:root{
  --red:#b02d29;--red-dark:#84221f;--black:#111111;--graphite:#27272a;--muted:#6b7280;--line:#e5e7eb;
  --bg:#f7f7f8;--white:#ffffff;--gold:#c99a2e;--silver:#9aa0a6;--bronze:#a96f45;--green:#15803d;--shadow:0 14px 35px rgba(0,0,0,.08);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--black);line-height:1.5}
a{color:inherit;text-decoration:none}img{max-width:100%}.container{width:min(1160px,calc(100% - 32px));margin:auto}
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:78px;gap:24px}.brand{display:flex;align-items:center;gap:12px}.brand img{width:50px;height:50px;object-fit:contain;border-radius:12px;background:#fff}.brand strong{display:block;font-size:1.05rem;letter-spacing:.04em}.brand span{display:block;color:var(--muted);font-size:.76rem}.site-header nav{display:flex;align-items:center;gap:18px;font-weight:650;font-size:.92rem}.site-header nav a:hover{color:var(--red)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border:none;border-radius:12px;font-weight:800;cursor:pointer;transition:.18s ease}.btn:hover{transform:translateY(-1px)}.btn-red{background:var(--red);color:#fff}.btn-red:hover{background:var(--red-dark)}.btn-dark{background:var(--black);color:#fff}.btn-outline{background:#fff;border:1px solid var(--line)}.btn-sm{padding:9px 13px;border-radius:10px;font-size:.86rem}.btn-success{background:var(--green);color:#fff}.btn-danger{background:#991b1b;color:#fff}
.hero{background:linear-gradient(135deg,#fff 0%,#fff 55%,#f6e9e8 100%);padding:76px 0 56px;border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:52px;align-items:center}.eyebrow{display:inline-block;color:var(--red);font-weight:900;letter-spacing:.08em;font-size:.78rem;text-transform:uppercase;margin-bottom:12px}.hero h1{font-size:clamp(2.3rem,5vw,4.5rem);line-height:1.02;margin:0 0 18px;letter-spacing:-.035em}.hero h1 span{color:var(--red)}.hero p{font-size:1.12rem;color:#4b5563;max-width:690px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.hero-logo-card{background:#fff;border:1px solid var(--line);border-radius:30px;padding:28px;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center}.hero-logo-card img{max-height:390px;object-fit:contain}
.section{padding:58px 0}.section-title{margin:0 0 10px;font-size:2rem;letter-spacing:-.02em}.section-sub{margin:0 0 28px;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 7px 22px rgba(0,0,0,.04)}.card h3{margin:0 0 9px}.card p{margin:0;color:var(--muted)}.stat{font-size:2rem;font-weight:900;margin:5px 0}.accent-top{border-top:4px solid var(--red)}
.form-card{max-width:860px;margin:38px auto;background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow)}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.form-group{display:flex;flex-direction:column;gap:7px}.form-group.full{grid-column:1/-1}label{font-size:.9rem;font-weight:800}input,select,textarea{width:100%;border:1px solid #d1d5db;border-radius:11px;padding:11px 12px;font:inherit;background:#fff}input:focus,select:focus,textarea:focus{outline:3px solid rgba(176,45,41,.12);border-color:var(--red)}textarea{min-height:110px}.help{font-size:.82rem;color:var(--muted)}.required{color:var(--red)}
.flash{margin-top:18px;border-radius:12px;padding:12px 14px;font-weight:650}.flash-success{background:#ecfdf5;color:#166534;border:1px solid #bbf7d0}.flash-error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}.flash-info{background:#eff6ff;color:#1e40af;border:1px solid #bfdbfe}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px;background:#fff}.data-table{width:100%;border-collapse:collapse;min-width:760px}.data-table th,.data-table td{padding:12px 13px;text-align:left;border-bottom:1px solid var(--line);font-size:.9rem}.data-table th{background:#fafafa;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:#52525b}.data-table tr:last-child td{border-bottom:none}.pill{display:inline-flex;border-radius:999px;padding:5px 9px;font-size:.75rem;font-weight:850;background:#f3f4f6}.pill-red{background:#fee2e2;color:#991b1b}.pill-green{background:#dcfce7;color:#166534}.pill-yellow{background:#fef3c7;color:#92400e}.pill-black{background:#18181b;color:#fff}
.site-footer{background:#111;color:#fff;margin-top:60px;padding:36px 0}.footer-grid{display:flex;justify-content:space-between;gap:28px}.site-footer p{color:#a1a1aa;margin:.35rem 0 0}.footer-right{color:#a1a1aa}
.exam-page{background:#eceff1;height:100vh;overflow:hidden}.exam-topbar{height:68px;background:#111;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 18px;gap:14px}.exam-brand{display:flex;align-items:center;gap:10px}.exam-brand img{width:42px;height:42px;object-fit:contain;background:#fff;border-radius:9px}.exam-meta{font-size:.84rem;color:#d4d4d8}.timer{font-size:1.45rem;font-weight:900;background:var(--red);padding:8px 14px;border-radius:10px;font-variant-numeric:tabular-nums}.exam-shell{height:calc(100vh - 68px);display:grid;grid-template-columns:minmax(0,2.3fr) minmax(310px,.7fr);gap:0}.pdf-pane{background:#3f3f46;display:flex;flex-direction:column}.pdf-toolbar{height:48px;background:#27272a;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 14px;font-size:.85rem}.pdf-frame{width:100%;height:100%;border:0;background:#52525b}.answers-pane{background:#fff;border-left:1px solid #d4d4d8;display:flex;flex-direction:column;min-width:0}.answers-head{padding:16px;border-bottom:1px solid var(--line)}.answers-head h2{font-size:1.05rem;margin:0 0 5px}.progress-line{color:var(--muted);font-size:.86rem}.answer-list{padding:12px;overflow-y:auto;flex:1}.answer-row{display:grid;grid-template-columns:36px repeat(5,1fr);align-items:center;gap:6px;padding:8px 4px;border-bottom:1px solid #f1f1f1}.qnum{font-weight:900;text-align:center}.answer-option input{position:absolute;opacity:0}.answer-option label{display:flex;align-items:center;justify-content:center;border:1px solid #d4d4d8;border-radius:9px;height:34px;cursor:pointer;font-size:.8rem}.answer-option input:checked+label{background:var(--red);color:#fff;border-color:var(--red)}.answers-footer{padding:14px;border-top:1px solid var(--line);display:grid;gap:9px}.save-status{font-size:.78rem;color:var(--muted);text-align:center}.mobile-tabs{display:none}
.rank-hero{padding:44px 0 24px;background:#18181b;color:#fff}.rank-hero h1{margin:0}.filters{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.podium{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:25px 0}.podium-card{background:#fff;border-radius:18px;padding:22px;border:1px solid var(--line);text-align:center;box-shadow:0 10px 25px rgba(0,0,0,.05)}.medal{font-size:2rem}.podium-card.gold{border-top:5px solid var(--gold)}.podium-card.silver{border-top:5px solid var(--silver)}.podium-card.bronze{border-top:5px solid var(--bronze)}
.admin-body{background:#f4f4f5}.admin-shell{display:grid;grid-template-columns:250px 1fr;min-height:100vh}.admin-sidebar{background:#111;color:#fff;padding:16px;position:sticky;top:0;height:100vh}.admin-brand{display:flex;align-items:center;gap:10px;padding:6px 6px 18px;border-bottom:1px solid #2f2f32;margin-bottom:14px}.admin-brand img{width:46px;height:46px;object-fit:contain;background:#fff;border-radius:10px}.admin-brand small{display:block;color:#a1a1aa}.admin-sidebar nav{display:grid;gap:4px}.admin-sidebar nav a{padding:10px 11px;border-radius:9px;color:#e4e4e7;font-size:.91rem}.admin-sidebar nav a:hover{background:#27272a;color:#fff}.admin-main{min-width:0}.admin-topbar{height:64px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:20}.admin-topbar a{color:var(--red);font-weight:800}.admin-content{padding:24px}.admin-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.toolbar{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}.toolbar-actions{display:flex;flex-wrap:wrap;gap:9px}.panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;margin-bottom:18px}.panel h2,.panel h3{margin-top:0}.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at top right,#f8dddb 0%,#f5f5f5 42%,#fff 100%)}.login-card{width:min(430px,100%);background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow)}.login-logo{display:flex;justify-content:center;margin-bottom:12px}.login-logo img{width:100px;height:100px;object-fit:contain}
.code-box{background:#111;color:#fff;font-size:1.55rem;font-weight:900;letter-spacing:.12em;padding:16px;border-radius:14px;text-align:center}.success-card{max-width:720px;margin:40px auto;background:#fff;border-radius:20px;padding:30px;border:1px solid var(--line);box-shadow:var(--shadow);text-align:center}.success-icon{width:68px;height:68px;border-radius:50%;background:#dcfce7;color:#166534;display:grid;place-items:center;margin:0 auto 16px;font-size:2rem;font-weight:900}
@media(max-width:900px){.site-header nav{display:none}.hero-grid{grid-template-columns:1fr}.hero-logo-card{display:none}.cards,.admin-grid{grid-template-columns:repeat(2,1fr)}.admin-shell{grid-template-columns:1fr}.admin-sidebar{position:relative;height:auto}.admin-sidebar nav{grid-template-columns:repeat(2,1fr)}.exam-shell{grid-template-columns:1fr}.answers-pane{display:none;border-left:0}.pdf-pane{display:flex}.mobile-tabs{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:50;background:#fff;border-top:1px solid var(--line);padding:8px;gap:8px}.mobile-tabs button{flex:1}.exam-page.show-answers .pdf-pane{display:none}.exam-page.show-answers .answers-pane{display:flex}.answers-footer{padding-bottom:70px}}
@media(max-width:620px){.container{width:min(100% - 20px,1160px)}.hero{padding-top:45px}.hero h1{font-size:2.55rem}.cards,.form-grid,.admin-grid,.podium{grid-template-columns:1fr}.footer-grid{display:grid}.admin-sidebar nav{grid-template-columns:1fr 1fr}.admin-content{padding:14px}.exam-topbar{height:76px}.exam-shell{height:calc(100vh - 76px)}.timer{font-size:1.1rem}.exam-meta{display:none}}

.top-ten-row td{background:#fffaf0}.top-ten-row td:first-child{border-left:4px solid var(--gold)}