 600; margin: 0 0 18px;
}
.hero-title {
  font-size: clamp(2.6rem, 6vw, 4.6rem); font-weight: 900; letter-spacing: -0.03em; line-height: 1.05; margin: 0 0 28px;
}
.grad-text {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.text-plural { color: var(--plural); }
.text-verb { color: var(--verb); }
.hero-sub { font-size: 1.2rem; color: var(--text-dim); max-width: 700px; margin: 0 0 34px; }
.hero-sub strong { color: var(--text); }
.hero-cta { display: flex; gap: 14px; margin-bottom: 16px; }
.hero-cta.center { justify-content: center; }
.hero-fine { font-family: "JetBrains Mono", monospace; font-size: 0.78rem; color: var(--text-dimmer); }

/* hero visual */
.hero-visual { margin-top: 76px; }
.dual-panel {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 20px; align-items: center;
}
.panel {
  background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); overflow: hidden;
}
.panel-head { display: flex; align-items: center; gap: 10px; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.tag { font-family: "JetBrains Mono", monospace; font-size: 0.68rem; font-weight: 700; letter-spacing: 0.08em; padding: 3px 9px; border-radius: 6px; }
.tag-plural { background: rgba(255,122,26,0.18); color: var(--plural-soft); }
.tag-verb { background: rgba(237,71,70,0.18); color: var(--verb-soft); }
.panel-file { font-family: "JetBrains Mono", monospace; font-size: 0.78rem; color: var(--text-dimmer); }
.panel-body { padding: 16px 0; font-family: "JetBrains Mono", monospace; font-size: 0.82rem; }
.code-line { display: flex; align-items: center; gap: 14px; padding: 5px 18px; position: relative; color: var(--text-dim); }
.code-line .ln { width: 14px; color: var(--text-dimmer); flex-shrink: 0; }
.code-line.active-a { background: rgba(255,122,26,0.14); color: var(--text); }
.code-line.active-b { background: rgba(237,71,70,0.14); color: var(--text); }
.cursor-chip { margin-left: auto; font-size: 0.65rem; padding: 2px 8px; border-radius: 999px; flex-shrink: 0; }
.chip-a { background: var(--plural); color: #ffffff; }
.chip-b { background: var(--verb); color: #ffffff; }
.panel-foot { padding: 10px 18px; border-top: 1px solid var(--border); font-family: "JetBrains Mono", monospace; font-size: 0.72rem; color: var(--text-dimmer); }

.trail-body { padding: 14px 18px; display: flex; flex-direction: column; gap: 10px; }
.trail-row { display: flex; align-items: center; gap: 10px; color: var(--text-dim); }
.trail-row em { color: var(--text); font-style: normal; font-weight: 600; }
.trail-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.trail-dot.ok { background: var(--plural); }
.trail-dot.warn { background: var(--verb); }
.trail-dot.land-dot { background: var(--verb); box-shadow: 0 0 0 4px rgba(237,71,70,0.2); }
.trail-row.land { padding-top: 8px; border-top: 1px dashed var(--border); }

.flow-arrow { display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--text-dimmer); font-family: "JetBrains Mono", monospace; font-size: 0.68rem; }
.arrow-svg { width: 56px; height: 14px; }

/* sections */
.section { padding: 110px 0; position: relative; }
.section h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-weight: 800; letter-spacing: -0.02em; line-height: 1.2; margin: 0 0 22px; }
.lead { font-size: 1.08rem; color: var(--text-dim); margin: 0 0 20px; }
.problem { border-top: 1px solid var(--border); background: var(--bg-soft); }

.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 22px; }
.stat-num { display: block; font-size: 2.4rem; font-weight: 900; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 8px; }
.stat-label { color: var(--text-dim); font-size: 0.92rem; }

/* products */
.products { border-top: 1px solid var(--border); background: var(--bg); }
.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-top: 50px; }
.product-card {
  position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: 24px;
  padding: 40px 36px; overflow: hidden; transition: border-color 0.25s, transform 0.25s;
}
.product-card:hover { transform: translateY(-4px); }
.card-glow { position: absolute; top: -80px; right: -80px; width: 240px; height: 240px; border-radius: 50%; filter: blur(70px); opacity: 0.35; pointer-events: none; }
.card-plural .card-glow { background: var(--plural); }
.card-verb .card-glow { background: var(--verb); }
.card-plural:hover { border-color: rgba(255,122,26,0.45); }
.card-verb:hover { border-color: rgba(237,71,70,0.45); }
.card-kicker { font-family: "JetBrains Mono", monospace; font-size: 0.72rem; letter-spacing: 0.1em; color: var(--text-dimmer); font-weight: 700; }
.card-top h3 { font-size: 2.1rem; margin: 10px 0 4px; letter-spacing: -0.02em; }
.card-plural h3 { color: var(--plural-soft); }
.card-verb h3 { color: var(--verb-soft); }
.card-tag { color: var(--text-dim); font-weight: 600; margin: 0 0 22px; }
.card-desc { color: var(--text-dim); margin-bottom: 22px; }
.card-list { list-style: none; padding: 0; margin: 0 0 30px; display: flex; flex-direction: column; gap: 12px; }
.card-list li { padding-left: 22px; position: relative; color: var(--text-dim); font-size: 0.94rem; }
.card-list li::before { content: "→"; position: absolute; left: 0; color: var(--text-dimmer); }
.card-cta { position: relative; z-index: 2; }

/* together / loop */
.together { border-top: 1px solid var(--border); background: var(--bg-soft); }
.loop-diagram {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 44px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 20px;
}
.loop-node { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 10px 18px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--border); }
.loop-node span { font-weight: 700; font-size: 0.95rem; }
.loop-node small { color: var(--text-dimmer); font-family: "JetBrains Mono", monospace; font-size: 0.68rem; }
.loop-node-back { opacity: 0.7; }
.loop-arrow { color: var(--text-dimmer); font-size: 1.1rem; }
.loop-arrow-back { color: var(--verb); }

/* flow steps */
.flow { border-top: 1px solid var(--border); background: var(--bg); }
.flow-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; margin-top: 50px; }
.flow-step { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 24px 20px; }
.flow-num { font-family: "JetBrains Mono", monospace; font-weight: 700; font-size: 1.1rem; color: var(--text-dimmer); margin-bottom: 14px; }
.flow-step h4 { margin: 0 0 10px; font-size: 1rem; }
.flow-step p { margin: 0; color: var(--text-dim); font-size: 0.88rem; }

/* future */
.future { border-top: 1px solid var(--border); background: var(--bg-soft); }
.future-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 40px; }
.future-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 26px; }
.future-card h4 { margin: 0 0 10px; font-size: 1.05rem; }
.future-card p { margin: 0; color: var(--text-dim); font-size: 0.94rem; }
.future-close { margin-top: 36px; font-size: 1.15rem; color: var(--text); }
.future-close strong { color: var(--text); }

/* cta */
.cta { border-top: 1px solid var(--border); text-align: center; padding-bottom: 140px; background: var(--bg); }

/* footer */
.footer { border-top: 1px solid var(--border); padding: 36px 0; background: var(--bg-soft); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { color: var(--text-dim); text-decoration: none; font-size: 0.88rem; }
.footer-links a:hover { color: var(--text); }
.footer-copy { color: var(--text-dimmer); font-size: 0.82rem; margin: 0; width: 100%; text-align: center; }

/* reveal animation */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* responsive */
@media (max-width: 980px) {
  .product-grid, .future-grid { grid-template-columns: 1fr; }
  .flow-steps { grid-template-columns: repeat(2, 1fr); }
  .stat-row { grid-template-columns: 1fr; }
  .dual-panel { grid-template-columns: 1fr; }
  .flow-arrow { flex-direction: row; }
  .arrow-svg { transform: rotate(90deg); }
  .nav-links, .nav-cta { display: none; }
  .nav-burger { display: flex; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 6px; }
  .nav-burger span { width: 20px; height: 2px; background: var(--text); }
}
@media (max-width: 640px) {
  .flow-steps { grid-template-columns: 1fr; }
  .wrap { padding: 0 20px; }
  .hero { padding: 90px 0 60px; }
}