:root{color-scheme:light dark;--bg:#0f1419;--panel:#151d25;--card:#f8fafc;--ink:#102030;--muted:#64748b;--line:#d8e0e8;--accent:#2563eb;--user:#ecfeff;--assistant:#f0fdf4;--danger:#b91c1c;--ok:#047857;--shadow:0 24px 70px rgba(0,0,0,.28)}*{box-sizing:border-box}[hidden]{display:none!important}html,body{height:100%;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:radial-gradient(circle at top,#26364a 0,#0f1419 45%,#090d12 100%);color:#edf2f7}button,input,select{font:inherit}button{border:0;border-radius:999px;padding:.72rem 1rem;background:#e2e8f0;color:#0f172a;cursor:pointer;font-weight:700}button:hover{filter:brightness(1.04)}button:disabled{opacity:.45;cursor:not-allowed}.ghost{background:transparent;color:#dbeafe;border:1px solid rgba(219,234,254,.35)}.primary{background:var(--accent);color:white}.danger{background:#fee2e2;color:#991b1b}.app{height:100dvh;display:grid;grid-template-rows:auto 1fr;overflow:hidden}.topbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:calc(.7rem + env(safe-area-inset-top)) clamp(.8rem,3vw,1.4rem) .7rem;border-bottom:1px solid rgba(255,255,255,.12);background:rgba(8,13,19,.74);backdrop-filter:blur(16px)}.brand{display:flex;flex-direction:column;gap:.1rem}.brand strong{font-size:1rem}.brand span{font-size:.78rem;color:#aac0d8}.top-actions{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap}.view{min-height:0;padding:clamp(.75rem,3vw,1.5rem);overflow:hidden}.import-view{display:grid;place-items:center}.drop{width:min(760px,100%);border:2px dashed rgba(226,232,240,.4);border-radius:28px;padding:clamp(1.2rem,5vw,2.5rem);background:rgba(15,23,42,.68);box-shadow:var(--shadow);text-align:center}.drop.drag{border-color:#93c5fd;background:rgba(30,64,175,.35)}.drop h1{margin:.2rem 0 .5rem;font-size:clamp(1.8rem,7vw,3.2rem);letter-spacing:-.04em}.eyebrow{margin:0 0 .35rem;color:#93c5fd;font-size:.78rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.home-card{border-style:solid}.drop p{margin:.4rem auto 1rem;color:#cbd5e1;max-width:52ch}.fileline{display:flex;justify-content:center;gap:.7rem;flex-wrap:wrap;margin-top:1rem}.status{margin-top:1rem;min-height:1.4rem;color:#bfdbfe}.status.error{color:#fecaca}.status.ok{color:#bbf7d0}.viewer-view{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr) auto;gap:.8rem}.stage{min-height:0;display:grid;place-items:center}.card{width:min(880px,100%);height:100%;max-height:calc(100dvh - 150px);background:var(--card);color:var(--ink);border-radius:28px;box-shadow:var(--shadow);display:grid;grid-template-rows:auto minmax(0,1fr) auto;overflow:hidden;border:1px solid rgba(255,255,255,.25)}.card.user{background:linear-gradient(180deg,var(--user),#fff)}.card.assistant{background:linear-gradient(180deg,var(--assistant),#fff)}.card.other{background:linear-gradient(180deg,#f8fafc,#fff)}.card-head{padding:1rem 1.1rem;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:.8rem}.speaker{display:flex;flex-direction:column;gap:.1rem}.speaker b{font-size:1.05rem}.speaker span,.meta{font-size:.8rem;color:var(--muted)}.card-body{min-height:0;overflow:auto;padding:1rem 1.1rem;font-size:1rem;line-height:1.55}.card-body p{margin:.2rem 0 1rem}.card-body img{display:block;max-width:100%;height:auto;border-radius:18px;border:1px solid var(--line);margin:.3rem 0 1rem;cursor:zoom-in}.card-body blockquote{border-left:4px solid var(--line);margin:1rem 0;padding:.2rem 0 .2rem 1rem;color:#334155}.card-body code{background:#e2e8f0;border-radius:.35rem;padding:.12rem .3rem}.codebox{position:relative;margin:1rem 0}.codebox pre{margin:0;overflow:auto;background:#0f172a;color:#e2e8f0;border-radius:16px;padding:1rem;font-size:.88rem;line-height:1.45}.codebox pre code{display:block;background:transparent!important;color:inherit!important;padding:0!important;border-radius:0!important;white-space:pre;font:inherit}.codebox pre code *{background:transparent!important;color:inherit!important}.codebox pre{color-scheme:dark}.copy{position:absolute;top:.45rem;right:.45rem;padding:.38rem .62rem;font-size:.75rem;background:#e2e8f0;color:#0f172a}.attachments{border-top:1px solid var(--line);padding:.75rem 1rem;display:flex;gap:.5rem;align-items:center;flex-wrap:wrap}.chip{display:inline-flex;align-items:center;gap:.35rem;border:1px solid var(--line);border-radius:999px;padding:.45rem .7rem;background:white;color:#0f172a;text-decoration:none;font-size:.88rem}.nav{display:flex;align-items:center;justify-content:center;gap:.55rem;flex-wrap:wrap}.counter{min-width:5.5rem;text-align:center;color:#e5e7eb;font-weight:700}.timeline{position:fixed;inset:0 0 0 auto;width:min(360px,92vw);background:#0f172a;color:#e2e8f0;box-shadow:var(--shadow);transform:translateX(105%);transition:transform .2s ease;z-index:5;display:grid;grid-template-rows:auto 1fr}.timeline.open{transform:translateX(0)}.timeline-head{display:flex;align-items:center;justify-content:space-between;padding:1rem;border-bottom:1px solid rgba(255,255,255,.12)}.timeline-list{overflow:auto;padding:.7rem}.timeline-item{display:block;width:100%;border-radius:16px;padding:.8rem;margin-bottom:.45rem;background:#1e293b;color:#e2e8f0;text-align:left}.timeline-item.active{outline:2px solid #93c5fd}.timeline-item small{display:block;color:#94a3b8;margin-top:.2rem}.warnings{font-size:.86rem;color:#854d0e;background:#fef3c7;border-radius:16px;padding:.7rem;margin-top:.8rem;text-align:left}.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.84);z-index:10;display:none;align-items:center;justify-content:center;padding:1rem}.lightbox.open{display:flex}.lightbox img{max-width:96vw;max-height:88dvh;border-radius:18px;background:white}.lightbox button{position:absolute;top:1rem;right:1rem}@media(max-width:640px){.topbar{align-items:flex-start}.top-actions button{padding:.55rem .75rem}.card{border-radius:22px;max-height:calc(100dvh - 142px)}.card-head{padding:.85rem}.card-body{padding:.85rem}.nav button{padding:.62rem .78rem}.hide-sm{display:none}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* V5 splash workflow */
.import-view{display:block;overflow:auto;padding:clamp(1rem,3vw,2rem)}
.home-shell{width:min(1180px,100%);min-height:100%;margin:0 auto;display:grid;grid-template-columns:1fr;gap:1.05rem;align-content:center}.home-main{min-width:0}.home-main h1{margin:.1rem 0 1rem;font-size:clamp(2.35rem,7vw,5rem);letter-spacing:-.065em;line-height:.92}.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}.steps.drag .step-panel{border-color:#93c5fd;background:linear-gradient(180deg,rgba(30,64,175,.42),rgba(15,23,42,.82))}.step-panel{min-height:260px;border:1px solid rgba(219,234,254,.22);border-radius:30px;background:linear-gradient(180deg,rgba(20,31,45,.86),rgba(9,14,21,.76));box-shadow:0 24px 70px rgba(0,0,0,.26);padding:1.2rem;display:grid;grid-template-rows:auto 1fr auto;gap:1.1rem}.step-panel:hover{border-color:rgba(147,197,253,.42)}.step-num{width:2.45rem;height:2.45rem;border-radius:999px;background:linear-gradient(135deg,#1d4ed8,#4f46e5);color:white;display:grid;place-items:center;font-weight:950;box-shadow:0 10px 26px rgba(37,99,235,.28)}.step-panel h2{margin:0 0 .65rem;font-size:clamp(1.32rem,2.25vw,1.9rem);letter-spacing:-.04em;line-height:1.03}.step-panel p{margin:0;color:#cbd5e1;line-height:1.45;font-size:1rem}.step-panel code{background:rgba(226,232,240,.12);border:1px solid rgba(226,232,240,.14);border-radius:.48rem;padding:.14rem .4rem;color:#f8fafc}.button{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:.8rem 1.08rem;text-decoration:none;font-weight:850}.upload-panel{border-color:rgba(147,197,253,.46);background:linear-gradient(180deg,rgba(30,64,175,.3),rgba(9,14,21,.76))}.preset-panel{width:100%;border:1px solid rgba(219,234,254,.18);border-radius:26px;background:rgba(15,23,42,.58);padding:.85rem;box-shadow:0 18px 55px rgba(0,0,0,.18);display:grid;grid-template-columns:minmax(210px,1fr) minmax(180px,.8fr) minmax(180px,.8fr) minmax(220px,1fr);gap:.7rem;align-items:stretch}.preset-title{padding:.25rem .45rem}.preset-title h2{margin:0 0 .25rem;font-size:1rem;color:#dbeafe}.preset-title p{margin:0;color:#9fb3ca;font-size:.86rem;line-height:1.35}.preset{width:100%;display:block;text-align:left;border-radius:18px;background:rgba(30,41,59,.78);border:1px solid rgba(219,234,254,.16);color:#e2e8f0;margin:0;padding:.9rem}.preset span{display:block;font-weight:850}.preset small{display:block;color:#9fb3ca;margin-top:.18rem}.preset:hover{border-color:rgba(147,197,253,.35);filter:none;background:rgba(39,54,75,.82)}.privacy{margin:0;border-left:1px solid rgba(219,234,254,.14);padding:.25rem .45rem .25rem .9rem;color:#9fb3ca;font-size:.83rem;line-height:1.4;display:flex;align-items:center}.status{min-height:1.4rem;text-align:left}.brand span{max-width:40ch}.viewer-view{padding:clamp(1rem,3vw,1.8rem);background:radial-gradient(circle at top,rgba(38,54,74,.45),rgba(9,13,18,0) 48%)}.stage{align-items:center}.card{border-radius:30px;border:1px solid rgba(219,234,254,.28);box-shadow:0 24px 70px rgba(0,0,0,.32)}.card-head{background:rgba(248,250,252,.68);backdrop-filter:blur(8px)}.nav{padding:.15rem .2rem}.nav button{box-shadow:0 10px 28px rgba(0,0,0,.18)}@media(max-width:920px){.home-shell{align-content:start}.steps{grid-template-columns:1fr}.step-panel{min-height:0}.preset-panel{grid-template-columns:1fr 1fr}.preset-title,.privacy{grid-column:1/-1}.privacy{border-left:0;border-top:1px solid rgba(219,234,254,.14);padding:.75rem .45rem .2rem}}@media(max-width:640px){.home-main h1{font-size:3.1rem}.preset-panel{grid-template-columns:1fr}.step-panel h2{font-size:1.45rem}.step-panel{border-radius:24px}.preset-panel{border-radius:22px}}