:root{
  --bg:#121316; --panel:#1A1C21; --panel-2:#22252B; --line:#2C3037; --text:#ECEDEF; --sub:#9AA0AA;
  --amber:#F5A623; --amber-deep:#C9820A; --amber-glow:rgba(245,166,35,.35);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Noto Sans JP",system-ui,sans-serif;font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased}
a{color:inherit}
:focus-visible{outline:3px solid var(--amber);outline-offset:3px}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-family:"JetBrains Mono",monospace;font-size:13px;color:var(--sub)}
.num{font-family:"Space Grotesk",sans-serif;font-weight:700}

/* nav */
.navbar{position:fixed;top:16px;left:0;right:0;z-index:20}
.navbar .inner{max-width:1200px;margin:0 auto;padding:0 24px}
.bar{display:flex;align-items:center;justify-content:space-between;background:rgba(26,28,33,.82);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:12px;padding:10px 10px 10px 22px}
.brand{text-decoration:none;display:flex;align-items:baseline;gap:10px}
.brand b{font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:18px;letter-spacing:.04em;border-bottom:3px solid var(--amber);line-height:1.2}
.brand span{font-size:12px;color:var(--sub)}
nav.links a{font-size:14px;text-decoration:none;color:#C9CDD3;margin:0 14px}
nav.links a:hover{color:#fff}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--amber);color:#16120A;text-decoration:none;font:inherit;font-weight:700;font-size:15px;padding:12px 22px;border:0;border-radius:8px;cursor:pointer}
.btn:hover{background:#FFB940}
.btn.ghost{background:transparent;color:var(--text);box-shadow:inset 0 0 0 1px #4A4F58}
.btn.ghost:hover{box-shadow:inset 0 0 0 1px #8A909A}

/* hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:flex-end;overflow:hidden;padding:140px 0 72px}
.hero svg.racks{position:absolute;inset:0;width:100%;height:100%}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,19,22,.35) 0%,rgba(18,19,22,.15) 40%,rgba(18,19,22,.92) 88%,var(--bg) 100%)}
.hero .wrap{position:relative;z-index:2;width:100%}
.hero .mono{color:var(--amber);margin:0 0 18px}
.hero h1{font-size:clamp(40px,7vw,92px);font-weight:900;line-height:1.12;letter-spacing:-.01em;margin:0 0 26px}
.hero p.lead{max-width:34em;color:#C9CDD3;margin:0 0 34px;font-size:17px}
.actions{display:flex;gap:12px;flex-wrap:wrap}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats div{padding:34px 24px 30px}
.stats div+div{border-left:1px solid var(--line)}
.stats .num{font-size:clamp(36px,4.4vw,56px);line-height:1;color:var(--amber)}
.stats .num small{font-size:.4em;margin-left:4px;color:var(--text)}
.stats .mono{display:block;margin-top:12px}

section{padding:112px 0}
.head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:48px}
h2{font-size:clamp(28px,3.4vw,44px);font-weight:900;line-height:1.3;margin:0}
.head p{color:var(--sub);max-width:30em;margin:0}

/* services */
.svc{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.svc article{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:36px 34px 30px}
.svc .mono{color:var(--amber)}
.svc h3{font-size:26px;font-weight:900;margin:6px 0 4px}
.svc .for{color:var(--sub);font-size:14px;margin:0 0 22px}
.svc ul{list-style:none;margin:0;padding:0}
.svc li{display:flex;gap:14px;padding:13px 0;border-top:1px solid var(--line);font-size:15px}
.svc li::before{content:"";flex:none;width:8px;height:8px;margin-top:10px;background:var(--amber);border-radius:1px}
.note{margin:18px 0 0;font-size:13px;color:var(--sub);background:var(--panel-2);border-radius:8px;padding:12px 14px;line-height:1.75}

/* flow */
.flow{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow li{position:relative;padding-top:26px}
.flow li::before{content:"";position:absolute;top:0;left:0;right:-20px;height:3px;background:var(--line)}
.flow li:first-child::before{background:linear-gradient(90deg,var(--amber),var(--line))}
.flow li:last-child::before{right:0}
.flow .num{font-size:15px;color:var(--amber);display:block}
.flow b{display:block;font-size:19px;margin:4px 0 6px}
.flow span{font-size:14px;color:var(--sub)}

/* faq */
.faq details{border-bottom:1px solid var(--line)}
.faq details:first-child{border-top:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:700;font-size:17px;padding:22px 44px 22px 0;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:16px;font-family:"Space Grotesk",sans-serif;font-size:28px;font-weight:500;color:var(--amber)}
.faq details[open] summary::after{content:"−"}
.faq p{margin:0 0 24px;color:var(--sub);max-width:46em}

/* contact */
.contact{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:56px}
.contact h2{margin-bottom:14px}
.contact p{color:var(--sub);margin:0 0 10px}
form{display:grid;gap:18px}
label{font-size:14px;font-weight:500;display:grid;gap:8px;color:#D6D9DE}
label em{font-style:normal;color:var(--sub);font-size:12px;margin-left:6px}
input,select,textarea{font:inherit;font-size:16px;padding:13px 14px;border:1px solid #3A3F47;border-radius:8px;background:var(--bg);color:#fff;width:100%}
input::placeholder,textarea::placeholder{color:#6F7580}
input:focus,select:focus,textarea:focus{border-color:var(--amber);outline:none}
textarea{min-height:150px;resize:vertical}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.hp{position:absolute;left:-9999px}
#msg{font-size:14px;margin:0;min-height:1.5em}
#msg.ok{color:#8FD19E} #msg.ng{color:#F29A86}

/* company */
.company dl{display:grid;grid-template-columns:10em 1fr;margin:0;border-top:1px solid var(--line)}
.company dt,.company dd{margin:0;padding:18px 0;border-bottom:1px solid var(--line)}
.company dt{color:var(--sub);font-size:14px}

footer{padding:40px 0 56px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px}

@media (prefers-reduced-motion:no-preference){
  .led{animation:blink 3.2s infinite}
  @keyframes blink{0%,100%{opacity:.25}50%{opacity:1}}
}
@media (max-width:900px){
  nav.links{display:none}
  .bar{padding:8px 8px 8px 16px}
  .brand span{display:none}
  .hero{padding:120px 0 48px;min-height:88vh}
  .hero h1{font-size:8.6vw}
  .stats{grid-template-columns:1fr 1fr}
  .stats div:nth-child(3){border-left:0}
  .stats div:nth-child(n+3){border-top:1px solid var(--line)}
  section{padding:76px 0}
  .head{display:block}
  .head p{margin-top:12px}
  .svc,.contact{grid-template-columns:1fr}
  .contact{padding:28px 20px;gap:28px}
  .flow{grid-template-columns:1fr;gap:26px}
  .flow li::before{right:0}
  .row2{grid-template-columns:1fr}
  .company dl{grid-template-columns:7em 1fr}
  footer{display:block}
}