.nav{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding-top:22px;padding-bottom:22px}
.brand{display:inline-flex;align-items:center;gap:12px;min-height:44px;text-decoration:none}
.brand-name{font-family:var(--serif);font-size:28px;letter-spacing:-.02em}
.nav nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px 28px}
.navl{text-decoration:none;font-size:15px;min-height:44px;display:inline-flex;align-items:center;color:var(--mute);transition:color .2s}
.navl:hover{color:var(--fg)}
@media(max-width:820px){.navl{display:none}}
.hero{padding-top:56px;padding-bottom:56px}
.hero-in{display:flex;flex-direction:column;gap:30px;max-width:1040px}
h1{margin:0;font-family:var(--serif);font-weight:300;font-size:clamp(46px,9vw,124px);line-height:.96;letter-spacing:-.04em}
.cta-row{display:flex;flex-wrap:wrap;align-items:center;gap:16px 28px}
.s{position:relative;display:inline-block;white-space:nowrap;padding:0 .1em;margin:0 -.1em;border-radius:2px;animation:sb-hl 8s ease-in-out infinite;animation-delay:1s}
.s::after{content:"";position:absolute;top:4%;bottom:4%;left:0;right:0;background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left center;animation:sb-bar 8s cubic-bezier(.7,0,.2,1) infinite;animation-delay:1s}
.s::before{content:attr(data-l);position:absolute;inset:0;z-index:1;display:flex;align-items:center;justify-content:center;font:500 .22em/1 var(--mono);letter-spacing:.1em;color:#0E0F13;opacity:0;animation:sb-lab 8s ease infinite;animation-delay:1s}
@keyframes sb-hl{0%,6%{color:var(--fg)}10%,22%{color:var(--accent)}26%,100%{color:var(--fg)}}
@keyframes sb-bar{0%,20%{transform:scaleX(0)}30%,86%{transform:scaleX(1)}94%,100%{transform:scaleX(0)}}
@keyframes sb-lab{0%,30%{opacity:0}36%,84%{opacity:1}90%,100%{opacity:0}}
@media(prefers-reduced-motion:reduce){.s::after{transform:scaleX(1)}.s::before{opacity:1}}

/* démonstration */
.demo-sec{padding-bottom:40px}
.demo{background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden;box-shadow:0 40px 90px -40px rgba(0,0,0,.7)}
.demo-top{display:flex;align-items:center;gap:14px;padding:12px 18px;border-bottom:1px solid var(--line)}
.dots{display:inline-flex;gap:6px}.dots i{width:10px;height:10px;border-radius:50%;background:var(--line)}
.demo-title{font:500 13px var(--mono);letter-spacing:.04em;color:var(--mute);flex:1}
.demo-state{font:500 12px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.demo-body{display:grid;grid-template-columns:200px 1fr;min-height:420px}
.steps{list-style:none;margin:0;padding:18px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:4px}
.steps li{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:4px;font-size:14px;color:var(--mute);transition:color .3s,background .3s}
.steps li i{width:8px;height:8px;border-radius:50%;border:1px solid var(--mute);transition:all .3s}
.steps li.on{color:var(--fg);background:rgba(236,233,225,.06)}.steps li.on i{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 4px rgba(228,104,76,.22)}
.steps li.past{color:var(--fg)}.steps li.past i{background:var(--fg);border-color:var(--fg)}
.stage{position:relative;padding:22px;display:flex;flex-direction:column;gap:16px}
.drop{border:1px dashed var(--line);border-radius:8px;min-height:130px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:18px;transition:border-color .4s,background .4s}
.drop.hot{border-color:var(--accent);background:rgba(228,104,76,.07)}
.drop-msg{color:var(--mute);font-size:15px}
.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;min-height:36px}
.chip{display:inline-flex;align-items:center;gap:10px;padding:8px 14px;border:1px solid var(--line);border-radius:4px;font:500 12px var(--mono);opacity:0;transform:translateY(-26px);transition:opacity .5s,transform .6s cubic-bezier(.2,.7,.2,1),border-color .4s,color .4s}
.chip.in{opacity:1;transform:none}.chip.enc{border-color:var(--accent);color:var(--accent)}
.chip small{color:var(--mute);font-weight:400}
.paper{position:relative;background:#F6F4EE;color:#16161C;border-radius:4px;padding:22px 26px;font:400 15px/1.75 var(--serif);overflow:hidden;box-shadow:0 20px 40px -24px rgba(0,0,0,.6)}
.paper p{margin:0 0 10px}
.page-label{color:#6b6c74;margin-bottom:10px}
.beam{position:absolute;left:0;right:0;height:46px;top:-60px;background:linear-gradient(to bottom,transparent,rgba(228,104,76,.22),transparent);border-bottom:1px solid rgba(228,104,76,.6);pointer-events:none}
.e{position:relative;display:inline-block;white-space:nowrap;padding:0 .12em;margin:0 -.12em;border-radius:2px;background-image:linear-gradient(#14151A,#14151A);background-repeat:no-repeat;background-position:left center;background-size:0% 100%;transition:background-size .5s cubic-bezier(.7,0,.2,1),color .15s linear .3s,background-color .3s,box-shadow .3s}
.e.acc{background-color:rgba(228,104,76,.16);box-shadow:inset 0 -2px 0 #C4472B}
.e.review.acc{background-color:rgba(214,160,40,.2);box-shadow:inset 0 -2px 0 #C58A10}
.e.done{background-size:100% 100%;background-color:transparent;box-shadow:none;color:transparent}
.e::before{content:attr(data-l);position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font:500 .6em/1 var(--mono);letter-spacing:.08em;color:#F3F1EB;opacity:0;transition:opacity .3s ease .4s}
.e.done::before{opacity:1}
.flag{margin-top:8px;font:400 13px var(--sans);color:#6b3a00;background:#FFF3D6;border-left:3px solid #C58A10;padding:8px 12px;opacity:0;transform:translateY(6px);transition:all .4s}.flag.on{opacity:1;transform:none}.flag.ok{background:#E6F2EA;color:#1E5A38;border-color:#1E7A4A}
.side{display:flex;flex-direction:column;gap:12px}
.bars>div:first-child{display:flex;justify-content:space-between;font-size:14px;color:var(--mute)}.bars b{font:500 22px var(--mono);color:var(--fg)}
.meter{height:3px;background:var(--line);border-radius:2px;overflow:hidden;margin-top:6px}.meter i{display:block;height:100%;width:0;background:var(--accent);transition:width .4s}
.map{width:100%;border-collapse:collapse;font:400 12px var(--mono)}.map td{padding:6px 8px;border-bottom:1px solid var(--line);color:var(--mute)}.map td:first-child{color:var(--fg)}
.map tr{opacity:0;transform:translateX(-8px);transition:all .4s}.map tr.on{opacity:1;transform:none}
.checks{display:grid;gap:6px}
.chk{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--mute);opacity:.35;transition:all .4s}
.chk i{width:16px;height:16px;border-radius:50%;border:1px solid var(--mute);position:relative}
.chk.on{opacity:1;color:var(--fg)}.chk.on i{background:var(--ok);border-color:var(--ok)}
.chk.on i::after{content:"";position:absolute;left:4px;top:1.5px;width:4px;height:8px;border:solid #0E0F13;border-width:0 2px 2px 0;transform:rotate(45deg)}
.result{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.rc{border:1px solid var(--line);border-radius:6px;padding:14px;display:flex;flex-direction:column;gap:6px;animation:pop .5s cubic-bezier(.2,.7,.2,1) both}
.rc:nth-child(2){animation-delay:.12s}.rc:nth-child(3){animation-delay:.24s}.rc b{font-family:var(--serif);font-weight:400;font-size:17px}.rc small{color:var(--mute);font-size:13px}
.demo-foot{display:flex;align-items:center;gap:18px;padding:10px 18px;border-top:1px solid var(--line)}
.prog{flex:1;height:2px;background:var(--line)}.prog i{display:block;height:100%;width:0;background:var(--accent)}
@media(max-width:760px){.demo-body{grid-template-columns:1fr}.steps{flex-direction:row;flex-wrap:wrap;border-right:0;border-bottom:1px solid var(--line)}.result{grid-template-columns:1fr}.paper{font-size:14px;padding:16px}}

.strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding-top:40px;padding-bottom:70px}
.strip div{border-top:1px solid var(--line);padding-top:16px;display:flex;flex-direction:column;gap:4px}
.strip b{font:300 clamp(40px,5vw,64px)/1 var(--serif);letter-spacing:-.03em}.strip span{color:var(--mute);font-size:14px}
@media(max-width:700px){.strip{grid-template-columns:1fr 1fr}}
.sec{padding-top:70px;padding-bottom:70px}
.sec-head{display:flex;flex-direction:column;gap:18px;margin-bottom:40px;align-items:flex-start}
.grid4{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:960px){.grid4{grid-template-columns:1fr 1fr}}@media(max-width:620px){.grid4{grid-template-columns:1fr}}
.fcard{border:1px solid var(--line);border-radius:6px;padding:26px;display:flex;flex-direction:column;gap:12px;transition:transform .35s,border-color .35s}
.fcard:hover{transform:translateY(-4px);border-color:rgba(236,233,225,.4)}
.fcard h3{margin:0;font:400 24px/1.2 var(--serif)}.fcard p{margin:0;color:var(--mute);line-height:1.6;font-size:15px}
.seclist{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
@media(max-width:760px){.seclist{grid-template-columns:1fr}}
.seclist li{display:flex;flex-direction:column;gap:6px;padding:22px 0;border-top:1px solid var(--line)}.seclist b{font:400 22px var(--serif)}.seclist span{color:var(--mute);line-height:1.6;font-size:15px}
.note{margin:30px 0 0;color:var(--mute);font-size:15px;max-width:640px}
.toggle{display:inline-flex;border:1px solid var(--line);border-radius:6px;padding:3px}
.seg{min-height:44px;padding:0 20px;border:0;border-radius:4px;background:transparent;color:var(--mute);font:500 15px/1 var(--sans);cursor:pointer;transition:background .25s,color .25s}.seg[aria-pressed=true]{background:var(--fg);color:var(--ink-on)}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}@media(max-width:900px){.plans{grid-template-columns:1fr}}
.plan{border:1px solid var(--line);border-radius:6px;padding:30px;display:flex;flex-direction:column;gap:18px}
.plan.featured{border-color:var(--accent);background:rgba(228,104,76,.05)}
.plan h3{margin:0;font:400 28px var(--serif)}.price{display:flex;align-items:baseline;gap:10px}.price b{font:300 52px/1 var(--serif);letter-spacing:-.03em}.price span{color:var(--mute);font-size:14px}
.plan ul{list-style:none;margin:0 0 6px;padding:0;display:flex;flex-direction:column;gap:10px;color:var(--mute);font-size:15px}.plan li{padding-left:18px;position:relative}.plan li::before{content:"";position:absolute;left:0;top:.6em;width:8px;height:1px;background:var(--accent)}
.plan .btn{margin-top:auto}
.final{padding-top:60px;padding-bottom:110px;display:flex;flex-direction:column;gap:30px;align-items:flex-start}
.foot{display:flex;justify-content:space-between;padding-top:24px;padding-bottom:40px;border-top:1px solid var(--line);color:var(--mute);font-size:14px}