:root{
  --vo-bg:#f2efe7;
  --vo-paper:#fffdf8;
  --vo-ink:#1f2933;
  --vo-muted:#6b7280;
  --vo-accent:#0f766e;
  --vo-accent-2:#d97706;
  --vo-border:#ded6c6;
  --vo-bad:#b91c1c;
  --vo-good:#047857;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:radial-gradient(circle at 20% 0,#fff8dd 0,#f2efe7 34%,#e9edf0 100%);color:var(--vo-ink);font-family:Georgia,'Times New Roman',serif}
button,input{font:inherit}
.vo-app{max-width:1220px;margin:0 auto;padding:28px 18px 56px}
.vo-hero{display:flex;justify-content:space-between;gap:22px;align-items:flex-end;margin-bottom:24px;padding:28px;border:1px solid rgba(31,41,51,.13);border-radius:28px;background:linear-gradient(135deg,rgba(255,253,248,.94),rgba(238,244,241,.88));box-shadow:0 24px 60px rgba(15,23,42,.10)}
.vo-kicker{text-transform:uppercase;letter-spacing:.14em;font-size:12px;color:var(--vo-accent);font-weight:700}
h1{margin:6px 0 8px;font-size:clamp(30px,4vw,54px);line-height:1.02}.vo-hero p{margin:0;max-width:720px;color:var(--vo-muted);font-size:18px}
.vo-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.vo-card{position:relative;min-height:160px;padding:18px;border:1px solid var(--vo-border);border-radius:22px;background:linear-gradient(160deg,#fffdf8,#eef8f5);box-shadow:0 16px 34px rgba(15,23,42,.10);display:flex;flex-direction:column;justify-content:space-between;overflow:hidden}.vo-card:before{content:"";position:absolute;right:-32px;top:-32px;width:108px;height:108px;border-radius:999px;background:rgba(15,118,110,.12)}.vo-card h2{position:relative;margin:0;font-size:25px}.vo-card p{position:relative;margin:8px 0 16px;color:var(--vo-muted);font-size:14px}.vo-card__actions{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:8px}.vo-btn{border:0;border-radius:13px;padding:10px 14px;background:#22313f;color:white;cursor:pointer;text-decoration:none;text-align:center;box-shadow:0 8px 16px rgba(15,23,42,.15);transition:.15s transform,.15s box-shadow}.vo-btn:hover{transform:translateY(-1px);box-shadow:0 12px 20px rgba(15,23,42,.18)}.vo-btn--primary{background:var(--vo-accent)}.vo-btn--ghost{background:#fff;color:#22313f;border:1px solid var(--vo-border);box-shadow:none}.vo-btn--warm{background:var(--vo-accent-2)}
.vo-topbar{position:sticky;top:0;z-index:5;display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;margin:-6px 0 22px;padding:14px 0;background:linear-gradient(180deg,var(--vo-bg),rgba(242,239,231,.86))}.vo-topbar h1{font-size:34px;margin:2px 0}.vo-topbar__actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.vo-tasks{display:grid;gap:10px}.vo-block{padding:12px 14px;border:1px solid var(--vo-border);border-radius:16px;background:var(--vo-paper);box-shadow:0 10px 24px rgba(15,23,42,.06);break-inside:avoid;page-break-inside:avoid}.vo-block h2{margin:0 0 7px;font-size:20px}.vo-first5-pages{display:grid;gap:7px}.vo-first5-pages img,.vo-svg-task img{display:block;width:100%;height:auto}.vo-svg-task img{max-width:100%;margin:0 auto}.vo-answer-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin-top:8px}.vo-answer{display:grid;gap:3px}.vo-answer label{font-size:12px;color:var(--vo-muted);font-weight:700}.vo-answer input{width:100%;border:1px solid #c8c1b5;border-radius:9px;padding:7px 9px;background:white}.vo-answer.correct input{border-color:var(--vo-good);background:#ecfdf5}.vo-answer.wrong input{border-color:var(--vo-bad);background:#fef2f2}.vo-answer__truth{min-height:14px;font-size:12px;color:var(--vo-muted)}.vo-result{margin:0 0 14px;padding:16px;border-radius:18px;background:#ecfdf5;border:1px solid #a7f3d0;color:#064e3b;font-size:20px;font-weight:700}.vo-loading,.vo-error{padding:28px;border-radius:20px;background:white;border:1px solid var(--vo-border);color:var(--vo-muted)}
@media(max-width:980px){.vo-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.vo-topbar{grid-template-columns:1fr}.vo-topbar__actions{justify-content:flex-start}.vo-answer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.vo-app{padding:14px 10px 36px}.vo-hero{padding:20px}.vo-grid{grid-template-columns:1fr}.vo-answer-grid{grid-template-columns:1fr}}
@media print{body{background:white}.vo-app{max-width:none;padding:0}.vo-home,.vo-topbar,.vo-result,.vo-answer-grid,.vo-btn{display:none!important}.vo-solve{display:block!important}.vo-block{box-shadow:none;border:0;padding:0;margin:0 0 10mm;background:white}.vo-block h2{font-size:16pt;margin:0 0 5mm}.vo-first5-pages img,.vo-svg-task img{width:100%}.vo-tasks{gap:8mm}}