/* ============================================================
   Fusion — Manufacturing AI Platform
   AIWA System Solutions Co., Ltd.
   Fresh "fusion gradient" identity (Machine × Human × AI)
   ============================================================ */

/* ---------- Tokens ---------- */
:root{
  --ink:        #0a0a12;
  --ink-2:      #10101c;
  --panel:      #15162400;
  --surface:    rgba(255,255,255,.035);
  --surface-2:  rgba(255,255,255,.06);
  --line:       rgba(255,255,255,.10);
  --line-2:     rgba(255,255,255,.16);

  --text:       #eef0f7;
  --muted:      #a3a8bd;
  --muted-2:    #7c8198;

  /* the three forces */
  --c-machine:  #36d6ff;  /* machine = cyan  */
  --c-human:    #ff8a4c;  /* human   = amber */
  --c-ai:       #b14dff;  /* ai      = violet*/
  --c-fusion:   #e0408f;  /* fusion  = magenta core */
  --c-orange:   #ff6a13;  /* Autodesk Fusion accent  */

  --grad-fusion: linear-gradient(100deg,#ff8a4c 0%,#e0408f 42%,#7a5cff 70%,#36d6ff 100%);
  --grad-soft:   linear-gradient(100deg,#ff8a4c,#e0408f,#7a5cff,#36d6ff);

  --radius:     18px;
  --radius-sm:  12px;
  --maxw:       1180px;
  --pad:        clamp(20px,5vw,40px);

  --font-jp:  "Noto Sans JP","Inter",system-ui,sans-serif;
  --font-en:  "Inter","Noto Sans JP",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,monospace;

  --ease: cubic-bezier(.2,.7,.2,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  font-family:var(--font-jp);
  background:var(--ink);
  color:var(--text);
  line-height:1.8;
  font-size:16px;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,svg,iframe{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ line-height:1.3; font-weight:800; letter-spacing:.01em; }
::selection{ background:rgba(224,64,143,.35); color:#fff; }

/* page-wide aurora background */
body::before{
  content:""; position:fixed; inset:0; z-index:-2; pointer-events:none;
  background:
    radial-gradient(60vw 50vh at 12% -5%,rgba(255,138,76,.10),transparent 60%),
    radial-gradient(55vw 50vh at 92% 8%,rgba(54,214,255,.10),transparent 60%),
    radial-gradient(70vw 60vh at 50% 110%,rgba(177,77,255,.12),transparent 60%);
}
body::after{
  content:""; position:fixed; inset:0; z-index:-1; pointer-events:none; opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(120vw 120vh at 50% 0%,#000,transparent 80%);
          mask-image:radial-gradient(120vw 120vh at 50% 0%,#000,transparent 80%);
}

.container{ width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:var(--pad); }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:.5em;
  font-family:var(--font-jp); font-weight:700; font-size:.98rem;
  padding:.92em 1.6em; border-radius:999px; cursor:pointer;
  border:1px solid transparent; transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s;
  white-space:nowrap;
}
.btn-primary{
  color:#1a0a14; background:var(--grad-fusion); background-size:160% 160%;
  box-shadow:0 10px 30px -10px rgba(224,64,143,.6);
  font-weight:800;
}
.btn-primary:hover{ transform:translateY(-2px); background-position:100% 0; box-shadow:0 16px 40px -12px rgba(224,64,143,.7); }
.btn-ghost{ color:var(--text); border-color:var(--line-2); background:var(--surface); }
.btn-ghost:hover{ transform:translateY(-2px); border-color:rgba(255,255,255,.4); background:var(--surface-2); }
.btn-block{ width:100%; justify-content:center; }

/* gradient text helper */
.grad{
  background:var(--grad-fusion); -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent; color:transparent;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:60;
  backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  background:rgba(10,10,18,.55);
  border-bottom:1px solid transparent;
  transition:background .3s,border-color .3s;
}
.site-header.scrolled{ background:rgba(10,10,18,.82); border-bottom-color:var(--line); }
.header-inner{ display:flex; align-items:center; justify-content:space-between; height:68px; gap:1rem; }
.brand{ display:inline-flex; align-items:center; gap:.55rem; font-weight:900; }
.brand-logo{ height:30px; width:auto; display:block; }
.brand-mark{ display:inline-flex; }
.brand-text{ font-family:var(--font-en); font-size:1.35rem; letter-spacing:.02em; }
.brand-text{
  background:var(--grad-fusion); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
}
.site-nav{ display:flex; align-items:center; gap:.92rem; }
.site-nav a{ font-size:.86rem; color:var(--muted); font-weight:500; transition:color .2s; white-space:nowrap; }
.site-nav a:hover{ color:var(--c-orange); }
.nav-cta{
  color:#1a0a14 !important; background:var(--grad-fusion);
  padding:.55em 1.1em; border-radius:999px; font-weight:800 !important;
  box-shadow:0 8px 22px -10px rgba(224,64,143,.6);
}
.nav-cta:hover{ transform:translateY(-1px); }
.nav-toggle{ display:none; background:none; border:0; width:42px; height:42px; cursor:pointer; flex-direction:column; gap:5px; align-items:center; justify-content:center; }
.nav-toggle span{ width:24px; height:2px; background:var(--text); border-radius:2px; transition:transform .3s,opacity .3s; }
.nav-toggle.open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* ---------- Section primitives ---------- */
.section{ padding:clamp(64px,9vw,120px) 0; position:relative; }
.section-eyebrow{
  font-family:var(--font-mono); font-size:.78rem; letter-spacing:.18em; text-transform:uppercase;
  color:var(--c-fusion); margin:0 0 .9rem; font-weight:600;
}
.section-title{ font-size:clamp(1.7rem,4.4vw,2.9rem); margin:0 0 1rem; }
.section-sub{ color:var(--muted); max-width:64ch; margin:0 0 2.6rem; font-size:1.02rem; }
.sp-br{ display:none; }

/* ---------- Hero ---------- */
.hero{ position:relative; padding:clamp(48px,8vw,96px) 0 0; overflow:hidden; }
.hero-aurora{
  position:absolute; inset:-20% -10% auto -10%; height:120%; z-index:0; pointer-events:none;
  background:
    radial-gradient(40vw 40vw at 20% 30%,rgba(255,138,76,.22),transparent 60%),
    radial-gradient(38vw 38vw at 80% 20%,rgba(54,214,255,.20),transparent 60%),
    radial-gradient(50vw 40vw at 55% 75%,rgba(177,77,255,.22),transparent 60%);
  filter:blur(8px); animation:auroraFloat 16s ease-in-out infinite alternate;
}
@keyframes auroraFloat{ from{ transform:translate3d(0,0,0) scale(1);} to{ transform:translate3d(-3%,2%,0) scale(1.06);} }
.hero-inner{ position:relative; z-index:1; display:grid; grid-template-columns:1.05fr .95fr; gap:clamp(24px,4vw,56px); align-items:center; padding-block:clamp(20px,4vw,40px) clamp(40px,6vw,72px); }
.hero-eyebrow{ font-family:var(--font-mono); font-size:.8rem; letter-spacing:.2em; color:var(--muted); margin:0 0 1.1rem; }
.hero-title{ font-size:clamp(2.1rem,6.2vw,4rem); line-height:1.18; margin:0 0 1.3rem; letter-spacing:.005em; }
.hero-lead{ color:var(--muted); font-size:clamp(1rem,1.5vw,1.12rem); margin:0 0 2rem; max-width:46ch; }
.hero-lead strong{ color:var(--text); font-weight:700; }
.hero-cta{ display:flex; flex-wrap:wrap; gap:.9rem; margin-bottom:2.6rem; }
.hero-stats{ list-style:none; display:flex; gap:clamp(18px,3vw,40px); padding:0; margin:0; flex-wrap:wrap; }
.hero-stats li{ display:flex; flex-direction:column; gap:.2rem; }
.stat-num{ font-family:var(--font-en); font-weight:900; font-size:2rem; line-height:1; background:var(--grad-fusion); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.stat-num small{ font-size:.9rem; -webkit-text-fill-color:var(--muted); }
.stat-label{ font-size:.76rem; color:var(--muted-2); line-height:1.4; }

/* hero orbital visual */
.hero-visual{ display:flex; align-items:center; justify-content:center; min-height:340px; }
.fusion-orbit{
  position:relative; width:min(420px,84vw); aspect-ratio:1; display:flex; align-items:center; justify-content:center;
}
.fusion-orbit .ring{
  position:absolute; inset:0; margin:auto; border-radius:50%; border:1px solid var(--line);
}
.ring-1{ width:100%; height:100%; animation:spin 26s linear infinite; }
.ring-2{ width:70%;  height:70%;  border-color:rgba(255,255,255,.14); animation:spin 18s linear infinite reverse; }
.ring-3{ width:42%;  height:42%;  border-style:dashed; border-color:rgba(255,255,255,.18); animation:spin 12s linear infinite; }
@keyframes spin{ to{ transform:rotate(360deg);} }

.fusion-orbit .core{
  position:relative; z-index:3; width:36%; aspect-ratio:1; border-radius:50%;
  background:radial-gradient(circle at 50% 38%, #201a38, #0b0913 80%);
  border:2px solid rgba(177,77,255,.5);
  display:flex; align-items:center; justify-content:center; text-align:center;
  box-shadow:0 0 60px -8px rgba(224,64,143,.6),inset 0 0 28px rgba(177,77,255,.28);
  animation:corePulse 5s ease-in-out infinite;
}
.core-label{ font-family:var(--font-en); font-weight:900; font-size:clamp(.95rem,2.4vw,1.3rem); color:#180812; letter-spacing:.02em; }
.core-icon{ width:60%; height:auto; filter:drop-shadow(0 4px 12px rgba(0,0,0,.5)); }
@keyframes corePulse{ 0%,100%{ box-shadow:0 0 60px -8px rgba(224,64,143,.5),inset 0 0 28px rgba(177,77,255,.28);} 50%{ box-shadow:0 0 90px 0 rgba(224,64,143,.8),inset 0 0 28px rgba(177,77,255,.4);} }
@keyframes gradShift{ 0%,100%{ background-position:0 0;} 50%{ background-position:100% 100%;} }

.fusion-orbit .node{
  position:absolute; z-index:4; width:78px; height:78px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-weight:800; font-size:.92rem;
  background:rgba(16,16,28,.85); border:1.5px solid; backdrop-filter:blur(6px);
  animation:nodeFloat 6s ease-in-out infinite;
}
.node span{ position:relative; z-index:1; }
.node-machine{ top:4%;   left:50%; transform:translateX(-50%); border-color:var(--c-machine); color:var(--c-machine); box-shadow:0 0 30px -6px var(--c-machine); }
.node-human{   bottom:10%; left:8%;  border-color:var(--c-human);   color:var(--c-human);   box-shadow:0 0 30px -6px var(--c-human); animation-delay:-2s; }
.node-ai{      bottom:10%; right:8%; border-color:var(--c-ai);      color:var(--c-ai);      box-shadow:0 0 30px -6px var(--c-ai); animation-delay:-4s; }
@keyframes nodeFloat{ 0%,100%{ transform:translateY(0) translateX(var(--tx,0));} 50%{ transform:translateY(-8px) translateX(var(--tx,0));} }
.node-machine{ --tx:-50%; }

/* hero ticker */
.hero-ticker{ position:relative; z-index:1; border-top:1px solid var(--line); border-bottom:1px solid var(--line); overflow:hidden; background:rgba(255,255,255,.02); }
.ticker-track{ display:inline-flex; gap:1.4rem; align-items:center; white-space:nowrap; padding:.85rem 0; font-family:var(--font-mono); font-size:.8rem; letter-spacing:.12em; color:var(--muted); animation:ticker 32s linear infinite; }
.ticker-track span:nth-child(even){ color:var(--c-fusion); }
@keyframes ticker{ from{ transform:translateX(0);} to{ transform:translateX(-50%);} }

/* ---------- Hero statement (特大コピー) ---------- */
.hero-statement{ padding:clamp(44px,8vw,96px) 0; text-align:center; position:relative; overflow:hidden; border-bottom:1px solid var(--line); background:linear-gradient(180deg,rgba(177,77,255,.07),rgba(54,214,255,.03) 60%,transparent); }
.hero-statement::after{ content:""; position:absolute; inset:auto 0 -60% 0; height:120%; background:radial-gradient(60% 60% at 50% 100%,rgba(224,64,143,.14),transparent 70%); pointer-events:none; }
.hero-statement-eyebrow{ position:relative; z-index:1; font-family:var(--font-mono); font-size:.78rem; letter-spacing:.22em; color:var(--c-orange); margin:0 0 1.1rem; }
.hero-statement-text{ position:relative; z-index:1; font-size:clamp(1.55rem,5vw,3.4rem); font-weight:900; line-height:1.32; letter-spacing:.01em; margin:0; }

/* ---------- Concept ---------- */
.triad{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(14px,2vw,22px); margin-bottom:clamp(32px,5vw,52px); }
.triad-card{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:clamp(22px,3vw,30px); position:relative; overflow:hidden; }
.triad-card::before{ content:""; position:absolute; inset:0 0 auto 0; height:3px; }
.triad-machine::before{ background:linear-gradient(90deg,var(--c-machine),transparent); }
.triad-human::before{ background:linear-gradient(90deg,var(--c-human),transparent); }
.triad-ai::before{ background:linear-gradient(90deg,var(--c-ai),transparent); }
.triad-icon{ display:inline-flex; margin-bottom:1rem; }
.triad-machine .triad-icon{ color:var(--c-machine); }
.triad-human .triad-icon{ color:var(--c-human); }
.triad-ai .triad-icon{ color:var(--c-ai); }
.triad-card h3{ font-size:1.3rem; margin:0 0 .6rem; }
.triad-card p{ color:var(--muted); font-size:.96rem; margin:0; }

.fusion-statement{ text-align:center; border:1px solid var(--line); border-radius:var(--radius); padding:clamp(28px,5vw,48px); background:var(--surface); position:relative; overflow:hidden; }
.fusion-statement::after{ content:""; position:absolute; inset:auto -20% -60% -20%; height:120%; background:radial-gradient(50% 60% at 50% 100%,rgba(224,64,143,.18),transparent 70%); pointer-events:none; }
.fusion-statement>p:first-child{ color:var(--muted); font-size:1.05rem; margin:0 0 1.4rem; }
.fusion-equation{ display:inline-flex; align-items:center; gap:clamp(.5rem,2vw,1.2rem); flex-wrap:wrap; justify-content:center; margin:0; font-weight:900; }
.eq-term{ font-size:clamp(1.2rem,3vw,1.8rem); }
.eq-op{ font-family:var(--font-en); font-size:clamp(1.1rem,2.6vw,1.6rem); color:var(--muted-2); }
.eq-eq{ color:var(--text); }
.eq-result{ font-family:var(--font-en); font-size:clamp(1.8rem,5vw,3rem); }

/* ---------- Why ---------- */
.why-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:clamp(14px,2vw,22px); }
.why-card{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:clamp(22px,3vw,32px); position:relative; transition:border-color .3s,transform .3s; }
.why-card:hover{ border-color:var(--line-2); transform:translateY(-3px); }
.why-no{ font-family:var(--font-mono); font-size:.85rem; color:var(--c-fusion); letter-spacing:.1em; }
.why-card h3{ font-size:1.18rem; margin:.5rem 0 .7rem; }
.why-card p{ color:var(--muted); font-size:.95rem; margin:0 0 .8rem; }
.why-ans{ color:var(--text) !important; padding-top:.8rem; border-top:1px dashed var(--line-2); margin-bottom:0 !important; }
.why-ans strong{ color:var(--c-fusion); }

/* ---------- Capabilities ---------- */
.cap-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:clamp(14px,2vw,22px); }
.cap-card{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:clamp(24px,3.2vw,36px); transition:transform .3s,border-color .3s,background .3s; position:relative; overflow:hidden; }
.cap-card:hover{ transform:translateY(-4px); border-color:var(--line-2); background:var(--surface-2); }
.cap-card--accent{ border-color:rgba(224,64,143,.4); background:linear-gradient(160deg,rgba(224,64,143,.10),var(--surface)); }
.cap-tag{ font-family:var(--font-mono); font-size:.75rem; letter-spacing:.12em; color:var(--c-fusion); }
.cap-card h3{ font-size:1.32rem; margin:.7rem 0 .8rem; }
.cap-card p{ color:var(--muted); margin:0; font-size:.97rem; }
#cam .cap-tag{ color:var(--c-orange); }
#cam .cap-card--accent{ border-color:rgba(255,106,19,.4); background:linear-gradient(160deg,rgba(255,106,19,.10),var(--surface)); }

/* ---------- How ---------- */
.flow{ display:grid; grid-template-columns:minmax(160px,1fr) 70px auto 50px minmax(160px,1fr); align-items:center; gap:clamp(6px,1.4vw,16px); background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:clamp(20px,3vw,34px); margin-bottom:2rem; }
.flow-inputs{ display:flex; flex-direction:column; gap:.7rem; }
.flow-chip{ background:rgba(16,16,28,.7); border:1px solid var(--line-2); border-radius:var(--radius-sm); padding:.7rem 1rem; font-weight:700; font-size:.95rem; display:flex; flex-direction:column; line-height:1.4; border-left-width:3px; }
.flow-chip small{ font-weight:400; color:var(--muted-2); font-size:.74rem; }
.flow-chip--machine{ border-left-color:var(--c-machine); }
.flow-chip--human{ border-left-color:var(--c-human); }
.flow-chip--ai{ border-left-color:var(--c-ai); }
.flow-merge svg{ width:100%; height:200px; }
.flow-core{ display:flex; justify-content:center; }
.flow-engine{ width:clamp(110px,14vw,150px); aspect-ratio:1; border-radius:50%; background:var(--grad-fusion); background-size:180% 180%; display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; color:#180812; box-shadow:0 0 50px -10px rgba(224,64,143,.7); animation:gradShift 8s ease infinite; padding:.5rem; }
.engine-label{ font-family:var(--font-en); font-weight:900; font-size:clamp(.85rem,1.6vw,1.05rem); }
.engine-sub{ font-size:.68rem; font-weight:700; opacity:.8; }
.flow-arrow-r{ text-align:center; color:var(--muted-2); font-size:1.4rem; }
.flow-outputs{ display:flex; flex-direction:column; gap:.7rem; }
.flow-out{ background:rgba(16,16,28,.7); border:1px solid var(--line-2); border-radius:var(--radius-sm); padding:.7rem 1rem; font-weight:700; font-size:.95rem; display:flex; flex-direction:column; line-height:1.4; }
.flow-out small{ font-weight:400; color:var(--muted-2); font-size:.74rem; }
.how-notes{ list-style:none; padding:0; margin:0; display:grid; grid-template-columns:repeat(3,1fr); gap:1rem; }
.how-notes li{ color:var(--muted); font-size:.92rem; padding-left:1.1rem; position:relative; }
.how-notes li::before{ content:"◆"; position:absolute; left:0; color:var(--c-fusion); font-size:.7rem; top:.45em; }
.how-notes strong{ color:var(--text); }

/* ---------- Usecase ---------- */
.usecase-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(14px,2vw,20px); }
.use-card{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:clamp(20px,2.6vw,28px); transition:transform .3s,border-color .3s; }
.use-card:hover{ transform:translateY(-3px); border-color:var(--line-2); }
.use-card h3{ font-size:1.08rem; margin:0 0 .6rem; }
.use-card h3::before{ content:""; display:inline-block; width:22px; height:3px; border-radius:3px; background:var(--grad-fusion); margin-right:.5rem; vertical-align:middle; }
.use-card p{ color:var(--muted); font-size:.93rem; margin:0; }

/* ---------- Distinction ---------- */
.dist-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:clamp(14px,2vw,20px); }
.dist-card{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:clamp(22px,2.8vw,30px); display:flex; flex-direction:column; }
.dist-badge{ align-self:flex-start; font-size:.72rem; font-weight:700; letter-spacing:.04em; color:var(--c-fusion); border:1px solid rgba(224,64,143,.4); border-radius:999px; padding:.25em .8em; margin-bottom:1rem; }
.dist-card h3{ font-size:1.16rem; margin:0 0 .7rem; }
.dist-card p{ color:var(--muted); font-size:.92rem; margin:0; }
.dist-card--cta{ background:linear-gradient(160deg,rgba(177,77,255,.14),rgba(54,214,255,.06)); border-color:var(--line-2); justify-content:space-between; }
.dist-link{ margin-top:1.2rem; font-weight:800; color:var(--text); }
.dist-link:hover{ color:var(--c-fusion); }

/* ---------- FAQ ---------- */
.faq-list{ display:flex; flex-direction:column; gap:.8rem; max-width:880px; }
.faq-item{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius-sm); overflow:hidden; transition:border-color .3s; }
.faq-item[open]{ border-color:var(--line-2); }
.faq-item summary{ cursor:pointer; padding:1.1rem 1.3rem; font-weight:700; font-size:1rem; list-style:none; display:flex; align-items:center; gap:.8rem; }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::before{ content:"+"; flex:0 0 auto; width:1.4em; height:1.4em; border-radius:50%; background:var(--surface-2); color:var(--c-fusion); display:inline-flex; align-items:center; justify-content:center; font-family:var(--font-en); font-weight:700; transition:transform .3s; }
.faq-item[open] summary::before{ content:"−"; transform:rotate(180deg); }
.faq-answer{ padding:0 1.3rem 1.2rem 3.5rem; color:var(--muted); font-size:.95rem; }

/* ---------- Contact ---------- */
.contact{ position:relative; }
.contact-inner{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(28px,4vw,56px); align-items:start; }
.contact-title{ font-size:clamp(1.7rem,4vw,2.6rem); margin:0 0 1.1rem; }
.contact-lead{ color:var(--muted); margin:0 0 1.6rem; }
.contact-points{ list-style:none; padding:0; margin:0; display:flex; flex-direction:column; gap:.7rem; }
.contact-points li{ color:var(--text); font-weight:600; font-size:.96rem; }
.contact-form{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:clamp(24px,3vw,36px); }
.form-title{ font-size:1.2rem; margin:0 0 1.4rem; }
.form-row{ margin-bottom:1.1rem; display:flex; flex-direction:column; }
.form-grid2{ display:grid; grid-template-columns:1fr 1fr; gap:1rem; }
.form-row label{ font-size:.86rem; font-weight:600; margin-bottom:.4rem; color:var(--text); display:flex; align-items:center; gap:.5rem; }
.req{ font-size:.68rem; font-weight:700; color:#1a0a14; background:var(--grad-fusion); padding:.1em .5em; border-radius:4px; }
.contact-form input,.contact-form select,.contact-form textarea{
  width:100%; font-family:var(--font-jp); font-size:.96rem; color:var(--text);
  background:rgba(10,10,18,.6); border:1px solid var(--line-2); border-radius:var(--radius-sm);
  padding:.78em .95em; transition:border-color .2s,box-shadow .2s; resize:vertical;
}
.contact-form input::placeholder,.contact-form textarea::placeholder{ color:var(--muted-2); }
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{
  outline:none; border-color:var(--c-fusion); box-shadow:0 0 0 3px rgba(224,64,143,.18);
}
.contact-form .invalid{ border-color:#ff5a5a; box-shadow:0 0 0 3px rgba(255,90,90,.16); }
.hp-field{ position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }
.form-note{ margin:.9rem 0 0; font-size:.9rem; min-height:1.2em; }
.form-note.ok{ color:#46e0a0; }
.form-note.err{ color:#ff7a7a; }

/* ---------- Company ---------- */
.company-grid{ display:grid; grid-template-columns:1.1fr .9fr; gap:clamp(24px,3vw,44px); align-items:start; }
.company-table{ margin:0; }
.company-row{ display:grid; grid-template-columns:130px 1fr; gap:1rem; padding:.85rem 0; border-bottom:1px solid var(--line); }
.company-row dt{ font-weight:700; color:var(--muted); font-size:.9rem; }
.company-row dd{ margin:0; font-size:.95rem; }
.company-en{ color:var(--muted-2); font-size:.82rem; font-family:var(--font-en); }
.company-row a{ color:var(--c-machine); }
.company-row a:hover{ text-decoration:underline; }
.company-map iframe{ width:100%; height:320px; border:1px solid var(--line); border-radius:var(--radius); filter:grayscale(.2) contrast(1.05); }
.company-map-link{ display:inline-block; margin-top:.8rem; color:var(--c-fusion); font-weight:700; font-size:.9rem; }

/* ---------- Footer ---------- */
.site-footer{ border-top:1px solid var(--line); padding:clamp(48px,6vw,72px) 0 2rem; background:rgba(0,0,0,.25); }
.footer-inner{ display:grid; grid-template-columns:1.3fr 2fr; gap:clamp(28px,4vw,56px); }
.footer-brand .brand-text{ font-size:1.5rem; }
.footer-tagline{ color:var(--muted); font-size:.92rem; margin:.7rem 0 1.2rem; font-family:var(--font-en); }
.footer-company{ font-style:normal; color:var(--muted-2); font-size:.84rem; line-height:1.9; }
.footer-nav{ display:grid; grid-template-columns:repeat(3,1fr); gap:1.4rem; }
.footer-nav h4{ font-size:.78rem; letter-spacing:.1em; text-transform:uppercase; color:var(--muted-2); margin:0 0 .9rem; }
.footer-nav a{ display:block; color:var(--muted); font-size:.9rem; padding:.28rem 0; transition:color .2s; }
.footer-nav a:hover{ color:var(--text); }
.footer-bottom{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:.8rem; margin-top:clamp(32px,4vw,48px); padding-top:1.6rem; border-top:1px solid var(--line); }
.footer-bottom p{ margin:0; color:var(--muted-2); font-size:.8rem; }
.footer-mono{ font-family:var(--font-mono); letter-spacing:.06em; }

/* ---------- Fusion × Claude band ---------- */
.claude-band{
  margin-top:clamp(20px,3vw,34px);
  display:grid; grid-template-columns:auto 1fr; gap:clamp(18px,3vw,32px); align-items:center;
  padding:clamp(24px,3.4vw,42px); border-radius:var(--radius); position:relative; overflow:hidden;
  background:linear-gradient(120deg,rgba(177,77,255,.16),rgba(54,214,255,.10));
  border:1px solid rgba(177,77,255,.40);
  box-shadow:0 0 60px -24px rgba(177,77,255,.6);
}
.claude-band-badge{
  width:clamp(64px,9vw,88px); aspect-ratio:1; border-radius:22px;
  background:var(--grad-fusion); display:flex; align-items:center; justify-content:center;
  font-size:2.1rem; color:#180812; box-shadow:0 0 40px -8px rgba(177,77,255,.7);
  animation:gradShift 8s ease infinite; background-size:180% 180%;
}
.claude-band h3{ font-size:clamp(1.3rem,2.8vw,1.9rem); margin:.5rem 0 .7rem; }
.claude-band p{ color:var(--text); opacity:.94; margin:0 0 1rem; font-size:1rem; }
.claude-band .dist-link{ margin-top:0; }
@media (max-width:680px){ .claude-band{ grid-template-columns:1fr; } }

/* ---------- Events / お知らせ ---------- */
.events-list{ display:grid; grid-template-columns:repeat(2,1fr); gap:clamp(14px,2vw,20px); }
.event-card{ display:flex; flex-direction:column; gap:.7rem; background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:clamp(20px,2.8vw,28px); transition:transform .3s,border-color .3s; }
.event-card:hover{ transform:translateY(-3px); border-color:var(--line-2); }
.event-meta{ display:flex; flex-wrap:wrap; gap:.5rem; align-items:center; }
.event-status{ font-size:.72rem; font-weight:700; padding:.2em .75em; border-radius:999px; color:#1a0a14; background:var(--grad-fusion); }
.event-format{ font-size:.72rem; font-weight:700; padding:.2em .75em; border-radius:999px; border:1px solid var(--line-2); color:var(--muted); }
.event-date{ font-family:var(--font-mono); font-size:.8rem; color:var(--c-machine); margin-left:auto; }
.event-card h3{ font-size:1.12rem; margin:0; line-height:1.45; }
.event-card p{ color:var(--muted); font-size:.92rem; margin:0; flex:1; }
.event-link{ font-weight:800; color:var(--text); align-self:flex-start; }
.event-link:hover{ color:var(--c-fusion); }
.events-empty{ color:var(--muted); grid-column:1/-1; }
@media (max-width:760px){ .events-list{ grid-template-columns:1fr; } .event-date{ margin-left:0; } }

/* ---------- Links / リンク集 ---------- */
.links-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(14px,2vw,20px); }
.link-card{ display:flex; flex-direction:column; background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; transition:transform .3s,border-color .3s; }
.link-card:hover{ transform:translateY(-4px); border-color:var(--line-2); }
.link-thumb{ aspect-ratio:16/9; background:#0d0d18; position:relative; overflow:hidden; display:flex; align-items:center; justify-content:center; }
.link-thumb img{ width:100%; height:100%; object-fit:cover; }
.link-thumb--fallback{ background:linear-gradient(135deg,rgba(177,77,255,.28),rgba(54,214,255,.16)); }
.link-thumb-mark{ font-family:var(--font-en); font-weight:900; font-size:clamp(1.2rem,3vw,1.6rem); letter-spacing:.02em; padding:0 .6em; text-align:center; }
.link-play{ position:absolute; inset:0; margin:auto; width:54px; height:54px; border-radius:50%; background:rgba(10,10,18,.55); border:1px solid rgba(255,255,255,.45); display:flex; align-items:center; justify-content:center; backdrop-filter:blur(4px); transition:transform .3s,background .3s; }
.link-card:hover .link-play{ transform:scale(1.08); background:rgba(224,64,143,.55); }
.link-play::before{ content:""; border-left:16px solid #fff; border-top:10px solid transparent; border-bottom:10px solid transparent; margin-left:4px; }
.link-body{ padding:clamp(16px,2.2vw,22px); display:flex; flex-direction:column; gap:.55rem; flex:1; }
.link-cat{ font-family:var(--font-mono); font-size:.72rem; letter-spacing:.1em; color:var(--c-fusion); }
.link-card h3{ font-size:1.04rem; margin:0; line-height:1.45; }
.link-card p{ color:var(--muted); font-size:.9rem; margin:0; flex:1; }
.link-go{ font-weight:800; color:var(--text); align-self:flex-start; margin-top:.2rem; }
.link-go:hover{ color:var(--c-fusion); }
@media (max-width:860px){ .links-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .links-grid{ grid-template-columns:1fr; } }

/* ---------- Message / 想い ---------- */
.message{ position:relative; }
.message-card{
  display:grid; grid-template-columns:.8fr 1.2fr; gap:clamp(24px,4vw,52px); align-items:center;
  background:linear-gradient(160deg,rgba(255,138,76,.10),rgba(177,77,255,.06));
  border:1px solid var(--line-2); border-radius:var(--radius);
  padding:clamp(26px,4vw,52px); overflow:hidden;
}
.message-card::after{ content:""; position:absolute; inset:auto -10% -50% auto; width:60%; height:120%; background:radial-gradient(closest-side,rgba(224,64,143,.16),transparent); pointer-events:none; }
.message-aside{ position:relative; z-index:1; }
.message-photo{ width:100%; max-width:260px; height:auto; display:block; border-radius:var(--radius); border:1px solid var(--line-2); box-shadow:0 16px 36px -16px rgba(0,0,0,.7); margin-bottom:1.1rem; }
.message-mark{ font-family:var(--font-en); font-size:clamp(3rem,9vw,5rem); font-weight:900; line-height:.9; }
.message-role{ color:var(--muted); font-size:.86rem; margin-top:.8rem; }
.message-name{ font-size:1.4rem; font-weight:800; margin-top:.2rem; }
.message-body{ position:relative; z-index:1; }
.message-body .draft-flag{ display:inline-block; font-size:.72rem; font-weight:700; color:#1a0a14; background:var(--grad-fusion); padding:.2em .7em; border-radius:999px; margin-bottom:1rem; }
.message-body p{ color:var(--text); font-size:1.04rem; margin:0 0 1rem; }
.message-body p.lead{ font-size:clamp(1.15rem,2.4vw,1.5rem); font-weight:700; line-height:1.6; }
.message-body .muted{ color:var(--muted); font-size:.96rem; }
.message-pull{ border-left:3px solid transparent; border-image:var(--grad-fusion) 1; padding:.4rem 0 .4rem 1.1rem; font-weight:700; font-size:1.05rem; line-height:1.7; }
@media (max-width:760px){ .message-card{ grid-template-columns:1fr; } }

/* trademark / partner note */
.tm-note{ color:var(--muted-2); font-size:.78rem; line-height:1.7; margin:1.2rem 0 0; }

/* ---------- Legal pages ---------- */
.legal{ max-width:820px; margin-inline:auto; padding:clamp(48px,8vw,90px) var(--pad); }
.legal h1{ font-size:clamp(1.7rem,4vw,2.4rem); margin:0 0 1.4rem; }
.legal h2{ font-size:1.15rem; margin:2.2rem 0 .7rem; padding-left:.7rem; border-left:3px solid; border-image:var(--grad-fusion) 1; }
.legal-lead{ color:var(--muted); margin:0 0 1rem; }
.legal p{ color:var(--muted); }
.legal ul{ color:var(--muted); padding-left:1.3rem; }
.legal li{ margin:.35rem 0; }
.legal a{ color:var(--c-machine); }
.legal a:hover{ text-decoration:underline; }
.legal-meta{ margin-top:2.4rem; color:var(--muted-2); font-size:.85rem; }
.legal-back{ display:inline-block; margin-top:2rem; color:var(--c-fusion); font-weight:700; }

/* ---------- Scroll reveal ---------- */
.reveal{ opacity:0; transform:translateY(24px); transition:opacity .7s var(--ease),transform .7s var(--ease); }
.reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; }
  html{ scroll-behavior:auto; }
}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .hero-inner{ grid-template-columns:1fr; }
  .hero-visual{ order:-1; min-height:auto; }
  .fusion-orbit{ width:min(340px,80vw); }
  .triad,.dist-grid{ grid-template-columns:repeat(2,1fr); }
  .company-grid,.contact-inner,.footer-inner{ grid-template-columns:1fr; }
  .how-notes{ grid-template-columns:1fr; }
}
@media (max-width:760px){
  .site-nav{
    position:fixed; inset:68px 0 auto 0; flex-direction:column; align-items:stretch; gap:0;
    background:rgba(10,10,18,.97); backdrop-filter:blur(16px); padding:.5rem var(--pad) 1.4rem;
    border-bottom:1px solid var(--line); transform:translateY(-12px); opacity:0; pointer-events:none;
    transition:opacity .25s,transform .25s; max-height:calc(100vh - 68px); overflow:auto;
  }
  .site-nav.open{ transform:none; opacity:1; pointer-events:auto; }
  .site-nav a{ padding:.85rem .2rem; border-bottom:1px solid var(--line); font-size:1rem; }
  .nav-cta{ margin-top:.8rem; text-align:center; }
  .nav-toggle{ display:flex; }
  .sp-br{ display:inline; }
  .why-grid,.cap-grid,.usecase-grid,.triad,.dist-grid,.form-grid2{ grid-template-columns:1fr; }
  .flow{ grid-template-columns:1fr; gap:1rem; }
  .flow-merge{ display:none; }
  .flow-arrow-r{ transform:rotate(90deg); }
  .footer-nav{ grid-template-columns:repeat(2,1fr); }
  .footer-bottom{ flex-direction:column; align-items:flex-start; }
}
@media (max-width:420px){
  .hero-stats{ gap:14px; }
  .stat-num{ font-size:1.6rem; }
}