:root {
  --black: #000;
  --white: #fff;
  --blue: #0066ff;
  --max: 1320px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--black); }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--white);
  background: var(--black);
  font-family: var(--sans);
  line-height: 1.65;
}
::selection { background: var(--blue); color: var(--white); }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }

.grid-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px),
    radial-gradient(circle at 78% 8%, rgba(0,102,255,.18), transparent 34rem);
  background-size: 48px 48px, 48px 48px, auto;
  mask-image: linear-gradient(to bottom, black, rgba(0,0,0,.85) 58%, transparent);
}
.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 0;
  width: 26rem;
  height: 26rem;
  border-radius: 50%;
  pointer-events: none;
  background: rgba(0,102,255,.13);
  filter: blur(90px);
  transform: translate(-50%,-50%);
  opacity: 0;
  transition: opacity .25s ease;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  min-height: 66px;
  padding: 0 clamp(1rem,3vw,2.8rem);
  border-bottom: 1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.66);
  backdrop-filter: blur(14px);
  transition: background .25s ease, border-color .25s ease;
}
.site-header.scrolled { background: rgba(0,0,0,.9); border-color: rgba(0,102,255,.45); }
.brand { font-family: var(--mono); font-size: .96rem; font-weight: 800; letter-spacing: -.03em; }
.prompt-mark,.brand-cursor { color: var(--blue); }
.brand-cursor { animation: blink 1s steps(1) infinite; }
.nav {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: clamp(.8rem,2.5vw,2.25rem);
  font-family: var(--mono);
  color: rgba(255,255,255,.62);
}
.nav a { transition: color .2s ease; }
.nav a:hover,.nav a:focus-visible { color: var(--blue); }
.github-mini {
  font-family: var(--mono);
  padding: .42rem .7rem;
  border: 1px solid rgba(255,255,255,.18);
  transition: background .2s ease,border-color .2s ease;
}
.github-mini:hover { background: var(--blue); border-color: var(--blue); }

.section {
  position: relative;
  z-index: 1;
  width: min(100%,var(--max));
  margin: 0 auto;
  padding: clamp(5.5rem,9vw,9rem) clamp(1.15rem,4vw,3.5rem);
}
.section-block { border-top: 1px solid rgba(255,255,255,.11); }

.hero {
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0,1.05fr) minmax(22rem,.95fr);
  grid-template-rows: 1fr auto;
  align-items: center;
  gap: clamp(2rem,6vw,6rem);
  padding-top: clamp(8rem,13vw,11rem);
  padding-bottom: 2rem;
}
.hero-copy { align-self: center; }
.eyebrow,.terminal-label,.command-title,.stack-path,.repo-visibility,.repo-footer,.hero-statusbar { font-family: var(--mono); }
.eyebrow { display: flex; align-items: center; gap: .7rem; margin: 0 0 3rem; color: rgba(255,255,255,.55); letter-spacing: .05em; }
.status-dot { width: .55rem; height: .55rem; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 .25rem rgba(0,102,255,.12),0 0 20px rgba(0,102,255,.8); }
.terminal-label { margin: 0 0 .7rem; color: var(--blue); font-size: clamp(.9rem,1.4vw,1.1rem); }
.hero h1 { margin: 0; font-family: var(--mono); font-size: clamp(4.2rem,9.2vw,9rem); line-height: .88; letter-spacing: -.09em; font-weight: 900; }
.hero h1 span { display: block; color: transparent; -webkit-text-stroke: 1.4px var(--blue); text-shadow: 0 0 32px rgba(0,102,255,.18); }
.hero-description { margin: 1.8rem 0 .45rem; color: var(--blue); font-family: var(--mono); font-size: clamp(.76rem,1.25vw,.95rem); }
.hero-jp { max-width: 34rem; margin: 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: .7rem 1rem;
  border: 1px solid rgba(255,255,255,.22);
  background: transparent;
  color: var(--white);
  font-family: var(--mono);
  transition: background .2s ease,border-color .2s ease,transform .2s ease;
}
.button:hover { transform: translateY(-2px); border-color: var(--blue); }
.button.primary { background: var(--blue); border-color: var(--blue); }
.button.primary:hover { background: var(--black); }

.terminal-window { overflow: hidden; align-self: center; border: 1px solid rgba(255,255,255,.19); background: rgba(0,0,0,.86); box-shadow: 18px 18px 0 rgba(0,102,255,.12),0 0 80px rgba(0,102,255,.08); }
.terminal-bar { display: grid; grid-template-columns: auto 1fr auto; gap: 1rem; align-items: center; min-height: 42px; padding: 0 .9rem; border-bottom: 1px solid rgba(255,255,255,.13); background: rgba(255,255,255,.035); font-family: var(--mono); color: rgba(255,255,255,.5); font-size: .65rem; }
.terminal-bar > span:nth-child(2) { justify-self: center; }
.window-dots { display: flex; gap: .38rem; }
.window-dots i { width: .55rem; height: .55rem; border: 1px solid rgba(255,255,255,.5); border-radius: 50%; }
.window-dots i:nth-child(2) { background: var(--blue); border-color: var(--blue); }
.terminal-body { min-height: 28rem; padding: clamp(1rem,3vw,1.7rem); font-family: var(--mono); font-size: clamp(.7rem,1.2vw,.82rem); line-height: 1.75; }
.terminal-body p { margin: 0 0 .65rem; }
.terminal-user { color: var(--blue); font-weight: 800; }
.code-output { overflow-x: auto; margin: .4rem 0 1.2rem; padding: 1rem; border-left: 2px solid var(--blue); background: rgba(255,255,255,.035); color: rgba(255,255,255,.72); }
.code-output code { font: inherit; }
.key { color: var(--blue); }
.string { color: var(--white); }
.terminal-result { margin: -.15rem 0 .9rem 1rem; color: rgba(255,255,255,.53); }
.terminal-result p { margin: 0; }
.terminal-result strong { color: var(--blue); }
.blink-cursor { color: var(--blue); animation: blink .9s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero-statusbar { grid-column: 1/-1; display: flex; justify-content: space-between; gap: 1rem; padding-top: 1rem; border-top: 1px solid rgba(255,255,255,.13); color: rgba(255,255,255,.43); }
.hero-statusbar span:first-child { color: var(--blue); }

.section-head { display: grid; grid-template-columns: 4.5rem 1fr; gap: 1.5rem; align-items: start; margin-bottom: clamp(3.5rem,7vw,6.5rem); }
.section-index { display: grid; width: 3.2rem; height: 3.2rem; place-items: center; border: 1px solid var(--blue); color: var(--blue); font-family: var(--mono); font-size: .75rem; }
.command-title { margin: 0 0 .8rem; color: var(--blue); }
.section-head h2 { margin: 0; font-family: var(--mono); font-size: clamp(2.8rem,7vw,6.5rem); line-height: .9; letter-spacing: -.08em; }
.section-head h2 span { color: var(--blue); }

.about-layout { display: grid; grid-template-columns: minmax(0,.8fr) minmax(28rem,1.2fr); gap: clamp(2.5rem,7vw,7rem); align-items: start; }
.about-text { max-width: 38rem; }
.about-text p { color: rgba(255,255,255,.68); }
.about-text .lead { margin-top: 0; color: var(--white); font-size: clamp(1.35rem,2.4vw,2rem); line-height: 1.5; letter-spacing: -.03em; }
.about-links { margin-top: 2rem; }
.about-links a { display: inline-block; padding-bottom: .2rem; border-bottom: 1px solid var(--blue); color: var(--blue); font-family: var(--mono); }
.editor { border: 1px solid rgba(255,255,255,.16); background: rgba(0,0,0,.78); }
.editor-tabs { display: flex; border-bottom: 1px solid rgba(255,255,255,.12); font-family: var(--mono); color: rgba(255,255,255,.42); }
.editor-tabs span { padding: .8rem 1rem; border-right: 1px solid rgba(255,255,255,.1); }
.editor-tabs .active { color: var(--white); border-top: 2px solid var(--blue); background: rgba(0,102,255,.07); }
.editor-code { display: grid; grid-template-columns: 2.5rem 1fr; padding: 1.25rem 0; font-family: var(--mono); line-height: 1.95; }
.line-no { padding-right: .8rem; text-align: right; color: rgba(255,255,255,.24); user-select: none; }
.editor-code code { padding-left: 1rem; border-left: 1px solid rgba(255,255,255,.07); color: rgba(255,255,255,.7); }
.editor-code b { color: var(--blue); }
.editor-code em { color: var(--white); font-style: normal; }

.stack-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1px; border: 1px solid rgba(255,255,255,.14); background: rgba(255,255,255,.14); }
.stack-card { min-height: 13rem; padding: clamp(1.4rem,3vw,2.2rem); background: var(--black); transition: background .22s ease; }
.stack-card:hover { background: rgba(0,102,255,.1); }
.stack-path { display: block; margin-bottom: 2.2rem; color: var(--blue); }
.stack-card strong { display: block; font-family: var(--mono); font-size: clamp(1.25rem,2.5vw,2rem); }
.stack-card p { margin: .5rem 0 0; color: rgba(255,255,255,.45); font-family: var(--mono); text-transform: lowercase; }
.command-strip { display: flex; flex-wrap: wrap; margin-top: 1rem; border: 1px solid rgba(255,255,255,.14); font-family: var(--mono); color: rgba(255,255,255,.58); }
.command-strip span { flex: 1 1 13rem; padding: .8rem 1rem; border-right: 1px solid rgba(255,255,255,.1); }
.command-strip span:last-child { border-right: 0; }

.repo-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; }
.repo-card { position: relative; min-height: 24rem; padding: clamp(1.4rem,3vw,2rem); border: 1px solid rgba(255,255,255,.16); background: rgba(0,0,0,.78); transition: border-color .25s ease,transform .25s ease,box-shadow .25s ease; }
a.repo-card:hover { border-color: var(--blue); transform: translateY(-4px); box-shadow: 12px 12px 0 rgba(0,102,255,.11); }
.repo-card.featured::before { content: "FEATURED"; position: absolute; top: 0; right: 0; padding: .45rem .7rem; background: var(--blue); font-family: var(--mono); font-size: .58rem; letter-spacing: .08em; }
.repo-topline,.repo-title-row,.repo-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.repo-icon { display: grid; width: 2.3rem; height: 2.3rem; place-items: center; border: 1px solid var(--blue); color: var(--blue); font-family: var(--mono); }
.repo-visibility { color: rgba(255,255,255,.45); }
.repo-title-row { margin-top: 2.4rem; }
.repo-title-row h3 { margin: 0; font-family: var(--mono); font-size: clamp(2.4rem,5vw,4.5rem); letter-spacing: -.07em; }
.repo-title-row > span { color: var(--blue); font-size: 1.5rem; }
.repo-subtitle { margin: -.2rem 0 1.4rem; color: var(--blue); font-family: var(--mono); }
.repo-description { max-width: 47rem; color: rgba(255,255,255,.68); }
.repo-tags { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.5rem; }
.repo-tags span { padding: .35rem .55rem; border: 1px solid rgba(0,102,255,.5); color: rgba(255,255,255,.8); font-family: var(--mono); }
.repo-footer { position: absolute; left: clamp(1.4rem,3vw,2rem); right: clamp(1.4rem,3vw,2rem); bottom: 1.3rem; justify-content: flex-start; color: rgba(255,255,255,.6); }

.readme-block { margin-top: 1rem; border: 1px solid rgba(255,255,255,.14); }
.readme-head { display: flex; justify-content: space-between; padding: .7rem 1rem; border-bottom: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.62); font-family: var(--mono); }
.readme-content { display: grid; grid-template-columns: auto 1fr; gap: 1rem; padding: clamp(1.4rem,4vw,2.5rem); }
.readme-content .hash { color: var(--blue); font-family: var(--mono); font-size: 2rem; line-height: 1; }
.readme-content strong { font-family: var(--mono); font-size: clamp(1.25rem,3vw,2.2rem); }
.readme-content p { margin: .5rem 0 0; color: rgba(255,255,255,.55); }

.contact { min-height: 65svh; }
.footer { position: relative; z-index: 1; display: flex; justify-content: space-between; gap: 1rem; width: min(100%,var(--max)); margin: 0 auto; padding: 1.3rem clamp(1.15rem,4vw,3.5rem) 2rem; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.65); font-family: var(--mono); }
.footer a:hover { color: var(--blue); }

.reveal { opacity: 0; transform: translateY(.7rem); transition: opacity .42s cubic-bezier(.2,.8,.2,1),transform .42s cubic-bezier(.2,.8,.2,1); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .site-header { grid-template-columns: auto 1fr; }
  .hero { grid-template-columns: 1fr; grid-template-rows: auto auto auto; padding-top: 8.5rem; }
  .terminal-window { width: 100%; }
  .hero-statusbar { grid-column: auto; }
  .about-layout { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .section { padding-inline: 1rem; }
  .hero { min-height: auto; padding-top: 7.5rem; padding-bottom: 1.5rem; }
  .hero h1 { font-size: clamp(3.3rem,18vw,5.8rem); }
  .eyebrow { margin-bottom: 2rem; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .hero-statusbar { display: grid; grid-template-columns: 1fr 1fr; }
  .section-head { grid-template-columns: 3.2rem 1fr; gap: .8rem; }
  .section-index { width: 2.5rem; height: 2.5rem; }
  .section-head h2 { font-size: clamp(2.45rem,13vw,4rem); }
  .stack-grid { grid-template-columns: 1fr; }
  .stack-card { min-height: 10rem; }
  .repo-card { min-height: 25rem; }
  .repo-footer { flex-wrap: wrap; }
  .footer { flex-wrap: wrap; }
}

@media (hover:none),(pointer:coarse) { .cursor-glow { display: none; } }
@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}