:root{
  --bg:#FFF7F0;
  --bg-2:#FFF1F6;
  --ink:#1F1B2E;
  --ink-2:#5A5468;
  --muted:#9892A6;
  --card:#FFFFFF;
  --line:rgba(31,27,46,.08);
  --pink:#FFC7D6;
  --peach:#FFD8B7;
  --yellow:#FFE48A;
  --green:#C7EEC3;
  --blue:#BFD9FF;
  --purple:#D9C8FF;
  --grad: linear-gradient(120deg,#FF9FB8 0%,#C9A4FF 50%,#8EC5FF 100%);
  --shadow-sm: 0 4px 14px rgba(31,27,46,.06);
  --shadow-md: 0 14px 40px rgba(31,27,46,.10);
  --shadow-lg: 0 30px 80px rgba(31,27,46,.18);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter','Fredoka',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  line-height:1.55;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* aurora background */
.aurora{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.aurora .blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.55;animation:drift 18s ease-in-out infinite}
.aurora .b1{width:520px;height:520px;background:#FFC7D6;top:-120px;left:-120px}
.aurora .b2{width:480px;height:480px;background:#BFD9FF;top:10%;right:-140px;animation-delay:-4s}
.aurora .b3{width:420px;height:420px;background:#D9C8FF;bottom:-120px;left:20%;animation-delay:-8s}
.aurora .b4{width:380px;height:380px;background:#FFE48A;bottom:10%;right:10%;animation-delay:-12s}
@keyframes drift{
  0%,100%{transform:translate(0,0) scale(1)}
  50%{transform:translate(30px,-20px) scale(1.06)}
}

/* nav */
.nav{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:24px;
  padding:14px 32px;
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  background:rgba(255,247,240,.65);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}
.brand img{width:32px;height:32px;border-radius:9px;box-shadow:var(--shadow-sm)}
.nav-links{display:flex;gap:22px;margin-left:auto;font-weight:500;color:var(--ink-2)}
.nav-links a{transition:color .2s}
.nav-links a:hover{color:var(--ink)}
.nav-cta{margin-left:8px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;border-radius:999px;
  font-weight:600;font-size:15px;
  transition:transform .15s ease, box-shadow .2s ease, background .2s ease;
  cursor:pointer;border:none;
}
.btn-primary{background:var(--ink);color:#fff;box-shadow:var(--shadow-md)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-ghost{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm);border:1px solid var(--line)}
.btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}

/* layout */
main{max-width:1200px;margin:0 auto;padding:0 32px}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.section-head .eyebrow{margin-bottom:14px}
.section-head h2{font-size:clamp(32px,4.5vw,52px);margin:0 0 14px;line-height:1.1;letter-spacing:-.02em;font-family:'Fredoka',sans-serif;font-weight:600}
.section-head p{color:var(--ink-2);font-size:18px;margin:0}
.eyebrow{
  display:inline-block;padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--ink-2);
  box-shadow:var(--shadow-sm);
}
.grad{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* hero */
.hero{
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  padding:72px 0 56px;
}
.hero-text h1{
  font-family:'Fredoka',sans-serif;font-weight:600;
  font-size:clamp(44px,6vw,76px);
  line-height:1.02;letter-spacing:-.025em;margin:18px 0 18px;
}
.lead{font-size:19px;color:var(--ink-2);max-width:520px;margin:0 0 28px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}
.cta-row.center{justify-content:center}
.meta-row{margin-top:22px;display:flex;gap:18px;align-items:center;color:var(--ink-2);font-size:14px}
.rating{display:flex;align-items:center;gap:10px}
.stars{color:#FFB400;letter-spacing:2px}

/* hero visual */
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;min-height:600px}

/* carousel */
.carousel{
  position:relative;width:100%;max-width:560px;height:600px;
  display:flex;align-items:center;justify-content:center;
  perspective:1400px;
}
.car-track{
  position:relative;width:100%;height:100%;
  transform-style:preserve-3d;
}
.car-slide{
  position:absolute;left:50%;top:50%;
  width:58%;
  transform:translate(-50%,-50%) translateX(var(--x,0)) rotate(var(--r,0deg)) scale(var(--s,.8));
  opacity:var(--o,0);
  transition:transform .6s cubic-bezier(.22,.61,.36,1), opacity .5s ease, filter .5s ease;
  z-index:var(--z,1);
  filter:var(--f,blur(2px));
  pointer-events:none;
}
.car-slide.is-active{pointer-events:auto}
.car-slide img{
  width:100%;border-radius:38px;display:block;
  box-shadow:var(--shadow-lg);
}
.car-arrow{
  position:absolute;top:50%;transform:translateY(-50%);
  width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--line);
  color:var(--ink);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-md);z-index:10;
  transition:transform .2s ease, box-shadow .2s ease;
}
.car-arrow:hover{transform:translateY(-50%) scale(1.08);box-shadow:var(--shadow-lg)}
.car-prev{left:-4px}
.car-next{right:-4px}
.car-dots{
  position:absolute;bottom:6px;left:50%;transform:translateX(-50%);
  display:flex;gap:8px;z-index:10;
}
.car-dots button{
  width:8px;height:8px;border-radius:50%;border:none;cursor:pointer;
  background:rgba(31,27,46,.22);padding:0;
  transition:width .25s ease, background .25s ease;
}
.car-dots button.is-active{width:24px;border-radius:999px;background:var(--ink)}

.float-chip{
  position:absolute;padding:8px 16px;border-radius:999px;
  background:#fff;font-weight:600;font-size:14px;
  box-shadow:var(--shadow-md);
  animation:bob 4s ease-in-out infinite;
}
.chip-1{top:6%;right:-2%;color:#E15A7A;background:#FFE3EB;animation-delay:-1s}
.chip-2{bottom:18%;left:-4%;color:#5572C9;background:#DCE8FF;animation-delay:-2s}
.chip-3{bottom:4%;right:10%;color:#7C5BC9;background:#E7DCFF;animation-delay:-3s}
@keyframes bob{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-10px)}
}

/* strip */
.strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  margin:24px 0 80px;padding:28px;
  background:#fff;border:1px solid var(--line);border-radius:24px;
  box-shadow:var(--shadow-sm);
}
.strip-item{display:flex;flex-direction:column;align-items:center;gap:4px}
.strip-item b{font-family:'Fredoka',sans-serif;font-size:34px;font-weight:600;letter-spacing:-.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.strip-item span{color:var(--ink-2);font-size:14px}

/* features */
.features{padding:60px 0}
.feature-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.feature{
  background:#fff;border:1px solid var(--line);border-radius:24px;
  padding:28px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease, box-shadow .25s ease;
}
.feature:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.feature h3{margin:14px 0 6px;font-family:'Fredoka',sans-serif;font-weight:600;font-size:22px}
.feature p{margin:0;color:var(--ink-2);font-size:15px}
.f-icon{
  width:54px;height:54px;border-radius:18px;
  display:flex;align-items:center;justify-content:center;
  font-size:28px;
}
.f-pink{background:var(--pink)}
.f-yellow{background:var(--yellow)}
.f-purple{background:var(--purple)}
.f-green{background:var(--green)}
.f-blue{background:var(--blue)}
.f-peach{background:var(--peach)}

/* screens */
.screens{padding:80px 0}
.screen-row{
  display:flex;gap:20px;overflow-x:auto;padding:20px 4px 30px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.screen-row::-webkit-scrollbar{height:8px}
.screen-row::-webkit-scrollbar-thumb{background:rgba(31,27,46,.12);border-radius:999px}
.screen-row figure{
  flex:0 0 auto;width:260px;margin:0;scroll-snap-align:center;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.screen-row img{
  width:100%;border-radius:32px;
  box-shadow:var(--shadow-lg);
  transition:transform .3s ease;
}
.screen-row figure:hover img{transform:translateY(-6px)}
.screen-row figcaption{color:var(--ink-2);font-size:14px;font-weight:500}

/* diary */
.diary{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;
  padding:80px 0;align-items:center;
}
.diary-card{
  background:#FFFBF2;border-radius:28px;padding:36px;
  box-shadow:var(--shadow-md);
  border:1px solid rgba(31,27,46,.06);
  transform:rotate(-2deg);
  position:relative;
}
.diary-card::before{
  content:"";position:absolute;top:-14px;left:50%;transform:translateX(-50%) rotate(2deg);
  width:120px;height:28px;background:rgba(255,200,140,.55);border-radius:4px;
  box-shadow:0 2px 6px rgba(0,0,0,.06);
}
.diary-head{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.diary-date{font-weight:600;color:var(--ink-2);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(0,0,0,.2)}
.diary-face{
  width:44px;height:44px;border-radius:50%;background:#FFE48A;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:22px;margin-left:auto;
}
.diary-tag{
  background:#D6F4D2;color:#2E7A36;font-weight:600;font-size:13px;
  padding:4px 10px;border-radius:8px;
}
.diary-body{margin:0;font-size:17px;line-height:1.7;color:#2A2638}
.heart{color:#E55C7A}
.diary-copy h2{font-family:'Fredoka',sans-serif;font-weight:600;font-size:clamp(30px,4vw,46px);margin:14px 0 14px;line-height:1.1;letter-spacing:-.02em}
.diary-copy p{color:var(--ink-2);font-size:17px;margin:0 0 24px;max-width:460px}

/* download */
.download{padding:80px 0}
.dl-card{
  background:var(--grad);
  border-radius:32px;padding:64px 32px;
  text-align:center;color:#fff;
  box-shadow:var(--shadow-lg);
  position:relative;overflow:hidden;
}
.dl-card::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 80% 20%,rgba(255,255,255,.35),transparent 50%);
  pointer-events:none;
}
.dl-logo{width:72px;height:72px;border-radius:20px;margin:0 auto 18px;box-shadow:var(--shadow-md);background:#fff}
.dl-card h2{font-family:'Fredoka',sans-serif;font-weight:600;font-size:clamp(30px,4vw,46px);margin:0 0 10px;letter-spacing:-.02em}
.dl-card p{margin:0 0 28px;opacity:.92;font-size:17px}
.dl-card .btn-primary{background:#1F1B2E}
.dl-card .btn-ghost{background:rgba(255,255,255,.92)}

/* faq */
.faq{padding:80px 0 100px}
.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:18px 22px;box-shadow:var(--shadow-sm);
  transition:box-shadow .2s ease;
}
.faq details[open]{box-shadow:var(--shadow-md)}
.faq summary{
  cursor:pointer;font-weight:600;font-size:17px;
  list-style:none;display:flex;align-items:center;justify-content:space-between;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";font-size:22px;color:var(--muted);transition:transform .2s ease;
}
.faq details[open] summary::after{content:"–"}
.faq p{margin:12px 0 0;color:var(--ink-2)}

/* footer */
.footer{
  max-width:1200px;margin:40px auto 0;padding:32px;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;
  border-top:1px solid var(--line);
  color:var(--ink-2);font-size:14px;
}
.foot-left{display:flex;align-items:center;gap:12px}
.foot-left img{width:36px;height:36px;border-radius:10px}
.foot-left strong{display:block;color:var(--ink);font-size:16px}
.foot-links{display:flex;gap:22px;font-weight:500}
.foot-links a:hover{color:var(--ink)}
.foot-meta{text-align:right}

/* responsive */
@media (max-width: 960px){
  .hero{grid-template-columns:1fr;gap:24px;padding:48px 0 32px;text-align:center}
  .lead{margin-left:auto;margin-right:auto}
  .cta-row{justify-content:center}
  .meta-row{justify-content:center}
  .hero-visual{min-height:520px}
  .carousel{height:520px;max-width:420px}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .diary{grid-template-columns:1fr;gap:32px;text-align:center}
  .diary-copy p{margin-left:auto;margin-right:auto}
  .strip{grid-template-columns:repeat(2,1fr)}
  .footer{grid-template-columns:1fr;text-align:center}
  .foot-left{justify-content:center}
  .foot-links{justify-content:center}
  .foot-meta{text-align:center}
  .nav{padding:12px 18px}
  main{padding:0 18px}
}
@media (max-width: 600px){
  .nav-links{display:none}
  .feature-grid{grid-template-columns:1fr}
  .strip{grid-template-columns:repeat(2,1fr);padding:20px}
  .strip-item b{font-size:28px}
  .hero-visual{min-height:460px}
  .carousel{height:460px}
  .car-slide{width:66%}
  .car-arrow{width:38px;height:38px}
  .dl-card{padding:48px 22px}
}