:root {
  --ink: #14201c;
  --ink-soft: #3d4f47;
  --paper: #f3f6f2;
  --mist: #dce8e1;
  --scan: #1f8a6a;
  --scan-deep: #0f5c48;
  --accent: #c45c26;
  --white: #ffffff;
  --line: rgba(20, 32, 28, 0.12);
  --shadow: 0 24px 60px rgba(15, 40, 32, 0.18);
  --font-display: "Syne", sans-serif;
  --font-body: "Sora", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem clamp(1.25rem, 4vw, 3rem);
  background: linear-gradient(
    to bottom,
    rgba(243, 246, 242, 0.92),
    rgba(243, 246, 242, 0)
  );
  backdrop-filter: blur(8px);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 22%;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(15, 40, 32, 0.12);
}

.header-cta {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--scan-deep);
  border-bottom: 1.5px solid transparent;
  transition: border-color 0.25s var(--ease);
}

.header-cta:hover {
  border-color: var(--scan-deep);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  overflow: hidden;
  padding:
    calc(5.5rem + env(safe-area-inset-top))
    clamp(1.25rem, 4vw, 3rem)
    clamp(2rem, 5vw, 3.5rem);
}

.hero-atmosphere {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 55% at 70% 35%, #b8d4c8 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 15% 80%, #e8d5c4 0%, transparent 50%),
    linear-gradient(165deg, #e8f0eb 0%, #f3f6f2 45%, #d5e4dc 100%);
}

.hero-grain {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px;
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  width: min(70vw, 520px);
  height: min(70vw, 520px);
  right: -8%;
  top: 8%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 138, 106, 0.22), transparent 70%);
  animation: pulse-glow 8s ease-in-out infinite;
}

.scan-beam {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  top: 42%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(31, 138, 106, 0.55),
    transparent
  );
  opacity: 0.5;
  animation: beam-sweep 7s var(--ease) infinite;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 34rem;
  animation: rise-in 0.9s var(--ease) both;
}

.brand-logo {
  display: block;
  width: clamp(5.5rem, 14vw, 7rem);
  height: auto;
  margin: 0 0 1rem;
  border-radius: 22%;
  box-shadow: 0 16px 40px rgba(15, 40, 32, 0.16);
}

.brand {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.6rem, 8vw, 4.5rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--ink);
}

.hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--ink-soft);
  max-width: 22ch;
}

.lede {
  margin: 0 0 1.75rem;
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 36ch;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 3rem;
  padding: 0.75rem 1.35rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  border: 1.5px solid transparent;
  transition:
    transform 0.25s var(--ease),
    background 0.25s var(--ease),
    border-color 0.25s var(--ease),
    color 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--scan-deep);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--scan);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--ink);
}

.play-icon {
  flex-shrink: 0;
}

/* Hero visual — full-bleed plane */
.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: clamp(0rem, 6vw, 4rem);
  padding-top: 4rem;
}

.desk {
  position: relative;
  width: min(58vw, 560px);
  aspect-ratio: 1;
  animation: float-in 1.1s var(--ease) 0.15s both;
}

.paper {
  position: absolute;
  background: var(--white);
  box-shadow: var(--shadow);
}

.paper-back {
  width: 62%;
  height: 72%;
  right: 8%;
  top: 10%;
  transform: rotate(8deg);
  background: #fafcf9;
  opacity: 0.85;
}

.paper-main {
  width: 68%;
  height: 78%;
  right: 14%;
  top: 14%;
  transform: rotate(-3deg);
  overflow: hidden;
  border: 1px solid rgba(20, 32, 28, 0.06);
}

.paper-lines {
  position: absolute;
  inset: 18% 14% 22%;
  display: flex;
  flex-direction: column;
  gap: 12%;
}

.paper-lines span {
  display: block;
  height: 3px;
  background: rgba(20, 32, 28, 0.1);
  border-radius: 2px;
}

.paper-lines span:nth-child(1) {
  width: 88%;
}
.paper-lines span:nth-child(2) {
  width: 72%;
}
.paper-lines span:nth-child(3) {
  width: 94%;
}
.paper-lines span:nth-child(4) {
  width: 60%;
}
.paper-lines span:nth-child(5) {
  width: 80%;
}

.edge-frame {
  position: absolute;
  inset: 10%;
  border: 1.5px solid rgba(31, 138, 106, 0.45);
}

.edge-frame i {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2.5px solid var(--scan);
}

.edge-frame i:nth-child(1) {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}
.edge-frame i:nth-child(2) {
  top: -2px;
  right: -2px;
  border-left: 0;
  border-bottom: 0;
}
.edge-frame i:nth-child(3) {
  bottom: -2px;
  left: -2px;
  border-right: 0;
  border-top: 0;
}
.edge-frame i:nth-child(4) {
  bottom: -2px;
  right: -2px;
  border-left: 0;
  border-top: 0;
}

.scan-line {
  position: absolute;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--scan),
    transparent
  );
  box-shadow: 0 0 18px rgba(31, 138, 106, 0.45);
  animation: scan-move 3.2s var(--ease) infinite;
}

.phone {
  position: absolute;
  width: 34%;
  aspect-ratio: 9 / 18.5;
  right: 0;
  bottom: 6%;
  background: var(--ink);
  border-radius: 18px;
  padding: 7px;
  box-shadow: var(--shadow);
  transform: rotate(12deg);
}

.phone-screen {
  height: 100%;
  border-radius: 12px;
  background: linear-gradient(160deg, #1a2e28, #0f1c18);
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 12%;
  gap: 10%;
}

.phone-doc {
  flex: 1;
  background: #eef4f0;
  border-radius: 4px;
  position: relative;
}

.phone-doc::after {
  content: "";
  position: absolute;
  inset: 18% 14%;
  background:
    linear-gradient(#c5d4cc, #c5d4cc) 0 0 / 100% 8% no-repeat,
    linear-gradient(#c5d4cc, #c5d4cc) 0 28% / 70% 6% no-repeat,
    linear-gradient(#c5d4cc, #c5d4cc) 0 48% / 85% 6% no-repeat,
    linear-gradient(#c5d4cc, #c5d4cc) 0 68% / 55% 6% no-repeat;
}

.phone-ui {
  display: flex;
  gap: 6%;
  height: 10%;
}

.phone-ui span {
  flex: 1;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.18);
}

.phone-ui span:first-child {
  background: var(--scan);
}

/* Sections */
.section {
  padding: clamp(4.5rem, 10vw, 7rem) clamp(1.25rem, 4vw, 3rem);
}

.section-inner {
  max-width: 68rem;
  margin: 0 auto;
}

.section h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  max-width: 22ch;
}

.section-lede {
  margin: 0 0 2.75rem;
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 48ch;
}

.prose {
  max-width: 62ch;
  color: var(--ink-soft);
  font-size: 1rem;
}

.prose p {
  margin: 0 0 1.1rem;
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose strong {
  color: var(--ink);
  font-weight: 600;
}

.prose a {
  color: var(--scan-deep);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.prose-on-dark {
  margin-top: 2.5rem;
  color: rgba(243, 246, 242, 0.72);
  max-width: 52ch;
}

.prose-on-dark p {
  margin: 0;
}

.about {
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.about .section-lede {
  margin-bottom: 1.5rem;
}

.features {
  background:
    linear-gradient(180deg, #e4ede8 0%, var(--paper) 100%);
  border-top: 1px solid var(--line);
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}

.feature-list li {
  padding: 1.75rem 1.5rem 1.75rem 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 720px) {
  .feature-list li {
    padding-right: 2rem;
    border-right: 1px solid var(--line);
  }

  .feature-list li:nth-child(3n) {
    border-right: none;
  }
}

.feature-list h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.feature-list p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.flow {
  background: var(--ink);
  color: var(--paper);
}

.flow .section-lede {
  color: rgba(243, 246, 242, 0.72);
}

.flow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: 2.5rem 2rem;
}

.step-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: #6ec4a4;
  margin-bottom: 0.75rem;
}

.flow-steps h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
}

.flow-steps p {
  margin: 0;
  color: rgba(243, 246, 242, 0.7);
  font-size: 0.95rem;
  max-width: 28ch;
}

.privacy {
  background:
    radial-gradient(ellipse 60% 80% at 100% 50%, #d4e5db 0%, transparent 55%),
    var(--paper);
}

.privacy-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
}

.privacy .section-lede {
  margin-bottom: 0;
}

.privacy-extra {
  margin-top: 2.25rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.use-cases {
  background: #eaf1ec;
  border-top: 1px solid var(--line);
}

.use-list,
.why-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.use-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 2rem 2.5rem;
}

.use-list h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.use-list p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
  max-width: 36ch;
}

.why {
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.why-list {
  display: grid;
  gap: 1.15rem;
  max-width: 58ch;
}

.why-list li {
  color: var(--ink-soft);
  font-size: 1rem;
  padding-left: 1.1rem;
  border-left: 2px solid var(--scan);
}

.why-list strong {
  color: var(--ink);
  font-weight: 600;
}

.why-list a {
  color: var(--scan-deep);
  font-weight: 600;
}

.languages {
  border-top: 1px solid var(--line);
  padding-block: clamp(3rem, 6vw, 4.5rem);
  background: #e8efe9;
}

.languages .section-lede {
  margin-bottom: 1.75rem;
}

.lang-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 0.75rem;
}

.lang-list li {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--line);
  min-width: 8.5rem;
}

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

.faq-list {
  max-width: 52rem;
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
  padding: 1.15rem 0;
}

.faq-list summary {
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--ink);
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1.35rem;
  color: var(--scan-deep);
  line-height: 1;
  flex-shrink: 0;
}

.faq-list details[open] summary::after {
  content: "–";
}

.faq-list details p {
  margin: 0.85rem 0 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
  max-width: 58ch;
  line-height: 1.6;
}

.faq-list details a {
  color: var(--scan-deep);
  font-weight: 600;
}

.cta-final {
  background:
    radial-gradient(ellipse 70% 80% at 0% 50%, #d4e5db 0%, transparent 55%),
    linear-gradient(180deg, #e4ede8, #f3f6f2);
  border-top: 1px solid var(--line);
}

.cta-final-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

.cta-final .section-lede {
  margin-bottom: 1.75rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.5rem clamp(1.25rem, 4vw, 3rem) 3rem;
  background: #e8efe9;
}

.footer-inner {
  max-width: 68rem;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem 2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.footer-logo {
  width: 3rem;
  height: 3rem;
  border-radius: 22%;
  object-fit: cover;
  box-shadow: 0 4px 14px rgba(15, 40, 32, 0.12);
  flex-shrink: 0;
}

.footer-name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.footer-by {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.footer-meta {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.footer-meta p {
  margin: 0 0 0.35rem;
}

.footer-meta > a {
  color: var(--scan-deep);
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.footer-meta > a:hover {
  border-color: var(--scan-deep);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.1rem;
  margin-top: 0.85rem;
}

.footer-nav a {
  color: var(--ink-soft);
  font-weight: 500;
  font-size: 0.85rem;
}

.footer-nav a:hover {
  color: var(--scan-deep);
}

.footer-play {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--scan-deep);
  align-self: center;
}

.footer-play:hover {
  text-decoration: underline;
}

/* Motion */
@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float-in {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes scan-move {
  0%,
  100% {
    top: 16%;
    opacity: 0.3;
  }
  50% {
    top: 78%;
    opacity: 1;
  }
}

@keyframes beam-sweep {
  0%,
  100% {
    transform: translateY(-40px);
    opacity: 0.2;
  }
  50% {
    transform: translateY(80px);
    opacity: 0.55;
  }
}

@keyframes pulse-glow {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.08);
    opacity: 1;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.7s var(--ease),
    transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 860px) {
  .hero {
    align-items: flex-start;
    padding-bottom: 42vh;
  }

  .hero-visual {
    align-items: flex-end;
    justify-content: center;
    padding: 0 1rem 1.5rem;
    top: auto;
    height: 42%;
  }

  .desk {
    width: min(88vw, 380px);
  }

  .hero-copy {
    max-width: 100%;
  }

  .brand {
    font-size: clamp(2.4rem, 11vw, 3.4rem);
  }
}

@media (max-width: 520px) {
  .hero {
    padding-bottom: 48vh;
  }

  .hero-visual {
    height: 46%;
  }

  .phone {
    border-radius: 14px;
    padding: 5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-copy,
  .desk,
  .scan-line,
  .scan-beam,
  .hero-glow,
  .reveal {
    animation: none !important;
    transition: none !important;
    opacity: 1;
    transform: none;
  }
}