:root{
  --bg0:#07060b;
  --bg1:#120a14;
  --bg2:#08101b;
  --text:#f5f2f7;
  --muted:rgba(245,242,247,.68);
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.06);
  --glass2:rgba(255,255,255,.10);
  --accent:#ff4d6d;
  --accent2:#ffb3c1;
  --shadow: 0 20px 60px rgba(0,0,0,.45);
  --radius:22px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  color:var(--text);
  background: radial-gradient(1200px 600px at 20% 10%, rgba(255,77,109,.22), transparent 60%),
              radial-gradient(900px 500px at 80% 30%, rgba(255,179,193,.14), transparent 55%),
              radial-gradient(900px 700px at 50% 90%, rgba(80,160,255,.10), transparent 60%),
              linear-gradient(160deg, var(--bg1), var(--bg0) 45%, var(--bg2));
  font-family: "Noto Sans TC", system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  overflow:hidden;
}

#noise{
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='.35'/%3E%3C/svg%3E");
  mix-blend-mode:overlay;
  opacity:.12;
}

.topbar{
  position:fixed;
  top:0; left:0; right:0;
  height:64px;
  padding:0 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  z-index:50;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(0,0,0,.55), rgba(0,0,0,.20));
  border-bottom:1px solid var(--line);
}

.brand{ display:flex; gap:10px; align-items:baseline; }
.dot{
  width:10px; height:10px; border-radius:50%;
  background: radial-gradient(circle at 30% 30%, #fff, var(--accent));
  box-shadow:0 0 24px rgba(255,77,109,.45);
}
.brand__title{
  font-family:"Playfair Display", serif;
  font-size:18px;
  letter-spacing:.4px;
}
.brand__sub{
  font-size:12px;
  color:var(--muted);
}

.nav{
  display:flex;
  gap:8px;
  align-items:center;
  overflow:auto;
  max-width:52vw;
}
.nav__btn{
  color:var(--muted);
  background:transparent;
  border:1px solid transparent;
  padding:8px 10px;
  border-radius:999px;
  cursor:pointer;
  font-size:13px;
  transition: all .2s ease;
  white-space:nowrap;
}
.nav__btn:hover{
  color:var(--text);
  border-color:var(--line);
  background:rgba(255,255,255,.04);
}
.actions{ display:flex; gap:10px; align-items:center; }

.pill{
  display:flex; gap:8px; align-items:center;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text);
  padding:8px 12px;
  border-radius:999px;
  cursor:pointer;
  transition:transform .15s ease, background .2s ease;
}
.pill:hover{ transform: translateY(-1px); background:rgba(255,255,255,.06); }
.pill[aria-pressed="true"]{
  border-color: rgba(255,77,109,.45);
  box-shadow: 0 0 0 3px rgba(255,77,109,.12);
}

main{ height:100vh; width:100vw; padding-top:64px; }

.page{
  position:absolute;
  inset:64px 0 0 0;
  display:none;
  overflow:auto;
}
.page--active{ display:block; }

/* Heart */
#heartCanvas{
  position:absolute;
  inset:0;
  width:100%;
  height:calc(100% - 0px);
}
.hero{
  position:relative;
  max-width:820px;
  margin:0 auto;
  padding:72px 18px 48px;
  text-align:center;
}
.hero__kicker{
  color:var(--muted);
  letter-spacing:.2em;
  text-transform:uppercase;
  font-size:12px;
}
.hero__title{
  margin:12px 0 10px;
  font-family:"Playfair Display", serif;
  font-size:56px;
  line-height:1.05;
  text-shadow:0 18px 60px rgba(0,0,0,.55);
}
.hero__desc{
  color:var(--muted);
  font-size:15px;
  line-height:1.7;
  margin:0 auto 22px;
  max-width:620px;
}
.hero__cta{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
.hero__footnote{
  margin-top:18px;
  color:rgba(255,255,255,.55);
  font-size:12px;
}

.btn{
  border-radius:999px;
  padding:12px 16px;
  border:1px solid var(--line);
  cursor:pointer;
  font-size:14px;
  color:var(--text);
  background:rgba(255,255,255,.04);
  transition: transform .15s ease, background .2s ease, border-color .2s ease;
}
.btn:hover{ transform: translateY(-1px); background:rgba(255,255,255,.07); }
.btn--primary{
  border-color: rgba(255,77,109,.45);
  background: linear-gradient(135deg, rgba(255,77,109,.28), rgba(255,179,193,.10));
  box-shadow: 0 18px 50px rgba(255,77,109,.12);
}
.btn--ghost{ background:rgba(255,255,255,.03); }

.toast{
  position:fixed;
  left:50%;
  bottom:18px;
  transform:translateX(-50%);
  background:rgba(0,0,0,.55);
  border:1px solid var(--line);
  padding:10px 12px;
  border-radius:999px;
  font-size:13px;
  color:var(--text);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  opacity:0;
  pointer-events:none;
  transition: opacity .25s ease, transform .25s ease;
}
.toast--show{ opacity:1; transform:translateX(-50%) translateY(-6px); }

/* Gift */
.center{
  min-height:calc(100vh - 64px);
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:12px;
  padding:32px 18px 60px;
}
.gift{
  width:180px;
  height:180px;
  position:relative;
  transform-style:preserve-3d;
  filter: drop-shadow(0 24px 60px rgba(0,0,0,.6));
  cursor:pointer;
}
.gift__box{
  position:absolute;
  inset:18px 18px 0 18px;
  border-radius:18px;
  background: linear-gradient(135deg, rgba(255,77,109,.25), rgba(255,255,255,.08));
  border:1px solid rgba(255,255,255,.14);
}
.gift__lid{
  position:absolute;
  left:10px; right:10px; top:0;
  height:56px;
  border-radius:16px;
  background: linear-gradient(135deg, rgba(255,179,193,.18), rgba(255,255,255,.10));
  border:1px solid rgba(255,255,255,.16);
  transform-origin: bottom center;
  transition: transform .65s cubic-bezier(.2,.9,.2,1);
}
.gift__ribbon{
  position:absolute;
  left:50%;
  top:18px;
  width:14px;
  height:152px;
  transform:translateX(-50%);
  border-radius:999px;
  background:rgba(255,77,109,.65);
  box-shadow: 0 0 30px rgba(255,77,109,.25);
}
.gift__shine{
  position:absolute;
  inset:-30px;
  background: radial-gradient(circle at 40% 20%, rgba(255,255,255,.18), transparent 55%);
  opacity:.75;
  pointer-events:none;
}

.gift--open .gift__lid{
  transform: rotateX(70deg) translateY(-12px);
}

.sectionTitle{
  margin:8px 0 0;
  font-family:"Playfair Display", serif;
  font-size:30px;
  letter-spacing:.2px;
  text-align:center;
}
.sectionDesc{
  margin:0;
  max-width:720px;
  color:var(--muted);
  text-align:center;
  line-height:1.7;
  font-size:14px;
}
.muted{ color:var(--muted); }
.tiny{ font-size:12px; }

/* Wrap / cards */
.wrap{
  max-width:980px;
  margin:0 auto;
  padding:28px 18px 80px;
}
.card{
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

/* Gallery grid */
.grid{
  margin-top:18px;
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap:12px;
}
.photo{
  grid-column: span 4;
  min-height:210px;
  border-radius:18px;
  overflow:hidden;
  position:relative;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(255,255,255,.03);
  cursor:pointer;
}
.photo img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  transform: scale(1.02);
  transition: transform .35s ease, filter .35s ease;
  filter:saturate(1.02) contrast(1.02);
}
.photo:hover img{ transform:scale(1.06); }
.photo__cap{
  position:absolute;
  left:0; right:0; bottom:0;
  padding:10px 12px;
  font-size:13px;
  color:rgba(255,255,255,.88);
  background: linear-gradient(to top, rgba(0,0,0,.62), transparent);
}

/* Timeline */
.timeline{
  margin-top:24px;
}
.subTitle{
  margin:18px 0 10px;
  font-size:16px;
  color:rgba(255,255,255,.9);
}
.timeline__items{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.titem{
  padding:14px 14px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(0,0,0,.22);
}
.titem__when{
  font-size:12px;
  color:var(--muted);
  letter-spacing:.12em;
  text-transform:uppercase;
}
.titem__what{
  margin-top:6px;
  font-size:14px;
  line-height:1.6;
}

/* Quiz */
#quizCard{
  padding:16px;
}
.qTitle{
  margin:0 0 8px;
  font-size:16px;
}
.qDesc{ margin:0 0 14px; color:var(--muted); font-size:13px; line-height:1.6; }
.opts{ display:flex; flex-direction:column; gap:10px; }
.opt{
  text-align:left;
  padding:12px 12px;
  border-radius:16px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  cursor:pointer;
}
.opt:hover{ background:rgba(255,255,255,.06); }
.progress{
  margin-top:14px;
  display:flex;
  gap:10px;
  align-items:center;
  justify-content:space-between;
  color:var(--muted);
  font-size:12px;
}
.bar{
  flex:1;
  height:8px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(0,0,0,.25);
  overflow:hidden;
}
.bar > i{
  display:block;
  height:100%;
  width:0%;
  background: linear-gradient(90deg, rgba(255,77,109,.65), rgba(255,179,193,.30));
}

/* Letter */
.letter{
  padding:18px 18px;
  line-height:1.85;
  font-size:14px;
}
.letter__hello{ margin-top:0; font-weight:600; }
.letter__sign{ margin-bottom:0; text-align:right; }
.finalCta{
  margin-top:16px;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}

/* Lightbox */
.lightbox{
  position:fixed;
  inset:0;
  background: rgba(0,0,0,.75);
  display:none;
  align-items:center;
  justify-content:center;
  z-index:80;
  padding:18px;
}
.lightbox--open{ display:flex; }
.lightbox img{
  max-width:min(920px, 92vw);
  max-height:72vh;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.16);
  box-shadow: var(--shadow);
}
.lightbox__cap{
  margin-top:10px;
  text-align:center;
  color:rgba(255,255,255,.85);
  font-size:13px;
}
.lightbox__close{
  position:absolute;
  top:18px;
  right:18px;
  width:44px;
  height:44px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.16);
  background: rgba(0,0,0,.35);
  color:#fff;
  font-size:26px;
  cursor:pointer;
}

/* Responsive */
@media (max-width: 880px){
  .nav{ display:none; }
  .hero__title{ font-size:44px; }
  .photo{ grid-column: span 6; min-height:180px; }
}
@media (max-width: 520px){
  .hero{ padding-top:56px; }
  .hero__title{ font-size:40px; }
  .photo{ grid-column: span 12; }
}