@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Noto+Sans+JP:wght@400;500;700&family=Noto+Serif+JP:wght@500;600;700&display=swap');

:root{
  --bg:#FAF6F0;
  --bg-soft:#FFFCF7;
  --bg-tint:#F5EFE6;
  --accent:#C8765C;
  --accent-dark:#A85D45;
  --accent-light:#E2A088;
  --accent-soft:#F5E4D4;
  --sage:#8FA078;
  --sage-soft:#E6EBDD;
  --sage-deep:#5F7355;
  --text-head:#3D2E26;
  --text-body:#5C4A40;
  --text-sub:#8A7868;
  --text-mute:#A8968A;
  --line:rgba(61,46,38,.08);
  --line-strong:rgba(61,46,38,.14);
  --radius-card:24px;
  --radius-pill:999px;
  --font-en:"Fraunces", "Noto Serif JP", serif;
  --font-jp-serif:"Noto Serif JP", "Hiragino Mincho ProN", serif;
  --font-jp-sans:"Noto Sans JP", "Hiragino Sans", sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text-body);
  font-family:var(--font-jp-sans);
  font-size:16px;
  font-weight:400;
  line-height:2.0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}

/* ===== Animations ===== */
.fade-up{opacity:0;transform:translateY(28px);transition:opacity .8s ease,transform .8s ease}
.fade-up.visible{opacity:1;transform:none}
.stagger{transition-delay:calc(var(--i,0) * .14s)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes blob{
  0%,100%{border-radius:48% 52% 64% 36%/52% 44% 56% 48%;transform:translate(0,0) rotate(0deg)}
  33%{border-radius:62% 38% 46% 54%/40% 60% 40% 60%;transform:translate(12px,-8px) rotate(8deg)}
  66%{border-radius:38% 62% 58% 42%/56% 38% 62% 44%;transform:translate(-8px,10px) rotate(-6deg)}
}

/* ===== Nav ===== */
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:64px;padding:0 32px;
  display:flex;align-items:center;justify-content:flex-end;
  background:rgba(250,246,240,.85);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:border-color .3s, background .3s;
}
nav.scrolled{border-bottom-color:var(--line)}
.nav-links{display:flex;gap:28px;list-style:none;align-items:center}
.nav-links a{font-family:var(--font-jp-sans);font-size:14px;color:var(--text-sub);text-decoration:none;transition:color .2s}
.nav-links a:hover{color:var(--accent)}
.nav-cta{
  font-size:13px!important;padding:9px 22px;
  background:var(--accent);color:#fff!important;
  border-radius:var(--radius-pill);
  transition:background .2s, transform .2s;
}
.nav-cta:hover{background:var(--accent-dark)!important;color:#fff!important;transform:translateY(-1px)}
.nav-burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;z-index:102}
.nav-burger span{display:block;width:22px;height:1.5px;background:var(--text-head);transition:transform .3s, opacity .2s}
.nav-burger.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.nav-overlay{
  position:fixed;inset:0;z-index:99;
  background:rgba(250,246,240,.98);
  backdrop-filter:blur(8px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;
  opacity:0;pointer-events:none;transition:opacity .3s;
}
.nav-overlay.open{opacity:1;pointer-events:auto}
.nav-overlay a{font-family:var(--font-jp-sans);font-size:19px;color:var(--text-head);text-decoration:none}

/* ===== Hero ===== */
.hero{
  min-height:auto;
  display:flex;align-items:center;justify-content:center;
  padding:140px 24px 100px;
  position:relative;overflow:hidden;
}
.hero-blobs{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.hero-blob{position:absolute;filter:blur(100px);opacity:.36;animation:blob 18s ease-in-out infinite}
.hero-blob-1{width:460px;height:460px;background:var(--accent-light);top:-12%;right:6%;animation-delay:0s}
.hero-blob-2{width:380px;height:380px;background:var(--sage);bottom:-8%;left:0;animation-delay:-6s}
.hero-blob-3{width:300px;height:300px;background:var(--accent);top:36%;left:38%;opacity:.22;animation-delay:-11s}
.hero-content{position:relative;text-align:center;max-width:680px}
.hero-logo{
  width:240px;height:240px;border-radius:50%;object-fit:cover;
  margin:0 auto 36px;
  animation:float 6s ease-in-out infinite;
  box-shadow:0 16px 44px rgba(200,118,92,.20);
}
.hero h1{
  font-family:var(--font-en);
  font-size:clamp(36px,6vw,56px);
  font-weight:600;line-height:1.1;letter-spacing:-.01em;
  margin-bottom:8px;color:var(--text-head);
}
.hero-sub{
  font-family:var(--font-jp-serif);
  font-size:clamp(15px,2vw,18px);
  font-weight:500;color:var(--accent-dark);
  letter-spacing:.06em;margin-bottom:32px;
}
.hero-lead{
  font-family:var(--font-jp-serif);
  font-size:clamp(20px,3vw,26px);
  font-weight:600;line-height:1.7;color:var(--text-head);
  margin-bottom:18px;
}
.hero-desc{
  font-size:16px;color:var(--text-body);line-height:2.1;
  max-width:480px;margin:0 auto;
}
.hero-cta{
  display:inline-block;margin-top:40px;
  padding:16px 40px;
  font-family:var(--font-jp-sans);
  font-size:15px;font-weight:500;
  background:var(--accent);color:#fff;
  border-radius:var(--radius-pill);
  text-decoration:none;
  transition:background .2s, transform .2s, box-shadow .2s;
  box-shadow:0 6px 20px rgba(200,118,92,.22);
}
.hero-cta:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 10px 26px rgba(200,118,92,.28)}

/* ===== Sections ===== */
section{padding:104px 24px;position:relative}
.wrap{max-width:920px;margin:0 auto}
.label{
  font-family:var(--font-en);
  font-size:12px;font-weight:500;letter-spacing:.18em;
  color:var(--accent);text-transform:uppercase;
  margin-bottom:14px;
  display:inline-flex;align-items:center;gap:10px;
}
.label::before{
  content:"";display:inline-block;width:24px;height:1px;
  background:var(--accent);opacity:.6;
}
h2{
  font-family:var(--font-jp-serif);
  font-size:clamp(24px,3.6vw,32px);
  font-weight:600;line-height:1.55;
  margin-bottom:20px;color:var(--text-head);
  letter-spacing:.01em;
}
.lead{font-size:16px;color:var(--text-body);max-width:600px;line-height:2.1}

/* ===== Concept ===== */
.concept{background:var(--bg-soft)}
.concept-text{
  font-size:16px;color:var(--text-body);
  max-width:680px;line-height:2.2;margin-bottom:44px;
}
.concept-box{
  padding:32px 36px;
  background:linear-gradient(135deg,#F5EAD9,#FAF3E8);
  border-radius:20px;
  border-left:4px solid var(--accent);
  margin-bottom:48px;
}
.concept-box p{
  font-family:var(--font-jp-serif);
  font-size:17px;font-weight:500;line-height:1.95;color:var(--text-head);
}
.concept-img{
  border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);
}
.concept-img img{width:100%;height:auto;display:block}

/* ===== Strengths ===== */
.strengths{background:var(--bg)}
.str-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:24px;margin-top:48px;
}
.str-card{
  background:var(--bg-soft);
  border-radius:var(--radius-card);
  padding:40px 28px;
  border:1px solid var(--line);
  transition:transform .35s ease, border-color .35s ease;
}
.str-card:hover{transform:translateY(-4px);border-color:var(--accent-soft)}
.str-num{
  font-family:var(--font-en);
  font-size:44px;font-weight:600;
  background:linear-gradient(135deg,var(--accent),var(--sage));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  line-height:1;margin-bottom:18px;
}
.str-card h3{
  font-family:var(--font-jp-serif);
  font-size:17px;font-weight:600;
  margin-bottom:12px;line-height:1.6;color:var(--text-head);
}
.str-card p{
  font-family:var(--font-jp-sans);
  font-size:14.5px;color:var(--text-body);line-height:1.95;
}

/* ===== Products ===== */
.products{background:var(--bg-soft)}
.prod-cards{display:flex;flex-direction:column;gap:32px;margin-top:48px}
.prod-row{
  display:grid;grid-template-columns:1fr 1fr;gap:0;align-items:stretch;
  background:var(--bg);
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  transition:border-color .3s;
}
.prod-row:hover{border-color:var(--accent-soft)}
.prod-row.reverse .prod-text{order:2}
.prod-row.reverse .prod-visual{order:1}
.prod-text{padding:44px 40px;display:flex;flex-direction:column;justify-content:center}
.prod-text h3{
  font-family:var(--font-jp-serif);
  font-size:28px;font-weight:600;
  margin-bottom:16px;color:var(--text-head);
  display:flex;align-items:baseline;gap:.4em;flex-wrap:wrap;
  line-height:1.5;
}
.prod-sub{font-size:.6em;color:var(--text-sub);font-weight:500}
.prod-text p{
  font-size:15px;color:var(--text-body);line-height:2.0;margin-bottom:18px;
}
.prod-tag{
  display:inline-block;align-self:flex-start;
  font-family:var(--font-jp-sans);
  font-size:12px;font-weight:500;
  padding:5px 14px;border-radius:var(--radius-pill);
  letter-spacing:.04em;
}
.prod-tag.beta{background:var(--accent-soft);color:var(--accent-dark)}
.prod-tag.research{background:var(--sage-soft);color:var(--sage-deep)}
.prod-link{
  display:inline-block;margin-top:16px;align-self:flex-start;
  font-size:17px;font-weight:500;
  color:var(--accent);text-decoration:none;
  transition:color .2s;
}
.prod-link:hover{color:var(--accent-dark);text-decoration:underline;text-underline-offset:4px}
.prod-visual{overflow:hidden;min-height:280px;background:var(--bg-tint)}
.prod-visual img{width:100%;height:100%;object-fit:cover;display:block}

/* ===== Future ===== */
.future{background:var(--bg)}
.future-text{
  font-size:16px;color:var(--text-body);
  max-width:680px;line-height:2.2;
}

/* ===== Contact ===== */
.contact{background:var(--bg-soft);text-align:center}
.contact .label{justify-content:center}
.contact .lead{margin:0 auto 40px}
.contact-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-main{
  display:inline-block;padding:16px 36px;
  font-family:var(--font-jp-sans);
  font-size:15px;font-weight:500;
  background:var(--accent);color:#fff;
  border-radius:var(--radius-pill);text-decoration:none;
  transition:background .2s, transform .2s, box-shadow .2s;
  box-shadow:0 6px 20px rgba(200,118,92,.18);
}
.btn-main:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 10px 26px rgba(200,118,92,.24)}
.btn-sub{
  display:inline-block;padding:16px 36px;
  font-family:var(--font-jp-sans);
  font-size:15px;
  border:1px solid var(--line-strong);
  color:var(--text-head);
  border-radius:var(--radius-pill);text-decoration:none;
  background:transparent;
  transition:border-color .2s, color .2s;
}
.btn-sub:hover{border-color:var(--accent);color:var(--accent)}
.contact-mail{margin-top:24px;font-size:13px;color:var(--text-sub)}
.contact-mail a{color:var(--text-sub);text-decoration:none}
.contact-mail a:hover{color:var(--accent)}

/* ===== Footer ===== */
footer{
  padding:36px 24px;text-align:center;
  border-top:1px solid var(--line);
  background:var(--bg);
}
footer p{font-size:12px;color:var(--text-mute);margin-bottom:6px}
footer a{color:var(--accent);text-decoration:none;font-size:12px}
footer a:hover{color:var(--accent-dark)}

/* ===== rc-back ===== */
.rc-back{
  position:fixed;top:14px;left:14px;z-index:9999;
  display:inline-flex;align-items:center;gap:.45em;
  padding:.4em .9em;
  background:rgba(61,46,38,.55);color:#fff;
  font-family:var(--font-en);
  font-size:11px;font-weight:500;letter-spacing:.04em;
  text-decoration:none;
  border-radius:var(--radius-pill);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(10px) saturate(140%);
  -webkit-backdrop-filter:blur(10px) saturate(140%);
  transition:background .2s, transform .2s, border-color .2s;
}
.rc-back:hover{background:rgba(61,46,38,.78);border-color:rgba(255,255,255,.28)}
.rc-back__arrow{font-size:13px;line-height:1;transition:transform .2s}
.rc-back:hover .rc-back__arrow{transform:translate(2px,-2px)}

/* ===== Responsive ===== */
@media (max-width:720px){
  nav{padding:0 18px;height:60px}
  .nav-links{display:none}
  .nav-burger{display:flex}
  .hero{padding:120px 20px 80px}
  .hero-logo{width:192px;height:192px;margin-bottom:28px}
  section{padding:72px 20px}
  .label{font-size:11px}
  body{font-size:15px}
  .hero-desc, .concept-text, .lead, .future-text, .str-card p{font-size:15px}
  .concept-box{padding:24px 24px}
  .concept-box p{font-size:15px}
  .str-grid{grid-template-columns:1fr;gap:20px}
  .str-card{padding:32px 24px}
  .prod-row{grid-template-columns:1fr}
  .prod-row.reverse .prod-text{order:1}
  .prod-row.reverse .prod-visual{order:2}
  .prod-text{padding:32px 24px}
  .prod-text h3{font-size:23px}
  .prod-link{font-size:16px}
  .prod-visual{min-height:200px}
  .contact-btns{flex-direction:column;align-items:stretch;max-width:320px;margin:0 auto}
  .btn-main,.btn-sub{padding:14px 28px}
}