/* KONITAG temporary landing */
:root{
  --paper:#F3F3F8;
  --ink:#1D1B46;
  --navy:#262262;
  --magenta:#9F1F63;
  --muted:#55546F;
  --night:#1A1940;
  --font:"Pretendard Variable",Pretendard,-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR",sans-serif;
}
:lang(ja){--font:"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic UI","Pretendard Variable",Pretendard,"Meiryo",sans-serif}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);line-height:1.6;-webkit-font-smoothing:antialiased;word-break:keep-all;overflow-wrap:break-word}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
:focus-visible{outline:2px solid var(--magenta);outline-offset:3px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:1rem;top:-4rem;z-index:10;background:var(--navy);color:#fff;padding:.6rem 1rem;border-radius:8px;text-decoration:none}
.skip:focus{top:1rem}

/* ---------- Hero: full screen ---------- */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;align-items:center;justify-content:center;overflow:hidden;
  padding:calc(5.5rem + env(safe-area-inset-top,0px)) 1.5rem calc(4rem + env(safe-area-inset-bottom,0px))}
.hero__body{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center}
.hero__stage{position:relative;width:min(440px,74vw);display:grid;place-items:center}
.hero__logo{position:relative;z-index:1;margin:0;width:100%;animation:logo-in 1.1s cubic-bezier(.2,.7,.2,1) both}
.hero__logo img{width:100%}

/* NFC field: concentric rings around the logo */
.field{position:absolute;left:50%;top:50%;width:300%;aspect-ratio:1;transform:translate(-50%,-50%);pointer-events:none;z-index:0;overflow:visible}
.field circle{vector-effect:non-scaling-stroke}
.field__static circle{stroke:var(--navy);stroke-opacity:.075;stroke-width:1}
.field__static circle:nth-child(1){stroke-opacity:.12}
.field__wave circle{stroke:var(--magenta);stroke-width:1.5;stroke-opacity:0;transform-box:fill-box;transform-origin:center;animation:wave 7.5s cubic-bezier(.25,.6,.35,1) infinite}
.field__wave circle:nth-child(2){animation-delay:2.5s}
.field__wave circle:nth-child(3){animation-delay:5s}

.hero__copy{position:relative;z-index:1;margin-top:clamp(2.75rem,7vh,4.5rem);max-width:34rem;animation:copy-in 1s .45s cubic-bezier(.2,.7,.2,1) both}
.hero__title{margin:0;font-size:clamp(1.5rem,1.05rem + 1.9vw,2.4rem);font-weight:700;line-height:1.32;letter-spacing:-.025em;color:var(--ink)}
.hero__sub{margin:.9rem 0 0;font-size:clamp(1rem,.95rem + .25vw,1.125rem);color:var(--muted)}
:lang(ja) .hero__title{letter-spacing:0;line-height:1.45}

/* Language switch */
.lang{position:absolute;top:calc(1.25rem + env(safe-area-inset-top,0px));right:max(1.25rem,env(safe-area-inset-right,0px));z-index:5}
.lang ul{display:flex;gap:2px;margin:0;padding:3px;list-style:none;background:rgba(255,255,255,.7);border:1px solid rgba(38,34,98,.14);border-radius:999px;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.lang a{display:flex;align-items:center;justify-content:center;min-width:44px;min-height:36px;padding:0 .8rem;border-radius:999px;font-size:.8125rem;font-weight:600;letter-spacing:.04em;color:var(--muted);text-decoration:none;transition:background-color .2s,color .2s}
.lang abbr{text-decoration:none;cursor:inherit}
.lang a:hover{color:var(--navy);background:rgba(38,34,98,.07)}
.lang a[aria-current="page"]{background:var(--navy);color:#fff}

/* ---------- Footer ---------- */
.footer{background:var(--night);color:rgba(255,255,255,.74);font-size:.875rem;line-height:1.7;padding:clamp(3rem,6vw,4.5rem) 1.5rem calc(2.5rem + env(safe-area-inset-bottom,0px))}
.footer__inner{max-width:1120px;margin:0 auto}
.footer__brand{display:flex;flex-wrap:wrap;align-items:center;gap:1rem 2rem;padding-bottom:2rem;border-bottom:1px solid rgba(255,255,255,.12)}
.footer__brand img{width:150px}
.footer__brand p{margin:0}
.footer__brand a{color:#fff;text-underline-offset:3px}
.footer address{font-style:normal}
.footer__info{display:grid;grid-template-columns:repeat(auto-fill,minmax(15rem,1fr));gap:1rem 2rem;margin:2rem 0 0}
.footer__info div{min-width:0}
.footer__info div:last-child{grid-column:1/-1}
.footer__info dt{font-size:.75rem;color:rgba(255,255,255,.55);margin-bottom:.15rem}
.footer__info dd{margin:0;color:#fff;display:flex;flex-wrap:wrap;align-items:center;gap:.5rem}
.footer__info dd a{color:#fff;text-decoration:none}
.footer__info dd a:hover{text-decoration:underline;text-underline-offset:3px}
.copy{font:inherit;font-size:.75rem;line-height:1;color:#fff;background:transparent;border:1px solid rgba(255,255,255,.3);border-radius:999px;padding:.4rem .7rem;cursor:pointer;min-height:28px}
.copy:hover{border-color:#fff}
.copy[hidden]{display:none}
.footer__notice{margin:2rem 0 0;font-size:.75rem;color:rgba(255,255,255,.55);max-width:60rem}
.footer__copy{margin:1.25rem 0 0;font-size:.75rem;color:rgba(255,255,255,.55)}

@keyframes wave{0%{transform:scale(1);stroke-opacity:.45}70%{stroke-opacity:.08}100%{transform:scale(2.55);stroke-opacity:0}}
@keyframes logo-in{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:none}}
@keyframes copy-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media (max-width:600px){
  .hero__stage{width:min(320px,76vw)}
  .field{width:340%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero__logo,.hero__copy{animation:none}
  .field__wave{display:none}
}