/* TKMLAB corporate — modern build 2024
   産業ネットワーク／インフラ受託 のためのクリーンで技術的なUI
   ------------------------------------------------------------ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --ink:#0a1424;
  --ink-2:#1b2839;
  --steel:#5c6b82;
  --mist:#8a97ab;
  --paper:#f5f6f8;
  --white:#ffffff;
  --line:#e5e9f0;
  --line-strong:#d3d9e4;
  --accent:#2f56ff;
  --accent-ink:#1c3ad1;
  --signal:#00d1a0;
  --radius:14px;
  --shadow:0 1px 2px rgba(13,27,52,.04),0 8px 24px rgba(13,27,52,.06);
  --shadow-lg:0 12px 40px rgba(13,27,52,.12);
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Inter","Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none;transition:color .15s;}
a:hover{color:var(--accent-ink);}
img{max-width:100%;height:auto;}

.container{max-width:1080px;margin:0 auto;padding:0 24px;}
.mono{font-family:"IBM Plex Mono",monospace;}

/* header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(245,246,248,.82);
  backdrop-filter:saturate(160%) blur(12px);
  -webkit-backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:20px;flex-wrap:wrap;}
.brand a{font-family:"Space Grotesk",sans-serif;font-size:21px;font-weight:700;color:var(--ink);letter-spacing:-.01em;display:inline-flex;align-items:baseline;gap:7px;}
.brand-mark{color:var(--accent);}
.brand-sub{font-family:"IBM Plex Mono",monospace;font-size:10px;color:var(--mist);font-weight:400;letter-spacing:.18em;text-transform:uppercase;}
.global-nav ul{list-style:none;display:flex;align-items:center;margin:0;padding:0;gap:2px;flex-wrap:wrap;}
.global-nav li a{display:block;padding:8px 14px;font-size:13.5px;font-weight:500;color:var(--steel);border-radius:8px;}
.global-nav li a:hover{color:var(--ink);background:rgba(47,86,255,.06);}
.nav-login a{background:var(--ink);color:#fff !important;margin-left:6px;}
.nav-login a:hover{background:var(--ink-2);}

/* hero */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(120% 140% at 85% -10%, rgba(47,86,255,.16) 0%, rgba(47,86,255,0) 55%),
    linear-gradient(180deg,#0a1424 0%,#0f1e35 100%);
  color:#fff;padding:96px 0 88px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(120% 90% at 70% 0%,#000 30%,transparent 75%);
  mask-image:radial-gradient(120% 90% at 70% 0%,#000 30%,transparent 75%);
  pointer-events:none;
}
.hero .container{position:relative;}
.hero-eyebrow{
  font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.14em;
  color:var(--signal);margin:0 0 20px;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:9px;
}
.hero-eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--signal);box-shadow:0 0 0 4px rgba(0,209,160,.18);}
.hero h1{font-family:"Space Grotesk",sans-serif;font-size:clamp(30px,5vw,52px);line-height:1.12;margin:0 0 22px;font-weight:600;letter-spacing:-.02em;}
.hero-lead{font-size:16px;color:#c3cede;max-width:600px;margin:0 0 34px;line-height:1.75;}

.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;font-size:14px;font-weight:600;border-radius:10px;cursor:pointer;border:1px solid transparent;transition:.18s;font-family:inherit;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 20px rgba(47,86,255,.35);}
.btn-primary:hover{background:var(--accent-ink);color:#fff;transform:translateY(-1px);}
.btn-ghost{border-color:rgba(255,255,255,.28);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.5);}

/* sections */
.section{padding:76px 0;}
.section-title{font-family:"Space Grotesk",sans-serif;font-size:13px;font-weight:600;color:var(--accent);margin:0 0 30px;letter-spacing:.02em;display:flex;align-items:center;gap:12px;text-transform:uppercase;}
.section-title::before{font-family:"IBM Plex Mono",monospace;color:var(--mist);font-weight:400;font-size:12px;}
.news .section-title::before{content:"01 /";}
.services-preview .section-title::before{content:"02 /";}
.section-title.light{color:#fff;}

/* news */
.news-list{margin:0;display:grid;gap:0;border-top:1px solid var(--line);}
.news-list dt{font-family:"IBM Plex Mono",monospace;padding:18px 0 4px;color:var(--mist);font-size:12.5px;letter-spacing:.02em;}
.news-list dd{padding:0 0 18px;margin:0;font-size:15px;color:var(--ink-2);font-weight:500;border-bottom:1px solid var(--line);transition:color .15s;}
.news-list dd:hover{color:var(--accent);}

/* cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;box-shadow:var(--shadow);transition:.2s;position:relative;}
.card::before{content:attr(data-idx);position:absolute;top:22px;right:24px;font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--line-strong);}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--line-strong);}
.card h3{font-family:"Space Grotesk",sans-serif;margin:0 0 12px;font-size:18px;color:var(--ink);font-weight:600;}
.card p{margin:0;font-size:14px;color:var(--steel);line-height:1.7;}

/* company band */
.company-wrap{padding:0 0 76px;}
.company-band{background:linear-gradient(120deg,#0f1e35 0%,#132747 100%);color:#fff;border-radius:var(--radius);overflow:hidden;position:relative;}
.company-band .container{padding-top:60px;padding-bottom:60px;}
.company-band p{color:#c3cede;max-width:600px;font-size:15.5px;}

/* footer */
.site-footer{background:var(--ink);color:#9fb0c6;font-size:14px;margin-top:20px;}
.footer-inner{display:flex;justify-content:space-between;padding:52px 24px 40px;flex-wrap:wrap;gap:32px;}
.footer-brand{font-family:"Space Grotesk",sans-serif;font-size:18px;font-weight:600;color:#fff;}
.footer-brand .brand-mark{color:var(--accent);}
.footer-addr{font-family:"Inter",sans-serif;font-size:12px;color:var(--mist);margin:12px 0 0;font-weight:400;}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:8px;}
.footer-links li a{color:#9fb0c6;font-size:13px;}
.footer-links li a:hover{color:#fff;}
.footer-copy{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;}
.footer-copy small{color:var(--mist);font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.02em;}

/* generic pages */
.page-head{background:linear-gradient(180deg,#0a1424 0%,#0f1e35 100%);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden;}
.page-head::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:46px 46px;-webkit-mask-image:radial-gradient(100% 100% at 80% 0%,#000 20%,transparent 70%);mask-image:radial-gradient(100% 100% at 80% 0%,#000 20%,transparent 70%);}
.page-head h1{font-family:"Space Grotesk",sans-serif;margin:0;font-size:clamp(26px,4vw,38px);font-weight:600;letter-spacing:-.02em;position:relative;}
.page-body{padding:56px 0 72px;}
.page-body h2{font-family:"Space Grotesk",sans-serif;font-size:20px;color:var(--ink);font-weight:600;margin:40px 0 16px;padding-bottom:10px;border-bottom:1px solid var(--line);}
.page-body h2:first-of-type{margin-top:0;}
.data-table{width:100%;border-collapse:separate;border-spacing:0;margin:18px 0;font-size:14.5px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.data-table th,.data-table td{padding:14px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);}
.data-table tr:last-child th,.data-table tr:last-child td{border-bottom:none;}
.data-table th{background:#fafbfc;color:var(--ink);width:190px;white-space:nowrap;font-weight:600;font-size:13.5px;}
.data-table td{color:var(--steel);}
.notice{background:rgba(47,86,255,.05);border:1px solid rgba(47,86,255,.18);padding:14px 18px;font-size:13.5px;color:var(--accent-ink);margin:18px 0;border-radius:10px;display:flex;gap:10px;align-items:flex-start;}
.notice::before{content:"i";font-family:"IBM Plex Mono",monospace;font-weight:600;flex:0 0 20px;height:20px;line-height:20px;text-align:center;background:var(--accent);color:#fff;border-radius:50%;font-size:12px;}

/* responsive */
@media(max-width:820px){.card-grid{grid-template-columns:1fr;}.hero{padding:68px 0 60px;}}
@media(max-width:640px){.header-inner{min-height:auto;padding:12px 0;}.global-nav ul{gap:0;}.global-nav li a{padding:7px 10px;font-size:13px;}.footer-inner{flex-direction:column;gap:24px;}.data-table th{width:120px;}}
@media(prefers-reduced-motion:reduce){*{transition:none !important;scroll-behavior:auto;}}