/* ===========================================================
   推し活ノート (OshiNote) — Landing Page
   Refined-kawaii system · light mode
   =========================================================== */

:root{
  /* paper / neutrals (cool, low-sat) */
  --paper:#FCFCFE;
  --paper-2:#F5F6FB;
  --card:#FFFFFF;

  /* primary scale (indigo / violet — unisex) — kept as --pink-* token names */
  --pink-50:#F1F2FD;
  --pink-100:#E5E7FB;
  --pink-200:#CDD1F6;
  --pink-300:#AAB0F0;
  --pink-400:#8189E8;
  --pink-500:#6168DE;
  --pink-600:#4B51CE;
  --pink-700:#3A3FAE;

  /* warm pop accent (used sparingly) */
  --coral:#F2766B;
  --coral-d:#E45A4E;

  /* category accents (shared chroma, varied hue) */
  --lav:#9B86E0;
  --blue:#5B9BE6;
  --gold:#E7B85C;
  --mint:#4FC2A0;

  /* ink */
  --ink:#2C2E3A;
  --ink-2:#62657A;
  --ink-3:#9A9CB0;
  --line:#EBECF4;
  --line-2:#E7E8F2;

  /* effects */
  --sh-sm:0 2px 10px rgba(58,63,174,.06);
  --sh-md:0 14px 38px rgba(58,63,174,.10);
  --sh-lg:0 34px 80px rgba(58,63,174,.16);
  --sh-phone:0 40px 90px rgba(35,38,90,.26), 0 12px 30px rgba(35,38,90,.16);

  --r-sm:12px;
  --r-md:18px;
  --r-lg:26px;
  --r-xl:34px;
  --r-pill:999px;

  --font-display:"Zen Kaku Gothic New",-apple-system,sans-serif;
  --font-body:"Noto Sans JP",-apple-system,sans-serif;
  --font-num:"Outfit","Zen Kaku Gothic New",sans-serif;

  --wrap:1140px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--pink-200);color:var(--pink-700)}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}

/* ---------- typography helpers ---------- */
.eyebrow{
  font-family:var(--font-display);
  font-weight:700;
  font-size:.8rem;
  letter-spacing:.16em;
  color:var(--pink-600);
  display:inline-flex;align-items:center;gap:.55em;
}
.eyebrow::before{
  content:"";width:22px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--pink-400),var(--pink-200));
}
h1,h2,h3{font-family:var(--font-display);font-weight:700;line-height:1.34;letter-spacing:.01em}
.display{
  font-weight:900;
  font-size:clamp(2.1rem,4.6vw,3.5rem);
  line-height:1.32;
  letter-spacing:.015em;
  text-wrap:balance;
}
.sect-title{
  font-weight:900;
  font-size:clamp(1.7rem,3.3vw,2.6rem);
  line-height:1.4;
  text-wrap:balance;
}
.lead{
  font-size:1.04rem;
  color:var(--ink-2);
  line-height:2;
  text-wrap:pretty;
}
.num{font-family:var(--font-num);font-feature-settings:"tnum";letter-spacing:-.01em}
.pink{color:var(--pink-600)}
.hl{
  background:linear-gradient(transparent 62%, var(--pink-200) 62%);
  padding:0 .08em;
}

/* ---------- dev-stage notice ---------- */
.dev-badge{
  display:inline-flex;align-items:center;gap:.5em;
  font-family:var(--font-display);font-weight:700;font-size:.8rem;
  color:var(--coral-d);
  background:#FDEEEC;border:1px solid #F8D4CF;
  padding:.42rem 1rem;border-radius:var(--r-pill);
}
.dev-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--coral);box-shadow:0 0 0 3px rgba(242,118,107,.22)}
.hero-note{margin-top:18px;font-size:.84rem;color:var(--ink-3);display:flex;align-items:center;gap:.5em;max-width:30em}
.image-note{
  display:inline-flex;align-items:center;gap:.5em;margin-top:18px;
  font-family:var(--font-display);font-weight:600;font-size:.82rem;color:var(--ink-2);
  background:var(--pink-50);border:1px solid var(--pink-100);
  padding:.5rem 1.1rem;border-radius:var(--r-pill);
}

/* ---------- FAQ ---------- */
.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);overflow:hidden;
}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 26px;
  font-family:var(--font-display);font-weight:700;font-size:1.04rem;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .q{display:flex;align-items:center;gap:14px}
.faq summary .q b{color:var(--pink-500);font-family:var(--font-num);font-weight:700;font-size:1.1rem}
.faq summary .chev{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--pink-50);color:var(--pink-600);display:grid;place-items:center;font-size:.9rem;transition:transform .25s}
.faq[open] summary .chev{transform:rotate(45deg)}
.faq .ans{padding:0 26px 22px 64px;color:var(--ink-2);font-size:.95rem;line-height:1.95}

/* ---------- buttons ---------- */
.btn{
  font-family:var(--font-display);
  font-weight:700;
  font-size:1rem;
  border:0;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  padding:1rem 1.9rem;
  border-radius:var(--r-pill);
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.btn-primary{
  background:linear-gradient(180deg,var(--pink-500),var(--pink-600));
  color:#fff;
  box-shadow:0 12px 26px rgba(75,81,206,.32);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(75,81,206,.42)}
.btn-ghost{
  background:#fff;
  color:var(--pink-600);
  box-shadow:inset 0 0 0 1.6px var(--pink-200), var(--sh-sm);
}
.btn-ghost:hover{transform:translateY(-2px);box-shadow:inset 0 0 0 1.6px var(--pink-300), var(--sh-md)}
.btn .heart{font-size:1.05em;line-height:1}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  backdrop-filter:saturate(1.4) blur(14px);
  background:rgba(255,252,253,.78);
  border-bottom:1px solid transparent;
  transition:border-color .3s, box-shadow .3s;
}
.site-head.scrolled{border-color:var(--line);box-shadow:0 6px 24px rgba(58,63,174,.07)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:.5rem;font-family:var(--font-display);font-weight:900;font-size:1.18rem}
.brand .mark{
  width:30px;height:30px;border-radius:9px;
  background:linear-gradient(150deg,var(--pink-400),var(--pink-600));
  display:grid;place-items:center;color:#fff;font-size:1rem;
  box-shadow:0 6px 14px rgba(75,81,206,.32);
}
.brand .heart{color:var(--coral);font-size:.95em}
.nav-links{display:flex;gap:2rem;font-size:.92rem;font-weight:500;color:var(--ink-2)}
.nav-links a{position:relative;transition:color .2s}
.nav-links a:hover{color:var(--pink-600)}
.nav-links a::after{content:"";position:absolute;left:0;right:100%;bottom:-6px;height:2px;border-radius:2px;background:var(--pink-400);transition:right .25s}
.nav-links a:hover::after{right:0}
.nav-cta{display:flex;align-items:center;gap:.8rem}
.nav .btn{padding:.66rem 1.25rem;font-size:.9rem}
.burger{display:none}

/* ===========================================================
   HERO
   =========================================================== */
.hero{position:relative;padding:64px 0 90px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:-1;
  background:
   radial-gradient(60% 50% at 82% 8%, var(--pink-100), transparent 70%),
   radial-gradient(46% 40% at 6% 28%, #F3ECFF, transparent 70%),
   linear-gradient(180deg,var(--paper-2),var(--paper));
}
.blob{position:absolute;border-radius:50%;filter:blur(8px);opacity:.5;z-index:-1}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero-copy .display{margin:18px 0 22px}
.hero-copy .lead{max-width:30em}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.hero-note{margin-top:18px;font-size:.84rem;color:var(--ink-3);display:flex;align-items:center;gap:.5em}
.hero-note b{color:var(--pink-600);font-weight:700}
.hero-stage{position:relative;display:flex;justify-content:center;align-items:center}
.hero-stage .deco{position:absolute;z-index:1}
.tag-float{
  position:absolute;z-index:5;
  background:#fff;border-radius:var(--r-pill);
  padding:.55rem .95rem .55rem .6rem;
  display:flex;align-items:center;gap:.5rem;
  box-shadow:var(--sh-md);
  font-family:var(--font-display);font-weight:700;font-size:.82rem;
  border:1px solid var(--line);
}
.tag-float .ic{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-size:.95rem}
.tag-float small{display:block;font-family:var(--font-num);font-weight:600;color:var(--pink-600);font-size:.92rem;line-height:1}
.tag-float .lab{display:block;font-size:.7rem;color:var(--ink-3);font-weight:500}

/* ===========================================================
   SECTION SHELL
   =========================================================== */
section{position:relative}
.section{padding:96px 0}
.section-head{max-width:42em;margin:0 auto 56px;text-align:center}
.section-head .eyebrow{margin-bottom:16px}
.section-head .lead{margin-top:18px}

/* ---------- problem ---------- */
.problem{background:
   radial-gradient(70% 60% at 50% 0%, var(--pink-50), transparent 70%),
   var(--paper);}
.problem-card{
  max-width:880px;margin:0 auto;
  background:#fff;border-radius:var(--r-xl);
  padding:54px clamp(28px,5vw,68px);
  box-shadow:var(--sh-md);
  border:1px solid var(--line);
  text-align:center;
}
.problem-card .sect-title{margin-bottom:24px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:30px 0 8px}
.kw{
  font-family:var(--font-display);font-weight:700;font-size:.9rem;
  background:var(--pink-50);color:var(--pink-600);
  border:1px solid var(--pink-100);
  padding:.5rem 1rem;border-radius:var(--r-pill);
}

/* ---------- features ---------- */
.features{background:linear-gradient(180deg,var(--paper),var(--paper-2))}
.feat-layout{display:grid;grid-template-columns:1fr 360px;gap:64px;align-items:center}
.feat-list{display:flex;flex-direction:column;gap:18px}
.feat{
  display:grid;grid-template-columns:56px 1fr;gap:20px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px 26px;box-shadow:var(--sh-sm);
  transition:transform .2s, box-shadow .2s;
}
.feat:hover{transform:translateY(-3px);box-shadow:var(--sh-md)}
.feat .ic{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;
  font-size:1.5rem;
  background:var(--pink-50);
}
.feat h3{font-size:1.12rem;margin-bottom:4px}
.feat p{font-size:.92rem;color:var(--ink-2);line-height:1.85}
.feat-aside{position:sticky;top:100px;display:flex;justify-content:center}

/* ---------- screens showcase ---------- */
.screens{background:
   radial-gradient(60% 50% at 50% 100%, var(--pink-50), transparent 70%),var(--paper);}
.screen-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:30px;align-items:start;
}
.screen-card{text-align:center}
.screen-card .phone{margin:0 auto 22px}
.screen-card h3{font-size:1.12rem;color:var(--pink-600);margin-bottom:6px}
.screen-card p{font-size:.9rem;color:var(--ink-2)}

/* ---------- use cases / differentiation row ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);
  padding:46px clamp(26px,3.5vw,46px);box-shadow:var(--sh-sm);
}
.panel h3{font-size:1.32rem;margin-bottom:8px}
.panel .eyebrow{margin-bottom:18px}
.persona-list{display:flex;flex-direction:column;gap:14px;margin-top:24px}
.persona{display:flex;align-items:center;gap:14px;font-weight:500;color:var(--ink)}
.persona .dot{
  width:34px;height:34px;border-radius:50%;flex:0 0 auto;
  background:var(--pink-50);display:grid;place-items:center;color:var(--pink-500);font-size:1rem;
}
.diff{
  background:linear-gradient(160deg,var(--pink-500),var(--pink-700));
  color:#fff;position:relative;overflow:hidden;
}
.diff .eyebrow{color:#fff}
.diff .eyebrow::before{background:rgba(255,255,255,.7)}
.diff h3{font-size:1.5rem;margin-bottom:18px}
.diff p{color:rgba(255,255,255,.92);line-height:2}
.diff .strike{position:relative;white-space:nowrap}
.diff .strike::after{content:"";position:absolute;left:-2px;right:-2px;top:54%;height:2px;background:rgba(255,255,255,.85);transform:rotate(-4deg)}
.diff .big{font-family:var(--font-display);font-weight:900;font-size:1.3rem;display:block;margin-top:20px}
.diff-heart{position:absolute;right:-30px;bottom:-30px;font-size:200px;color:rgba(255,255,255,.10);line-height:1}

/* ===========================================================
   WAITLIST
   =========================================================== */
.waitlist{padding:110px 0;background:
  radial-gradient(70% 80% at 50% 0%, var(--pink-100), transparent 70%),
  var(--paper-2);
}
.wl-card{
  max-width:760px;margin:0 auto;text-align:center;
  background:#fff;border-radius:var(--r-xl);
  padding:clamp(36px,5vw,64px);
  box-shadow:var(--sh-lg);border:1px solid var(--line);
  position:relative;overflow:hidden;
}
.wl-card .sect-title{margin:14px 0 14px}
.wl-card .lead{max-width:34em;margin:0 auto 8px}
.wl-form{display:flex;gap:12px;max-width:520px;margin:34px auto 0}
.wl-form input{
  flex:1;font-family:var(--font-body);font-size:1rem;
  padding:1rem 1.2rem;border-radius:var(--r-pill);
  border:1.6px solid var(--pink-200);background:var(--pink-50);
  color:var(--ink);outline:none;transition:border .2s, background .2s;
}
.wl-form input::placeholder{color:var(--ink-3)}
.wl-form input:focus{border-color:var(--pink-500);background:#fff}
.wl-meta{display:flex;gap:22px;justify-content:center;margin-top:26px;flex-wrap:wrap}
.wl-meta span{font-size:.84rem;color:var(--ink-2);display:flex;align-items:center;gap:.45em}
.wl-meta .tick{color:var(--pink-500);font-weight:800}
.wl-perks{
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:26px auto 0;max-width:520px;
}
.wl-perks .perk{
  display:flex;align-items:center;gap:.5em;
  font-family:var(--font-display);font-weight:700;font-size:.84rem;color:var(--pink-700);
  background:var(--pink-50);border:1px solid var(--pink-100);
  padding:.5rem 1rem;border-radius:var(--r-pill);
}
.wl-perks .perk .e{font-size:1em}
.wl-perks-lead{margin-top:24px;font-family:var(--font-display);font-weight:700;font-size:.92rem;color:var(--ink)}
.wl-count{
  display:inline-flex;align-items:center;gap:.5em;margin-top:8px;white-space:nowrap;
  font-size:.85rem;color:var(--pink-600);font-weight:700;font-family:var(--font-display);
  background:var(--pink-50);padding:.4rem 1rem;border-radius:var(--r-pill);
}
.avatars{display:flex}
.avatars i{width:24px;height:24px;border-radius:50%;border:2px solid #fff;margin-left:-8px;display:block}
.wl-success{display:none;flex-direction:column;align-items:center;gap:10px;padding:14px 0}
.wl-success.show{display:flex}
.wl-success .big-tick{width:64px;height:64px;border-radius:50%;background:var(--pink-500);color:#fff;display:grid;place-items:center;font-size:1.8rem;box-shadow:0 12px 26px rgba(75,81,206,.34)}

/* ---------- footer ---------- */
.site-foot{background:#fff;border-top:1px solid var(--line);padding:60px 0 40px}
.foot-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;align-items:flex-start}
.foot-brand{max-width:300px}
.foot-brand p{font-size:.86rem;color:var(--ink-2);margin-top:14px;line-height:1.9}
.foot-cols{display:flex;gap:64px;flex-wrap:wrap}
.foot-col h4{font-family:var(--font-display);font-size:.82rem;letter-spacing:.08em;color:var(--ink-3);margin-bottom:14px}
.foot-col a{display:block;font-size:.9rem;color:var(--ink-2);padding:5px 0;transition:color .2s}
.foot-col a:hover{color:var(--pink-600)}
.foot-bot{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.8rem;color:var(--ink-3)}

/* ===========================================================
   REVEAL (minimal motion)
   =========================================================== */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}
.reveal.d2{transition-delay:.16s}
.reveal.d3{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ===========================================================
   RESPONSIVE
   =========================================================== */
@media (max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:54px}
  .hero-copy{text-align:center}
  .hero-copy .lead{margin:0 auto}
  .hero-ctas,.hero-note{justify-content:center}
  .feat-layout{grid-template-columns:1fr;gap:48px}
  .feat-aside{order:-1;position:static}
  .screen-row{grid-template-columns:1fr;max-width:340px;margin:0 auto;gap:54px}
  .split{grid-template-columns:1fr}
}
@media (max-width:680px){
  .nav-links{display:none}
  .section{padding:72px 0}
  .wrap{padding:0 20px}
  .hero-ctas .btn{flex:1}
  .wl-form{flex-direction:column}
  .feat{grid-template-columns:48px 1fr;gap:16px;padding:20px}
  .feat .ic{width:48px;height:48px;font-size:1.3rem}
}