/* ============ Base ============ */
:root{
  --bg:#f4f5f6;
  --ink:#14161a;
  --ink-2:#4a4f57;
  --line:#dcdfe3;
  --white:#ffffff;
  --accent:#14161a;
  --pad: clamp(20px, 5vw, 80px);
  --maxw: 1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Zen Kaku Gothic New","Inter",system-ui,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
em{font-style:normal;background:linear-gradient(transparent 62%,#c9ccd1 62%)}

/* ============ Background モニョモニョ ============ */
.bg{position:fixed;inset:0;z-index:-2;background:var(--bg);overflow:hidden}
.bg__svg{width:130%;height:130%;position:absolute;top:-15%;left:-15%;opacity:.9}
.blob{transform-box:fill-box;transform-origin:center}
.b1{animation:drift1 26s ease-in-out infinite}
.b2{animation:drift2 31s ease-in-out infinite}
.b3{animation:drift3 22s ease-in-out infinite}
@keyframes drift1{0%,100%{transform:translate(0,0)}50%{transform:translate(140px,90px)}}
@keyframes drift2{0%,100%{transform:translate(0,0)}50%{transform:translate(-160px,-70px)}}
@keyframes drift3{0%,100%{transform:translate(0,0)}50%{transform:translate(80px,-120px)}}
.bg__grain{
  position:absolute;inset:0;opacity:.045;pointer-events:none;
  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='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
@media (prefers-reduced-motion:reduce){
  .blob,.bg__svg .animate{animation:none}
  .bg__svg feTurbulence animate{display:none}
}

/* ============ Header ============ */
.hdr{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--pad);
  transition:background .3s, box-shadow .3s, padding .3s;
}
.hdr.is-scrolled{
  background:rgba(244,245,246,.82);backdrop-filter:blur(12px);
  box-shadow:0 1px 0 var(--line);padding-top:12px;padding-bottom:12px;
}
.hdr__logo{display:flex;align-items:center;gap:11px;font-weight:700;letter-spacing:.02em;font-size:1.02rem;color:var(--ink)}
.logo-mark{width:22px;height:22px;flex:none;color:var(--ink)}
.hdr__nav{display:flex;align-items:center;gap:34px;font-size:.86rem;letter-spacing:.06em;font-weight:500}
.hdr__nav a{position:relative;color:var(--ink-2);transition:color .2s}
.hdr__nav a:hover{color:var(--ink)}
.hdr__nav a:not(.hdr__cta)::after{content:"";position:absolute;left:0;bottom:-5px;width:0;height:1px;background:var(--ink);transition:width .25s}
.hdr__nav a:not(.hdr__cta):hover::after{width:100%}
.hdr__cta{border:1px solid var(--ink);color:var(--ink);padding:8px 18px;border-radius:40px;transition:background .2s,color .2s}
.hdr__cta:hover{background:var(--ink);color:var(--white)}
.hdr__burger{display:none;flex-direction:column;gap:6px;background:none;border:0;cursor:pointer;padding:6px}
.hdr__burger span{width:26px;height:2px;background:var(--ink);transition:.3s}

/* ============ Hero ============ */
.hero{
  min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding:120px var(--pad) 80px;max-width:var(--maxw);margin:0 auto;position:relative;
}
.hero__eyebrow{font-family:"Inter";font-size:.8rem;letter-spacing:.28em;color:var(--ink-2);margin-bottom:28px;font-weight:500}
.hero__title{
  font-family:"Inter","Zen Kaku Gothic New",sans-serif;
  font-weight:600;line-height:1.02;letter-spacing:-.02em;
  font-size:clamp(2.8rem,9vw,7.4rem);
}
.hero__rotator{display:inline-flex;align-items:baseline}
.hero__word{display:inline-block;min-width:1ch;transition:opacity .32s, transform .32s, filter .32s}
.hero__word.is-out{opacity:0;transform:translateY(.32em);filter:blur(6px)}
.hero__dot{color:var(--ink)}
.hero__lead{margin-top:34px;max-width:42em;color:var(--ink-2);font-size:clamp(.95rem,1.5vw,1.08rem)}
.hero__actions{display:flex;gap:14px;margin-top:42px;flex-wrap:wrap}
.hero__scroll{position:absolute;bottom:34px;left:var(--pad);display:flex;align-items:center;gap:12px;font-family:"Inter";font-size:.72rem;letter-spacing:.2em;color:var(--ink-2)}
.hero__scroll span{width:34px;height:1px;background:var(--ink-2);position:relative;overflow:hidden}
.hero__scroll span::after{content:"";position:absolute;inset:0;background:var(--ink);animation:scrollline 2.2s ease-in-out infinite}
@keyframes scrollline{0%{transform:translateX(-100%)}60%,100%{transform:translateX(100%)}}

/* ============ Buttons ============ */
.btn{display:inline-flex;align-items:center;gap:8px;font-size:.9rem;font-weight:500;letter-spacing:.04em;padding:13px 28px;border-radius:44px;transition:.25s;border:1px solid transparent}
.btn--solid{background:var(--ink);color:var(--white)}
.btn--solid:hover{background:#2b2f36;transform:translateY(-2px)}
.btn--ghost{border-color:var(--ink);color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--white)}
.btn--lg{padding:17px 40px;font-size:1rem;margin-top:34px}

/* ============ Sections ============ */
.sec{max-width:var(--maxw);margin:0 auto;padding:clamp(80px,12vh,150px) var(--pad)}
.sec__num,.stmt__num{font-family:"Inter";font-size:.78rem;letter-spacing:.18em;color:var(--ink-2);font-weight:500}
.sec__head{margin-bottom:60px}
.sec__title{font-size:clamp(1.8rem,4.5vw,3rem);font-weight:700;letter-spacing:-.01em;margin-top:14px;line-height:1.25}

/* Statement */
.stmt{max-width:var(--maxw);margin:0 auto;padding:clamp(70px,9vh,120px) var(--pad)}
.stmt__body{font-size:clamp(1.3rem,3.4vw,2.3rem);font-weight:500;line-height:1.7;margin-top:24px;letter-spacing:.01em}
@media (max-width:640px){.stmt__body{font-size:clamp(.8rem,4.05vw,1.3rem)}}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media (min-width:1081px){
  #products .cards{grid-template-columns:repeat(3,1fr)}
  #service .cards{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1080px){.cards{grid-template-columns:repeat(2,1fr)}}
.card{
  background:rgba(255,255,255,.6);backdrop-filter:blur(6px);
  border:1px solid var(--line);border-radius:18px;padding:38px 32px 34px;
  display:flex;flex-direction:column;transition:transform .3s, box-shadow .3s, background .3s;
}
.card:hover{transform:translateY(-6px);box-shadow:0 22px 50px -28px rgba(20,22,26,.4);background:rgba(255,255,255,.85)}
.card__no{font-family:"Inter";font-size:.8rem;letter-spacing:.2em;color:var(--ink-2)}
.card__title{font-size:1.32rem;font-weight:700;line-height:1.4;margin:18px 0 16px}
.card__text{font-size:.92rem;color:var(--ink-2);flex:1}
.card__tags{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.card__tags li{font-size:.74rem;color:var(--ink-2);border:1px solid var(--line);border-radius:30px;padding:4px 12px;background:var(--white)}
.card__link{display:inline-flex;align-items:center;gap:7px;margin-top:20px;font-family:"Inter";font-size:.78rem;letter-spacing:.06em;color:var(--ink)}
.card__link::after{content:"↗";transition:transform .25s}
.card:hover .card__link::after{transform:translate(2px,-2px)}

/* About */
.about__grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(30px,6vw,90px);align-items:start}
.about__body p{color:var(--ink-2);font-size:1rem}
.about__body p+p{margin-top:22px}
.about__body strong{color:var(--ink);font-weight:700}

/* Company info */
.info{border-top:1px solid var(--line)}
.info__row{display:grid;grid-template-columns:180px 1fr;gap:20px;padding:24px 4px;border-bottom:1px solid var(--line)}
.info__row dt{font-weight:700;font-size:.92rem}
.info__row dd{color:var(--ink-2);font-size:.95rem}

/* Contact */
.sec--contact{text-align:center}
.contact__title{font-size:clamp(2rem,6vw,3.6rem);font-weight:700;line-height:1.3;margin:18px 0 18px;letter-spacing:-.01em}
.contact__text{color:var(--ink-2)}

/* Contact form */
.cform{max-width:640px;margin:38px auto 0;text-align:left}
.cform__row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.cform__field{display:block;margin-bottom:18px}
.cform__label{display:block;font-size:.85rem;font-weight:500;color:var(--ink-2);margin-bottom:8px;letter-spacing:.04em}
.cform input,.cform textarea{
  width:100%;padding:13px 16px;border:1px solid var(--line);border-radius:10px;
  background:var(--white);color:var(--ink);font:inherit;font-size:.95rem;
  transition:border-color .2s,box-shadow .2s;
}
.cform input:focus,.cform textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(20,22,26,.08)}
.cform textarea{resize:vertical;min-height:130px}
.cform__foot{text-align:center;margin-top:6px}
.cform__status{margin-top:14px;font-size:.9rem;color:var(--ink-2);min-height:1.4em}
.cform__status.is-ok{color:#1a7f4e}
.cform__status.is-err{color:#b3261e}
.cform button[disabled]{opacity:.55;cursor:not-allowed}
.cform__hp{position:absolute !important;left:-9999px !important;width:1px;height:1px;overflow:hidden;opacity:0}
@media (max-width:640px){.cform__row{grid-template-columns:1fr}}

/* Footer */
.ftr{border-top:1px solid var(--line);padding:42px var(--pad);display:flex;justify-content:space-between;align-items:center;gap:18px;max-width:var(--maxw);margin:0 auto;flex-wrap:wrap}
.ftr__logo{display:flex;align-items:center;gap:11px;font-weight:700;letter-spacing:.02em;color:var(--ink)}
.ftr__logo .logo-mark{width:20px;height:20px}
.ftr__copy{font-family:"Inter";font-size:.8rem;color:var(--ink-2);letter-spacing:.04em}

/* ============ Reveal ============ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:none}

/* ============ Responsive ============ */
@media (max-width:860px){
  .hdr__nav{
    position:fixed;inset:0 0 0 auto;width:min(78vw,320px);background:var(--bg);
    flex-direction:column;justify-content:center;align-items:flex-start;gap:26px;
    padding:0 40px;transform:translateX(100%);transition:transform .4s cubic-bezier(.2,.7,.2,1);
    box-shadow:-20px 0 60px -30px rgba(0,0,0,.4);font-size:1.05rem;
  }
  .hdr__nav.is-open{transform:none}
  .hdr__burger{display:flex;z-index:60}
  .hdr.is-menu .hdr__burger span:first-child{transform:translateY(4px) rotate(45deg)}
  .hdr.is-menu .hdr__burger span:last-child{transform:translateY(-4px) rotate(-45deg)}
  .cards{grid-template-columns:1fr}
  .about__grid{grid-template-columns:1fr}
  .info__row{grid-template-columns:110px 1fr;gap:14px}
}