:root {
  --ink: #ecf7f1;
  --muted: #a9bbb2;
  --muted-dark: #789187;
  --background: #07120e;
  --surface: rgba(17, 39, 30, 0.7);
  --surface-strong: #10271e;
  --line: rgba(207, 246, 226, 0.14);
  --green: #35e892;
  --green-deep: #0d6d48;
  --red: #ff3d32;
  --red-deep: #b9221c;
  --max-width: 1160px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 2%, rgba(28, 165, 102, 0.2), transparent 31rem),
    radial-gradient(circle at 14% 26%, rgba(255, 61, 50, 0.1), transparent 25rem),
    var(--background);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 20;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  border-radius: 10px;
  background: #fff;
  color: #07120e;
  transform: translateY(-150%);
}

.skip-link:focus { transform: translateY(0); }

.site-header,
main,
.site-footer {
  width: min(calc(100% - 48px), var(--max-width));
  margin-inline: auto;
}

.site-header {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 20px;
  font-weight: 790;
  letter-spacing: -0.035em;
  text-decoration: none;
}

.brand-mark {
  width: 33px;
  height: 33px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(145deg, #ff4d43, #d62820);
  color: white;
  font-family: Arial, sans-serif;
  font-size: 30px;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 8px 22px rgba(255, 61, 50, 0.28);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 23px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

.header-nav a { text-decoration: none; }
.header-nav a:hover { color: #fff; }

.header-nav .nav-console {
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #effbf5;
  background: rgba(255, 255, 255, 0.04);
}

.hero {
  min-height: 650px;
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(420px, 1.04fr);
  align-items: center;
  gap: 30px;
  padding: 64px 0 72px;
}

.hero-copy { position: relative; z-index: 1; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  color: #bce7ce;
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.12em;
}

.eyebrow span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 5px rgba(53, 232, 146, 0.1);
}

h1,
h2,
h3,
p { margin-top: 0; }

h1 {
  max-width: 610px;
  margin-bottom: 22px;
  color: #fff;
  font-size: clamp(44px, 5.6vw, 76px);
  font-weight: 780;
  line-height: 1.03;
  letter-spacing: -0.068em;
}

h1 em { color: var(--green); font-style: normal; }

.hero-lead {
  max-width: 570px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 760;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(0); }

.button-primary {
  background: var(--green);
  color: #072014;
  box-shadow: 0 15px 38px rgba(53, 232, 146, 0.2);
}

.button-secondary {
  border-color: var(--line);
  color: #e5f4ec;
  background: rgba(255, 255, 255, 0.035);
}

.version-note {
  margin: 14px 0 0;
  color: var(--muted-dark);
  font-size: 13px;
}

.hero-boundary {
  max-width: 570px;
  margin: 24px 0 0;
  padding-left: 14px;
  border-left: 2px solid rgba(53, 232, 146, 0.6);
  color: #93ab9f;
  font-size: 13px;
  line-height: 1.7;
}

.hero-art {
  position: relative;
  min-height: 432px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-art img {
  position: relative;
  z-index: 1;
  width: min(100%, 620px);
  display: block;
  border: 1px solid rgba(213, 255, 233, 0.12);
  border-radius: 28px;
  box-shadow: 0 34px 100px rgba(0, 0, 0, 0.45);
}

.hero-glow {
  position: absolute;
  border-radius: 999px;
  filter: blur(10px);
}

.hero-glow-one {
  width: 200px;
  height: 200px;
  top: 8%;
  right: 3%;
  background: rgba(53, 232, 146, 0.13);
}

.hero-glow-two {
  width: 130px;
  height: 130px;
  bottom: 5%;
  left: 4%;
  background: rgba(255, 61, 50, 0.11);
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0 0 112px;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.025);
}

.trust-strip div {
  min-height: 92px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 18px 24px;
}

.trust-strip div + div { border-left: 1px solid var(--line); }
.trust-strip strong { color: #fff; font-size: 14px; }
.trust-strip span { color: var(--muted-dark); font-size: 12px; }

.section { padding: 0 0 124px; }

.section-heading { max-width: 700px; margin-bottom: 38px; }
.compact-heading { margin-bottom: 32px; }

.section-heading h2,
.download-panel h2 {
  margin-bottom: 14px;
  color: #fff;
  font-size: clamp(31px, 4vw, 50px);
  font-weight: 760;
  line-height: 1.11;
  letter-spacing: -0.053em;
}

.section-heading > p:last-child { color: var(--muted); font-size: 16px; line-height: 1.75; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.feature-card {
  min-height: 252px;
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(155deg, rgba(21, 50, 39, 0.78), rgba(8, 24, 18, 0.75));
}

.feature-icon {
  width: 42px;
  height: 30px;
  display: grid;
  place-items: center;
  margin-bottom: 46px;
  border-radius: 8px;
  background: rgba(53, 232, 146, 0.11);
  color: var(--green);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.09em;
}

.feature-card h3 { margin-bottom: 9px; color: #fff; font-size: 18px; letter-spacing: -0.02em; }
.feature-card p { margin-bottom: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }

.start-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(400px, 1.2fr);
  gap: 64px;
  align-items: start;
}

.steps { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }

.steps li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
  padding: 0 0 29px;
}

.steps li:not(:last-child) { border-bottom: 1px solid var(--line); margin-bottom: 28px; }

.steps > li > span {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(53, 232, 146, 0.35);
  color: var(--green);
  font-size: 14px;
  font-weight: 800;
}

.steps h3 { margin-bottom: 6px; color: #fff; font-size: 18px; }
.steps p { margin-bottom: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }

.scenarios { display: grid; grid-template-columns: minmax(0, 0.86fr) minmax(420px, 1.14fr); gap: 68px; }

.scenario-list { display: grid; align-content: start; gap: 12px; }
.scenario-list p {
  margin: 0;
  padding: 21px 22px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.025);
  color: #c8d9d0;
  font-size: 15px;
}

.scenario-list span { display: inline-block; min-width: 102px; color: var(--green); font-weight: 750; }

.faq-section { display: grid; grid-template-columns: minmax(0, 0.82fr) minmax(440px, 1.18fr); gap: 68px; }

.faq-list { border-top: 1px solid var(--line); }

.faq-list details { border-bottom: 1px solid var(--line); }

.faq-list summary {
  position: relative;
  padding: 21px 38px 21px 0;
  color: #f4fbf7;
  cursor: pointer;
  font-size: 16px;
  font-weight: 690;
  list-style: none;
}

.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { position: absolute; right: 3px; top: 18px; color: var(--green); content: "+"; font-size: 22px; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { max-width: 650px; margin: -2px 0 22px; color: var(--muted); font-size: 14px; line-height: 1.75; }

.safety-note {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  margin: 0 0 100px;
  padding: 25px;
  border: 1px solid rgba(255, 198, 88, 0.22);
  border-radius: 20px;
  background: linear-gradient(115deg, rgba(106, 75, 24, 0.24), rgba(24, 46, 34, 0.6));
}

.safety-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #f3ba55;
  color: #2c1e06;
  font-weight: 900;
}

.safety-note h2 { margin: 0 0 6px; color: #fff3d8; font-size: 17px; }
.safety-note p { max-width: 900px; margin: 0; color: #d5c9ae; font-size: 13px; line-height: 1.75; }

.download-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  margin-bottom: 84px;
  padding: clamp(31px, 5vw, 57px);
  border-radius: 26px;
  background:
    radial-gradient(circle at 85% 10%, rgba(255, 255, 255, 0.17), transparent 14rem),
    linear-gradient(125deg, #24d882, #0b7a4b);
  color: #072014;
}

.download-panel .eyebrow { color: #075436; }
.download-panel .eyebrow span { background: #e63a30; box-shadow: 0 0 0 5px rgba(230, 58, 48, 0.14); }
.download-panel h2 { max-width: 650px; margin-bottom: 8px; color: #062315; }
.download-panel p:last-child { margin: 0; color: #155c3e; font-size: 14px; font-weight: 640; }

.button-light { flex: none; background: #09271a; color: #eafff2; box-shadow: 0 17px 36px rgba(1, 31, 17, 0.22); }

.site-footer {
  display: grid;
  grid-template-columns: minmax(150px, 0.5fr) minmax(0, 1.5fr) auto;
  align-items: center;
  gap: 28px;
  padding: 0 0 42px;
  color: var(--muted-dark);
}

.footer-brand { font-size: 17px; }
.footer-brand .brand-mark { width: 27px; height: 27px; border-radius: 8px; font-size: 24px; }
.site-footer p { max-width: 570px; margin: 0; font-size: 11px; line-height: 1.7; }
.site-footer > a:last-child { color: #b9d9c9; font-size: 13px; font-weight: 700; text-decoration: none; white-space: nowrap; }

a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(53, 232, 146, 0.6);
  outline-offset: 4px;
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 36px; padding-top: 45px; }
  .hero-art { min-height: 0; max-width: 650px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .start-section,
  .scenarios,
  .faq-section { grid-template-columns: 1fr; gap: 18px; }
  .site-footer { grid-template-columns: 1fr; gap: 16px; }
}

@media (max-width: 640px) {
  .site-header,
  main,
  .site-footer { width: min(calc(100% - 32px), var(--max-width)); }
  .site-header { min-height: 70px; }
  .header-nav { gap: 15px; font-size: 12px; }
  .header-nav > a:not(.nav-console) { display: none; }
  .hero { min-height: 0; padding: 49px 0 58px; }
  h1 { font-size: clamp(43px, 13vw, 62px); }
  .hero-lead { font-size: 16px; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .hero-art img { border-radius: 19px; }
  .trust-strip { grid-template-columns: 1fr; margin-bottom: 78px; }
  .trust-strip div { min-height: auto; padding: 15px 17px; }
  .trust-strip div + div { border-top: 1px solid var(--line); border-left: 0; }
  .section { padding-bottom: 82px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; }
  .feature-icon { margin-bottom: 32px; }
  .scenario-list p { padding: 16px; font-size: 14px; }
  .scenario-list span { display: block; margin-bottom: 4px; }
  .safety-note { grid-template-columns: 1fr; gap: 11px; margin-bottom: 72px; padding: 20px; }
  .download-panel { display: grid; margin-bottom: 62px; padding: 29px 23px; }
  .download-panel h2 { font-size: 30px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}