:root {
  --paper: #f3f1e9;
  --paper-2: #eae7dc;
  --ink: #1d211a;
  --muted: #666b61;
  --line: rgba(29, 33, 26, .14);
  --green: #95bb16;
  --green-deep: #5d7f00;
  --lime: #dceca1;
  --dark: #20251d;
  --white: #fffef9;
  --radius: 22px;
  --shadow: 0 24px 70px rgba(33, 39, 25, .14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
button, input { font: inherit; }

.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .8rem 1rem; background: var(--dark); color: white; }
.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(243, 241, 233, .88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}
.header-inner { max-width: 1240px; height: 72px; margin: auto; padding: 0 28px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 750; letter-spacing: -.02em; }
.brand img { border-radius: 9px; }
.site-nav { display: flex; align-items: center; gap: 30px; font-size: 14px; }
.site-nav a { text-decoration: none; color: #40453d; }
.site-nav a:hover { color: var(--green-deep); }
.site-nav .nav-download { padding: 10px 17px; border-radius: 100px; background: var(--dark); color: white; }
.menu-button { display: none; border: 0; background: transparent; }

.hero {
  max-width: 1380px;
  min-height: 760px;
  margin: auto;
  padding: 100px 50px 80px;
  display: grid;
  grid-template-columns: minmax(420px, .86fr) minmax(580px, 1.14fr);
  align-items: center;
  gap: 60px;
  overflow: hidden;
}
.eyebrow { margin: 0 0 20px; color: var(--green-deep); text-transform: uppercase; font-size: 12px; font-weight: 800; letter-spacing: .16em; }
.hero h1 { margin: 0; max-width: 590px; font-size: clamp(58px, 6.2vw, 90px); line-height: .98; letter-spacing: -.065em; font-weight: 800; }
.lead { margin: 34px 0; color: #51564e; font-size: 18px; line-height: 1.9; }
.hero-actions { display: flex; align-items: stretch; gap: 12px; flex-wrap: wrap; }
.button { min-height: 58px; padding: 13px 22px; display: inline-flex; flex-direction: column; align-items: flex-start; justify-content: center; border: 1px solid var(--line); border-radius: 14px; text-decoration: none; font-size: 14px; font-weight: 700; transition: transform .18s, box-shadow .18s; }
.button:hover { transform: translateY(-2px); box-shadow: 0 12px 25px rgba(30, 35, 25, .12); }
.button small { margin-top: 2px; opacity: .7; font-size: 10px; font-weight: 500; }
.button.primary { background: var(--dark); color: white; border-color: var(--dark); }
.button.secondary { background: transparent; align-items: center; }
.download-note { margin: 16px 0 0; color: var(--muted); font-size: 11px; }

.hero-visual { position: relative; min-height: 570px; display: grid; place-items: center; }
.hero-visual::before { content: ""; position: absolute; width: 540px; height: 540px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #ecf7bd, #c7df6d 56%, #a3c727); filter: saturate(.85); }
.product-screen-frame { position: relative; z-index: 2; width: min(790px, 100%); aspect-ratio: 1838 / 1228; overflow: hidden; border: 1px solid rgba(22, 28, 17, .18); border-radius: 20px; box-shadow: var(--shadow); transform: rotate(-1.2deg); }
.product-screen { position: absolute; top: -6.44%; left: -6.26%; width: 110.12%; max-width: none; }
.app-window { position: relative; z-index: 2; width: min(720px, 100%); overflow: hidden; border: 1px solid rgba(22, 28, 17, .18); border-radius: 18px; background: rgba(255, 255, 252, .94); box-shadow: var(--shadow); transform: rotate(-1.7deg); }
.window-bar { height: 48px; display: grid; grid-template-columns: 110px 1fr 110px; align-items: center; border-bottom: 1px solid var(--line); font-size: 11px; color: #646a60; text-align: center; }
.traffic-lights { padding-left: 16px; display: flex; gap: 7px; }
.traffic-lights i { width: 11px; height: 11px; border-radius: 50%; background: #ff675e; }
.traffic-lights i:nth-child(2) { background: #ffc04e; }
.traffic-lights i:nth-child(3) { background: #31ca5a; }
.window-body { min-height: 420px; display: grid; grid-template-columns: 154px 1fr; }
.rule-list { padding: 18px 10px; border-right: 1px solid var(--line); background: rgba(235, 235, 228, .8); }
.sidebar-title { padding: 4px 10px 12px; color: #777c73; font-size: 11px; font-weight: 700; }
.rule { padding: 10px; display: flex; flex-direction: column; gap: 3px; border-radius: 8px; font-size: 11px; }
.rule.active { background: #d8ddcf; }
.rule span { color: #777c73; font-size: 9px; }
.add-rule { margin: 15px 8px; font-size: 18px; color: #72776e; }
.rule-editor { padding: 30px 34px; }
.rule-editor h2 { margin: 8px 0 24px; font-size: 26px; letter-spacing: -.04em; }
.status-pill { display: inline-flex; align-items: center; gap: 6px; color: var(--green-deep); font-size: 10px; font-weight: 800; }
.status-pill i, .floating-led i, .led-icon i { width: 8px; height: 8px; border-radius: 50%; background: #95c519; box-shadow: 0 0 0 4px rgba(149, 197, 25, .16), 0 0 14px #b4dc42; }
.form-card { padding: 15px; border: 1px solid var(--line); border-radius: 11px; background: white; }
.form-card label { display: block; margin-bottom: 10px; color: #7c8178; font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.form-card strong { display: block; font-size: 11px; }
.form-card code { display: block; margin-top: 8px; color: #68705f; font-size: 9px; }
.form-grid { margin-top: 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.segment { padding: 3px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px; border-radius: 7px; background: #eceee8; font-size: 9px; text-align: center; }
.segment span { padding: 6px 4px; border-radius: 5px; }
.segment .selected { background: white; box-shadow: 0 1px 4px rgba(0,0,0,.12); font-weight: 700; }
.led-row { margin-top: 18px; padding-top: 16px; display: flex; justify-content: space-between; border-top: 1px solid var(--line); font-size: 10px; }
.led-row b { display: flex; align-items: center; gap: 7px; color: var(--green-deep); }
.led-row i { width: 7px; height: 7px; border-radius: 50%; background: var(--green); }
.floating-key { position: absolute; z-index: 3; bottom: 18px; left: 7px; width: 78px; height: 62px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.55); border-radius: 13px; color: white; background: #292e26; box-shadow: 0 18px 35px rgba(30,35,25,.28); font-size: 12px; font-weight: 700; transform: rotate(8deg); }
.floating-led { position: absolute; z-index: 3; top: 46px; right: 0; padding: 12px 16px; display: flex; align-items: center; gap: 10px; border: 1px solid rgba(255,255,255,.8); border-radius: 100px; background: rgba(255,255,255,.8); box-shadow: 0 15px 30px rgba(40,50,25,.15); font-size: 11px; font-weight: 800; backdrop-filter: blur(8px); }

.compatibility { max-width: 1180px; margin: 10px auto 0; padding: 24px 30px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); color: #686d64; font-size: 12px; }
.section { max-width: 1180px; margin: 0 auto; padding: 140px 30px; }
.section-heading { max-width: 760px; margin-bottom: 60px; }
.section-heading.compact { margin-bottom: 44px; }
.section-heading h2, .security-copy h2, .download-section h2 { margin: 0; font-size: clamp(40px, 5vw, 66px); line-height: 1.12; letter-spacing: -.055em; }
.section-heading > p:last-child { max-width: 600px; margin-top: 24px; color: var(--muted); line-height: 1.9; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature-card { min-height: 300px; padding: 30px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,252,.55); overflow: hidden; }
.feature-card h3 { margin: auto 0 12px; font-size: 22px; letter-spacing: -.035em; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.feature-wide { grid-column: span 2; }
.feature-card.lime { min-height: 330px; flex-direction: row; align-items: flex-start; gap: 28px; background: var(--lime); }
.feature-card.lime > div:nth-child(2) { max-width: 380px; }
.feature-card.lime h3 { margin-top: 0; }
.feature-number { color: var(--green-deep); font-size: 11px; font-weight: 800; }
.feature-icon { width: 48px; height: 48px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 12px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 19px; }
.feature-card.dark { color: white; background: var(--dark); }
.feature-card.dark p { color: #bac0b5; }
.feature-card.dark .feature-icon { border-color: #4a5146; }
.mode-demo { align-self: flex-end; margin: auto 0 0 auto; width: 200px; padding: 5px; display: grid; gap: 4px; border-radius: 10px; background: rgba(255,255,255,.4); font-size: 10px; }
.mode-demo span { padding: 8px; border-radius: 7px; }
.mode-demo .active { background: white; box-shadow: 0 4px 12px rgba(57,72,15,.13); font-weight: 700; }
.led-icon i { width: 12px; height: 12px; }
.keyboard-card { min-height: 300px; display: grid; grid-template-columns: 1fr 1.4fr; align-items: end; gap: 30px; }
.keyboard-card h3 { margin: 50px 0 12px; }
.key-row { display: flex; align-items: flex-end; justify-content: center; gap: 6px; }
kbd { min-width: 72px; padding: 26px 10px 12px; border: 1px solid #bfc3b9; border-bottom-width: 4px; border-radius: 10px; background: #fbfcf7; box-shadow: 0 7px 10px rgba(34,40,29,.08); font: 11px -apple-system, sans-serif; text-align: center; }
kbd:nth-child(2) { min-width: 130px; }

.workflow-section { border-top: 1px solid var(--line); }
.steps { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.steps li { padding: 34px 10px; display: grid; grid-template-columns: 90px 1fr; border-bottom: 1px solid var(--line); }
.step-number { color: var(--green-deep); font-size: 12px; font-weight: 800; }
.steps h3 { margin: 0 0 8px; font-size: 20px; }
.steps p { margin: 0; color: var(--muted); line-height: 1.7; }
.install-note { margin-top: 40px; padding: 26px; display: grid; grid-template-columns: 44px 1fr; gap: 16px; border: 1px solid #d8c98e; border-radius: 16px; background: #f8f0cf; }
.note-icon { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; background: #e2c45e; font-weight: 800; }
.install-note h3 { margin: 0 0 6px; font-size: 15px; }
.install-note p { margin: 0; color: #6e6340; font-size: 13px; line-height: 1.7; }

.security-section { max-width: none; padding-left: max(30px, calc((100vw - 1120px) / 2)); padding-right: max(30px, calc((100vw - 1120px) / 2)); display: grid; grid-template-columns: .85fr 1.15fr; gap: 100px; color: white; background: var(--dark); }
.security-copy p:not(.eyebrow) { margin: 28px 0; color: #b5bbb0; line-height: 1.9; }
.security-copy a { color: #d8ed86; font-size: 13px; text-decoration: none; }
.security-list { border-top: 1px solid #41473e; }
.security-list > div { padding: 25px 4px; display: grid; grid-template-columns: 55px 1fr; border-bottom: 1px solid #41473e; }
.security-list span { color: #8bad18; font-size: 11px; font-weight: 800; }
.security-list p { margin: 0; color: #aeb5a9; font-size: 13px; line-height: 1.6; }
.security-list b { display: block; margin-bottom: 3px; color: white; font-size: 15px; }

.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { padding: 25px 42px 25px 4px; cursor: pointer; font-size: 16px; font-weight: 700; list-style: none; position: relative; }
.faq-list summary::after { content: "+"; position: absolute; right: 8px; font-size: 22px; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 760px; margin: -8px 0 26px; color: var(--muted); line-height: 1.8; }

.download-section { margin: 0 20px 20px; padding: 110px 30px; display: flex; flex-direction: column; align-items: center; text-align: center; border-radius: 30px; background: linear-gradient(145deg, #ddec9f, #bad758); overflow: hidden; }
.download-section img { margin-bottom: 22px; border-radius: 24px; box-shadow: 0 16px 34px rgba(68,92,7,.18); }
.download-section .button { margin-top: 35px; align-items: center; }
.button.large { min-width: 310px; padding: 17px 28px; }
.download-links { margin-top: 18px; display: flex; gap: 20px; font-size: 11px; }

.site-footer { max-width: 1180px; margin: auto; padding: 38px 30px 46px; display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 32px; color: var(--muted); font-size: 11px; }

@media (max-width: 980px) {
  .hero { min-height: auto; padding-top: 75px; grid-template-columns: 1fr; }
  .hero-copy { text-align: center; }
  .hero-copy .eyebrow, .hero h1 { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { min-height: 540px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .feature-wide { grid-column: span 2; }
  .security-section { grid-template-columns: 1fr; gap: 60px; }
  .site-footer { grid-template-columns: 1fr 1fr; }
  .site-footer > p:nth-child(2) { display: none; }
}

@media (max-width: 700px) {
  .header-inner { height: 62px; padding: 0 18px; }
  .menu-button { display: block; cursor: pointer; }
  .site-nav { position: absolute; left: 12px; right: 12px; top: 68px; padding: 18px; display: none; flex-direction: column; align-items: stretch; gap: 8px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); box-shadow: var(--shadow); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 10px; }
  .site-nav .nav-download { text-align: center; }
  .hero { padding: 70px 20px 45px; gap: 35px; }
  .hero h1 { font-size: 54px; }
  .lead { font-size: 15px; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; align-items: center; }
  .hero-visual { min-height: 390px; }
  .hero-visual::before { width: 340px; height: 340px; }
  .app-window { transform: none; }
  .product-screen-frame { transform: none; border-radius: 14px; }
  .window-body { min-height: 300px; grid-template-columns: 90px 1fr; }
  .rule-list { padding: 12px 6px; }
  .rule-editor { padding: 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .floating-key, .floating-led { display: none; }
  .compatibility { overflow-x: auto; justify-content: flex-start; white-space: nowrap; }
  .section { padding: 90px 20px; }
  .section-heading h2, .security-copy h2, .download-section h2 { font-size: 40px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-wide { grid-column: auto; }
  .feature-card.lime { flex-direction: column; }
  .mode-demo { width: 100%; }
  .keyboard-card { grid-template-columns: 1fr; }
  .key-row { overflow: hidden; justify-content: flex-start; }
  kbd { min-width: 62px; }
  .steps li { grid-template-columns: 45px 1fr; }
  .security-section { padding-left: 20px; padding-right: 20px; }
  .download-section { margin: 0 10px 10px; padding: 80px 20px; }
  .site-footer { padding: 30px 20px; grid-template-columns: 1fr; text-align: center; }
  .site-footer .brand { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}