.v4-shell{--bg:#1f2f46;--bg-soft:#283448;--bg-deep:#0a0e14;--paper:#f5f5f1;--text:#f5f5f1;--text-muted:#9aa6b8;--text-dim:#6b7793;--line:#4a5970;--primary:#2563eb;--primary-glow:rgba(37,99,235,0.25);--warning:#f2b705;--focus:#4f8df7;--font-sans:"Avenir Next","Inter Tight",Inter,system-ui,-apple-system,sans-serif;--font-serif:"Source Serif 4",Georgia,serif;--font-mono:"JetBrains Mono","SF Mono",Menlo,monospace;--header-h:48px;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden;position:relative}.v4-shell *,.v4-shell :after,.v4-shell :before{box-sizing:border-box}.v4-shell button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}.v4-shell .v4-header{position:fixed;top:0;left:0;right:0;height:var(--header-h);display:flex;align-items:center;justify-content:center;padding:0 32px;z-index:50;background:rgba(31,47,70,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.v4-shell .v4-version-links{position:absolute;right:32px}.v4-shell .v4-brand{font-family:var(--font-sans);font-weight:600;font-size:28px;letter-spacing:-.015em;color:var(--text);text-decoration:none;display:inline-flex;align-items:baseline;gap:2px}.v4-shell .v4-brand .plumb-icon{display:inline-block;width:.6ch;height:1em;position:relative;margin:0 1px;transform:translateY(2px)}.v4-shell .v4-brand .plumb-icon:before{content:"";position:absolute;top:0;bottom:30%;left:50%;width:1.5px;background:var(--primary);transform:translateX(-50%)}.v4-shell .v4-brand .plumb-icon:after{content:"";position:absolute;bottom:8%;left:50%;width:.45ch;height:.45ch;background:var(--primary);border-radius:50% 50% 50% 50%/30% 30% 70% 70%;transform:translateX(-50%) rotate(45deg)}.v4-shell .v4-version-links{display:flex;gap:8px;align-items:center}.v4-shell .v4-link{font-size:11px;letter-spacing:.06em;text-transform:uppercase;font-weight:500;color:var(--text-dim);text-decoration:none;padding:4px 8px;border:1px solid var(--line);border-radius:2px;transition:color .16s ease,border-color .16s ease}.v4-shell .v4-link:hover{color:var(--text);border-color:var(--text-muted)}html:has(.v4-shell){scroll-snap-type:y mandatory;scroll-padding-top:var(--header-h,48px)}@media (max-width:768px){html:has(.v4-shell){scroll-snap-type:none}}@media (prefers-reduced-motion:reduce){html:has(.v4-shell){scroll-snap-type:none}}.v4-shell section.v4-section{display:grid;grid-template-columns:1fr 1fr;min-height:calc(100vh - var(--header-h, 48px));width:100%;border-bottom:1px solid rgba(74,89,112,.15);scroll-snap-align:start;scroll-margin-top:var(--header-h,48px)}.v4-shell section.v4-section .left-pane,.v4-shell section.v4-section .right-pane{display:flex;flex-direction:column;justify-content:center;padding:0 48px}.v4-shell section.v4-section .left-pane{padding-right:64px}.v4-shell section.v4-section .right-pane{background:var(--bg-soft);align-items:center;justify-content:center;padding:48px;position:relative;overflow:hidden}.v4-shell section.v4-section.alt .left-pane{order:2;background:var(--bg)}.v4-shell section.v4-section.alt .right-pane{order:1;background:var(--bg-soft)}.v4-shell .page-num{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--primary);text-transform:uppercase;font-weight:500;margin:0 0 16px;display:flex;align-items:center;gap:10px}.v4-shell .page-num:before{content:"";display:inline-block;width:20px;height:1px;background:var(--primary)}.v4-shell .feature-title{font-family:var(--font-serif);font-size:clamp(28px,3.2vw,46px);font-weight:400;line-height:1.1;letter-spacing:-.015em;color:var(--text);margin:0 0 24px;text-wrap:balance}.v4-shell .feature-copy{font-family:var(--font-sans);font-size:17px;line-height:1.6;color:var(--text-muted);max-width:38ch;margin:0}.v4-shell .hero-title{font-family:var(--font-serif);font-size:clamp(32px,4vw,58px);font-weight:400;line-height:1.08;letter-spacing:-.02em;color:var(--text);margin:0 0 20px;text-wrap:balance}.v4-shell .hero-slogan{font-family:var(--font-sans);font-size:18px;line-height:1.5;color:var(--text-muted);font-style:italic;margin:0;max-width:36ch}.v4-shell [data-reveal]{opacity:0;transform:translateY(20px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1);transition-delay:var(--reveal-delay,0s)}.v4-shell [data-reveal].is-revealed{opacity:1;transform:none}@media (prefers-reduced-motion:reduce){.v4-shell [data-reveal]{opacity:1!important;transform:none!important;transition:none!important}}.v4-shell .macbook{position:relative;width:280px}.v4-shell .macbook-screen{background:#1a1a2e;border-radius:8px 8px 0 0;padding:4px;border:2px solid #3a3a5c;border-bottom:none;position:relative}.v4-shell .macbook-screen:before{content:"";display:block;width:6px;height:6px;border-radius:50%;background:#3a3a5c;margin:4px auto 6px}.v4-shell .macbook-screen-inner{background:var(--primary);border-radius:4px;aspect-ratio:16/10;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.v4-shell .macbook-screen-inner:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 40%,rgba(255,255,255,.08) 0,transparent 70%)}.v4-shell .macbook-base{height:12px;background:linear-gradient(180deg,#2a2a4a,#1a1a2e);border-radius:0 0 2px 2px;border:2px solid #3a3a5c;border-top:none}.v4-shell .macbook-stand{height:6px;background:#1a1a2e;border-radius:0 0 4px 4px;width:60%;margin:0 auto;border:1.5px solid #2a2a4a;border-top:none}.v4-shell .macbook-foot{height:3px;background:#2a2a4a;border-radius:2px;width:90%;margin:0 auto}.v4-shell .iphone{width:88px;background:#1a1a2e;border-radius:18px;padding:8px 4px;border:2px solid #3a3a5c;position:relative}.v4-shell .iphone-notch{width:30px;height:6px;background:#0a0e14;border-radius:4px;margin:0 auto 4px}.v4-shell .iphone-screen{background:var(--primary);border-radius:12px;aspect-ratio:9/16;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.v4-shell .iphone-screen:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 30%,rgba(255,255,255,.1) 0,transparent 60%)}.v4-shell .iphone-home{width:32px;height:3px;background:#3a3a5c;border-radius:2px;margin:6px auto 0}.v4-shell .device-logo{width:36px;height:36px;position:relative;z-index:1}.v4-shell .device-logo-sm{width:18px;height:18px;position:relative;z-index:1}.v4-shell .chat-window{width:100%;max-width:380px;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:16px;display:flex;flex-direction:column;gap:12px;font-family:var(--font-sans);font-size:14px}.v4-shell .chat-msg{display:flex;flex-direction:column;gap:4px}.v4-shell .chat-msg.user{align-items:flex-end}.v4-shell .chat-msg.ai{align-items:flex-start}.v4-shell .chat-bubble{max-width:80%;padding:10px 14px;border-radius:12px;line-height:1.4}.v4-shell .chat-msg.user .chat-bubble{background:var(--primary);color:#fff;border-radius:12px 12px 2px 12px}.v4-shell .chat-msg.ai .chat-bubble{color:var(--text)}.v4-shell .chat-dots,.v4-shell .chat-msg.ai .chat-bubble{background:var(--bg-soft);border-radius:12px 12px 12px 2px;border:1px solid var(--line)}.v4-shell .chat-dots{display:flex;gap:4px;padding:10px 14px;width:-moz-fit-content;width:fit-content}.v4-shell .chat-dots span{width:6px;height:6px;border-radius:50%;background:var(--text-dim);animation:dot-pulse 1.2s ease-in-out infinite}.v4-shell .chat-dots span:nth-child(2){animation-delay:.2s}.v4-shell .chat-dots span:nth-child(3){animation-delay:.4s}@keyframes dot-pulse{0%,80%,to{opacity:.3}40%{opacity:1}}.v4-shell .calendar-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:380px}.v4-shell .calendar-col{display:flex;flex-direction:column;gap:8px;align-items:center}.v4-shell .calendar-icon{width:52px;height:52px}.v4-shell .calendar-events{display:flex;flex-direction:column;gap:4px;width:100%}.v4-shell .calendar-event-row{height:10px;border-radius:3px;opacity:0}.v4-shell .doc-stack{position:relative;width:200px;height:260px;margin:0 auto}.v4-shell .doc-card{position:absolute;width:160px;height:220px;background:var(--paper);border-radius:4px;box-shadow:0 8px 24px rgba(0,0,0,.4);display:flex;align-items:flex-start;padding:16px 12px;gap:0;opacity:0}.v4-shell .doc-card .doc-lines{width:100%;display:flex;flex-direction:column;gap:6px}.v4-shell .doc-card .doc-line{height:6px;background:rgba(20,24,31,.12);border-radius:2px}.v4-shell .doc-card .doc-line.wide{width:90%}.v4-shell .doc-card .doc-line.medium{width:70%}.v4-shell .doc-card .doc-line.short{width:50%}.v4-shell .doc-scan{position:absolute;top:0;left:0;right:0;height:100%;pointer-events:none;z-index:10}.v4-shell .doc-chat-result{position:absolute;bottom:-40px;left:0;right:0;background:var(--primary);color:#fff;border-radius:6px;padding:8px 12px;font-size:12px;font-family:var(--font-mono);opacity:0;text-align:center;white-space:nowrap}.v4-shell .workflow-scene{display:flex;flex-direction:column;gap:16px;max-width:380px;width:100%}.v4-shell .cam-icon{width:56px;height:56px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto;opacity:0;position:relative}.v4-shell .cam-flash{position:absolute;inset:0;border-radius:50%;background:rgba(255,255,255,.8);opacity:0;pointer-events:none}.v4-shell .spinner-msg{text-align:center;color:var(--text-muted);font-size:13px;font-family:var(--font-mono);letter-spacing:.04em;opacity:0}.v4-shell .chiffrage-table{background:var(--bg);border:1px solid var(--line);border-radius:4px;overflow:hidden;font-size:13px}.v4-shell .ch-header{border-bottom:1px solid var(--line);color:var(--text-dim);font-size:11px;letter-spacing:.08em;text-transform:uppercase;font-family:var(--font-sans);font-weight:500}.v4-shell .ch-header,.v4-shell .ch-row{display:grid;grid-template-columns:2fr .7fr 1fr 1fr;padding:8px 12px}.v4-shell .ch-row{border-bottom:1px solid rgba(74,89,112,.2);color:var(--text-muted);opacity:0;font-variant-numeric:tabular-nums}.v4-shell .ch-row:last-child{border-bottom:0}.v4-shell .ch-row .label{color:var(--text)}.v4-shell .ch-row .num{text-align:right}.v4-shell .ch-total{display:flex;justify-content:space-between;padding:12px;border-top:1.5px solid var(--text);font-weight:600;opacity:0}.v4-shell .ch-total .euros{font-family:var(--font-serif);font-size:26px;color:var(--text);font-variant-numeric:tabular-nums}.v4-shell .ch-badge{background:var(--primary);color:#fff;font-size:12px;padding:6px 12px;border-radius:4px;text-align:center;opacity:0;margin-top:8px}.v4-shell .ren-scene{display:grid;grid-template-columns:1fr 32px 1fr;gap:0;max-width:420px;width:100%;font-size:12px}.v4-shell .ren-col{display:flex;flex-direction:column;gap:8px}.v4-shell .ren-header{font-family:var(--font-sans);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-dim);padding-bottom:8px;border-bottom:1px solid var(--line);margin-bottom:4px;font-weight:500}.v4-shell .ren-row-left{background:var(--bg);border:1px solid var(--line);border-radius:3px;color:var(--text-muted)}.v4-shell .ren-row-left,.v4-shell .ren-row-right{padding:6px 10px;opacity:0;font-family:var(--font-mono)}.v4-shell .ren-row-right{background:var(--primary);background:rgba(37,99,235,.15);border:1px solid var(--primary);border-radius:3px;color:var(--text);font-size:11px}.v4-shell .ren-svg-col{display:flex;flex-direction:column;gap:8px;padding-top:28px;align-items:center}.v4-shell .ren-connect{flex-shrink:0}.v4-shell .darva-scene{max-width:400px;width:100%}.v4-shell .darva-table{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:4px;overflow:hidden;font-size:12px;margin-bottom:12px}.v4-shell .darva-th{padding:8px 12px;background:var(--bg-soft);color:var(--text-dim);font-size:10px;letter-spacing:.1em;text-transform:uppercase;font-weight:500;border-bottom:1px solid var(--line)}.v4-shell .darva-th,.v4-shell .darva-tr{display:grid;grid-template-columns:.4fr 1.4fr .5fr .7fr .8fr}.v4-shell .darva-tr{padding:7px 12px;border-bottom:1px solid rgba(74,89,112,.15);color:var(--text-muted);opacity:0;font-variant-numeric:tabular-nums}.v4-shell .darva-tr:last-child{border-bottom:0}.v4-shell .darva-tr .num{text-align:right}.v4-shell .darva-excel{display:flex;align-items:center;gap:10px;color:var(--text-muted);font-size:13px;opacity:0;margin-top:8px}.v4-shell .bpu-scene{max-width:400px;width:100%}.v4-shell .bpu-header{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;background:var(--bg-soft);border-radius:4px 4px 0 0;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-dim);font-weight:500;border:1px solid var(--line);border-bottom:none}.v4-shell .bpu-row{display:grid;grid-template-columns:2fr .8fr 1fr;padding:10px 14px;border:1px solid var(--line);border-top:none;color:var(--text-muted);font-size:13px;font-variant-numeric:tabular-nums;opacity:0;transition:background .3s ease}.v4-shell .bpu-row.active{background:rgba(37,99,235,.1);border-left:3px solid var(--primary);color:var(--text)}.v4-shell .bpu-row .label{color:var(--text)}.v4-shell .bpu-row .unit{color:var(--text-dim);font-size:11px;align-self:center}.v4-shell .bpu-row .price{text-align:right;font-weight:600}.v4-shell .v4-progress-rail{position:fixed;top:50%;right:28px;transform:translateY(-50%);z-index:40;display:flex;flex-direction:column;gap:12px;pointer-events:auto}.v4-shell .v4-progress-rail:before{content:"";position:absolute;top:8px;bottom:8px;right:2px;width:1px;background:var(--line);z-index:-1}.v4-shell .v4-step{display:flex;align-items:center;gap:10px;flex-direction:row-reverse;cursor:pointer;border:0;background:none;padding:0;color:var(--text-dim);font-family:var(--font-sans);font-size:11px;letter-spacing:.06em;text-transform:uppercase;font-weight:500;text-align:right;transition:color .25s ease}.v4-shell .v4-step-dot{width:6px;height:6px;border-radius:50%;background:var(--text-dim);opacity:.4;flex-shrink:0;transition:all .3s cubic-bezier(.16,1,.3,1)}.v4-shell .v4-step-label{opacity:0;transform:translateX(6px);transition:opacity .25s ease,transform .25s ease;white-space:nowrap;pointer-events:none}.v4-shell .v4-step.is-active .v4-step-label,.v4-shell .v4-step:hover .v4-step-label{opacity:1;transform:translateX(0)}.v4-shell .v4-step.is-active{color:var(--text)}.v4-shell .v4-step.is-active .v4-step-dot{background:var(--primary);opacity:1;width:10px;height:10px;box-shadow:0 0 0 4px rgba(37,99,235,.15)}.v4-shell .v4-step.is-passed .v4-step-dot{background:var(--text-muted);opacity:.7}@media (max-width:1100px){.v4-shell .v4-progress-rail{display:none}}.v4-shell .v4-plumb{position:fixed;top:var(--header-h,48px);bottom:0;left:50%;width:1px;background:rgba(37,99,235,.12);transform:translateX(-50%);z-index:20;pointer-events:none}.v4-shell .v4-footer{padding:14px 32px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:center;gap:24px;font-family:var(--font-sans);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim)}.v4-shell .ren2-scene{display:flex;align-items:center;gap:12px;max-width:520px;width:100%}.v4-shell .ren2-block{flex:1;display:flex;flex-direction:column;gap:6px}.v4-shell .ren2-block-label{font-family:var(--font-sans);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--text-dim);font-weight:500;padding-bottom:8px;border-bottom:1px solid var(--line);margin-bottom:2px}.v4-shell .ren2-row{background:var(--bg);border:1px solid var(--line);border-radius:3px;padding:7px 12px;color:var(--text-muted);font-family:var(--font-mono);font-size:12px;opacity:0;transition:opacity .3s ease}.v4-shell .ren2-row.is-shown{opacity:1}.v4-shell .ren2-row-right{background:rgba(37,99,235,.1);border-color:rgba(37,99,235,.3);color:var(--text)}.v4-shell .ren2-arrow-zone{display:flex;flex-direction:column;align-items:center;gap:6px;flex-shrink:0;width:88px}.v4-shell .ren2-arrow-svg{width:80px;height:40px}.v4-shell .ren2-path{stroke-dasharray:70;stroke-dashoffset:70}.v4-shell .ren2-convert-label{font-family:var(--font-sans);font-size:10px;letter-spacing:.06em;color:var(--primary);text-align:center;text-transform:uppercase;opacity:0;transition:opacity .3s ease}.v4-shell .ren2-convert-label.is-shown{opacity:1}@media (max-width:768px){.v4-shell section.v4-section{grid-template-columns:1fr}.v4-shell section.v4-section .left-pane{padding:48px 20px 24px}.v4-shell section.v4-section .right-pane{padding:32px 20px 48px;min-height:50vh}.v4-shell .v4-plumb{display:none}.v4-shell .macbook{width:200px}}.v4-shell .feat-board{display:flex;flex-direction:column;gap:12px;max-width:380px;width:100%}.v4-shell .feat-card{display:flex;align-items:center;gap:14px;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:14px 18px;font-family:var(--font-sans);font-size:15px;color:var(--text-muted);opacity:0;transform:translateX(-16px);transition:opacity .4s ease,transform .4s ease}.v4-shell .feat-card.is-shown{opacity:1;transform:translateX(0)}.v4-shell .feat-check{color:var(--primary);font-size:18px;font-weight:700;flex-shrink:0}.v4-shell .feat-text{color:var(--text)}.v4-shell .cal-flow-svg{width:100%;max-width:440px;height:auto}.v4-shell .ios-chat{display:flex;flex-direction:column;gap:14px;max-width:380px;width:100%;background:var(--bg-soft);border:1px solid var(--line);border-radius:16px;padding:20px;font-size:15px}.v4-shell .ios-msg{display:flex;flex-direction:column;gap:3px}.v4-shell .ios-msg.user{align-items:flex-end}.v4-shell .ios-msg.ai{align-items:flex-start}.v4-shell .ios-sender{font-size:11px;letter-spacing:.04em;color:var(--text-dim);margin-bottom:3px}.v4-shell .ios-bubble{max-width:85%;padding:10px 14px;border-radius:18px;line-height:1.4;font-family:var(--font-sans);font-size:14px}.v4-shell .ios-bubble.user{background:var(--primary);color:#fff;border-radius:18px 18px 4px 18px}.v4-shell .ios-bubble.ai{background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:18px 18px 18px 4px}.v4-shell .ios-hidden{opacity:0;transform:translateY(12px);transition:opacity .4s ease,transform .4s ease}.v4-shell .ios-visible{opacity:1;transform:translateY(0)}.v4-shell .room-sketch{width:100%;max-width:280px;height:auto;margin:0 auto;display:block}.v4-shell .bpu-msg{font-family:var(--font-serif);font-style:italic;font-size:15px;color:var(--text-muted);text-align:center;max-width:340px;margin:4px 0;line-height:1.4}.v4-shell .cal-flow-scene{display:flex;align-items:center;gap:0;width:100%;max-width:480px}.v4-shell .cal-icons-col{display:flex;flex-direction:column;gap:24px;flex-shrink:0}.v4-shell .cal-icon-item{opacity:0;transform:translateX(-12px);transition:opacity .4s ease,transform .4s ease}.v4-shell .cal-icon-item.is-shown{opacity:1;transform:translateX(0)}.v4-shell .cal-arrows-svg{width:120px;height:200px;flex-shrink:0}.v4-shell .cal-aplomb-node{flex-shrink:0}.v4-shell .cal-aplomb-node,.v4-shell .cal-center{display:flex;align-items:center;justify-content:center}.v4-shell .cal-center{width:72px;height:72px;border-radius:50%;background:var(--primary);flex-direction:column;color:#fff;text-align:center;opacity:0;transform:scale(.7);transition:opacity .4s ease,transform .4s cubic-bezier(.34,1.56,.64,1)}.v4-shell .cal-center.is-shown{opacity:1;transform:scale(1)}.v4-shell .cal-out-arrow{display:flex;align-items:center;gap:10px;opacity:0;transform:translateX(-8px);transition:opacity .4s ease,transform .4s ease;flex-shrink:0}.v4-shell .cal-out-arrow.is-shown{opacity:1;transform:translateX(0)}.v4-shell .cal-dossiers-label{display:flex;flex-direction:column;gap:2px}.v4-shell .inject-svg{width:100%;max-width:420px;height:auto}.v4-shell .skip-link{position:absolute;top:-100px;left:16px;background:var(--primary);color:#fff;padding:6px 12px;z-index:1000;text-decoration:none}.v4-shell .skip-link:focus{top:8px}