/* Let's Do Us Inc. — umbrella landing page. One page, FR + EN. */
:root{--ink:#14181F;--paper:#FBFAF6;--sand:#F1EDE4;--line:#DED8CC;--muted:#5C6470;--accent:#1D5BCF;--accent-ink:#FFFFFF;--band:#14181F;--band-text:#F1EDE4;color-scheme:light}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){--ink:#EDE9E0;--paper:#14181F;--sand:#1C2129;--line:#2C333D;--muted:#A3ABB5;--accent:#6E9BFF;--accent-ink:#0D1320;--band:#0D1118;--band-text:#EDE9E0;color-scheme:dark}}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--paper);color:var(--ink);font:1.0625rem/1.6 Inter,system-ui,Arial,sans-serif}
a{color:inherit;text-underline-offset:4px}button,input,select,textarea{font:inherit}button{cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
h1,h2,h3,.brand{font-family:Fraunces,Georgia,serif;font-weight:600;letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,4.6vw,3.9rem);line-height:1.05;max-width:20ch;margin:.2em 0 .4em}
h2{font-size:clamp(1.7rem,3vw,2.5rem);line-height:1.1;margin:0 0 .6em}
h3{font-size:1.35rem;line-height:1.2;margin:.2em 0 .3em}
p{max-width:66ch}.lead{font-size:1.2rem;line-height:1.55}.muted{color:var(--muted)}.small{font-size:.875rem}
.eyebrow{font:700 .76rem/1.3 Inter,system-ui,sans-serif;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);margin:0 0 14px}
.wrap{max-width:1120px;margin:auto;padding:88px 16px}
.sand{background:var(--sand)}
.header{min-height:72px;padding:0 max(16px,calc((100vw - 1120px)/2));display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:baseline;gap:8px;text-decoration:none;font-size:1.55rem;line-height:1;white-space:nowrap}
.brand small{font:600 .72rem/1 Inter,system-ui,sans-serif;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
nav{display:flex;gap:20px;align-items:center}nav a{font-size:.9rem;font-weight:600;text-decoration:none;min-height:44px;display:flex;align-items:center;white-space:nowrap}
nav a.lang{border-bottom:2px solid var(--accent)}
.hero .wrap{padding-top:72px;padding-bottom:72px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:end}
.hero-facts{list-style:none;margin:0;padding:0;display:grid;gap:12px;border-left:2px solid var(--accent);padding-left:20px}
.hero-facts li{font-size:.95rem;line-height:1.45}.hero-facts strong{display:block;font-weight:700}
.button{min-height:50px;display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:0 22px;border:0;border-radius:8px;background:var(--accent);color:var(--accent-ink);font:700 .95rem/1.3 Inter,system-ui,sans-serif;text-decoration:none}
.button.secondary{background:transparent;border:2px solid currentColor;color:inherit}
.button:hover{filter:brightness(.95)}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:24px;gap:8px;text-decoration:none;color:inherit;transition:border-color .15s}
.card:hover,.card:focus-visible{border-color:var(--ink)}
.card .tag{font:700 .72rem/1 Inter,system-ui,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.card h3{margin:4px 0 0}.card p{margin:0;font-size:.95rem;line-height:1.5}
.card .site{margin-top:auto;padding-top:14px;font-weight:700;font-size:.9rem;text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:2px}
.mark{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:10px;background:var(--sand);color:var(--ink);font:700 1rem/1 Fraunces,Georgia,serif;margin-bottom:8px}
.principles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px;counter-reset:p}
.principles div{position:relative;padding-top:12px;border-top:2px solid var(--ink)}
.principles h3{margin:0 0 6px}.principles p{margin:0;font-size:.95rem;line-height:1.5}
.band{background:var(--band);color:var(--band-text)}.band h2{color:inherit}.band .eyebrow{color:var(--band-text);opacity:.7}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
form{display:grid;gap:14px;padding:24px;background:var(--paper);border:1px solid var(--line);border-radius:12px;color:var(--ink)}
.fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}
form label{display:grid;gap:6px;font-size:.85rem;font-weight:600}
form input,form select,form textarea{width:100%;min-width:0;min-height:50px;padding:10px 12px;border:1px solid var(--muted);border-radius:8px;background:var(--paper);color:var(--ink);font-size:1rem;font-weight:400}
form textarea{min-height:120px;resize:vertical}
form p{margin:0;font-size:.85rem;line-height:1.45;color:var(--muted)}
.status{min-height:1.4em;font-size:.95rem;font-weight:600}.status.ok{color:#2E7D4F}.status.err{color:#B3261E}
.footer{border-top:1px solid var(--line)}.footer .wrap{padding:40px 16px;display:grid;grid-template-columns:1.2fr .8fr;gap:32px}
.footer p{margin:0 0 8px;font-size:.875rem;line-height:1.5;color:var(--muted)}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px;font-size:.9rem}
@media(max-width:900px){.hero-grid,.split,.grid,.principles,.footer .wrap{grid-template-columns:1fr}.hero-grid{gap:32px}.wrap{padding:64px 16px}.hero .wrap{padding-top:48px;padding-bottom:48px}}
@media(max-width:560px){.fields{grid-template-columns:1fr}nav{gap:12px}nav a{font-size:.85rem}nav a.hide-sm{display:none}.brand{font-size:1.35rem}}