/* MINH THI OS — premium SaaS dashboard (canonical CSS).
   Source: apps/os/public/assets/css/os_styles.css — served via /os_assets.php (PV12-021). */
:root{
  --bg:#F1F5F9; --side:#0B1424; --side-2:#0a1120; --line:#E5E7EB;
  --primary:#2563EB; --primary-d:#1d4ed8; --success:#10B981; --warning:#F59E0B; --danger:#EF4444;
  --text:#0F172A; --muted:#64748B; --card:#fff;
  --side-text:#cbd5e1; --side-muted:#64748b; --side-hover:rgba(255,255,255,.06);
  --radius:16px; --shadow:0 1px 2px rgba(15,23,42,.04),0 6px 20px rgba(15,23,42,.05);
  --side-w:248px; --side-wc:72px;
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:Inter,"Plus Jakarta Sans",Manrope,"Segoe UI",system-ui,Arial,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-size:14px}
a{color:inherit;text-decoration:none}
.os-shell{display:flex;min-height:100vh}

/* ---------- SIDEBAR ---------- */
.os-side{width:var(--side-w);background:linear-gradient(180deg,var(--side),var(--side-2));color:var(--side-text);position:fixed;inset:0 auto 0 0;display:flex;flex-direction:column;transition:width .18s ease,transform .2s ease;z-index:50}
.os-brand{display:flex;align-items:center;gap:11px;padding:16px 16px 14px;border-bottom:1px solid rgba(255,255,255,.06)}
.os-brand .mt{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,#f59e0b,#b45309);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:14px;letter-spacing:.5px;flex:0 0 auto;box-shadow:0 4px 12px rgba(245,158,11,.3)}
.os-brand .bt{font-weight:700;color:#fff;font-size:15px;line-height:1.1;white-space:nowrap}
.os-brand .bt small{display:block;font-weight:400;font-size:11px;color:var(--side-muted);margin-top:2px}
.os-nav{flex:1;overflow-y:auto;padding:8px 10px 10px;scrollbar-width:thin}
.os-nav::-webkit-scrollbar{width:6px}.os-nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.08);border-radius:4px}
.os-group{margin:5px 0}
.os-ghead{width:100%;display:flex;align-items:center;gap:8px;background:none;border:none;color:#94a3b8;font:inherit;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:14px 10px 8px;cursor:pointer}
.os-ghead .chev{margin-left:auto;font-size:11px;transition:transform .15s ease;opacity:.6}
.os-group.open .os-ghead .chev{transform:rotate(90deg)}
.os-gitems{display:none;padding:2px 0 6px}
.os-group.open .os-gitems{display:block}
.os-nav a{display:flex;align-items:center;gap:13px;padding:11px 12px;border-radius:10px;color:var(--side-text);font-size:14.5px;margin:3px 0;position:relative}
.os-nav a:hover{background:var(--side-hover);color:#fff}
.os-nav a.active{background:var(--primary);color:#fff;font-weight:600;box-shadow:0 6px 16px rgba(37,99,235,.4)}
.os-nav a.active::before{content:"";position:absolute;left:-10px;top:8px;bottom:8px;width:4px;border-radius:0 4px 4px 0;background:#93c5fd}
.os-ico{width:20px;text-align:center;flex:0 0 auto;font-size:16px;opacity:.95}
.os-lbl{white-space:nowrap;overflow:hidden}
.os-badge{margin-left:auto;background:var(--danger);color:#fff;font-size:10px;font-weight:700;border-radius:9px;padding:1px 6px}
/* v2 sidebar hierarchy — sub-group labels inside a group (parent→child clarity) */
.os-subhead{font-size:10px;font-weight:800;text-transform:uppercase;letter-spacing:.09em;color:rgba(148,163,184,.55);padding:5px 12px 3px;margin-top:13px;user-select:none;pointer-events:none}
.os-gitems>.os-subhead:first-child{margin-top:2px}
.os-group[data-group="aistudio"] .os-gitems a,.os-group[data-group="mkt"] .os-gitems a{margin-left:9px;padding-left:13px;border-left:2px solid rgba(255,255,255,.05)}
.os-group[data-group="aistudio"] .os-gitems a.active,.os-group[data-group="mkt"] .os-gitems a.active{border-left-color:transparent}
/* AI Engine — technical area: de-emphasised + warning note */
.os-group[data-group="aiplatform"] .os-ghead{color:#6b7686}
.os-group[data-group="aiplatform"] .os-gitems a{font-size:13px;opacity:.68}
.os-group[data-group="aiplatform"] .os-gitems a:hover{opacity:1}
.os-technote{font-size:10.5px;line-height:1.45;color:#d9a066;background:rgba(180,83,9,.12);border:1px solid rgba(180,83,9,.22);border-radius:8px;padding:7px 10px;margin:2px 6px 9px}
/* collapsed rail — hide sub labels/notes, drop indent */
body.os-collapsed .os-subhead,body.os-collapsed .os-technote{display:none}
body.os-collapsed .os-group[data-group="aistudio"] .os-gitems a,body.os-collapsed .os-group[data-group="mkt"] .os-gitems a{margin-left:0;padding-left:0;border-left:0}
.os-side .user{display:flex;align-items:center;gap:10px;padding:12px 14px;border-top:1px solid rgba(255,255,255,.06)}
.os-side .user .av{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,#2563EB,#7c3aed);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;flex:0 0 auto}
.os-side .user .nm{font-size:13px;color:#fff;line-height:1.2;white-space:nowrap}
.os-side .user .nm small{display:block;color:var(--side-muted);font-size:11px}
.os-side .user .nm small b{color:var(--success);font-weight:600}
.os-collapse{display:flex;align-items:center;gap:8px;justify-content:center;padding:9px;margin:0 10px 8px;border-radius:10px;background:rgba(255,255,255,.04);color:var(--side-muted);font-size:12px;cursor:pointer;border:none;width:calc(100% - 20px)}
.os-collapse:hover{background:var(--side-hover);color:#fff}

/* collapsed sidebar */
body.os-collapsed .os-side{width:var(--side-wc)}
body.os-collapsed .os-main{margin-left:var(--side-wc)}
body.os-collapsed .os-brand .bt,body.os-collapsed .os-lbl,body.os-collapsed .os-ghead span:not(.chev),body.os-collapsed .os-badge,body.os-collapsed .user .nm,body.os-collapsed .os-collapse span{display:none}
body.os-collapsed .os-ghead{justify-content:center;padding:8px 0}
body.os-collapsed .os-ghead .chev{display:none}
body.os-collapsed .os-gitems{display:block}

/* ═══ AI Studio UI/UX 2.0 — WHITE SIDEBAR (Notion / Linear / Shopify) — overrides above ═══ */
:root{ --side:#ffffff; --side-2:#ffffff; --side-text:#334155; --side-muted:#94a3b8; --side-hover:#f1f5f9; }
.os-side{background:#fff;border-right:1px solid var(--line);box-shadow:none}
.os-brand{border-bottom:1px solid var(--line)}
.os-brand .bt{color:var(--text)}
.os-nav::-webkit-scrollbar-thumb{background:#e2e8f0}
.os-nav a{color:#334155}
.os-nav a:hover{background:#f5f7fa;color:#0f172a}
.os-nav a.active{background:#eff6ff;color:var(--primary);font-weight:600;box-shadow:none}
.os-nav a.active .os-ico{opacity:1}
.os-nav a.active::before{background:var(--primary)}
.os-ghead{color:#9aa3b2}
.os-subhead{color:#a2abba}
.os-group[data-group="aistudio"] .os-gitems a,.os-group[data-group="mkt"] .os-gitems a{border-left-color:#eef1f6}
.os-group[data-group="aistudio"] .os-gitems a.active,.os-group[data-group="mkt"] .os-gitems a.active{border-left-color:transparent}
/* AI Engine — dịu hơn AI Studio, ít nổi bật */
.os-group[data-group="aiplatform"] .os-ghead{color:#b0b7c2}
.os-group[data-group="aiplatform"] .os-gitems a{opacity:.55}
.os-group[data-group="aiplatform"] .os-gitems a:hover{opacity:1}
.os-technote{color:#b45309;background:#fffbeb;border-color:#fde68a}
.os-collapse{background:#f5f7fa;color:var(--muted)}
.os-collapse:hover{background:#eef1f6;color:var(--text)}
.os-side .user{border-top:1px solid var(--line)}
.os-side .user .nm{color:var(--text)}
.os-nav{scrollbar-width:thin;scroll-behavior:smooth}

/* ═══ SIDEBAR STYLE giống noithatminhthi admin (ACE nav-list): trắng, cha rõ, con thụt vào, vạch xanh ═══ */
/* Header logo gọn, nền trắng */
.os-brand{background:#fff;padding:15px 16px 13px}
.os-brand .mt{width:34px;height:34px;border-radius:8px;box-shadow:none}
.os-brand .bt{font-size:14.5px}
/* Item CHA: dòng menu thật (icon + chữ + mũi tên), không viết hoa nhỏ xíu */
.os-ghead{text-transform:none;letter-spacing:0;font-size:13.5px;font-weight:600;color:#48546a;padding:11px 12px;border-radius:8px;margin:1px 0}
.os-ghead:hover{background:#f5f7fa;color:#1f2937}
.os-group.open>.os-ghead{color:#1f2937}
.os-ghead .chev{opacity:.4;font-size:10px}
/* Item CON: thụt vào dưới 1 đường guide dọc (kiểu submenu admin) */
.os-gitems{margin-left:19px;padding:2px 0 6px;border-left:1px solid #e7eaf0}
.os-nav a{font-size:13px;gap:10px;padding:8px 11px;margin:1px 0;border-radius:0 7px 7px 0;color:#5b6472}
.os-nav a .os-ico{width:18px;font-size:14px;opacity:.9}
.os-nav a:hover{background:#f5f7fa;color:#1f2937}
/* Active: nền xanh nhạt + chữ xanh + vạch xanh bên trái, không shadow chói */
.os-nav a.active{background:#eff6ff;color:#2563EB;font-weight:600;box-shadow:inset 2px 0 0 #2563EB}
.os-nav a.active::before{display:none}
.os-nav a.active .os-ico{opacity:1}
/* Bỏ indent/rail per-item cũ — đã thay bằng guide line trên .os-gitems */
.os-group[data-group="aistudio"] .os-gitems a,.os-group[data-group="mkt"] .os-gitems a{margin-left:0;padding-left:11px;border-left:0}
.os-subhead{padding-left:11px;margin-left:0;color:#aab2c0}
/* AI Engine · Kỹ thuật: dịu hơn, ít nổi bật hơn AI Studio */
.os-group[data-group="aiplatform"]>.os-ghead{color:#9aa3b2}
.os-group[data-group="aiplatform"] .os-gitems a{opacity:.6;font-size:12.5px}
.os-group[data-group="aiplatform"] .os-gitems a:hover{opacity:1}
/* Thu gọn: bỏ guide line + indent, item về giữa */
body.os-collapsed .os-gitems{margin-left:0;border-left:0;padding-left:0}
body.os-collapsed .os-nav a{border-radius:8px;justify-content:center;padding:10px 0}
body.os-collapsed .os-nav a.active{box-shadow:none;background:#eff6ff}
body.os-collapsed .os-nav a{justify-content:center;padding:10px 0}

/* ---------- MAIN ---------- */
.os-main{flex:1;margin-left:var(--side-w);min-width:0;transition:margin .18s ease}
.os-top{height:64px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;padding:0 22px;position:sticky;top:0;z-index:40}
.os-top .burger{background:none;border:none;font-size:20px;cursor:pointer;color:#334155;padding:6px}
.os-search{position:relative;flex:1;max-width:440px}
.os-search input{width:100%;height:42px;border:1px solid var(--line);border-radius:12px;padding:0 64px 0 40px;background:#f8fafc;font-size:14px}
.os-search .si{position:absolute;left:13px;top:11px;color:var(--muted)}
.os-search .kbd{position:absolute;right:10px;top:9px;font-size:11px;color:var(--muted);background:#fff;border:1px solid var(--line);border-radius:7px;padding:3px 7px}
.os-top .spacer{flex:1}
.os-hw{display:flex;align-items:center;gap:9px;padding:5px 12px;border-left:1px solid var(--line)}
.os-hw .ic{position:relative;font-size:18px}
.os-hw .ic .bdg{position:absolute;top:-6px;right:-8px;background:var(--danger);color:#fff;font-size:9px;font-weight:700;border-radius:9px;padding:1px 5px}
.os-hw .tx{font-size:12px;line-height:1.2}.os-hw .tx b{display:block;font-size:13px;color:var(--text)}.os-hw .tx span{color:var(--muted)}
.os-hw .ok{color:var(--success)}
.os-user{display:flex;align-items:center;gap:9px;padding-left:8px;cursor:pointer}
.os-user .av{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#2563EB,#7c3aed);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600}
.os-user .tx{font-size:13px;line-height:1.2}.os-user .tx small{display:block;color:var(--muted);font-size:11px}
.os-env{font-size:10px;font-weight:700;color:#92400e;background:#fef3c7;border:1px solid #fde68a;border-radius:8px;padding:3px 8px}

.os-page{padding:22px;max-width:1340px;margin:0 auto}
.os-hello{display:flex;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.os-hello h1{font-size:24px;margin:0 0 4px}
.os-hello .sub{color:var(--muted);margin:0;font-size:14px}
.os-date{background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 14px;font-size:13px;color:var(--muted)}

/* stat cards */
.os-stats{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin-bottom:18px}
.os-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.os-stat .top{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:12.5px}
.os-stat .v{font-size:26px;font-weight:700;margin:8px 0 4px}
.os-stat .d{font-size:11.5px;display:flex;align-items:center;gap:4px}
.os-stat .d.up{color:var(--success)}.os-stat .d.down{color:var(--danger)}
.dot{width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 auto}
.dot.b{background:#dbeafe;color:#2563EB}.dot.g{background:#d1fae5;color:#059669}.dot.a{background:#fef3c7;color:#b45309}.dot.r{background:#fee2e2;color:#dc2626}.dot.p{background:#ede9fe;color:#7c3aed}.dot.c{background:#cffafe;color:#0891b2}

/* generic grids/panels */
.grid-3{display:grid;grid-template-columns:1.15fr 1fr 1.15fr;gap:14px;margin-bottom:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}
.grid-2{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px;margin-bottom:18px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
.panel .ph{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.panel .ph h3{margin:0;font-size:15px}
.panel .ph .sel{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:8px;padding:4px 9px}
.muted{color:var(--muted)} .small{font-size:12px}

/* bar chart */
.bars{display:flex;align-items:flex-end;gap:10px;height:190px;padding-top:8px}
.bars .col{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%;justify-content:flex-end}
.bars .bar{width:60%;background:linear-gradient(180deg,#60a5fa,#2563EB);border-radius:6px 6px 0 0;min-height:4px}
.bars .bx{font-size:10.5px;color:var(--muted)}
.legend{display:flex;gap:14px;font-size:12px;color:var(--muted);margin-bottom:6px}
.legend i{display:inline-block;width:9px;height:9px;border-radius:3px;margin-right:5px}

/* donut */
.donut-wrap{display:flex;align-items:center;gap:18px}
.donut{width:150px;height:150px;border-radius:50%;flex:0 0 auto;display:flex;align-items:center;justify-content:center;position:relative}
.donut::after{content:"";position:absolute;width:96px;height:96px;background:#fff;border-radius:50%}
.donut .ctr{position:relative;z-index:1;text-align:center}.donut .ctr b{display:block;font-size:22px}.donut .ctr span{font-size:11px;color:var(--muted)}
.chl{font-size:12.5px}.chl div{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:6px 0}
.chl i{width:9px;height:9px;border-radius:3px;display:inline-block;margin-right:7px}

/* lists */
.os-list .li{display:flex;align-items:center;gap:11px;padding:10px 0;border-bottom:1px solid #f1f5f9;font-size:13px}
.os-list .li:last-child{border-bottom:none}
.os-list .li .ic{width:30px;height:30px;border-radius:9px;background:#f1f5f9;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.os-list .li .rt{margin-left:auto;color:var(--muted);font-size:11.5px;text-align:right;white-space:nowrap}
.st-on{color:var(--success);font-weight:600}.st-up{color:var(--warning);font-weight:600}.st-err{color:var(--danger);font-weight:600}
.rank{width:24px;height:24px;border-radius:7px;background:#eff6ff;color:#2563EB;font-weight:700;font-size:12px;display:flex;align-items:center;justify-content:center}

/* quick actions */
.qa{display:grid;grid-template-columns:repeat(8,1fr);gap:12px}
.qa a{display:flex;flex-direction:column;align-items:center;gap:8px;padding:14px 6px;border:1px solid var(--line);border-radius:12px;color:var(--text);font-size:12px;text-align:center;background:#fff;transition:.15s}
.qa a:hover{border-color:var(--primary);box-shadow:0 6px 16px rgba(37,99,235,.12);transform:translateY(-1px)}
.qa .qi{width:40px;height:40px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:17px}

/* mini KPI row + sparkline */
.kpi{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px}
.kpi .b{font-size:12px;color:var(--muted)}.kpi .n{font-size:18px;font-weight:700}.kpi .c{font-size:11px;color:var(--success)}
.spark{display:flex;align-items:flex-end;gap:5px;height:90px}
.spark span{flex:1;background:#c7d2fe;border-radius:4px 4px 0 0;min-height:6px}

/* todo */
.todo .li{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid #f1f5f9;font-size:13px}
.todo .li:last-child{border-bottom:none}
.todo .pr{margin-left:auto;font-size:11px;color:var(--muted)}
.todo .bar{width:60px;height:6px;background:#eef2f7;border-radius:4px;overflow:hidden}.todo .bar i{display:block;height:100%;background:var(--primary)}

.os-foot{padding:14px 22px;color:var(--muted);font-size:12px;border-top:1px solid var(--line);display:flex;justify-content:space-between;background:#fff}

/* login */
.os-login{min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(1000px 460px at 50% -10%,#dbeafe,transparent),var(--bg);padding:20px}
.os-login .card{width:100%;max-width:404px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 24px 60px rgba(15,23,42,.14);padding:36px 32px}
.os-login .brand{display:flex;align-items:center;gap:11px;margin-bottom:4px}
.os-login .brand .mt{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,#f59e0b,#b45309);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800}
.os-login .brand b{font-size:19px}.os-login .brand small{display:block;color:var(--muted);font-size:12px;font-weight:400}
.os-login p.s{color:var(--muted);font-size:13.5px;margin:14px 0 20px}
.os-login label{display:block;font-size:13px;font-weight:600;margin:14px 0 6px}
.os-login input[type=text],.os-login input[type=password]{width:100%;height:46px;border:1px solid var(--line);border-radius:12px;padding:0 14px;font-size:14px;background:#f8fafc}
.os-login input:focus{outline:none;border-color:var(--primary);background:#fff}
.os-login .row{display:flex;align-items:center;justify-content:space-between;margin:16px 0 20px;font-size:13px;color:var(--muted)}
.os-login button{width:100%;height:48px;background:var(--primary);color:#fff;border:none;border-radius:12px;font-weight:600;font-size:15px;cursor:pointer}
.os-login button:hover{background:var(--primary-d)}
.os-login .err{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca;padding:10px 12px;border-radius:10px;font-size:13px;margin-bottom:10px}

/* responsive */
@media(max-width:1280px){.os-stats{grid-template-columns:repeat(3,1fr)}.qa{grid-template-columns:repeat(4,1fr)}}
@media(max-width:1100px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr}}
@media(max-width:860px){
  .os-side{transform:translateX(-100%)} body.os-sopen .os-side{transform:none}
  .os-main{margin-left:0!important} .os-hw{display:none} .os-search{display:none}
}
@media(max-width:600px){.os-stats{grid-template-columns:1fr 1fr}.qa{grid-template-columns:repeat(2,1fr)}.os-page{padding:14px}.os-user .tx{display:none}}

/* PV12-014D — wizard (Tạo Website) */
.stepper{display:flex;gap:8px;margin-bottom:18px;flex-wrap:wrap}
.stepper .st{display:flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:12.5px;color:var(--muted)}
.stepper .st .n{width:22px;height:22px;border-radius:50%;background:#eef2f7;color:var(--muted);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:11px;flex:0 0 auto}
.stepper .st.active{border-color:var(--primary);color:var(--primary);background:#eff6ff}
.stepper .st.active .n{background:var(--primary);color:#fff}
.stepper .st.done{color:var(--success);border-color:#bbf7d0;background:#f0fdf4}
.stepper .st.done .n{background:var(--success);color:#fff}
.os-form label{display:block;font-size:13px;font-weight:600;margin:12px 0 6px;color:#334155}
.os-form input,.os-form select{width:100%;height:42px;border:1px solid var(--line);border-radius:10px;padding:0 12px;font-size:14px;background:#fff}
.os-form input:focus,.os-form select:focus{outline:none;border-color:var(--primary)}
.os-form .fg{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.os-form h4{margin:20px 0 2px;font-size:14px;color:#0f172a}
.os-form .hint{color:var(--muted);font-size:12px;margin:6px 0 0}
.btn-row{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}
.os-btn{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 18px;background:var(--primary);color:#fff;border:none;border-radius:10px;font-weight:600;font-size:14px;cursor:pointer;text-decoration:none}
.os-btn:hover{background:var(--primary-d)}
.os-btn.ghost{background:#fff;color:var(--text);border:1px solid var(--line)}
.os-btn.success{background:var(--success)}.os-btn.success:hover{background:#059669}
.review-tb{width:100%;border-collapse:collapse;font-size:13.5px}
.review-tb th{width:200px;text-align:left;color:var(--muted);font-weight:500;padding:8px 10px;border-bottom:1px solid #f1f5f9}
.review-tb td{padding:8px 10px;border-bottom:1px solid #f1f5f9;font-weight:600}
@media(max-width:700px){.os-form .fg{grid-template-columns:1fr}}