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

html{
  scroll-behavior:smooth;
}

body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  font-size:14px;
  -webkit-font-smoothing:antialiased;
}

a{
  color:inherit;
  text-decoration:none;
}

.wrap{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* nav */
.site-nav{
  position:fixed;
  top:0;
  left:0;
  right:0;
  padding:0;
  border-bottom:1px solid var(--line);
  background:var(--panel);
  z-index:1000;
}

body{
  padding-top:var(--site-nav-height,69px);
}

.nav-wrap{
  display:flex;
  justify-content:space-between;
  align-items:center;
}

.nav-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:inherit;
}

.nav-brand-mark{
  width:22px;
  height:22px;
  border-radius:5px;
  background:linear-gradient(135deg,var(--radar),var(--amber));
  flex:none;
  box-shadow:0 2px 6px rgba(13,124,116,.12);
}

.nav-brand-text{
  font-size:16px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ink);
}

.nav-brand:hover .nav-brand-text{
  color:var(--radar-deep);
}

.nav-brand-logo{
  display:block;
  height:48px;
  width:auto;
  flex:none;
}

.nav-links{
  display:flex;
  align-items:center;
  gap:20px;
}

.nav-links a{
  font-size:14px;
  color:var(--ink-soft);
  padding:2px 0;
  transition:.12s;
}

.nav-links a:hover{
  color:var(--radar-deep);
}

.nav-links a.active{
  color:var(--radar-deep);
  font-weight:600;
  border-bottom:2px solid var(--radar);
}

.product-nav{
  display:flex;
  align-items:center;
  justify-content:center;
  flex:1;
}

.product-nav:empty{
  display:none;
}

.product-nav-desktop{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:32px;
}

.product-nav-mobile{
  display:none;
  position:relative;
}

.product-nav-link{
  font-size:14px;
  color:var(--ink-soft);
  text-decoration:none;
  padding:2px 0;
  white-space:nowrap;
  transition:.12s;
}

.product-nav-link:hover{
  color:var(--radar-deep);
}

.product-nav-link.active{
  color:var(--radar-deep);
  font-weight:600;
  border-bottom:2px solid var(--radar);
}

.theme-toggle{
  background:transparent;
  border:none;
  color:var(--ink-soft);
  width:42px;
  height:42px;
  border-radius:6px;
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:background .12s;
}

.theme-toggle:hover{
  background:var(--paper);
}

.theme-toggle svg{
  display:block;
  transition:transform .3s ease;
}

.theme-toggle.rotated svg{
  transform:rotate(180deg);
}

/* hero */
.hero{
  position:relative;
  padding:48px 0 28px;
  margin-top:24px;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
}

.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 20% 30%,rgba(37,99,235,.08),transparent 45%),
    radial-gradient(circle at 80% 70%,rgba(245,158,11,.06),transparent 40%);
  pointer-events:none;
}

.hero h1{
  font-size:clamp(34px,5vw,60px);
  font-weight:700;
  line-height:1.08;
  margin:0 0 12px;
  letter-spacing:-.02em;
}

.hero h1 .accent{
  background:linear-gradient(90deg,var(--radar),var(--amber),var(--radar));
  background-size:200% auto;
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  animation:shine 3s linear infinite;
}

.hero-title-suffix{
  font-size:0.75em;
}

@keyframes shine{
  to{background-position:200% center}
}

.hero-desc{
  max-width:720px;
  color:var(--ink-soft);
  font-size:24px;
  line-height:1.6;
  margin-bottom:24px;
}

.hero-desc-static{
  color:var(--ink);
}

.hero-words{
  display:inline-flex;
  align-items:center;
  gap:0.3em;
}

.hero-word{
  display:inline-block;
  color:var(--ink-faint);
  animation:wordGlow 5s ease-in-out infinite;
  animation-delay:calc(var(--i) * 1s);
}

.hero-sep{
  color:var(--line-strong);
}

@keyframes wordGlow{
  0%,10%{color:var(--ink-faint);transform:scale(1)}
  15%,25%{color:var(--radar);transform:scale(1.08);font-weight:600}
  30%,100%{color:var(--ink-faint);transform:scale(1)}
}

/* section */
.sec{
  padding:24px 0;
}

.sec-head{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:24px;
}

.sec-head h2{
  font-size:18px;
  font-weight:700;
}

.sec-head .line{
  flex:1;
  height:1px;
  background:var(--line);
}

.sec-head.center{
  justify-content:center;
}

.sec-head.center .line{
  display:none;
}

.sec-head.center h2{
  font-size:20px;
  font-weight:700;
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
}

.sec-head.center h2::before,
.sec-head.center h2::after{
  content:"";
  flex:1;
  height:1px;
  background:var(--line-strong);
}

/* cards */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
}

.card{
  background:var(--panel);
  border:1px solid var(--line-strong);
  border-radius:5px;
  padding:18px;
  transition:.15s;
  position:relative;
  display:flex;
  flex-direction:column;
}

.card:hover{
  border-color:var(--radar);
  box-shadow:0 4px 16px rgba(37,99,235,.08);
}

:root[data-theme="warm"] .card:hover{
  box-shadow:0 4px 16px rgba(13,124,116,.08);
}

.card-head{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:12px;
}

.card-icon{
  width:64px;
  height:34px;
  border-radius:6px;
  display:flex;
  align-items:center;
  justify-content:center;
  flex-shrink:0;
}

.card-icon.radar{
  background:var(--radar-wash);
  color:var(--radar-deep);
}

.card-icon.amber{
  background:var(--amber-wash);
  color:var(--amber);
}

.card-icon.outline{
  background:var(--bg);
  color:var(--ink-soft);
}

.card-icon svg{
  width:100%;
  height:100%;
}

.card h3{
  font-size:16px;
  font-weight:700;
  margin:0;
  display:flex;
  align-items:baseline;
  gap:8px;
}

.card h3 .position{
  font-size:16px;
  font-weight:700;
  color:var(--ink-soft);
}

.card p{
  font-size:12px;
  color:var(--ink-soft);
  line-height:1.6;
  margin-bottom:12px;
  flex:1;
}

.card-foot{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:8px;
  margin-top:auto;
}

.version{
  font-family:var(--mono);
  font-size:10px;
  color:var(--ink);
  flex-shrink:0;
  padding:3px 8px;
  border-radius:4px;
  font-weight:500;
}

.version.release{
  background:#e8f5e9;
  color:#2e7d32;
}

.version.snapshot{
  background:#e3f2fd;
  color:#1565c0;
}

.tags{
  display:flex;
  flex-wrap:wrap;
  gap:4px;
}

.tag{
  font-size:10px;
  padding:3px 8px;
  background:var(--bg);
  color:var(--ink-soft);
}

.tag.deploy{
  background:#f0f7f6;
  color:#2a6b65;
}

.tag.lang-java{
  background:#fbf5ed;
  color:#8b5a1f;
}

.tag.lang-ts{
  background:#eef3fb;
  color:#3658a8;
}

.tag.lang-python{
  background:#f5f2f8;
  color:#684b85;
}

.tag.lib{
  background:#f6f7f9;
  color:#5a6573;
}

.tag.tech{
  background:#f5f2f8;
  color:#684b85;
}

.tag.state{
  background:var(--radar-wash);
  color:var(--radar-deep);
}

/* toast */
.toast{
  position:fixed;
  bottom:24px;
  left:50%;
  transform:translateX(-50%) translateY(100px);
  padding:10px 20px;
  background:var(--ink);
  color:#fff;
  font-size:13px;
  border-radius:5px;
  box-shadow:0 4px 16px rgba(0,0,0,.15);
  opacity:0;
  transition:all .3s ease;
  z-index:1000;
  pointer-events:none;
  white-space:nowrap;
}

.toast.show{
  transform:translateX(-50%) translateY(0);
  opacity:1;
}

/* overview */
.overview{
  background:var(--panel);
  border:1px solid var(--line-strong);
  border-radius:5px;
  padding:24px 28px;
}

.overview p{
  font-size:13px;
  color:var(--ink-soft);
  line-height:1.75;
  margin-bottom:10px;
}

.overview p:last-child{
  margin-bottom:0;
}

.about-text{
  padding:0 48px;
  color:var(--ink-soft);
  font-size:14px;
  line-height:1.6;
}

.about-text p{
  margin:0;
}

/* footer */
.footer{
  padding:28px 0;
  text-align:center;
  border-top:1px solid var(--line);
  margin-top:16px;
}

.footer p{
  font-family:var(--mono);
  font-size:11px;
  color:var(--ink-faint);
}

/* quick start */
.start-wrap{
  max-width:720px;
  margin:0 auto;
  text-align:center;
}

.start-lead{
  color:var(--ink-soft);
  font-size:14px;
  line-height:1.75;
  margin-bottom:24px;
}

.tech-tags{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:8px;
  margin-bottom:28px;
}

.tech-tag{
  font-size:12px;
  padding:4px 10px;
  border:1px solid var(--line-strong);
  border-radius:4px;
  color:var(--ink-soft);
  background:transparent;
}

.code-block{
  text-align:left;
  background:var(--paper);
  border:1px solid var(--line-strong);
  border-radius:5px;
  padding:16px 20px;
  margin-bottom:20px;
}

.code-block code{
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink);
  word-break:break-all;
}

.start-links{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:center;
  gap:8px 14px;
  font-size:13px;
}

.start-links a{
  color:var(--radar-deep);
}

.start-links a:hover{
  text-decoration:underline;
}

.start-links .sep{
  color:var(--line-strong);
}

/* feature grid (tech stack) */
.feat-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}

.feat{
  display:flex;
  gap:12px;
  align-items:flex-start;
}

.feat-dot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--radar);
  flex:none;
  margin-top:8px;
  box-shadow:0 0 0 4px var(--radar-wash);
}

.feat h4{
  font-size:13px;
  font-weight:700;
  margin-bottom:4px;
  color:var(--ink);
}

.feat p{
  font-size:12px;
  color:var(--ink-soft);
  line-height:1.6;
}

.git-link{
  text-align:center;
  margin-top:28px;
  font-size:13px;
}

.git-link a{
  color:var(--radar-deep);
}

.git-link a:hover{
  text-decoration:underline;
}

@media (max-width:768px){
  .site-nav{
    padding:10px 0;
  }

  .card-grid{
    grid-template-columns:1fr;
  }

  .hero{
    padding:48px 0 24px;
    margin-top:24px;
  }

  .hero h1{
    font-size:28px;
  }

  .hero-desc{
    font-size:16px;
    line-height:1.7;
    text-align:center;
  }

  .hero-desc-static{
    display:block;
    margin-bottom:6px;
  }

  .hero-words{
    display:inline-flex;
    flex-wrap:wrap;
    justify-content:center;
    gap:0.3em 0.6em;
  }

  .hero-sep{
    display:none;
  }

  .about-text{
    padding:0 16px;
    font-size:13px;
  }

  .nav-wrap{
    gap:8px;
  }

  .nav-brand,
  .nav-links{
    display:flex;
    align-items:center;
  }

  .nav-brand{
    flex:0 0 80px;
    justify-content:flex-start;
  }

  .nav-links{
    flex:0 0 60px;
    justify-content:flex-end;
  }

  .nav-brand-logo{
    height:36px;
    width:auto;
  }

  .product-nav{
    justify-content:center;
    flex:1;
  }

  .product-nav-desktop{
    display:none;
  }

  .product-nav-mobile{
    display:flex;
    justify-content:center;
    position:relative;
  }

  .product-nav-current{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:4px 2px;
    background:transparent;
    border:none;
    font-size:20px;
    color:var(--ink);
    cursor:pointer;
  }

  .product-nav-current svg{
    width:24px;
    height:24px;
    transition:transform .2s;
  }

  .product-nav-mobile.open .product-nav-current svg{
    transform:rotate(180deg);
  }

  .product-nav-dropdown{
    display:none;
    position:absolute;
    top:100%;
    left:50%;
    transform:translateX(-50%);
    min-width:180px;
    background:var(--panel);
    border:1px solid var(--line-strong);
    border-top:none;
    border-radius:0 0 6px 6px;
    box-shadow:0 8px 24px rgba(0,0,0,.1);
    padding:6px 0;
    z-index:1001;
  }

  .product-nav-mobile.open .product-nav-dropdown{
    display:block;
  }

  .product-nav-dropdown .product-nav-link{
    display:block;
    padding:10px 16px;
    border-bottom:1px solid var(--line);
    font-size:18px;
    text-align:center;
  }

  .product-nav-dropdown .product-nav-link:last-child{
    border-bottom:none;
  }

  .product-nav-dropdown .product-nav-link.active{
    border-bottom-color:var(--line);
    background:var(--radar-wash);
  }

  .nav-links{
    gap:20px;
  }

  .theme-toggle{
    width:32px;
    height:32px;
  }

  .card{
    padding:16px;
  }

  .card-icon{
    width:56px;
    height:30px;
  }

  .card h3 .position{
    font-size:14px;
  }

  .sec-head.center h2::before,
  .sec-head.center h2::after{
    width:40px;
  }
}