:root{
  --bg:#0E0F12;
  --bg2:#121418;
  --line:#1E2127;
  --line2:#2A2E35;
  --text:#F2F3F5;
  --sub:#C9CED5;
  --muted:#A3A9B2;
  --dim:#8A919B;
  --accent:#8FB2E0;
  --pad:24px;
  --head:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--head);-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:'Noto Sans JP','Manrope',system-ui,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--text)}
a:hover{color:#fff}
img,svg{display:block}
.mono{font-family:'IBM Plex Mono',ui-monospace,monospace}
.latin{font-family:'Manrope','Noto Sans JP',sans-serif}
.eyebrow{font-family:'IBM Plex Mono',ui-monospace,monospace;font-size:11px;font-weight:500;letter-spacing:.16em;color:var(--accent);margin:0}
.wrap{width:100%;max-width:1440px;margin:0 auto;padding:0 var(--pad)}
h1,h2,h3,p{margin:0}
h2{font-size:28px;font-weight:500;line-height:1.45}
.btn{display:inline-flex;align-items:center;gap:14px;min-height:52px;padding:0 24px;border:1px solid var(--text);text-decoration:none;font-size:13px;font-weight:500;letter-spacing:.1em;color:var(--text);transition:background .2s,color .2s}
.btn:hover{background:var(--text);color:var(--bg)}
.btn span{font-size:16px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* header */
.site-head{position:fixed;inset:0 0 auto 0;height:var(--head);z-index:20;background:rgba(14,15,18,.82);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .2s}
.site-head.scrolled{border-bottom-color:var(--line)}
.site-head .wrap{height:100%;display:flex;align-items:center;justify-content:space-between;padding-right:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand-name{font-family:'Manrope',sans-serif;font-size:18px;font-weight:300;letter-spacing:.01em;color:var(--text)}
.nav{display:none}
.nav a{text-decoration:none;font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.16em;color:var(--sub)}
.nav a:hover{color:#fff}
.nav .nav-cta{min-height:44px;padding:0 20px;border:1px solid var(--text);display:flex;align-items:center;color:var(--text)}
.menu-btn{width:48px;height:48px;padding:0;border:0;background:transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;cursor:pointer}
.menu-btn span{display:block;width:26px;height:1px;background:var(--text)}

/* mobile menu */
.menu{position:fixed;inset:0;z-index:30;background:var(--bg);display:flex;flex-direction:column;visibility:hidden;opacity:0;transition:opacity .2s,visibility .2s}
.menu.open{visibility:visible;opacity:1}
.menu-top{height:var(--head);flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:0 16px 0 var(--pad)}
.close-btn{position:relative;width:48px;height:48px;padding:0;border:0;background:transparent;cursor:pointer}
.close-btn span{position:absolute;left:11px;top:23px;width:26px;height:1px;background:var(--text)}
.close-btn span:first-child{transform:rotate(45deg)}
.close-btn span:last-child{transform:rotate(-45deg)}
.menu nav{flex-grow:1;padding:40px var(--pad) 0;display:flex;flex-direction:column}
.menu nav .eyebrow{margin-bottom:20px}
.menu nav a{min-height:84px;border-top:1px solid var(--line2);display:flex;align-items:center;gap:18px;text-decoration:none;color:var(--text)}
.menu nav a:last-child{border-bottom:1px solid var(--line2)}
.menu nav .num{width:24px;font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--accent)}
.menu nav .en{display:block;font-family:'Manrope',sans-serif;font-size:26px;font-weight:300;letter-spacing:.02em}
.menu nav .ja{display:block;font-size:12px;color:var(--muted)}
.menu-foot{padding:24px var(--pad);display:flex;justify-content:space-between;align-items:center;font-size:11px}

/* hero */
.hero{position:relative;min-height:100vh;min-height:100svh;overflow:hidden;display:flex;flex-direction:column;padding-top:var(--head)}
.waves{position:relative;flex:1 1 auto;min-height:140px;width:100%;overflow:hidden}
.waves .baseline{position:absolute;left:0;right:0;top:50%;height:1px;background:var(--line)}
.waves svg{position:absolute;left:0;top:50%;width:200%;height:min(100%,160px);transform:translateY(-50%)}
.waves .soft{opacity:.35}
.waves .main{filter:drop-shadow(0 0 6px rgba(143,178,224,.55))}
@keyframes saScroll{from{transform:translateX(0)}to{transform:translateX(-390px)}}
.sa-wave{animation:saScroll 5s linear infinite}
.sa-wave-slow{animation:saScroll 12s linear infinite}
@media (prefers-reduced-motion:reduce){.sa-wave,.sa-wave-slow{animation:none}html{scroll-behavior:auto}}
.hero-copy{flex-shrink:0;padding-bottom:64px;display:flex;flex-direction:column;gap:18px}
.hero-copy > *{max-width:760px}
.hero h1{font-size:clamp(30px,10vw,40px);font-weight:500;line-height:1.3;letter-spacing:.02em}
.hero .lead{font-size:16px;line-height:1.8;letter-spacing:.04em;color:var(--sub)}
.hero .btn{align-self:flex-start;margin-top:10px}
.scroll-cue{display:none;position:absolute;right:calc(max(0px,(100% - 1440px) / 2) + var(--pad));bottom:96px;flex-direction:column;align-items:flex-end;gap:8px;font-size:11px;letter-spacing:.16em;color:var(--dim)}
.scroll-cue i{display:block;width:1px;height:56px;background:#3A3F47}

/* sections */
section.block{padding:88px 0;border-top:1px solid var(--line)}
section.alt{background:var(--bg2);border-top:0}
.sec-head{display:flex;flex-direction:column;gap:16px;margin-bottom:28px}
.about-body{font-size:15px;line-height:1.95;color:var(--muted)}

.cards{display:grid;grid-template-columns:1fr;gap:20px}
.card{padding:28px 24px;border:1px solid var(--line2);display:flex;flex-direction:column;gap:14px}
.card .kind{font-size:10px;font-weight:500;letter-spacing:.16em;color:var(--muted)}
.card .name{font-family:'Manrope',sans-serif;font-size:30px;font-weight:300;letter-spacing:.01em}
.card .name-alarme{display:flex;align-items:center;gap:14px}
.card .name-alarme span{font-family:'Nunito','Manrope',sans-serif;font-size:30px;font-weight:800}
.card .tag{font-size:14px;font-weight:500}
.card p{font-size:14px;line-height:1.9;color:var(--muted)}
.card .link{align-self:flex-start;min-height:44px;display:flex;align-items:center;gap:10px;text-decoration:none;font-size:13px;font-weight:500;letter-spacing:.08em;color:var(--accent)}
.card .soon{font-size:13px;font-weight:500;letter-spacing:.08em;color:var(--muted)}
.card-foot{margin-top:auto}

.points{display:grid;grid-template-columns:1fr;border-bottom:1px solid var(--line2)}
.point{padding:24px 0;border-top:1px solid var(--line2);display:flex;flex-direction:column;gap:10px}
.point .n{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--accent)}
.point h3{font-size:17px;font-weight:500}
.point p{font-size:14px;line-height:1.9;color:var(--muted)}

.company{margin:0;border-bottom:1px solid var(--line2)}
.company div{padding:16px 0;border-top:1px solid var(--line2);display:flex;flex-direction:column;gap:6px}
.company dt{font-size:12px;color:var(--muted)}
.company dd{margin:0;font-size:15px;line-height:1.8}
.company .note{font-size:12px;color:var(--dim)}
.company a{color:var(--text);text-underline-offset:3px}

.contact .intro{font-size:14px;line-height:1.9;color:var(--muted);margin-top:4px}
.contact .intro a{color:var(--sub);text-underline-offset:3px}

/* form */
.form{display:flex;flex-direction:column;gap:22px}
.field{display:flex;flex-direction:column;gap:8px}
.field label,.field .label{font-size:13px;font-weight:500;color:var(--sub);display:flex;align-items:center;gap:8px}
.req{font-size:10px;font-weight:500;letter-spacing:.08em;color:var(--bg);background:var(--accent);padding:1px 6px}
.form input[type=text],.form input[type=email],.form select,.form textarea{width:100%;min-height:50px;padding:13px 14px;border:1px solid var(--line2);border-radius:0;background:var(--bg2);color:var(--text);font:inherit;font-size:16px;line-height:1.6;transition:border-color .2s}
.form textarea{min-height:168px;resize:vertical}
.form input::placeholder,.form textarea::placeholder{color:#6B727C}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--accent)}
.form select{appearance:none;-webkit-appearance:none;padding-right:44px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23C9CED5' stroke-width='1.4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center}
.form select:invalid{color:#6B727C}
.form option{color:var(--text);background:var(--bg2)}
.consent{display:flex;flex-direction:column;gap:12px;padding:18px;border:1px solid var(--line2)}
.consent p{font-size:12px;line-height:1.8;color:var(--muted)}
.consent label{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--sub);cursor:pointer;min-height:24px}
.consent input{width:18px;height:18px;margin:2px 0 0;accent-color:var(--accent);flex-shrink:0}
.hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;overflow:hidden}
.submit{justify-content:center;width:100%;font-size:14px;cursor:pointer;background:transparent;font-family:inherit}
.submit[disabled]{opacity:.5;cursor:wait}
.status{font-size:14px;line-height:1.8;min-height:0}
.status.ok{padding:16px 18px;border:1px solid var(--accent);color:var(--text)}
.status.err{padding:16px 18px;border:1px solid #D9A26A;color:#F0D2B0}
.status a{color:inherit;text-underline-offset:3px}

.site-foot{border-top:1px solid var(--line);padding:32px 0 40px}
.site-foot .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.site-foot .brand-name{font-size:14px}
.copy{font-family:'Manrope',sans-serif;font-size:11px;color:var(--dim)}

/* desktop */
@media (min-width:900px){
  :root{--pad:56px;--head:96px}
  .brand-name{font-size:23px}
  .brand svg{width:38px;height:38px}
  .nav{display:flex;align-items:center;gap:40px}
  .menu-btn,.menu{display:none}
  .site-head .wrap{padding-right:var(--pad)}
  .waves svg{height:min(100%,300px)}
  .hero-copy{padding-bottom:88px;gap:24px}
  .hero h1{font-size:clamp(56px,5.3vw,76px);line-height:1.22}
  .hero .lead{font-size:21px}
  .eyebrow{font-size:13px}
  .scroll-cue{display:flex}
  section.block{padding:128px 0}
  h2{font-size:36px}
  .about{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
  .about .sec-head{margin-bottom:0}
  .about-body{font-size:17px}
  .cards{grid-template-columns:1fr 1fr;gap:24px}
  .card{padding:40px 36px}
  .points{grid-template-columns:repeat(3,1fr);gap:40px;border-bottom:0}
  .point{border-bottom:1px solid var(--line2)}
  .company div{flex-direction:row;gap:0;padding:22px 0}
  .company dt{width:220px;flex-shrink:0;font-size:13px;padding-top:2px}
  .company dd{font-size:16px}
  .contact{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
  .contact .sec-head{margin-bottom:0}
  .submit{width:auto;align-self:flex-start;padding:0 48px}
}

/* ---- shared additions ---- */
.card-links{display:flex;flex-direction:column;gap:2px}
@media (min-width:900px){ .nav{gap:28px} }
@media (min-width:1200px){ .nav{gap:40px} }
.nav a[aria-current="page"]{color:#fff}

/* ---- business page ---- */
.page-hero{padding:calc(var(--head) + 72px) 0 72px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.page-hero .wrap{display:flex;flex-direction:column;gap:20px}
.page-hero h1{font-family:'Manrope','Noto Sans JP',sans-serif;font-size:clamp(44px,12vw,56px);font-weight:300;letter-spacing:.01em;line-height:1.1}
.page-hero .sub{font-size:17px;font-weight:500;line-height:1.7}
.page-hero .lead{font-size:15px;line-height:1.95;color:var(--muted);max-width:720px}
.badge{align-self:flex-start;font-size:12px;font-weight:500;color:var(--sub);border:1px solid #4A4F57;border-radius:999px;padding:4px 14px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.btn.primary{background:var(--text);color:var(--bg)}
.btn.primary:hover{background:#fff;color:var(--bg)}

.lede{font-size:15px;line-height:1.95;color:var(--muted);max-width:760px}
.lede + .lede{margin-top:16px}
.lede strong{color:var(--text);font-weight:500}

.plans{display:grid;grid-template-columns:1fr;gap:20px;margin-top:8px}
.plan{border:1px solid var(--line2);padding:32px 24px;display:flex;flex-direction:column;gap:18px;background:var(--bg)}
.plan.featured{border-color:var(--accent)}
.plan .tier{font-family:'IBM Plex Mono',monospace;font-size:11px;font-weight:500;letter-spacing:.16em;color:var(--accent)}
.plan h3{font-size:24px;font-weight:500}
.plan .for{font-size:14px;line-height:1.9;color:var(--muted)}
.plan ul{list-style:none;margin:0;padding:0;border-top:1px solid var(--line2)}
.plan li{display:flex;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px solid var(--line2);font-size:14px}
.plan li .v{color:var(--sub);text-align:right;flex-shrink:0}
.plan li .v.yes{color:var(--accent)}
.plan li .v.no{color:var(--dim)}
.plan .price{margin-top:auto;padding-top:6px;display:flex;justify-content:space-between;align-items:baseline;gap:16px}
.plan .price span:first-child{font-size:12px;color:var(--muted)}
.plan .price span:last-child{font-size:15px;font-weight:500}
.plans-note{font-size:13px;line-height:1.9;color:var(--muted);margin-top:20px}

.flow{list-style:none;margin:8px 0 0;padding:0;display:grid;grid-template-columns:1fr;border-bottom:1px solid var(--line2)}
.flow li{padding:24px 0;border-top:1px solid var(--line2);display:flex;flex-direction:column;gap:10px}
.flow .n{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--accent)}
.flow h3{font-size:17px;font-weight:500;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.flow h3 small{font-size:11px;font-weight:500;color:var(--sub);border:1px solid #4A4F57;border-radius:999px;padding:1px 10px}
.flow p{font-size:14px;line-height:1.9;color:var(--muted)}

.cta{padding:96px 0;text-align:left}
.cta .wrap{display:flex;flex-direction:column;gap:20px}
.cta h2{max-width:720px}
.cta p{font-size:15px;line-height:1.9;color:var(--muted)}

@media (min-width:900px){
  .page-hero{padding:calc(var(--head) + 120px) 0 112px}
  .page-hero h1{font-size:88px}
  .page-hero .sub{font-size:21px}
  .page-hero .lead{font-size:17px}
  .lede{font-size:17px}
  .split{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
  .split .sec-head{margin-bottom:0}
  .plans{grid-template-columns:1fr 1fr;gap:24px}
  .plan{padding:44px 40px}
  .flow{grid-template-columns:repeat(4,1fr);gap:32px;border-bottom:0}
  .flow li{border-bottom:1px solid var(--line2)}
  .cta{padding:128px 0}
  .cta .wrap{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:48px}
  .cta .cta-text{display:flex;flex-direction:column;gap:20px}
}