/* ============================================================
   Dr. Ossian — Alvion Connect research assistant
   Everything is namespaced .oss-* so it cannot touch the rest
   of the site. Colours extend the theme tokens in style.css.
   ============================================================ */

.oss-page{
  --a-night:#070B10;
  --a-deep:#0C141F;
  --a-navy:#122639;
  --a-navy2:#17324C;
  --a-blue:#27547D;
  --a-teal:#6CA4AF;
  --a-glow:#7FE3F0;
  --a-mist:#E9EEF7;
  --a-grey:#8FA0B3;
  --a-amber:#F2D27A;
  --a-line:rgba(233,238,247,.09);
  --a-line2:rgba(233,238,247,.17);
  --a-glass:rgba(23,50,76,.42);
  --a-shadow:0 18px 50px -20px rgba(0,0,0,.85);

  position:relative;
  background:var(--a-night);
  color:var(--a-mist);
  font-size:15px;
  line-height:1.6;
  overflow:hidden;
}
.oss-page *,.oss-page *::before,.oss-page *::after{box-sizing:border-box}
.oss-page a{color:var(--a-teal)}
.oss-page h1,.oss-page h2,.oss-page h3,.oss-page h4{color:var(--a-mist)}
.oss-page ::selection{background:rgba(127,227,240,.3)}
.oss-page button{font-family:inherit;font-size:inherit;color:inherit}

/* ambient background */
.oss-page::before{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:0;opacity:.16;
  background-image:linear-gradient(rgba(233,238,247,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(233,238,247,.05) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 20%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 0%,#000 20%,transparent 78%);
}
.oss-aurora{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.oss-aurora b{position:absolute;display:block;border-radius:50%;filter:blur(90px);opacity:.4}
.oss-aurora b:nth-child(1){width:620px;height:620px;left:-180px;top:-220px;background:#1D5F73;animation:ossDrift1 26s ease-in-out infinite}
.oss-aurora b:nth-child(2){width:500px;height:500px;right:-140px;top:8%;background:#27547D;animation:ossDrift2 32s ease-in-out infinite}
.oss-aurora b:nth-child(3){width:540px;height:540px;left:38%;bottom:-280px;background:#123A50;animation:ossDrift3 38s ease-in-out infinite}
@keyframes ossDrift1{0%,100%{transform:translate(0,0)}50%{transform:translate(90px,70px)}}
@keyframes ossDrift2{0%,100%{transform:translate(0,0)}50%{transform:translate(-80px,60px)}}
@keyframes ossDrift3{0%,100%{transform:translate(0,0)}50%{transform:translate(60px,-70px)}}

/* ---------- shell ---------- */
.oss-shell{
  position:relative;z-index:1;
  display:grid;grid-template-columns:264px 1fr;
  height:calc(100vh - 92px);min-height:600px;
}

/* ---------- sidebar ---------- */
.oss-side{
  display:flex;flex-direction:column;min-height:0;
  background:linear-gradient(180deg,rgba(12,20,31,.9),rgba(7,11,16,.9));
  backdrop-filter:blur(18px);border-right:1px solid var(--a-line);
}
.oss-brand{display:flex;align-items:center;gap:11px;padding:20px 20px 16px}
.oss-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--a-teal),var(--a-blue));
  box-shadow:0 0 22px rgba(108,164,175,.45);font-weight:800;color:#06202A;font-size:17px;
}
.oss-mark span{color:#0A3A47}
.oss-brand-n{display:block;font-weight:700;font-size:15px;line-height:1.2}
.oss-brand-s{display:block;color:var(--a-grey);font-size:11px;letter-spacing:.09em;text-transform:uppercase}

.oss-new{
  margin:0 14px 16px;padding:11px 14px;border-radius:12px;cursor:pointer;text-align:left;
  border:1px solid rgba(127,227,240,.32);
  background:linear-gradient(120deg,rgba(108,164,175,.18),rgba(39,84,125,.14));
  display:flex;align-items:center;gap:9px;font-weight:600;transition:.18s;
}
.oss-new:hover{border-color:var(--a-glow);box-shadow:0 0 22px -6px rgba(127,227,240,.55)}

.oss-railhead{
  color:var(--a-grey);font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;
  padding:0 20px 8px;display:flex;justify-content:space-between;align-items:center;
}
.oss-railhead button{background:none;border:0;color:var(--a-grey);cursor:pointer;font-size:11px}
.oss-railhead button:hover{color:var(--a-teal)}
.oss-history{flex:1;overflow-y:auto;padding:0 12px 12px;min-height:0}
.oss-hitem{
  width:100%;text-align:left;background:transparent;border:1px solid transparent;border-radius:11px;
  padding:9px 12px;cursor:pointer;margin-bottom:3px;transition:.14s;display:block;
}
.oss-hitem:hover{background:rgba(23,50,76,.55)}
.oss-hitem.on{background:var(--a-glass);border-color:rgba(127,227,240,.3)}
.oss-hitem .t{display:block;font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.oss-hitem .m{display:flex;gap:7px;align-items:center;color:var(--a-grey);font-size:11.5px;margin-top:1px}
.oss-hitem .k{color:var(--a-teal)}
.oss-hempty{color:var(--a-grey);font-size:12.5px;padding:6px 12px;line-height:1.55}
.oss-railfoot{border-top:1px solid var(--a-line);padding:12px 16px;display:flex;align-items:center;gap:9px}
.oss-icon{
  width:32px;height:32px;border-radius:9px;border:1px solid var(--a-line2);background:transparent;
  display:grid;place-items:center;cursor:pointer;transition:.15s;flex:0 0 auto;
}
.oss-icon:hover{border-color:var(--a-glow);color:var(--a-glow);box-shadow:0 0 18px -6px rgba(127,227,240,.7)}
.oss-u{font-size:12px;color:var(--a-grey);line-height:1.35;min-width:0}
.oss-u b{display:block;color:var(--a-mist);font-size:12.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---------- main ---------- */
.oss-main{display:flex;flex-direction:column;min-height:0;min-width:0}
.oss-topbar{
  display:flex;align-items:center;gap:12px;padding:13px 28px;
  border-bottom:1px solid var(--a-line);background:rgba(7,11,16,.5);backdrop-filter:blur(14px);
}
.oss-crumb{display:flex;align-items:center;gap:9px;color:var(--a-grey);font-size:13px;flex:1;min-width:0}
.oss-crumb b{color:var(--a-mist);font-weight:600}
.oss-link{background:none;border:0;color:var(--a-teal);cursor:pointer;padding:0;font-size:13px}
.oss-link:hover{text-decoration:underline}
.oss-pill{
  border:1px solid rgba(242,210,122,.4);background:rgba(242,210,122,.1);color:var(--a-amber);
  font-size:11.5px;padding:4px 11px;border-radius:999px;cursor:pointer;white-space:nowrap;
}
.oss-scroll{flex:1;overflow-y:auto;min-height:0;scroll-behavior:smooth}
.oss-pad{max-width:940px;margin:0 auto;padding:34px 28px 90px}
.oss-fade{animation:ossFade .4s cubic-bezier(.2,.7,.3,1) both}
@keyframes ossFade{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* ---------- home ---------- */
.oss-eyebrow{
  display:inline-flex;align-items:center;gap:8px;border:1px solid var(--a-line2);border-radius:999px;
  padding:5px 13px;font-size:12px;color:var(--a-grey);margin-bottom:18px;background:rgba(23,50,76,.3);
}
.oss-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--a-glow);box-shadow:0 0 10px var(--a-glow);animation:ossBlip 2.4s infinite}
@keyframes ossBlip{0%,100%{opacity:1}50%{opacity:.35}}
.oss-h1{
  font-size:clamp(1.9rem,4vw,2.5rem);line-height:1.15;margin:0 0 14px;font-weight:800;letter-spacing:-.02em;
  background:linear-gradient(100deg,#FFFFFF 8%,var(--a-glow) 58%,var(--a-teal) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.oss-lede{color:var(--a-grey);max-width:60ch;margin:0 0 28px;font-size:15.5px}

.oss-askwrap{position:relative;margin-bottom:14px;max-width:720px}
.oss-askwrap::before{
  content:"";position:absolute;inset:-1.5px;border-radius:17px;
  background:linear-gradient(110deg,var(--a-teal),rgba(39,84,125,.4),var(--a-glow));opacity:.5;transition:.25s;
}
.oss-askwrap:focus-within::before{opacity:1;box-shadow:0 0 34px -8px rgba(127,227,240,.65)}
.oss-ask{position:relative;display:flex;gap:10px;align-items:center;background:rgba(12,20,31,.94);border-radius:16px;padding:8px 8px 8px 18px}
.oss-ask input{flex:1;background:none;border:0;outline:none;padding:12px 0;font-size:15.5px;min-width:0;color:var(--a-mist)}
.oss-ask input::placeholder{color:var(--a-grey)}
.oss-send{
  border:0;border-radius:11px;padding:11px 20px;font-weight:700;cursor:pointer;flex:0 0 auto;
  background:linear-gradient(120deg,var(--a-glow),var(--a-teal));color:#06202A;transition:.18s;
}
.oss-send:hover{box-shadow:0 0 26px -6px rgba(127,227,240,.85);transform:translateY(-1px)}
.oss-suggest{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:36px}
.oss-chip{background:rgba(23,50,76,.4);border:1px solid var(--a-line2);border-radius:999px;padding:7px 14px;font-size:13px;cursor:pointer;transition:.16s;color:var(--a-mist)}
.oss-chip:hover{border-color:var(--a-glow);color:var(--a-glow);transform:translateY(-1px)}

.oss-sect{color:var(--a-grey);font-size:11px;letter-spacing:.14em;text-transform:uppercase;margin:0 0 14px}
.oss-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(228px,1fr));gap:15px}
.oss-card{
  position:relative;overflow:hidden;text-align:left;cursor:pointer;color:var(--a-mist);
  background:var(--a-glass);border:1px solid var(--a-line);border-radius:16px;padding:22px 20px 20px;
  backdrop-filter:blur(12px);transition:.22s cubic-bezier(.2,.7,.3,1);
}
.oss-card:hover{transform:translateY(-4px);box-shadow:var(--a-shadow);border-color:rgba(127,227,240,.45)}
.oss-card .ic{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;margin-bottom:14px;
  background:linear-gradient(140deg,rgba(127,227,240,.22),rgba(39,84,125,.3));color:var(--a-glow);
}
.oss-card h3{margin:0 0 6px;font-size:16.5px;font-weight:700}
.oss-card p{margin:0;color:var(--a-grey);font-size:13.5px}
.oss-card .go{color:var(--a-glow);font-size:13px;margin-top:14px;display:inline-block;transition:.2s}
.oss-card:hover .go{transform:translateX(4px)}


/* ---------- welcome strip ---------- */
.oss-welcome{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:0 0 30px;
}
.oss-point{
  background:var(--a-glass);border:1px solid var(--a-line);border-radius:14px;padding:16px 18px;
  backdrop-filter:blur(10px);font-size:13.5px;color:var(--a-grey);line-height:1.55;
  animation:ossFade .4s both;
}
.oss-point:nth-child(2){animation-delay:80ms}
.oss-point:nth-child(3){animation-delay:160ms}
.oss-point b{
  display:block;margin-bottom:6px;color:var(--a-glow);font-size:11px;
  letter-spacing:.12em;text-transform:uppercase;font-weight:700;
}

/* ---------- wizard ---------- */
.oss-stage{display:grid;grid-template-columns:1fr 246px;gap:30px;align-items:start}
.oss-steps{display:flex;gap:6px;margin-bottom:24px}
.oss-steps span{flex:1;height:4px;border-radius:99px;background:rgba(233,238,247,.12);overflow:hidden;position:relative}
.oss-steps span.done::after{
  content:"";position:absolute;inset:0;border-radius:99px;
  background:linear-gradient(90deg,var(--a-teal),var(--a-glow));box-shadow:0 0 12px rgba(127,227,240,.6);
  animation:ossGrow .45s cubic-bezier(.2,.8,.3,1) both;
}
@keyframes ossGrow{from{transform:scaleX(0);transform-origin:left}to{transform:scaleX(1)}}
.oss-qnum{color:var(--a-grey);font-size:12.5px;letter-spacing:.06em}
.oss-q{font-size:clamp(1.3rem,2.6vw,1.7rem);margin:8px 0;font-weight:700;letter-spacing:-.015em;line-height:1.25}
.oss-why{color:var(--a-grey);font-size:14px;margin:0 0 24px;max-width:60ch}
.oss-opts{display:grid;gap:11px;max-width:640px}
.oss-opt{
  display:flex;gap:14px;align-items:flex-start;text-align:left;cursor:pointer;color:var(--a-mist);width:100%;
  background:var(--a-glass);border:1px solid var(--a-line);border-radius:14px;padding:15px 17px;
  backdrop-filter:blur(10px);transition:.16s;
}
.oss-opt:hover{border-color:rgba(127,227,240,.55);transform:translateX(3px)}
.oss-opt.on{border-color:var(--a-glow);background:rgba(23,50,76,.75);box-shadow:0 0 26px -12px rgba(127,227,240,.8)}
.oss-tick{width:21px;height:21px;border-radius:50%;border:1.5px solid var(--a-line2);flex:0 0 auto;margin-top:2px;position:relative;transition:.16s}
.oss-opt.on .oss-tick{border-color:var(--a-glow);background:linear-gradient(140deg,var(--a-glow),var(--a-teal))}
.oss-opt.on .oss-tick::after{content:"";position:absolute;left:7px;top:3.5px;width:5px;height:9.5px;border:solid #06202A;border-width:0 2px 2px 0;transform:rotate(45deg)}
.oss-opt .l{font-weight:600}
.oss-opt .d{color:var(--a-grey);font-size:13px}
.oss-page textarea{
  width:100%;max-width:640px;background:rgba(12,20,31,.85);border:1px solid var(--a-line2);color:var(--a-mist);
  padding:14px 16px;border-radius:14px;font-family:inherit;font-size:14.5px;min-height:100px;resize:vertical;outline:none;transition:.16s;
}
.oss-page textarea:focus{border-color:var(--a-glow);box-shadow:0 0 24px -10px rgba(127,227,240,.8)}
.oss-nav{display:flex;gap:11px;margin-top:26px;align-items:center;flex-wrap:wrap}
.oss-primary{
  border:0;border-radius:12px;padding:13px 26px;font-weight:700;cursor:pointer;
  background:linear-gradient(120deg,var(--a-glow),var(--a-teal));color:#06202A;transition:.18s;
}
.oss-primary:hover{box-shadow:0 0 28px -6px rgba(127,227,240,.85);transform:translateY(-1px)}
.oss-ghost{background:rgba(23,50,76,.4);border:1px solid var(--a-line2);color:var(--a-mist);border-radius:12px;padding:11px 18px;cursor:pointer;font-size:14px;transition:.16s;display:inline-block}
.oss-ghost:hover{border-color:var(--a-glow);color:var(--a-glow);text-decoration:none}
.oss-note{color:var(--a-grey);font-size:13px}
.oss-rail{background:var(--a-glass);border:1px solid var(--a-line);border-radius:16px;padding:18px;backdrop-filter:blur(12px);position:sticky;top:0}
.oss-rail h4{margin:0 0 12px;font-size:10.5px;color:var(--a-grey);letter-spacing:.13em;text-transform:uppercase}
.oss-rail dl{margin:0}
.oss-rail dt{color:var(--a-grey);font-size:11.5px;margin-top:12px}
.oss-rail dd{margin:2px 0 0;font-size:13.5px}
.oss-rail .empty{color:var(--a-grey);font-size:12.5px}

/* ---------- document ---------- */
.oss-toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:18px}
.oss-toolbar .sp{flex:1}
.oss-doc{
  background:linear-gradient(165deg,rgba(23,50,76,.55),rgba(12,20,31,.75));border:1px solid var(--a-line);
  border-radius:18px;padding:34px 36px;backdrop-filter:blur(14px);box-shadow:var(--a-shadow);
}
.oss-doc h1{font-size:22px;margin:0 0 4px;letter-spacing:-.015em}
.oss-doc .meta{color:var(--a-grey);font-size:13px;margin-bottom:22px}
.oss-doc h2{font-size:16px;margin:28px 0 10px;padding-bottom:8px;border-bottom:1px solid var(--a-line2);display:flex;align-items:center;gap:9px}
.oss-doc h2::before{content:"";width:3px;height:15px;border-radius:2px;background:linear-gradient(var(--a-glow),var(--a-teal))}
.oss-doc h3{font-size:14.5px;margin:18px 0 6px}
.oss-doc p,.oss-doc li{max-width:74ch}
.oss-doc ul,.oss-doc ol{padding-left:22px}
.oss-doc table{border-collapse:collapse;width:100%;margin:12px 0 18px;font-size:13.5px}
.oss-doc th,.oss-doc td{border:1px solid var(--a-line2);padding:8px 11px;text-align:left;vertical-align:top}
.oss-doc th{color:var(--a-grey);font-weight:600;background:rgba(7,11,16,.5)}
.oss-doc tr:hover td{background:rgba(127,227,240,.04)}
.oss-doc code{background:rgba(7,11,16,.6);padding:1px 6px;border-radius:4px;font-size:12.5px}
.oss-flag{background:rgba(242,210,122,.16);color:var(--a-amber);padding:1px 7px;border-radius:5px;font-size:13px}
.oss-callout{
  background:linear-gradient(120deg,rgba(108,164,175,.13),rgba(39,84,125,.09));
  border:1px solid rgba(127,227,240,.28);border-radius:16px;padding:16px 20px;margin:20px 0;
}
.oss-callout b{display:block;margin-bottom:5px;color:var(--a-glow)}
.oss-err{background:rgba(255,120,120,.1);border:1px solid rgba(255,120,120,.35);border-radius:14px;padding:14px 18px;color:#F3B3B3;margin:14px 0}

/* ---------- markers ---------- */
.oss-mgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(256px,1fr));gap:15px}
.oss-mcard{background:var(--a-glass);border:1px solid var(--a-line);border-radius:16px;padding:18px 20px;backdrop-filter:blur(10px);transition:.2s;animation:ossFade .4s both}
.oss-mcard:hover{transform:translateY(-3px);border-color:rgba(127,227,240,.45);box-shadow:var(--a-shadow)}
.oss-mcard .cd{font-size:20px;font-weight:700;letter-spacing:-.01em}
.oss-mcard .cd small{color:var(--a-grey);font-weight:400;font-size:12.5px;display:block;margin-top:2px}
.oss-pill2{display:inline-block;margin:9px 0;padding:3px 11px;border-radius:999px;font-size:11.5px;border:1px solid var(--a-line2)}
.oss-pill2.high{border-color:var(--a-glow);color:var(--a-glow);background:rgba(127,227,240,.1)}
.oss-pill2.absent{border-color:rgba(255,140,140,.5);color:#F3B3B3;background:rgba(255,140,140,.08)}
.oss-pill2.variable{border-color:var(--a-amber);color:var(--a-amber);background:rgba(242,210,122,.09)}
.oss-pill2.low,.oss-pill2.moderate{border-color:var(--a-grey);color:var(--a-grey)}
.oss-mcard p{margin:0 0 7px;font-size:13.5px}
.oss-mcard .k{color:var(--a-grey);font-size:12.5px}

/* ---------- references ---------- */
.oss-ref{background:var(--a-glass);border:1px solid var(--a-line);border-radius:16px;padding:17px 20px;margin-bottom:12px;backdrop-filter:blur(10px);transition:.18s;animation:ossFade .4s both}
.oss-ref:hover{border-color:rgba(127,227,240,.4);transform:translateX(3px)}
.oss-ref .t{font-weight:600}
.oss-ref .m{color:var(--a-grey);font-size:13px;margin:3px 0 8px}
.oss-tag{display:inline-block;border:1px solid var(--a-line2);border-radius:999px;padding:1px 10px;font-size:11px;color:var(--a-glow);margin-left:8px;background:rgba(127,227,240,.08)}

/* ---------- chat ---------- */
.oss-msgs{display:flex;flex-direction:column;gap:16px;margin-bottom:24px}
.oss-msg{max-width:80%;padding:14px 18px;border-radius:18px;animation:ossFade .35s both}
.oss-msg.u{align-self:flex-end;background:linear-gradient(120deg,var(--a-blue),#1D4666);border-bottom-right-radius:6px}
.oss-msg.a{align-self:flex-start;background:var(--a-glass);border:1px solid var(--a-line);backdrop-filter:blur(10px);border-bottom-left-radius:6px}
.oss-msg.a .who{color:var(--a-glow);font-size:11px;font-weight:700;letter-spacing:.12em;margin-bottom:7px}
.oss-msg p:first-child{margin-top:0}
.oss-msg p:last-child{margin-bottom:0}
.oss-typing{display:inline-flex;gap:5px;align-items:center;height:20px}
.oss-typing i{width:7px;height:7px;border-radius:50%;background:var(--a-glow);animation:ossBounce 1.1s infinite;box-shadow:0 0 8px var(--a-glow)}
.oss-typing i:nth-child(2){animation-delay:.16s}
.oss-typing i:nth-child(3){animation-delay:.32s}
@keyframes ossBounce{0%,100%{opacity:.25;transform:translateY(0)}50%{opacity:1;transform:translateY(-3px)}}

/* ---------- modal ---------- */
.oss-veil{position:fixed;inset:0;z-index:9999;background:rgba(4,7,11,.72);backdrop-filter:blur(6px);display:grid;place-items:center;padding:24px;animation:ossFade .22s both}
.oss-modal{
  width:min(660px,100%);max-height:82vh;overflow-y:auto;border-radius:20px;padding:30px 34px;color:var(--a-mist);
  background:linear-gradient(165deg,rgba(23,50,76,.97),rgba(12,20,31,.98));border:1px solid rgba(127,227,240,.28);
  box-shadow:0 30px 80px -30px #000;
}
.oss-modal h3{margin:0 0 4px;font-size:21px;color:var(--a-mist)}
.oss-modal .sub{color:var(--a-grey);font-size:13.5px;margin:0 0 20px}
.oss-modal h4{margin:20px 0 6px;font-size:14px;color:var(--a-glow)}
.oss-modal p,.oss-modal li{font-size:14px}
.oss-modal ul{padding-left:20px;margin:6px 0}
.oss-modal .x{float:right;background:none;border:0;color:var(--a-grey);cursor:pointer;font-size:22px;line-height:1}
.oss-modal .x:hover{color:var(--a-glow)}
.oss-modal label{display:block;color:var(--a-grey);font-size:12px;margin:14px 0 6px}
.oss-modal input{width:100%;background:rgba(12,20,31,.85);border:1px solid var(--a-line2);color:var(--a-mist);padding:11px 14px;border-radius:12px;font-family:inherit;font-size:14px;outline:none}
.oss-modal input:focus{border-color:var(--a-glow)}
.oss-kbd{border:1px solid var(--a-line2);border-radius:6px;padding:1px 7px;font-size:12px;color:var(--a-grey)}

/* ---------- responsive ---------- */
.oss-burger{display:none}
@media (max-width:1000px){
  .oss-shell{grid-template-columns:1fr;height:calc(100vh - 76px)}
  .oss-side{position:absolute;left:0;top:0;bottom:0;width:270px;z-index:30;transform:translateX(-100%);transition:.28s}
  .oss-side.open{transform:none;box-shadow:0 0 60px rgba(0,0,0,.7)}
  .oss-burger{display:grid}
  .oss-stage{grid-template-columns:1fr}
  .oss-rail{position:static;order:-1}
  .oss-pad{padding:26px 20px 80px}
  .oss-doc{padding:24px 22px}
  .oss-msg{max-width:92%}
}
@media (prefers-reduced-motion:reduce){
  .oss-page *{animation:none !important;transition:none !important}
}