/* ===== design tokens ===== */
:root {
  --bg-paper: #F2EFE4;
  --bg-alt: #E9E5D6;
  --card-light: #F7F4EA;
  --card-light-2: #FBFAF4;
  --text-primary: #17251C;
  --text-secondary: #33443A;
  --text-muted: #7A8A80;
  --green: #1F6B3B;
  --green-dark: #0E4A26;
  --panel-dark: #0D1712;
  --panel-dark-2: #101E16;
  --dark-section: #17251C;
  --green-on-dark: #4FA36B;
  --green-light: #7BC494;
  --text-on-dark: #E8E4D6;
  --text-on-dark-2: #DCE6DD;
  --muted-on-dark: #9DB8A6;
  --muted-on-dark-2: #6E8A78;
  --muted-on-dark-3: #5E7367;
  --stem-green: #3E5C49;
  --water-blue: #60A5FA;
  --amber-bg: rgba(224,164,88,.12);
  --amber-text: #9C6A1F;
  --amber-body: #5C4A2A;
  --border-light: rgba(23,37,28,.15);
  --border-light-2: rgba(23,37,28,.12);
  --border-dark: rgba(79,163,107,.3);
  --border-dark-2: rgba(79,163,107,.25);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg-paper); }
body {
  font-family: 'Space Grotesk', sans-serif;
  color: var(--text-primary);
  min-width: 0;
}
a { color: var(--green); text-decoration-color: rgba(31,107,59,.4); }
a:hover { color: var(--green-dark); }
::selection { background: var(--green); color: var(--bg-paper); }
h1, h2, p { margin: 0; }

@keyframes tickscroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes drip { 0%, 100% { opacity: 0; transform: translateY(0); } 20% { opacity: .9; } 80% { opacity: 0; transform: translateY(14px); } }
@keyframes pulse { 0%, 100% { opacity: .35; } 50% { opacity: .9; } }

.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 18px;
}
.eyebrow-dark { color: var(--green-on-dark); }

/* ===== nav ===== */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 48px;
  border-bottom: 1px solid var(--border-light);
  flex-wrap: wrap;
  gap: 12px;
}
.wordmark { display: flex; align-items: baseline; gap: 10px; }
.wordmark-serif { font-family: 'Instrument Serif', serif; font-size: 24px; }
.wordmark-pill {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 15px;
  color: var(--green);
  background: rgba(31,107,59,.1);
  padding: 2px 8px;
  border-radius: 99px;
}
.nav-links { display: flex; gap: 28px; font-size: 14px; font-weight: 500; }
.nav-links a { text-decoration: none; color: var(--text-primary); }
.nav-links a.accent { color: var(--green); }

/* ===== hero ===== */
.hero { padding: 88px 48px 64px; max-width: 1180px; margin: 0 auto; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero h1 {
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  font-size: 72px;
  line-height: 1.02;
  margin: 0 0 24px;
  text-wrap: balance;
}
.hero h1 em { color: var(--green); font-style: italic; }
.lead { font-size: 19px; line-height: 1.6; max-width: 520px; margin: 0 0 36px; color: var(--text-secondary); }
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-block; text-decoration: none; padding: 15px 28px; border-radius: 99px; font-weight: 500; font-size: 15px; cursor: pointer; border: none; }
.btn-solid { background: var(--text-primary); color: var(--bg-paper); }
.btn-solid:hover { background: var(--green); color: var(--bg-paper); }
.btn-outline { border: 1.5px solid var(--text-primary); color: var(--text-primary); background: transparent; }
.btn-outline:hover { border-color: var(--green); color: var(--green); }

.hero-photo-wrap { position: relative; }
.hero-photo-frame { position: relative; width: 100%; height: 420px; transform: rotate(1.5deg); }
.status-badge {
  position: absolute; bottom: -18px; left: -14px;
  background: var(--bg-paper);
  border: 1px solid rgba(23,37,28,.2);
  border-radius: 12px;
  padding: 12px 18px;
  transform: rotate(-2deg);
  box-shadow: 0 12px 30px rgba(23,37,28,.12);
}
.status-badge-k { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--text-muted); }
.status-badge-v { font-family: 'IBM Plex Mono', monospace; font-size: 14px; color: var(--green); font-weight: 500; }

.img-placeholder {
  width: 100%; height: 100%;
  border-radius: 18px;
  border: 1.5px dashed rgba(23,37,28,.3);
  background: rgba(23,37,28,.04);
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  color: var(--text-muted);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  padding: 16px;
}
.img-placeholder::before { content: attr(data-caption); max-width: 80%; }

/* ===== ticker ===== */
.ticker { background: var(--dark-section); overflow: hidden; padding: 14px 0; border-top: 1px solid var(--dark-section); }
.ticker-track {
  display: flex; width: max-content;
  animation: tickscroll 28s linear infinite;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px; color: var(--muted-on-dark);
}
.ticker-item { display: flex; align-items: center; gap: 10px; padding: 0 28px; white-space: nowrap; }
.ticker-item .k { color: var(--green-on-dark); }
.ticker-item .v { color: var(--text-on-dark); }

/* ===== live scene ===== */
.live-scene { background: var(--panel-dark); padding: 88px 48px; color: #DCE6DD; }
.live-grid { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: .9fr 1.1fr; gap: 64px; align-items: center; }
.live-scene h2 { font-family: 'Instrument Serif', serif; font-weight: 400; font-size: 46px; line-height: 1.08; margin: 0 0 20px; }
.body-dark { font-size: 16px; line-height: 1.65; color: var(--muted-on-dark); margin: 0 0 32px; }
.metrics-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.metric-tile { border: 1px solid var(--border-dark); border-radius: 12px; padding: 16px; }
.metric-k { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted-on-dark-2); }
.metric-v { font-family: 'IBM Plex Mono', monospace; font-size: 26px; color: var(--text-on-dark); margin-top: 4px; }
.metric-v-accent { color: var(--green-on-dark); }
.sim-note { margin-top: 14px; font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted-on-dark-3); }
.scene-panel { background: var(--panel-dark-2); border: 1px solid var(--border-dark-2); border-radius: 18px; padding: 28px; }
.scene-svg { width: 100%; display: block; }
.mqtt-dot { animation: pulse 2s ease-in-out infinite; }
.drip { animation: drip 2.4s ease-in-out infinite; }

/* ===== AI analysis ===== */
.ai-analysis { padding: 96px 48px; max-width: 1180px; margin: 0 auto; }
.ai-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.ai-analysis h2 { font-family: 'Instrument Serif', serif; font-weight: 400; font-size: 46px; line-height: 1.08; margin: 0 0 20px; }
.body-light { font-size: 16px; line-height: 1.65; color: var(--text-secondary); margin: 0; }
.ai-card {
  background: var(--card-light-2);
  border: 1px solid var(--border-light-2);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 16px 40px rgba(23,37,28,.08);
  transform: rotate(-.6deg);
}
.ai-card-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.ai-card-tag { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--text-muted); }
.ai-card-pill { font-family: 'IBM Plex Mono', monospace; font-size: 12px; background: var(--amber-bg); color: var(--amber-text); padding: 2px 10px; border-radius: 99px; }
.ai-quote { font-family: 'Instrument Serif', serif; font-size: 21px; line-height: 1.5; margin: 0; color: var(--text-primary); }
.ai-card-foot { margin-top: 18px; font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--text-muted); }

/* ===== how it works ===== */
.how-it-works { background: var(--bg-alt); padding: 96px 48px; }
.section-inner { max-width: 1180px; margin: 0 auto; }
.how-title { font-family: 'Instrument Serif', serif; font-weight: 400; font-size: 46px; line-height: 1.08; margin: 0 0 16px; max-width: 640px; }
.how-lead { font-size: 16px; line-height: 1.6; color: var(--text-secondary); max-width: 600px; margin: 0 0 48px; }
.node-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.node-card { background: var(--card-light); border: 1px solid var(--border-light-2); border-radius: 16px; padding: 28px; display: flex; flex-direction: column; gap: 14px; }
.node-card-top { display: flex; justify-content: space-between; align-items: baseline; }
.node-tag { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--text-muted); }
.node-num { font-family: 'Instrument Serif', serif; font-size: 30px; color: rgba(23,37,28,.25); }
.node-title { font-size: 20px; font-weight: 600; }
.node-body { font-size: 14.5px; line-height: 1.6; color: var(--text-secondary); margin: 0; }
.node-safety { margin-top: auto; border-top: 1px dashed rgba(23,37,28,.2); padding-top: 12px; font-family: 'IBM Plex Mono', monospace; font-size: 12.5px; color: var(--green); }
.honest-footnote {
  margin-top: 20px;
  border: 1.5px dashed rgba(156,106,31,.5);
  border-radius: 16px;
  padding: 22px 28px;
  display: flex; gap: 18px; align-items: baseline;
  background: var(--amber-bg);
  flex-wrap: wrap;
}
.honest-footnote-tag { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--amber-text); white-space: nowrap; }
.honest-footnote p { font-size: 14.5px; line-height: 1.6; color: var(--amber-body); }

/* ===== build log ===== */
.build-log { padding: 96px 48px; max-width: 900px; margin: 0 auto; }
.build-log-title { font-family: 'Instrument Serif', serif; font-weight: 400; font-size: 46px; line-height: 1.08; margin: 0 0 48px; }
.phase-list { display: flex; flex-direction: column; }
.phase-row { display: grid; grid-template-columns: 150px 1fr; gap: 32px; padding: 32px 0; border-top: 1px solid var(--border-light); }
.phase-tag { font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--green); }
.phase-status { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--text-muted); margin-top: 6px; }
.phase-title { font-size: 21px; font-weight: 600; margin-bottom: 10px; }
.phase-body { font-size: 15.5px; line-height: 1.65; color: var(--text-secondary); margin: 0; }
.log-photos { margin-top: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.log-photos .img-placeholder { height: 260px; border-radius: 14px; }

/* ===== future / cta ===== */
.future { background: var(--dark-section); color: var(--text-on-dark); padding: 96px 48px; }
.future-intro { max-width: 680px; margin: 0 auto 56px; }
.future > * { max-width: 1180px; margin-left: auto; margin-right: auto; }
.future-intro h2 { font-family: 'Instrument Serif', serif; font-weight: 400; font-size: 52px; line-height: 1.06; margin: 0 0 20px; }
.concept-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 56px; }
.concept-card { border: 1px solid var(--border-dark); border-radius: 18px; padding: 36px; display: flex; flex-direction: column; gap: 14px; }
.concept-tag { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--green-on-dark); }
.concept-title { font-family: 'Instrument Serif', serif; font-size: 32px; }
.concept-body { font-size: 15px; line-height: 1.65; color: var(--muted-on-dark); margin: 0; }
.btn-dark-solid { margin-top: auto; display: inline-block; background: var(--green-on-dark); color: var(--panel-dark); text-decoration: none; padding: 13px 24px; border-radius: 99px; font-weight: 600; font-size: 14.5px; width: max-content; }
.btn-dark-solid:hover { background: var(--green-light); color: var(--panel-dark); }
.btn-dark-outline { margin-top: auto; display: inline-block; border: 1.5px solid var(--green-on-dark); color: var(--green-light); text-decoration: none; padding: 13px 24px; border-radius: 99px; font-weight: 600; font-size: 14.5px; width: max-content; }
.btn-dark-outline:hover { border-color: var(--green-light); color: var(--text-on-dark-2); }

.signup-panel { border: 1px solid var(--border-dark); border-radius: 18px; padding: 40px; background: var(--panel-dark-2); margin-bottom: 48px; }
.signup-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: center; }
.signup-tag { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--green-on-dark); margin-bottom: 12px; }
.signup-title { font-family: 'Instrument Serif', serif; font-size: 34px; line-height: 1.1; margin-bottom: 12px; }
.interest-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.interest-chip {
  border-radius: 99px; padding: 9px 18px;
  font-family: 'IBM Plex Mono', monospace; font-size: 12.5px;
  cursor: pointer;
  background: transparent; color: var(--muted-on-dark);
  border: 1.5px solid rgba(79,163,107,.35);
}
.interest-chip.active { background: var(--green-on-dark); color: var(--panel-dark); border-color: var(--green-on-dark); font-weight: 600; }
.email-row { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.email-row input {
  flex: 1; min-width: 200px;
  background: var(--panel-dark);
  border: 1.5px solid rgba(79,163,107,.35);
  border-radius: 99px;
  padding: 14px 22px;
  color: var(--text-on-dark);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px;
  outline: none;
}
.email-row input:focus { border-color: var(--green-on-dark); }
.btn-green-solid { background: var(--green-on-dark); color: var(--panel-dark); border: none; border-radius: 99px; padding: 14px 28px; font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 15px; }
.btn-green-solid:hover { background: var(--green-light); }
.form-note { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--muted-on-dark-3); }
.signup-confirm { border: 1.5px dashed rgba(79,163,107,.5); border-radius: 16px; padding: 28px; text-align: center; }
.signup-confirm-title { font-family: 'Instrument Serif', serif; font-size: 26px; color: var(--green-light); margin-bottom: 8px; }
.signup-confirm-line { font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--muted-on-dark); }

.footer-row {
  margin-top: 48px; padding-top: 28px;
  border-top: 1px solid rgba(79,163,107,.2);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px;
  font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--muted-on-dark-3);
}
.footer-row a { color: var(--green-on-dark); text-decoration: none; }

/* ===== responsive baseline ===== */
@media (max-width: 900px) {
  .nav { padding: 18px 24px; }
  .nav-links { gap: 16px; font-size: 13px; }
  .hero { padding: 56px 24px 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 44px; }
  .lead { font-size: 17px; max-width: none; }
  .hero-photo-frame { height: 260px; }
  .live-scene, .ai-analysis, .how-it-works, .build-log, .future { padding: 56px 24px; }
  .live-grid, .ai-grid { grid-template-columns: 1fr; gap: 40px; }
  .live-scene h2, .ai-analysis h2, .how-title, .build-log-title { font-size: 32px; }
  .future-intro h2 { font-size: 36px; }
  .metrics-row { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .node-grid { grid-template-columns: 1fr; }
  .concept-grid { grid-template-columns: 1fr; }
  .signup-grid { grid-template-columns: 1fr; gap: 24px; }
  .phase-row { grid-template-columns: 1fr; gap: 10px; }
  .log-photos { grid-template-columns: 1fr; }
}