@import url("https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=DM+Mono:wght@400;500&display=swap");:root{--bg:#f4f6fa;--bg-subtle:#f9fafb;--surface:#ffffff;--surface-raised:#ffffff;--surface-overlay:rgba(255,255,255,0.85);--ink:#0f1724;--ink-2:#2c3547;--muted:#6b7485;--faint:#9ba5b4;--line:#e4e9f2;--line-strong:#cdd4e0;--accent:#2159d6;--accent-hover:#1a48bb;--accent-active:#153da0;--accent-soft:#eef2fd;--accent-mid:#c7d6f8;--success:#1a9e6b;--success-soft:#eaf8f2;--success-mid:#a3e4cc;--warning:#c97a00;--warning-soft:#fff8ea;--danger:#c8334a;--danger-soft:#fff0f2;--danger-hover:#b02a3e;--shadow-xs:0 1px 2px rgba(15,23,36,0.06);--shadow-sm:0 2px 8px rgba(15,23,36,0.07),0 1px 2px rgba(15,23,36,0.04);--shadow-md:0 4px 16px rgba(15,23,36,0.08),0 1px 4px rgba(15,23,36,0.04);--shadow-lg:0 8px 32px rgba(15,23,36,0.1),0 2px 8px rgba(15,23,36,0.05);--radius-sm:6px;--radius:10px;--radius-lg:14px;--radius-xl:18px;--sidebar-w:248px;--transition:150ms cubic-bezier(0.4,0,0.2,1)}*,:after,:before{box-sizing:border-box}html{min-height:100%;-webkit-font-smoothing:antialiased}body{margin:0;min-height:100vh;font-family:DM Sans,system-ui,sans-serif;font-size:15px;line-height:1.6;color:var(--ink);background:var(--bg)}a{color:inherit;text-decoration:none}img,svg{display:block;max-width:100%}h1,h2,h3,h4,h5,h6{margin:0;font-weight:600;line-height:1.2}p{margin:0}button,input,select,textarea{font:inherit}input,select{width:100%;margin-top:6px;padding:10px 13px;border:1.5px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);outline:none;transition:border-color var(--transition),box-shadow var(--transition);-webkit-appearance:none;-moz-appearance:none;appearance:none}input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(33,89,214,.12)}input::placeholder{color:var(--faint)}select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7485' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:34px}button,select{cursor:pointer}button{border:0;background:transparent}label{display:block;font-size:13.5px;font-weight:500;color:var(--ink-2)}code{font-family:DM Mono,SFMono-Regular,Consolas,monospace;font-size:.88em;padding:2px 6px;background:var(--bg);border:1px solid var(--line);border-radius:4px}.app-shell{display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr);min-height:100vh}.app-sidebar{position:-webkit-sticky;position:sticky;top:0;height:100vh;overflow-y:auto;background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:20px 14px;gap:4px}.app-content{display:grid;grid-gap:20px;gap:20px;padding:28px 32px;align-content:start}.sa-layout{display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr);min-height:100vh}.sa-sidebar{position:-webkit-sticky;position:sticky;top:0;height:100vh;overflow-y:auto;background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:20px 14px}.sa-brand{display:flex;align-items:center;gap:12px;padding:8px 10px 20px;border-bottom:1px solid var(--line);margin-bottom:12px}.sa-brand .brand-mark{width:36px;height:36px;font-size:16px;flex-shrink:0}.sa-brand .brand-name{font-size:14.5px;font-weight:700;color:var(--ink);letter-spacing:-.02em}.brand-role{font-size:11px;font-weight:600;color:var(--muted);margin-top:1px;text-transform:uppercase;letter-spacing:.08em}.sa-nav{display:flex;flex-direction:column;gap:2px;flex:1 1}.sa-nav-item{display:flex;align-items:center;gap:10px;padding:9px 11px;border-radius:var(--radius-sm);font-size:13.5px;font-weight:500;color:var(--muted);transition:background var(--transition),color var(--transition)}.sa-nav-item:hover{background:var(--bg);color:var(--ink)}.sa-nav-item.active{background:var(--accent-soft);color:var(--accent)}.sa-sidebar-footer{padding:14px 10px 0;border-top:1px solid var(--line);margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px}.sa-admin-name{font-size:13px;font-weight:500;color:var(--ink-2);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.sa-main{padding:32px 36px;display:flex;flex-direction:column;gap:24px;min-width:0}.sa-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.sa-title{font-size:22px;font-weight:700;color:var(--ink);letter-spacing:-.03em;margin-bottom:2px}.sa-subtitle{font-size:13.5px;color:var(--muted)}.sa-stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:14px;gap:14px}.sa-table-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden}.sa-table{width:100%;border-collapse:collapse}.sa-table th{padding:11px 16px;text-align:left;font-size:11.5px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;background:var(--bg-subtle);white-space:nowrap}.sa-table td,.sa-table th{border-bottom:1px solid var(--line)}.sa-table td{padding:13px 16px;font-size:14px;vertical-align:middle}.sa-table tr:last-child td{border-bottom:0}.sa-table tbody tr:hover{background:var(--bg-subtle)}.brand-block{display:flex;align-items:center;gap:12px;padding:8px 10px 20px;border-bottom:1px solid var(--line);margin-bottom:12px}.brand-block strong{display:block;font-size:14px;font-weight:700;color:var(--ink);letter-spacing:-.02em}.brand-block>div>span{display:block;font-size:12px;color:var(--muted);margin-top:1px}.brand-mark{display:grid;place-items:center;width:36px;height:36px;flex-shrink:0;border-radius:var(--radius-sm);background:var(--accent);color:#fff;font-weight:800;font-size:15px;letter-spacing:-.02em}.brand-name{font-size:14px;font-weight:700;color:var(--ink)}.sidebar-nav{display:flex;flex-direction:column;gap:2px;flex:1 1}.nav-item{display:block;padding:9px 11px;border-radius:var(--radius-sm);font-size:13.5px;font-weight:500;color:var(--muted);transition:background var(--transition),color var(--transition)}.nav-item:hover{background:var(--bg);color:var(--ink)}.nav-item.active{background:var(--accent-soft);color:var(--accent)}.sidebar-note{padding:14px 10px 0;border-top:1px solid var(--line);margin-top:auto}.sidebar-note .eyebrow{color:var(--faint);margin-bottom:4px}.sidebar-note strong{display:block;font-size:13px;color:var(--ink-2)}.sidebar-note p{font-size:12px;color:var(--muted);margin-top:2px}.auth-page{min-height:100vh;display:grid;place-items:center;padding:24px 16px;background:radial-gradient(ellipse 80% 60% at 50% -20%,rgba(33,89,214,.12) 0,transparent 70%),var(--bg)}.auth-card{width:100%;max-width:440px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);padding:36px 40px;display:flex;flex-direction:column;gap:6px}.auth-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}.auth-brand .brand-mark{width:32px;height:32px;font-size:14px}.auth-title{font-size:22px;font-weight:700;letter-spacing:-.03em;color:var(--ink)}.auth-subtitle{font-size:14px;color:var(--muted);margin-bottom:12px}.auth-hint{color:var(--muted);background:var(--bg-subtle);border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:4px}.auth-error,.auth-hint{font-size:13.5px;padding:10px 14px}.auth-error{color:var(--danger);background:var(--danger-soft);border:1px solid rgba(200,51,74,.2);border-radius:var(--radius-sm)}.auth-success{font-size:13.5px;color:var(--success);background:var(--success-soft);border:1px solid rgba(26,158,107,.2);border-radius:var(--radius-sm);padding:10px 14px;margin-bottom:4px}.auth-form{display:flex;flex-direction:column;gap:14px;margin-top:8px}.auth-back-link{display:block;text-align:center;font-size:13px;color:var(--muted);margin-top:8px;transition:color var(--transition)}.auth-back-link:hover{color:var(--accent)}.auth-divider{display:flex;align-items:center;gap:12px;margin:10px 0}.auth-divider:after,.auth-divider:before{content:"";flex:1 1;height:1px;background:var(--line)}.auth-divider span{font-size:12.5px;color:var(--faint);white-space:nowrap}.auth-steps{display:flex;align-items:center;margin-bottom:20px;padding:0 4px}.auth-step{width:28px;height:28px;flex-shrink:0;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;font-size:12px;font-weight:600;color:var(--faint);background:var(--surface);transition:all var(--transition)}.auth-step.active{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.auth-step.done{border-color:var(--success);background:var(--success);color:#fff}.auth-step-line{flex:1 1;height:2px;background:var(--line)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;min-height:38px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;letter-spacing:-.01em;transition:background var(--transition),color var(--transition),box-shadow var(--transition),transform var(--transition);white-space:nowrap;cursor:pointer;border:0}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);box-shadow:0 2px 8px rgba(33,89,214,.3)}.btn-ghost{background:transparent;color:var(--muted)}.btn-ghost:hover{background:var(--bg);color:var(--ink)}.btn-outline{background:transparent;color:var(--accent);border:1.5px solid var(--accent-mid)}.btn-outline:hover{background:var(--accent-soft)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:var(--danger-hover)}.btn-full{width:100%}.btn-sm{padding:5px 11px;min-height:30px;font-size:12.5px;border-radius:5px}.logout-btn{padding:5px 10px;font-size:12.5px;font-weight:500;color:var(--muted);border-radius:var(--radius-sm);transition:background var(--transition),color var(--transition)}.logout-btn:hover{background:var(--danger-soft);color:var(--danger)}.button{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;min-height:38px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;cursor:pointer;border:0;transition:background var(--transition),box-shadow var(--transition),transform var(--transition);white-space:nowrap}.button:hover{transform:translateY(-1px)}.button:active{transform:translateY(0)}.button:disabled{opacity:.5;cursor:not-allowed;transform:none}.button.primary{background:var(--accent);color:#fff}.button.primary:hover{background:var(--accent-hover);box-shadow:0 2px 8px rgba(33,89,214,.28)}.button.secondary{background:var(--bg);color:var(--ink-2);border:1px solid var(--line)}.button.secondary:hover{background:#ebeef5}.full-width{width:100%}.field{display:flex;flex-direction:column}.field-hint{font-size:12px;color:var(--faint);margin-top:5px}.field-error{font-size:12px;color:var(--danger);margin-top:4px;font-weight:500}.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:16px;gap:16px}.badge{display:inline-flex;align-items:center;padding:3px 9px;border-radius:100px;font-size:11.5px;font-weight:600}.badge-success{background:var(--success-soft);color:var(--success)}.badge-muted{background:var(--bg);color:var(--muted)}.badge-muted,.stat-card{border:1px solid var(--line)}.stat-card{background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);padding:18px 20px;display:flex;flex-direction:column;gap:4px}.stat-value{font-size:28px;font-weight:700;letter-spacing:-.04em;color:var(--ink);line-height:1}.stat-label{font-size:12.5px;font-weight:500;color:var(--muted);margin-top:4px}.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:28px 32px}.stacked-form{gap:28px}.form-section,.stacked-form{display:flex;flex-direction:column}.form-section{gap:16px}.form-section-title{font-size:13px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;border-bottom:1px solid var(--line);padding-bottom:10px}.form-actions{display:flex;align-items:center;justify-content:flex-end;gap:10px;padding-top:8px}.detail-rows{display:flex;flex-direction:column}.detail-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}.detail-row:last-child{border-bottom:0}.detail-label{font-size:13px;color:var(--muted);font-weight:500}.tenant-name{font-size:14px;font-weight:600;color:var(--ink)}.tenant-slug{font-size:12px;color:var(--muted);font-family:DM Mono,monospace;margin-top:2px}.row-actions{gap:6px;flex-wrap:nowrap}.empty-state,.row-actions{display:flex;align-items:center}.empty-state{flex-direction:column;gap:14px;padding:56px 24px;text-align:center;color:var(--muted)}.empty-state p{font-size:14px}.back-link{display:inline-flex;align-items:center;gap:4px;font-size:13px;font-weight:500;color:var(--muted);margin-bottom:8px;transition:color var(--transition)}.back-link:hover{color:var(--accent)}.workspace-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:0 0 4px}.workspace-header h1{font-size:clamp(20px,2.2vw,26px);font-weight:700;letter-spacing:-.03em;color:var(--ink);margin:2px 0 6px}.workspace-grid{display:flex;gap:20px;align-items:start}.workspace-grid-main{display:grid;grid-template-columns:1fr .9fr;grid-gap:20px;gap:20px}.workspace-grid-split{display:grid;grid-template-columns:1.55fr .9fr;grid-gap:20px;gap:20px}.workspace-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:20px 22px}.action-card{align-self:start}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line)}.section-heading h2{font-size:15.5px;font-weight:700;letter-spacing:-.02em;color:var(--ink);margin:0}.hero-band{display:grid;grid-template-columns:1.4fr .8fr;grid-gap:24px;gap:24px;padding:28px;border-radius:var(--radius-lg);background:linear-gradient(135deg,#1e3f9e,#2f5cd9 55%,#5b82eb);box-shadow:0 4px 24px rgba(33,89,214,.22);color:#fff}.student-hero{background:linear-gradient(135deg,#163070,#2159d6 55%,#5278e0)}.hero-copy h2{margin:10px 0 12px;font-size:clamp(16px,1.8vw,22px);line-height:1.3;font-weight:700}.hero-copy p{color:rgba(255,255,255,.82);font-size:14px;line-height:1.6}.hero-stats{display:grid;grid-gap:12px;gap:12px}.metric-card{padding:14px 16px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.metric-card span{display:block;font-size:11px;font-weight:600;color:rgba(255,255,255,.75);text-transform:uppercase;letter-spacing:.08em}.metric-card strong{display:block;font-size:26px;font-weight:700;letter-spacing:-.04em;margin:4px 0 2px}.metric-card p{font-size:12px;color:rgba(255,255,255,.7)}.kpi-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:14px;gap:14px}.soft-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-xs);padding:18px 20px}.soft-panel span{display:block;font-size:11.5px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.07em;margin-bottom:6px}.soft-panel strong{display:block;font-size:26px;font-weight:700;letter-spacing:-.04em;color:var(--ink);line-height:1;margin-bottom:4px}.soft-panel p{font-size:12.5px;color:var(--muted)}.eyebrow{margin:0 0 4px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--accent)}.lede{font-size:14px;line-height:1.6}.hint,.lede{color:var(--muted)}.hint{font-size:13px;line-height:1.5}.muted{color:var(--muted)}.chip{height:26px;background:var(--bg);border:1px solid var(--line);font-size:12px;font-weight:500;color:var(--muted);white-space:nowrap}.chip,.pill-tag{display:inline-flex;align-items:center;padding:0 10px;border-radius:100px}.pill-tag{height:24px;font-size:11.5px;font-weight:600;background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.22);margin-bottom:8px}.numeric-chip{display:inline-grid;place-items:center;min-width:26px;height:26px;padding:0 8px;border-radius:100px;font-size:12px;font-weight:700;background:var(--accent-soft);color:var(--accent)}.mini-chip{display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:4px;font-size:11px;font-weight:600;background:var(--success-soft);color:var(--success)}.toolbar-row{gap:8px}.cta-row,.toolbar-row{display:flex;align-items:center;flex-wrap:wrap}.cta-row{gap:10px;margin-top:12px}.seat-legend{gap:16px;margin-bottom:16px}.legend-item,.seat-legend{display:flex;align-items:center}.legend-item{gap:6px;font-size:12.5px;color:var(--muted);font-weight:500}.legend-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.legend-dot.open{background:var(--success)}.legend-dot.mine{background:var(--accent)}.legend-dot.filled{background:var(--line-strong)}.seat-admin-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:12px;gap:12px}.student-seat-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.seat-admin-card{display:flex;flex-direction:column;gap:6px;padding:14px;border-radius:var(--radius);border:1.5px solid var(--line);background:var(--surface);transition:border-color var(--transition),box-shadow var(--transition)}.seat-admin-card:hover{box-shadow:var(--shadow-sm)}.seat-admin-card.open{background:#f7fbf8;border-color:rgba(26,158,107,.25)}.seat-admin-card.filled{background:var(--bg-subtle);border-color:var(--line)}.seat-admin-card.selected{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 2px rgba(33,89,214,.15)}.seat-admin-head{display:flex;align-items:center;justify-content:space-between;gap:6px}.seat-index{height:22px;border-radius:4px;font-size:11.5px;font-weight:700;background:var(--bg);color:var(--ink-2);border:1px solid var(--line);font-family:DM Mono,monospace}.seat-badge,.seat-index{display:inline-flex;align-items:center;padding:0 7px}.seat-badge{height:20px;border-radius:100px;font-size:10.5px;font-weight:600}.seat-badge.open{background:var(--success-soft);color:var(--success)}.seat-badge.filled{background:var(--bg);color:var(--muted)}.seat-badge.mine{background:var(--accent-soft);color:var(--accent)}.seat-meta-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:4px;gap:4px;font-size:11.5px;color:var(--muted)}.seat-card-actions{display:flex;gap:6px}.activity-list{display:grid;grid-gap:0;gap:0}.activity-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14px}.activity-row:last-child{border-bottom:0;padding-bottom:0}.activity-row strong{font-size:15px;font-weight:600}.stack{display:grid;grid-gap:10px;gap:10px}.stack.compact{gap:4px}.table-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}th{padding:10px 14px;text-align:left;font-size:11.5px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;background:var(--bg-subtle);white-space:nowrap}td,th{border-bottom:1px solid var(--line)}td{padding:13px 14px;font-size:14px;vertical-align:middle}tbody tr:last-child td{border-bottom:0}tbody tr:hover{background:var(--bg-subtle)}.divider{height:1px;margin:16px 0;background:var(--line)}.form-two-up{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:12px;gap:12px}.segmented-stats{display:flex;gap:14px;font-size:12px;font-weight:500;color:var(--muted)}.segmented-stats span:before{content:"·";margin-right:6px}.segmented-stats span:first-child:before{content:"";margin-right:0}.trend-panel{display:flex;align-items:stretch;gap:20px}.trend-chart{flex:1 1;min-height:180px;display:flex;align-items:flex-end;gap:8px;padding:12px 0 0}.bar{flex:1 1;border-radius:4px 4px 0 0;background:linear-gradient(180deg,var(--accent) 0,rgba(33,89,214,.35) 100%);min-height:8px}.bar-1{height:32%}.bar-2{height:58%}.bar-3{height:44%}.bar-4{height:75%;opacity:.9}.bar-5{height:62%}.trend-legend{width:300px}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.landing-page{min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}.landing-nav{border-bottom:1px solid var(--line);background:var(--surface);position:-webkit-sticky;position:sticky;top:0;z-index:10}.landing-nav-inner{max-width:1100px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px}.landing-brand{display:flex;align-items:center;gap:10px;flex-shrink:0}.landing-brand-name{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:-.02em}.landing-nav-links{display:flex;align-items:center;gap:8px}.landing-hero{flex:1 1;max-width:1100px;margin:0 auto;width:100%;padding:72px 24px 64px;display:grid;grid-template-columns:1fr 380px;grid-gap:56px;gap:56px;align-items:center}.landing-hero-content{display:flex;flex-direction:column;gap:20px}.landing-h1{font-size:clamp(32px,5vw,52px);font-weight:700;line-height:1.1;letter-spacing:-.03em;color:var(--ink)}.landing-h1-accent{color:var(--accent)}.landing-lede{font-size:16px;line-height:1.7;color:var(--muted);max-width:520px}.landing-cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:4px}.landing-demo-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:28px;display:flex;flex-direction:column;gap:24px}.landing-demo-header{display:flex;flex-direction:column;gap:4px}.landing-demo-header h3{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.02em}.landing-demo-location{font-size:13px;color:var(--muted)}.landing-demo-stats{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:12px;gap:12px;padding:16px;background:var(--bg);border-radius:var(--radius)}.landing-demo-stat{display:flex;flex-direction:column;align-items:center;gap:2px;text-align:center}.landing-demo-stat strong{font-size:20px;font-weight:700;color:var(--ink);letter-spacing:-.02em}.landing-demo-stat span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.landing-features{max-width:1100px;margin:0 auto;width:100%;padding:0 24px 72px;display:grid;grid-template-columns:repeat(3,1fr);grid-gap:20px;gap:20px}.landing-feature-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 24px;display:flex;flex-direction:column;gap:12px}.landing-feature-icon{font-size:28px;line-height:1}.landing-feature-card h3{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.01em}.landing-feature-card p{font-size:14px;color:var(--muted);line-height:1.65}.landing-footer{border-top:1px solid var(--line);padding:20px 24px;display:flex;justify-content:space-between;align-items:center;max-width:1100px;margin:0 auto;width:100%;font-size:13px;color:var(--muted)}.landing-footer-link{color:var(--accent);font-weight:500}.landing-footer-link:hover{text-decoration:underline}@media (max-width:900px){.landing-hero{grid-template-columns:1fr;padding:48px 20px 40px;gap:36px}.landing-features{grid-template-columns:1fr;padding:0 20px 48px}.landing-nav-links .btn-ghost{display:none}}@media (max-width:520px){.landing-nav-links .btn-outline{display:none}.landing-demo-stats{grid-template-columns:repeat(3,1fr)}.landing-footer{flex-direction:column;gap:8px;text-align:center}}@media (max-width:1180px){.app-shell,.sa-layout{grid-template-columns:1fr}.app-sidebar,.sa-sidebar{position:static;height:auto;flex-direction:row;align-items:center;border-right:0;border-bottom:1px solid var(--line);padding:12px 16px;overflow-x:auto;gap:0}.brand-block,.sa-brand{border-bottom:0;margin-bottom:0;padding-bottom:0;padding-right:16px;margin-right:8px;border-right:1px solid var(--line)}.sa-nav,.sidebar-nav{flex-direction:row;flex:1 1;gap:2px;overflow-x:auto}.nav-item,.sa-nav-item{flex-shrink:0;white-space:nowrap}.sa-sidebar-footer,.sidebar-note{display:none}.app-content,.sa-main{padding:20px}.hero-band,.workspace-grid-main,.workspace-grid-split{grid-template-columns:1fr}.kpi-grid,.sa-stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.seat-admin-grid,.student-seat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.trend-panel{flex-direction:column}.trend-legend{width:auto}}@media (max-width:820px){.auth-card{padding:28px 24px}.field-grid,.form-two-up,.kpi-grid,.sa-stats-grid{grid-template-columns:1fr}.seat-admin-grid,.student-seat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.cta-row,.section-heading,.toolbar-row,.workspace-header{flex-direction:column;align-items:flex-start}.app-content,.sa-main{padding:16px}.form-card{padding:20px}}@media (max-width:520px){.seat-admin-grid,.student-seat-grid{grid-template-columns:1fr}.auth-card{padding:24px 20px}}