*{box-sizing:border-box}
html{scroll-behavior:smooth}
:root{
  --bg:#ffffff;
  --soft:#f7f9fc;
  --ink:#16181d;
  --muted:#5f6673;
  --line:#e5e9f0;
  --accent:#1f4ed8;
  --accent-deep:#163aa5;
  --radius:18px;
  --shadow:0 24px 60px rgba(25,43,88,.12);
}
body{
  margin:0;
  font-family:"Inter","Noto Sans JP",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 48px));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(18px);
  border-bottom:1px solid rgba(229,233,240,.9);
}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:baseline;gap:20px}
.brand-name{font-size:28px;font-weight:700;letter-spacing:.03em}
.brand-role{font-size:12px;color:var(--muted)}
.nav{display:flex;gap:34px;align-items:center}
.nav a{font-size:12px;font-weight:600;letter-spacing:.06em;padding:29px 0 25px;border-bottom:3px solid transparent}
.nav a:hover,.nav a.active{color:var(--accent);border-bottom-color:var(--accent)}
.menu-button{display:none;background:none;border:0;font:inherit;font-size:12px;font-weight:700}
.mobile-nav{display:none}
.hero{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(circle at 18% 10%,rgba(31,78,216,.07),transparent 32%),
    linear-gradient(180deg,#fbfcff 0%,#fff 100%);
  border-bottom:1px solid var(--line);
}
.hero-grid{min-height:620px;display:grid;grid-template-columns:.9fr 1.25fr;align-items:center;gap:56px}
.eyebrow{color:var(--accent);font-size:14px;font-weight:600;margin:0 0 20px}
.hero h1{font-size:clamp(38px,5vw,62px);line-height:1.35;letter-spacing:-.035em;margin:0 0 26px;font-weight:600}
.hero-text{color:#3f4652;font-size:16px;margin:0 0 34px}
.button{
  display:inline-flex;align-items:center;justify-content:space-between;gap:34px;
  min-width:170px;padding:15px 20px;border-radius:2px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
}
.button.primary{
  color:#fff;
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));
  box-shadow:0 12px 28px rgba(31,78,216,.22);
}
.hero-visual{position:relative;min-height:430px;display:flex;align-items:center;justify-content:center}
.device{background:#fff;border:1px solid #dfe4ec;box-shadow:var(--shadow)}
.desktop-device{width:92%;border-radius:18px;overflow:hidden}
.browser-bar{height:28px;background:#f4f6f9;border-bottom:1px solid #e3e7ee;display:flex;align-items:center;gap:6px;padding:0 12px}
.browser-bar span{width:7px;height:7px;border-radius:50%;background:#c7ced8}
.mock-layout{display:grid;grid-template-columns:150px 1fr;min-height:310px}
.mock-sidebar{border-right:1px solid #edf0f5;padding:22px 16px;display:flex;flex-direction:column;gap:12px;font-size:11px;color:#68707c}
.mock-sidebar strong{color:#111722;font-size:13px;margin-bottom:8px}
.mock-nav{padding:8px 9px;border-radius:6px}
.mock-nav.active{background:#eff4ff;color:var(--accent);font-weight:600}
.mock-main{padding:22px}
.mock-topline{display:flex;justify-content:space-between;align-items:center;font-size:13px}
.mock-chip{font-size:9px;color:#8a93a1}
.metric-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0}
.metric-card{padding:14px;background:#f8faff;border:1px solid #edf1f7}
.metric-card small{display:block;color:#7c8491;font-size:9px}
.metric-card b{display:block;font-size:24px;margin-top:4px}
.chart-card{height:130px;border:1px solid #edf1f7;padding:12px;color:var(--accent)}
.chart-card svg{width:100%;height:100%}
.activity-card{margin-top:12px;display:grid;gap:9px;font-size:9px;color:#59616d}
.avatar{display:inline-block;width:14px;height:14px;border-radius:50%;background:#d6dce5;margin-right:8px;vertical-align:-3px}
.phone-device{
  position:absolute;right:-2px;bottom:8px;width:158px;border-radius:26px;padding:12px;
  transform:rotate(.5deg);
}
.phone-notch{width:52px;height:8px;background:#101318;border-radius:8px;margin:0 auto 12px}
.phone-screen{min-height:275px;background:#fbfcff;border-radius:17px;padding:14px;color:#1e2530}
.phone-screen strong{font-size:10px}
.phone-metric{padding:10px;border:1px solid #eef1f6;margin-top:9px}
.phone-metric small{display:block;font-size:7px;color:#87909c}
.phone-metric b{font-size:18px}
.phone-screen svg{width:100%;margin-top:10px;color:var(--accent)}
.section{padding:88px 0}
.section.soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-heading{text-align:center;margin-bottom:42px}
.section-kicker{position:relative;display:inline-block;font-size:18px;font-weight:600;letter-spacing:.05em;margin:0 0 22px}
.section-kicker:after{content:"";position:absolute;left:50%;bottom:-10px;width:28px;height:3px;transform:translateX(-50%);background:var(--accent)}
.section-kicker.left:after{left:0;transform:none}
.section-heading h2{font-size:15px;font-weight:400;color:#4c535e;margin:0}
.work-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.work-card{border:1px solid var(--line);background:#fff;transition:.25s ease}
.work-card:hover{transform:translateY(-5px);box-shadow:0 18px 45px rgba(25,43,88,.08)}
.work-image{height:210px;border-bottom:1px solid var(--line);position:relative;overflow:hidden;background:#f4f7fb}
.work-body{padding:18px 18px 20px}
.work-index{font-size:11px;color:#7b8390}
.work-card h3{font-size:18px;margin:7px 0 5px}
.work-card .meta{font-size:11px;color:#747c88;margin:0 0 12px}
.work-card p{font-size:12px;color:#4e5662;margin:0 0 16px}
.tag-link{display:inline-flex;border:1px solid #96acf0;color:var(--accent);padding:4px 8px;font-size:10px}
.tag-link.muted{border-color:#d5dae3;color:#7d8590}
.ui-thumb{padding:20px}
.mini-window{height:100%;display:grid;grid-template-columns:26% 1fr;background:white;border:1px solid #e5eaf1;box-shadow:0 12px 35px rgba(44,55,81,.10)}
.mini-sidebar{background:#eff4ff;border-right:1px solid #e2e8f3}
.mini-content{padding:16px}
.mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.mini-stats span{height:48px;border:1px solid #edf1f6}
.mini-line{height:72px;margin-top:12px;background:linear-gradient(170deg,transparent 48%,rgba(31,78,216,.16) 49%,rgba(31,78,216,.16) 52%,transparent 53%)}
.business-thumb{background:#f7f9fc;padding:26px}
.table-shell{background:#fff;border:1px solid #e5eaf1;padding:12px}
.table-head{height:20px;background:#eef4ff;margin-bottom:10px}
.table-row{display:grid;grid-template-columns:1fr 2fr 1fr;gap:8px;margin:9px 0}
.table-row span{height:18px;background:#f0f2f5}
.web-thumb{background:linear-gradient(180deg,#cfe4ff 0 46%,#fff 46%);padding:36px 24px}
.web-hero{height:72px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;letter-spacing:.2em}
.web-copy{height:9px;width:82%;background:#dfe3e8;margin:26px auto 0}.web-copy.short{width:55%;margin-top:10px}
.mobile-thumb{display:flex;gap:14px;align-items:flex-end;justify-content:center;padding-top:34px;background:#f8f9fb}
.mobile-card{width:90px;height:160px;border:1px solid #d9dee7;background:#fff;border-radius:14px;padding:10px;box-shadow:0 12px 28px rgba(44,55,81,.08)}
.mobile-card.second{transform:translateY(20px)}
.mobile-card span{display:block;height:50px;background:#eaf0ff;border-radius:6px}.mobile-card b,.mobile-card i{display:block;height:8px;background:#e1e5eb;margin-top:12px}.mobile-card i{width:60%}
.section-action{display:flex;justify-content:flex-end;margin-top:24px}
.text-link{font-size:11px;color:var(--accent);font-weight:700;letter-spacing:.04em}
.experience-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:48px}
.experience-item{display:grid;grid-template-columns:58px 1fr;gap:18px;align-items:start}
.line-icon{width:48px;height:48px;border:1px solid #93a7e6;color:var(--accent);display:grid;place-items:center;font-weight:600}
.experience-item h3{font-size:15px;margin:0 0 9px}
.experience-item p{font-size:12px;color:#525a65;margin:0}
.split-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:18px}
.panel{border:1px solid var(--line);background:#fff;padding:36px;min-height:290px}
.skill-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px 16px;margin-top:12px}
.skill-list div{padding:14px;border:1px solid #edf0f5;background:#fbfcfe}
.skill-list strong{display:block;font-size:13px}.skill-list span{display:block;font-size:9px;color:#7d8590;margin-top:4px}
.about-panel{background:linear-gradient(135deg,#fff 0%,#fbfcff 60%,#f2f5fa 100%)}
.about-panel h2{font-size:30px;line-height:1.45;margin:20px 0}
.about-panel p{font-size:13px;color:#525a65;max-width:600px}
.contact-strip{border-top:1px solid var(--line);padding:34px 0}
.contact-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
.contact-label{font-size:11px;color:var(--accent);font-weight:700;letter-spacing:.08em;margin:0 0 4px}
.contact-inner h2{font-size:15px;font-weight:500;margin:0}
.site-footer{border-top:1px solid var(--line);padding:22px 0;color:#7f8793;font-size:10px}
.footer-inner{display:flex;justify-content:space-between;align-items:center}
@media (max-width:980px){
  .nav{display:none}.menu-button{display:block}.mobile-nav{display:none;padding:12px 24px 20px;border-top:1px solid var(--line);background:#fff}
  .mobile-nav.open{display:grid;gap:10px}.mobile-nav a{font-size:13px;padding:8px 0}
  .hero-grid{grid-template-columns:1fr;min-height:auto;padding:72px 0 90px}
  .hero-copy{text-align:center}.hero-visual{min-height:400px}
  .work-grid{grid-template-columns:repeat(2,1fr)}
  .experience-grid{grid-template-columns:1fr;gap:28px}
  .split-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .container{width:min(100% - 28px,1180px)}
  .header-inner{height:66px}.brand-role{display:none}
  .hero-grid{padding:54px 0 70px}.hero h1{font-size:36px}.hero-text{font-size:14px}.desktop-only{display:none}
  .hero-visual{min-height:300px}.desktop-device{width:100%}.mock-layout{grid-template-columns:90px 1fr}.mock-sidebar{padding:12px 8px}.mock-main{padding:12px}.metric-row{gap:6px}.metric-card{padding:9px}.metric-card b{font-size:18px}.phone-device{width:120px;padding:9px}.phone-screen{min-height:220px}
  .section{padding:64px 0}.work-grid{grid-template-columns:1fr}.work-image{height:220px}
  .section-action{justify-content:flex-start}.skill-list{grid-template-columns:repeat(2,1fr)}.panel{padding:26px}
  .about-panel h2{font-size:26px}.contact-inner{align-items:flex-start;flex-direction:column}.button{width:100%}
}