* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #04060a;
  --fg: #d8e4f0;
  --muted: rgba(216,228,240,.45);
  --accent: #5eead4;
  --accent2: #b794ff;
  --warn: #fbbf24;
  --grid: rgba(94,234,212,.05);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: "SF Mono", "JetBrains Mono", "Roboto Mono", ui-monospace, monospace;
  overflow-x: hidden;
  cursor: none;
  /* 网格底纹 */
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 48px 48px;
}

.jp { font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif; }

#flow {
  position: fixed; inset: 0;
  width: 100vw; height: 100vh;
  z-index: 0; pointer-events: none;
}

/* 扫描线 */
body::after {
  content: "";
  position: fixed; inset: 0;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,0) 0px, rgba(0,0,0,0) 2px, rgba(0,0,0,.18) 3px);
  pointer-events: none; z-index: 1;
  mix-blend-mode: multiply;
}

/* 光标 */
.cursor {
  position: fixed; width: 16px; height: 16px;
  border: 1px solid var(--accent);
  pointer-events: none; z-index: 9999;
  transform: translate(-50%, -50%);
  mix-blend-mode: screen;
  transition: width .2s, height .2s, background .2s;
}
.cursor::before {
  content: ""; position: absolute; inset: 50%;
  width: 3px; height: 3px; transform: translate(-50%,-50%);
  background: var(--accent); border-radius: 50%;
}
.cursor.hot { width: 36px; height: 36px; background: rgba(94,234,212,.08); }

/* HUD */
.hud {
  position: fixed; z-index: 5;
  font-size: .68rem; letter-spacing: .15em;
  color: var(--muted); opacity: 0;
  display: flex; flex-direction: column; gap: .2rem;
}
.hud.tl { top: 1.2rem; left: 1.5rem; }
.hud.tr { top: 1.2rem; right: 1.5rem; text-align: right; align-items: flex-end; }
.hud.bl { bottom: 1.2rem; left: 1.5rem; }
.hud.br { bottom: 1.2rem; right: 1.5rem; text-align: right; align-items: flex-end; }
.hud-label { color: var(--accent); font-weight: 600; }
.hud-val { color: var(--fg); }
.hud-val.ok { color: var(--accent); }
.hud-val.ok::before { content: ""; }

/* HERO */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  z-index: 2; text-align: center; padding: 2rem;
}

.hero-pre {
  font-size: clamp(.6rem, 1.4vw, .85rem);
  letter-spacing: .25em;
  color: var(--muted);
  margin-bottom: 1.5rem;
  opacity: 0;
  text-transform: uppercase;
}
.hero-pre .jp { color: var(--accent2); }
.bracket { color: var(--accent); margin: 0 .4rem; }

.word {
  font-size: clamp(3.5rem, 14vw, 11rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  display: inline-flex;
  background: linear-gradient(120deg, var(--accent), var(--accent2), #fff, var(--accent));
  background-size: 300% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 40px rgba(94,234,212,.3));
}
.char, .dot {
  display: inline-block;
  opacity: 0;
  transform: translateY(80px) rotateX(-90deg) scale(.6);
  transform-origin: bottom;
}
.dot { color: var(--warn); }

.tag {
  margin-top: 1.4rem;
  font-size: clamp(.75rem, 1.6vw, 1rem);
  color: var(--muted);
  letter-spacing: .35em;
  text-transform: uppercase;
  opacity: 0;
}
.tag .jp { color: var(--accent2); letter-spacing: .1em; font-size: 1.1em; }

.cta { position: absolute; bottom: 3rem; opacity: 0; }
.cta a {
  color: var(--fg);
  text-decoration: none;
  font-size: .8rem; letter-spacing: .25em;
  padding: .7rem 1.6rem;
  border: 1px solid var(--accent);
  border-radius: 2px;
  position: relative;
  transition: all .3s;
  background: rgba(94,234,212,.04);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}
.cta a:hover {
  background: rgba(94,234,212,.15);
  box-shadow: 0 0 24px rgba(94,234,212,.4);
  letter-spacing: .35em;
}
.cta .jp { color: var(--accent); margin-left: .5em; }

/* SITES */
.sites {
  position: relative; z-index: 2;
  padding: 8rem 6vw 4rem;
  max-width: 1200px; margin: 0 auto;
}

.sites-title {
  font-size: clamp(1.3rem, 3.4vw, 2.1rem);
  font-weight: 600;
  margin-bottom: 3rem;
  opacity: 0;
  display: flex; align-items: baseline; gap: .8rem;
  border-bottom: 1px solid rgba(94,234,212,.2);
  padding-bottom: 1rem;
}
.sites-title .idx { color: var(--accent); font-weight: 400; }
.sites-title .sub {
  margin-left: auto;
  font-size: .9rem;
  color: var(--accent2);
  letter-spacing: .15em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1px;
  background: rgba(94,234,212,.12);
  border: 1px solid rgba(94,234,212,.12);
}

.card {
  position: relative;
  display: flex; flex-direction: column; gap: .25rem;
  min-height: 150px;
  padding: 1.8rem 1.5rem;
  background: var(--bg);
  text-decoration: none;
  color: var(--fg);
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
  transition: transform .4s cubic-bezier(.2,.8,.2,1), background .3s;
}
.card::before {
  content: "";
  position: absolute; top: 0; left: 0;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform .4s;
}
.card:hover {
  background: rgba(94,234,212,.06);
  transform: translateY(0);
}
.card:hover::before { transform: scaleX(1); }
.card-id {
  font-size: .65rem; letter-spacing: .2em;
  color: var(--accent); opacity: .7;
}
.card-name {
  font-size: 1.7rem; font-weight: 700;
  letter-spacing: -.02em; margin-top: .3rem;
}
.card i {
  font-style: normal; font-size: .72rem;
  color: var(--muted); letter-spacing: .08em;
  text-transform: uppercase;
}
.card-jp {
  font-size: .75rem; color: var(--accent2);
  margin-top: auto; padding-top: .5rem;
  opacity: .8;
}
.card-jp::before { content: "◢ "; color: var(--accent); }

.sites-foot {
  margin-top: 2rem; padding-top: 1.2rem;
  border-top: 1px dashed rgba(216,228,240,.1);
  font-size: .7rem; color: var(--muted);
  display: flex; gap: 2rem; flex-wrap: wrap;
  opacity: 0;
}
.sites-foot .jp { color: var(--accent2); }

/* FOOTER */
.foot {
  position: relative; z-index: 2;
  padding: 2rem 6vw;
  border-top: 1px solid rgba(94,234,212,.12);
  display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 1rem;
  font-size: .72rem; letter-spacing: .15em;
  color: var(--muted);
}
.foot .jp { color: var(--accent2); }
.foot-r { color: var(--accent); }

@media (max-width: 640px) {
  body { cursor: auto; }
  .cursor { display: none; }
  .hud { font-size: .58rem; }
  .hud.tl, .hud.tr { top: .7rem; }
  .hud.tl { left: .8rem; } .hud.tr { right: .8rem; }
  .hud.bl, .hud.br { bottom: .7rem; }
  .hud.bl { left: .8rem; } .hud.br { right: .8rem; }
  .sites { padding: 5rem 5vw 3rem; }
  .sites-title .sub { display: none; }
}