:root{--bg:#f4f7f7;--panel:#fff;--text:#152c32;--muted:#5f7778;--line:#e1e9e8;--accent:#178577;--accent2:#2ac5a4;--soft:#eaf7f3;--hero:linear-gradient(160deg,#e8f6f2 0%,#f4f7f7 60%)}
@media (prefers-color-scheme:dark){:root{--bg:#0d181a;--panel:#14262a;--text:#dbe7e5;--muted:#8fa5a4;--line:#23383b;--soft:#173a31;--accent:#2ac5a4;--hero:linear-gradient(160deg,#10302d 0%,#0d181a 60%)}}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Ubuntu,Cantarell,"Noto Sans",sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
header.top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:20px;padding-bottom:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:21px;letter-spacing:-.5px;color:inherit;text-decoration:none}.brand img{width:40px;height:40px;margin:-3px}
.brand .name span{color:var(--accent2)}
header.top nav{display:flex;gap:22px;font-size:14px;font-weight:600}header.top nav a{color:var(--muted);text-decoration:none}header.top nav a:hover{color:var(--text)}
.hero{background:var(--hero);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center;padding-top:40px;padding-bottom:72px}
.pill{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--accent);background:var(--panel);border:1px solid var(--line);border-radius:99px;padding:5px 12px}
.pill i{width:7px;height:7px;border-radius:50%;background:var(--accent2);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent2) 25%,transparent)}
h1{font-size:clamp(34px,5.4vw,56px);letter-spacing:-2px;line-height:1.04;margin:18px 0 16px}
h1 span{background:linear-gradient(120deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:18px;color:var(--muted);max-width:540px;margin:0}
.cta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin:30px 0 12px}
.btn{display:inline-flex;align-items:center;gap:10px;background:linear-gradient(135deg,#178577,#1fa88e);color:#fff;text-decoration:none;font-weight:700;padding:15px 24px;border-radius:13px;box-shadow:0 10px 24px -8px #178577aa,inset 0 1px 0 #ffffff33;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 14px 28px -8px #178577cc,inset 0 1px 0 #ffffff33}.btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.ghost{font-weight:600;text-decoration:none;color:var(--text);padding:15px 6px}.ghost:hover{color:var(--accent)}
.fine{font-size:13px;color:var(--muted);margin:0}
.visual{position:relative}
.window{display:block;width:100%;height:auto;border-radius:12px;box-shadow:0 40px 80px -30px #0b2b2c88,0 0 0 1px #0b2b2c22;transform:perspective(1400px) rotateY(-9deg) rotateX(3deg)}
.float{position:absolute;width:120px;left:-44px;bottom:-62px;filter:drop-shadow(0 22px 30px #0b2b2c66);animation:float 6s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-8px)}}
@media (prefers-reduced-motion:reduce){.float{animation:none}.btn{transition:none}}
section.block{padding:72px 0 8px}
.kicker{font-size:12px;font-weight:800;letter-spacing:1.6px;text-transform:uppercase;color:var(--accent);margin:0 0 8px}
h2{font-size:clamp(26px,3.4vw,34px);letter-spacing:-1px;line-height:1.15;margin:0 0 10px}.sub{color:var(--muted);max-width:620px;margin:0 0 30px}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.feature{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px}.feature b{display:block;font-size:16px;margin:14px 0 6px}.feature p{margin:0;color:var(--muted);font-size:14px}
.feature i,.step i{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--soft);color:var(--accent)}
.feature svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;counter-reset:step}
.step{position:relative;padding:22px;border-radius:16px;background:var(--panel);border:1px solid var(--line)}.step i{font-style:normal;font-weight:800;font-size:17px}
.step b{display:block;margin:14px 0 6px}.step p{margin:0;color:var(--muted);font-size:14px}
.version{color:var(--muted);margin:0 0 22px}
.oses{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;align-items:start}
.os{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:20px}.os.mine{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent)}
.os h3{margin:0 0 12px;font-size:18px}.os.mine h3::after{content:" · votre système";color:var(--accent);font-size:13px;font-weight:600}
.dl{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:11px;color:inherit;text-decoration:none;margin-bottom:8px;transition:border-color .15s}
.dl:hover{border-color:var(--accent)}.dl.primary{background:var(--soft)}.dl b{display:block;font-size:14px}.dl b em{font-style:normal;font-size:11px;font-weight:700;color:var(--accent);margin-left:4px}
.dl small{color:var(--muted);font-size:12px;word-break:break-all}.arrow{font-size:20px;color:var(--accent)}
.help{color:var(--muted);font-size:13px;margin:10px 2px 0}.help code{font:12px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--soft);border-radius:5px;padding:1px 5px;word-break:break-all}
.notes,.checks{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin-top:14px;font-size:14px}.checks summary{cursor:pointer;font-weight:600}
.checks code{font-size:11px;word-break:break-all;color:var(--muted)}
footer.bottom{border-top:1px solid var(--line);margin-top:72px;padding-top:28px;padding-bottom:40px;color:var(--muted);font-size:13px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}
footer.bottom .brand{font-size:16px}footer.bottom .brand img{width:28px;height:28px}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr;gap:56px;padding-bottom:80px}.features,.oses{grid-template-columns:1fr 1fr}.window{transform:none}.float{width:88px;left:-10px;bottom:-48px}}
@media (max-width:620px){header.top nav a:not(:last-child){display:none}.features,.steps,.oses{grid-template-columns:1fr}}
.error{padding-top:72px;padding-bottom:40px}.error h1{margin-top:6px}
.guide{max-width:820px}.guide h1{font-size:34px;letter-spacing:-1px;margin:28px 0 10px}.guide h2{font-size:22px;margin:34px 0 10px}.guide p,.guide li{color:var(--text)}
.guide table{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden;font-size:14px;margin:12px 0}
.guide th,.guide td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}.guide th{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.guide code{font:13px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--soft);border-radius:5px;padding:1px 5px;word-break:break-all}
.guide li{margin:5px 0}