/* ====== Base ====== */
:root{
  --bg: #0b0c10;
  --surface: #11131a;
  --surface-2: #151826;
  --text: #e9eefc;
  --muted: #aab3cc;
  --line: rgba(255,255,255,.10);
  --accent: #6ea8fe;
  --accent-2: #8af0c5;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 16px;
  --container: 1100px;
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 30% -10%, rgba(110,168,254,.25), transparent 55%),
              radial-gradient(900px 500px at 90% 10%, rgba(138,240,197,.18), transparent 55%),
              var(--bg);
  color: var(--text);
  line-height: 1.55;
}

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

.container{
  width: min(var(--container), calc(100% - 2rem));
  margin-inline: auto;
}

.skip-link{
  position: absolute;
  left: -999px;
  top: 0;
  background: #fff;
  color: #000;
  padding: .5rem .75rem;
  border-radius: 10px;
}
.skip-link:focus{ left: 1rem; top: 1rem; }

/* ====== Header ====== */
.site-header{
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(11,12,16,.65);
  border-bottom: 1px solid var(--line);
}

.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .9rem 0;
}

.brand{
  display: flex;
  align-items: center;
  gap: .6rem;
  font-weight: 700;
}
.brand-mark{
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 6px rgba(110,168,254,.12);
}
.brand-name{ letter-spacing: .2px; }

.nav{
  display: flex;
  gap: .2rem;
  padding: .25rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,.03);
}
.nav-link{
  padding: .5rem .75rem;
  border-radius: 999px;
  color: var(--muted);
}
.nav-link:hover{
  color: var(--text);
  text-decoration: none;
  background: rgba(255,255,255,.06);
}

/* ====== Hero ====== */
.hero{
  padding: 3.2rem 0 2rem;
}
.hero-inner{
  display: grid;
  grid-template-columns: 1.25fr .9fr;
  gap: 1.25rem;
  align-items: start;
}

h1{
  margin: 0 0 .75rem;
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -.02em;
}
.lead{
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 60ch;
}

.hero-cta{
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: 1rem 0 1.25rem;
}

.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .75rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  box-shadow: var(--shadow);
  text-decoration: none;
  font-weight: 650;
}
.btn:hover{ text-decoration: none; transform: translateY(-1px); }

.btn-primary{
  background: linear-gradient(135deg, rgba(110,168,254,.95), rgba(138,240,197,.65));
  color: #0b0c10;
  border-color: transparent;
}
.btn-secondary{
  background: rgba(255,255,255,.03);
  color: var(--text);
}

.hero-bullets{
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}
.hero-bullets li{ margin: .25rem 0; }

.hero-card{
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.02));
  border-radius: var(--radius);
  padding: 1.1rem;
  box-shadow: var(--shadow);
}
.hero-card h2{
  margin: 0 0 .5rem;
  font-size: 1.15rem;
}
.hero-card p{
  margin: 0 0 1rem;
  color: var(--muted);
}

.mini-stats{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .6rem;
}
.stat{
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: .65rem .75rem;
  background: rgba(255,255,255,.03);
}
.stat-k{
  display: block;
  font-size: .8rem;
  color: var(--muted);
}
.stat-v{
  display: block;
  font-weight: 700;
  letter-spacing: .2px;
}

/* ====== Links section ====== */
.links{
  padding: 2.2rem 0 2.4rem;
}
.section-head{
  display: grid;
  gap: .35rem;
  margin-bottom: 1.1rem;
}
.section-head h2{
  margin: 0;
  font-size: 1.55rem;
}
.section-head p{
  margin: 0;
  color: var(--muted);
  max-width: 70ch;
}

.links-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.link-card{
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
  display: grid;
  gap: .65rem;
  min-height: 220px;
}
.link-card h3{
  margin: 0;
  font-size: 1.05rem;
}
.link-card h3 a{
  text-decoration: none;
}
.link-card h3 a:hover{
  text-decoration: underline;
}
.link-card p{
  margin: 0;
  color: var(--muted);
}
.meta{
  margin: 0;
  padding-left: 1rem;
  color: var(--muted);
  font-size: .92rem;
}
.card-cta{
  margin-top: auto;
  font-weight: 650;
  text-decoration: none;
  color: var(--text);
  padding-top: .4rem;
  border-top: 1px solid var(--line);
}
.card-cta:hover{ text-decoration: underline; }

/* ====== Content section ====== */
.content{
  padding: 1.2rem 0 3.2rem;
}
.two-cols{
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 1rem;
}
.panel{
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
  border-radius: var(--radius);
  padding: 1.1rem;
  box-shadow: var(--shadow);
}
.panel h2{ margin: 0 0 .6rem; font-size: 1.2rem; }
.panel p{ margin: 0 0 .8rem; color: var(--muted); }
.panel p:last-child{ margin-bottom: 0; }

.checklist{
  margin: 0 0 .7rem;
  padding-left: 1.1rem;
  color: var(--muted);
}
.checklist li{ margin: .25rem 0; }

.muted{ color: var(--muted); }

/* ====== Footer ====== */
.site-footer{
  border-top: 1px solid var(--line);
  background: rgba(11,12,16,.7);
}
.footer-inner{
  padding: 1.25rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
}
.footer-links{
  display: flex;
  gap: .9rem;
}
.footer-links a{
  color: var(--muted);
}
.footer-links a:hover{
  color: var(--text);
  text-decoration: none;
}

/* ====== Responsive ====== */
@media (max-width: 980px){
  .hero-inner{ grid-template-columns: 1fr; }
  .links-grid{ grid-template-columns: repeat(2, 1fr); }
  .two-cols{ grid-template-columns: 1fr; }
  .mini-stats{ grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 520px){
  .nav{ display: none; } /* header plus clean sur mobile */
  .links-grid{ grid-template-columns: 1fr; }
  .footer-inner{ flex-direction: column; align-items: flex-start; }
  .btn{ width: 100%; }
}