:root{
  --paper:#FCFCFA;
  --ink:#1b1a15;
  --soft-ink:#56585c;
  --quiet:#8c897f;
  --hairline:#e7e4dc;
  --pale:#f3f1ea;
  --seal:#d83a2e;
  --font-display:'Cormorant Garamond','Songti SC','Noto Serif SC',Georgia,serif;
  --font-body:'Inter',-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;
  --edge:clamp(1.5rem,6vw,7rem);
  --maxw:1120px;
  --ease:cubic-bezier(.22,1,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:1.0625rem;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%}
a{color:inherit}

/* paper grain so #FCFCFA never reads as flat digital white */
.grain{
  position:fixed;inset:0;z-index:2;pointer-events:none;
  opacity:.04;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%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");
}

/* ---------- type ---------- */
.overline{
  font-size:.75rem;font-weight:500;letter-spacing:.22em;text-transform:uppercase;
  color:var(--quiet);
}
.measure{max-width:60ch}
.seal{color:var(--seal)}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:10;
  display:flex;align-items:center;justify-content:space-between;
  padding:1.1rem var(--edge);
  transition:background .4s var(--ease),border-color .4s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:color-mix(in srgb,var(--paper) 86%,transparent);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--hairline);
}
.brand{display:flex;align-items:center;gap:.55rem;text-decoration:none;color:var(--ink)}
.brand-eye{width:30px;height:30px;color:var(--seal);flex:none}
.brand-name{font-family:var(--font-display);font-size:1.5rem;font-weight:600;letter-spacing:.01em}
.nav-right{display:flex;align-items:center;gap:1.1rem}
.lang{
  background:none;border:1px solid var(--hairline);border-radius:999px;
  font-family:var(--font-body);font-size:.78rem;color:var(--soft-ink);
  padding:.35rem .8rem;cursor:pointer;letter-spacing:.04em;
  transition:border-color .25s,color .25s;
}
.lang:hover{border-color:var(--quiet);color:var(--ink)}
.nav-cta{
  font-family:var(--font-display);font-size:1.15rem;text-decoration:none;color:var(--ink);
  position:relative;padding-bottom:2px;
}
.nav-cta::after{
  content:"";position:absolute;left:0;bottom:0;height:1.5px;width:100%;
  background:var(--seal);transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);
}
.nav-cta:hover::after{transform:scaleX(1)}

/* ---------- hero ---------- */
.hero{
  max-width:var(--maxw);margin:0 auto;
  padding:clamp(3.5rem,11vh,8rem) var(--edge) clamp(5rem,12vw,9rem);
  min-height:84vh;display:flex;flex-direction:column;justify-content:center;
}
.hero-eye{margin-bottom:clamp(1.5rem,4vw,2.6rem)}
.eye{width:clamp(64px,9vw,100px);height:auto;display:block}
.hero .overline{margin-bottom:1.4rem}
.hero-title{
  font-family:var(--font-display);font-weight:600;
  font-size:clamp(3rem,8.5vw,6.75rem);line-height:1.02;letter-spacing:-.02em;
  margin-bottom:1.6rem;
}
.hero-sub{
  font-size:clamp(1.05rem,1.7vw,1.32rem);line-height:1.55;color:var(--soft-ink);
  max-width:34ch;margin-bottom:2.4rem;
}

/* ---------- signup ---------- */
.signup{display:flex;gap:.6rem;flex-wrap:wrap;max-width:30rem}
.signup-input{
  flex:1 1 14rem;min-width:0;
  font-family:var(--font-body);font-size:1rem;color:var(--ink);
  background:transparent;border:none;border-bottom:1.5px solid var(--ink);
  padding:.7rem .2rem;transition:border-color .25s;
}
.signup-input::placeholder{color:var(--quiet)}
.signup-input:focus{outline:none;border-bottom-color:var(--seal)}
.signup-btn{
  font-family:var(--font-display);font-size:1.2rem;font-weight:600;
  background:var(--seal);color:#fff;border:none;border-radius:999px;
  padding:.7rem 1.7rem;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),opacity .2s;
}
.signup-btn:hover{opacity:.92}
.signup-btn:active{transform:scale(.97)}
.signup.done .signup-input,.signup.done .signup-btn{display:none}
.signup-note{font-size:.85rem;color:var(--quiet);margin-top:1rem;letter-spacing:.02em}
.signup-ok{
  display:none;align-items:center;gap:.6rem;
  font-family:var(--font-display);font-size:1.4rem;color:var(--ink);
}
.signup.done .signup-ok{display:flex}
.signup-ok .stamp{
  width:34px;height:34px;border:2px solid var(--seal);border-radius:7px;color:var(--seal);
  display:flex;align-items:center;justify-content:center;font-size:1rem;
  transform:rotate(-8deg);
}

/* ---------- bands ---------- */
.band{padding:clamp(5.5rem,12vw,10rem) var(--edge)}
.band>*{max-width:var(--maxw);margin-left:auto;margin-right:auto}
.band .overline{margin-bottom:1.5rem}
.band-title{
  font-family:var(--font-display);font-weight:600;
  font-size:clamp(2rem,4.8vw,3.6rem);line-height:1.12;letter-spacing:-.015em;
  margin-bottom:1.6rem;
}
.band-title.big{font-size:clamp(2.3rem,5.6vw,4.4rem)}
.band-body{font-size:1.1rem;line-height:1.7;color:var(--soft-ink)}

/* privacy — the one dark, dramatic band */
.privacy{background:var(--ink);color:var(--paper)}
.privacy .overline{color:#b9b6ac}
.privacy .band-body{color:#cfccc2}
.triad{
  list-style:none;display:flex;flex-wrap:wrap;gap:clamp(1.5rem,5vw,3.5rem);
  margin-top:2.8rem;max-width:var(--maxw);
}
.triad li{
  font-family:var(--font-display);font-weight:600;
  font-size:clamp(1.6rem,3.4vw,2.6rem);display:flex;align-items:center;gap:.7rem;
}
.triad li::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--seal);flex:none}

/* ---------- features ---------- */
.features{max-width:var(--maxw);margin:0 auto;padding:clamp(4rem,9vw,7rem) var(--edge)}
.section-lead{margin-bottom:clamp(3rem,7vw,5rem)}
.feature{
  display:grid;grid-template-columns:1fr 1fr;align-items:center;
  gap:clamp(2rem,6vw,5.5rem);
  padding:clamp(3rem,7vw,5.5rem) 0;
}
.feature+.feature{border-top:1px solid var(--hairline)}
.feature.reverse .feature-shot{order:-1}
.feature h3{
  font-family:var(--font-display);font-weight:600;
  font-size:clamp(1.7rem,3.6vw,2.5rem);line-height:1.1;letter-spacing:-.01em;
  margin-bottom:1rem;
}
.feature-text p{font-size:1.08rem;color:var(--soft-ink)}
.feature-shot{display:flex;justify-content:center}
.feature.reverse .feature-text{padding-left:0}

/* phone frame */
.phone{
  width:clamp(214px,26vw,282px);
  background:#fff;border:1px solid var(--hairline);border-radius:38px;padding:7px;
  box-shadow:0 34px 70px -34px rgba(27,26,21,.28);
}
.phone img{display:block;width:100%;border-radius:31px}

/* compatibility interstitial */
.feature.center{display:block;text-align:center;border-top:1px solid var(--hairline)}
.feature.center .measure{margin:0 auto}
.two-eyes{display:flex;justify-content:center;align-items:center;margin-bottom:1.6rem}
.two-eyes svg{width:clamp(48px,7vw,66px);height:auto}
.two-eyes svg:last-child{margin-left:-18px}

/* ---------- provenance canon ---------- */
.canon{
  display:flex;flex-wrap:wrap;gap:clamp(2rem,7vw,5rem);margin-top:3rem;
  padding-top:2.6rem;border-top:1px solid var(--hairline);
}
.canon-item{display:flex;flex-direction:column;gap:.4rem}
.canon-cn{font-family:var(--font-display);font-size:clamp(1.9rem,4vw,2.7rem);font-weight:600;letter-spacing:.06em}
.canon-en{font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;color:var(--quiet)}

/* provenance + ethos + waitlist tones */
.provenance{background:var(--paper)}
.ethos{background:var(--pale)}
.ethos .band-title{max-width:18ch}
.waitlist{background:var(--paper);text-align:center}
.waitlist>*{margin-left:auto;margin-right:auto}
.center-form{margin:2rem auto 0;justify-content:center}
.waitlist .signup-note{text-align:center}

/* ---------- footer ---------- */
.footer{
  background:var(--ink);color:var(--paper);
  padding:clamp(3.5rem,7vw,5rem) var(--edge);
  display:flex;flex-direction:column;align-items:center;gap:1rem;text-align:center;
}
.footer-brand{display:flex;align-items:center;gap:.6rem;color:var(--seal)}
.footer-brand .brand-name{color:var(--paper)}
.footer-line{font-family:var(--font-display);font-size:1.35rem;color:#cfccc2}
.footer-links{display:flex;gap:.7rem;align-items:center;font-size:.95rem}
.footer-links a{color:#cfccc2;text-decoration:none;transition:color .25s}
.footer-links a:hover{color:var(--paper)}
.footer-links .dot{color:#666156}
.footer-legal{font-size:.78rem;color:#83807a;letter-spacing:.02em}

/* ---------- the living eye ---------- */
.eye-outline{stroke-dasharray:100;stroke-dashoffset:100;animation:eye-draw 1.3s var(--ease) .25s forwards}
.eye-iris{transform-box:fill-box;transform-origin:center;animation:eye-breathe 5.5s ease-in-out 1.7s infinite}
@keyframes eye-draw{to{stroke-dashoffset:0}}
@keyframes eye-breathe{0%,100%{transform:scale(1)}50%{transform:scale(1.07)}}

/* ---------- scroll reveals ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .75s var(--ease),transform .75s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:760px){
  .feature{grid-template-columns:1fr;gap:2.2rem}
  .feature.reverse .feature-shot{order:0}
  .feature-shot{order:0}
  .nav-cta{display:none}
  .hero{min-height:auto}
}

/* ---------- motion manners ---------- */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .eye-outline{stroke-dashoffset:0;animation:none}
  .eye-iris{animation:none}
  .nav,.nav-cta::after,.lang,.signup-input,.signup-btn{transition:none}
}