/* AIMETA shared — dark industrial Proof Engine system */
:root{
  --black:#050505;--carbon:#0C0D0E;--carbon-2:#131517;
  --line:rgba(255,255,255,.13);--line-2:rgba(255,255,255,.22);
  --orange:#FF5C35;--ember:#E8401F;--amber:#FFA24D;--orange-dim:rgba(255,92,53,.14);
  --cyan:#59F3D2;--ice:#9FF7E2;--cyan-dim:rgba(89,243,210,.12);
  --paper:#F2EFE8;--ink-hi:#F7F5F1;--ink:#D2D0CB;--gray:#8C887F;--gray-2:#64615A;
  --disp:'Space Grotesk','Noto Sans TC',system-ui,sans-serif;
  --body:'Manrope','Noto Sans TC',system-ui,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
  --gut:clamp(20px,5vw,72px);--max:1280px;
}
html[lang="ja"] :root{}
html[lang="ja"]{--disp:'Space Grotesk','Noto Sans JP',system-ui,sans-serif;--body:'Manrope','Noto Sans JP',system-ui,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--black);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;position:relative}
body::before{content:'';position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px;-webkit-mask-image:radial-gradient(ellipse 90% 55% at 50% 0%,#000 35%,transparent 100%);mask-image:radial-gradient(ellipse 90% 55% at 50% 0%,#000 35%,transparent 100%)}
nav,section,header,footer{position:relative;z-index:1}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gut)}
::selection{background:var(--orange);color:#000}
.mono{font-family:var(--mono);font-variant-ligatures:none}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--orange);display:inline-flex;align-items:center;gap:11px}
.eyebrow::before{content:'';width:26px;height:1px;background:linear-gradient(90deg,var(--orange),transparent)}
.eyebrow.cy{color:var(--cyan)}.eyebrow.cy::before{background:linear-gradient(90deg,var(--cyan),transparent)}
.pill{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;padding:3px 8px;border:1px solid var(--line-2);border-radius:2px;color:var(--gray);white-space:nowrap}
.pill.dev{color:var(--orange);border-color:rgba(255,92,53,.4);background:var(--orange-dim)}
.pill.plan{color:var(--gray)}
.pill.demo{color:var(--cyan);border-color:rgba(89,243,210,.4);background:var(--cyan-dim)}
.pill.ok{color:var(--cyan);border-color:rgba(89,243,210,.4)}
nav{position:sticky;top:0;z-index:100;background:rgba(5,5,5,.72);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:30px;height:66px}
.brand{font-family:var(--disp);font-weight:700;font-size:19px;letter-spacing:.02em;color:var(--ink-hi);display:flex;align-items:center;gap:9px}
.brand .logo-img{height:24px;width:auto;display:block}
.f-brand .logo-img{height:22px}
.brand .dot{width:9px;height:9px;background:var(--orange);border-radius:50%;box-shadow:0 0 10px var(--orange)}
.nav-links{display:flex;gap:24px;margin-left:14px;font-size:13.5px}
.nav-links a{position:relative;padding:4px 0;color:var(--gray)}
.nav-links a:hover,.nav-links a.on{color:var(--ink-hi)}
.nav-r{margin-left:auto;display:flex;align-items:center;gap:14px}
.langs{display:flex;font-family:var(--mono);font-size:11px;border:1px solid var(--line-2);border-radius:2px;overflow:hidden}
.langs button{background:none;border:0;padding:5px 9px;cursor:pointer;font:inherit;color:var(--gray)}
.langs button.on{background:var(--paper);color:#000}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:13px;letter-spacing:.02em;padding:11px 18px;border:1px solid var(--line-2);border-radius:2px;color:var(--ink-hi);transition:border-color .2s,background .2s,transform .2s;cursor:pointer;background:none;white-space:nowrap;position:relative}
.btn:hover{border-color:var(--ink);background:rgba(255,255,255,.045);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-p{background:linear-gradient(180deg,#FF7A48,#FF5C35 58%,#F04A24);border-color:#FF6B3F;color:#0A0503;font-weight:600}
.btn-p:hover{background:linear-gradient(180deg,#FF8A58,#FF6B45 58%,#FF5530);border-color:#FF8A58;box-shadow:0 10px 34px -10px rgba(255,107,63,.65)}
.menu-tog{display:none;background:none;border:0;color:var(--ink-hi);font-family:var(--mono);cursor:pointer;font-size:20px}
@media(max-width:940px){.nav-links{display:none}.menu-tog{display:block}}
section{padding:clamp(64px,9vw,110px) 0;position:relative;border-top:1px solid var(--line)}
h2{font-family:var(--disp);font-weight:600;letter-spacing:-.025em;font-size:clamp(28px,4vw,46px);line-height:1.08;color:var(--ink-hi);max-width:22ch;margin-top:16px}
.sub{color:var(--gray);max-width:62ch;margin-top:14px;font-size:16.5px}
.phero{padding-top:clamp(56px,7vw,92px);padding-bottom:clamp(40px,6vw,64px);border-top:0;position:relative}
.phero::before{content:'';position:absolute;inset:-40% -20% -10%;z-index:-1;pointer-events:none;background:
  radial-gradient(46% 52% at 18% 12%,rgba(255,92,53,.11),transparent 62%),
  radial-gradient(34% 40% at 92% 80%,rgba(89,243,210,.05),transparent 60%)}
.phero h1{font-family:var(--disp);font-weight:700;letter-spacing:-.035em;font-size:clamp(36px,6vw,68px);line-height:1.02;color:var(--ink-hi);max-width:17ch;margin-top:22px}
.phero h1 .o{background:linear-gradient(102deg,var(--amber) 5%,var(--orange) 52%,var(--ember) 95%);-webkit-background-clip:text;background-clip:text;color:transparent}
.phero p.lede{margin-top:22px;font-size:clamp(16px,1.4vw,18.5px);color:var(--ink);max-width:58ch}
.phero .cta{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.crumb{font-family:var(--mono);font-size:11.5px;color:var(--gray-2);letter-spacing:.05em}
.crumb a:hover{color:var(--orange)}
.tbd{margin-top:18px;font-family:var(--mono);font-size:11.5px;color:var(--gray-2)}
.band{background:var(--paper);color:#0A0A0A;text-align:center}
.band h2{color:#0A0A0A;max-width:24ch;margin:0 auto}
.band p{color:#5B5852;max-width:54ch;margin:16px auto 0;font-size:16.5px}
.band .cta{display:flex;gap:12px;justify-content:center;margin-top:30px;flex-wrap:wrap}
.band .btn{color:#0A0A0A;border-color:rgba(0,0,0,.2)}
.band .btn:hover{border-color:#000;background:rgba(0,0,0,.05)}
.band .btn-p{background:var(--orange);border-color:var(--orange);color:#0A0503}
footer{background:var(--black);padding:56px 0 38px;border-top:1px solid var(--line)}
.f-top{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:32px;padding-bottom:34px;border-bottom:1px solid var(--line)}
.f-brand .brand{margin-bottom:12px}.f-brand p{font-size:13px;color:var(--gray-2);max-width:230px}
.f-col h5{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--gray-2);margin-bottom:14px}
.f-col a{display:block;color:var(--gray);padding:4px 0;font-size:13.5px}.f-col a:hover{color:var(--ink-hi)}
.f-bot{display:flex;justify-content:space-between;gap:20px;padding-top:24px;font-family:var(--mono);font-size:11.5px;color:var(--gray-2);flex-wrap:wrap}
@media(max-width:900px){.f-top{grid-template-columns:1fr 1fr}.f-brand{grid-column:1/3}}
.rv{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1!important;transform:none!important}html{scroll-behavior:auto}}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px}
.mmenu{display:none;position:fixed;inset:66px 0 0;background:var(--black);z-index:99;padding:24px var(--gut);flex-direction:column;gap:4px;border-top:1px solid var(--line)}
.mmenu.open{display:flex}
.mmenu a{padding:14px 0;border-bottom:1px solid var(--line);font-family:var(--disp);font-size:18px;color:var(--ink-hi)}

/* instrument polish (subpages) */
.pl:hover,.fc:hover,.dcard:hover,.u:hover,.cc:hover,.lyr:hover,.fstep:hover{transform:translateY(-2px);box-shadow:inset 0 1px 0 rgba(255,92,53,.4),0 18px 44px -20px rgba(0,0,0,.85)}
.pl,.fc,.dcard,.u,.cc,.lyr,.fstep{transition:background .2s,transform .22s,box-shadow .22s}
.band{clip-path:polygon(28px 0,100% 0,100% calc(100% - 28px),calc(100% - 28px) 100%,0 100%,0 28px)}
footer{position:relative;overflow:hidden}
footer::before{content:'AIMETA';position:absolute;left:50%;bottom:-.16em;transform:translateX(-50%);z-index:0;font-family:var(--disp);font-weight:700;font-size:clamp(110px,20vw,280px);letter-spacing:.04em;line-height:1;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.05);pointer-events:none}
footer .wrap{position:relative;z-index:1}
::-webkit-scrollbar{width:11px;background:#0A0A0B}
::-webkit-scrollbar-thumb{background:#202124;border:3px solid #0A0A0B;border-radius:7px}
::-webkit-scrollbar-thumb:hover{background:var(--orange)}

/* ---- CJK typography: JA / ZH-Hant need looser leading, no negative tracking ---- */
html[lang="ja"] h1,html[lang="zh-Hant"] h1{font-size:clamp(36px,6.2vw,76px);line-height:1.16;letter-spacing:.01em;max-width:15ch}
html[lang="ja"] h2,html[lang="zh-Hant"] h2{line-height:1.26;letter-spacing:.01em}
html[lang="ja"] .phero h1,html[lang="zh-Hant"] .phero h1{font-size:clamp(32px,5.2vw,58px);line-height:1.2;letter-spacing:.01em}
html[lang="ja"] .claim .neg,html[lang="zh-Hant"] .claim .neg{line-height:1.45}
html[lang="ja"] .band h2,html[lang="zh-Hant"] .band h2{line-height:1.26}
html[lang="ja"] summary,html[lang="zh-Hant"] summary{line-height:1.5}
html[lang="ja"] .step h3,html[lang="zh-Hant"] .step h3,
html[lang="ja"] .route h3,html[lang="zh-Hant"] .route h3,
html[lang="ja"] .mcard h3,html[lang="zh-Hant"] .mcard h3{line-height:1.35}

/* mobile nav: CTA lives in the burger menu; keep logo + languages + burger */
@media(max-width:640px){
  .nav{gap:14px}
  .nav-r{gap:10px}
  .nav-r a.btn{display:none}
  .brand .logo-img{height:20px}
  .langs button{padding:5px 7px}
}