.platform-hero{display:flex;justify-content:space-between;gap:32px;padding:clamp(32px,6vw,68px);border-radius:22px;background:linear-gradient(125deg,#072c67,#1160d4);color:#fff;box-shadow:0 18px 45px rgba(10,47,107,.2)}.platform-hero h1{max-width:620px;margin:8px 0 14px;color:#fff;font-size:clamp(2rem,5vw,3.4rem)}.platform-hero p{max-width:590px;margin:0;color:#dceaff;font-size:1.05rem;line-height:1.65}.catalog-search{display:flex;align-items:center;gap:10px;max-width:600px;margin-top:28px;padding:4px 15px;border-radius:11px;background:#fff;color:#537092}.catalog-search input{width:100%;padding:12px 0;border:0;outline:0;color:#17365d;font:inherit}.hero-stats{display:flex;gap:14px;flex-wrap:wrap;align-items:stretch}.hero-stat{display:grid;place-content:center;min-width:155px;height:155px;border:1px solid rgba(255,255,255,.25);border-radius:20px;background:rgba(255,255,255,.11);text-align:center}.hero-stat strong{font:800 3rem Montserrat}.hero-stat span{font-size:.77rem}.hero-stat-wide{min-width:220px;max-width:260px;height:155px;padding:0 22px;gap:4px}.hero-stat-wide small{display:block;margin-top:6px;color:#dceaff;font-size:.68rem;line-height:1.45}.catalog-section,.learning-section{margin-top:38px}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:18px}.section-heading h2,.learning-section h2{margin:4px 0;color:var(--primary);font-size:1.5rem}.section-heading>span{color:var(--muted);font-size:.85rem}.contest-grid,.learning-grid,.simulation-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.contest-card,.simulation-card{display:grid;gap:17px;padding:24px;background:#fff;border:1px solid #dbe6f2;border-radius:16px;box-shadow:0 8px 20px rgba(16,57,108,.05)}.contest-mark{display:grid;place-items:center;width:52px;height:52px;border-radius:13px;background:#e9f2ff;color:var(--secondary);font-weight:900}.card-label,.simulation-number{color:var(--secondary);font-size:.7rem;font-weight:800;letter-spacing:.09em}.contest-card h3,.simulation-card h2{margin:5px 0;color:var(--primary);font-size:1.1rem}.contest-card p,.simulation-card p{margin:0;color:var(--muted);font-size:.87rem}.contest-data,.simulation-card>div{display:flex;gap:15px;flex-wrap:wrap;color:#607794;font-size:.78rem}.contest-data b{color:var(--secondary)}.contest-card .button,.simulation-card .button{width:100%;margin-top:auto}.back-link{display:block;margin:0 0 18px;padding:0;border:0;background:none;color:var(--secondary);font-weight:700;cursor:pointer}.student-banner{display:flex;justify-content:space-between;gap:25px;padding:34px;background:#fff;border:1px solid var(--line);border-radius:18px}.student-banner h1{margin:6px 0;color:var(--primary)}.student-banner p{margin:0;color:var(--muted)}.student-progress{width:min(330px,100%);padding:14px 17px;border-radius:12px;background:#f4f8fd}.student-progress>div:first-child{display:flex;justify-content:space-between}.student-progress strong{color:var(--secondary)}.student-progress small{color:var(--muted);font-size:.72rem}.student-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:16px}.student-metrics span{padding:20px;background:#fff;border:1px solid var(--line);border-radius:13px;color:var(--muted);font-size:.8rem}.student-metrics strong{display:block;margin-bottom:4px;color:var(--primary);font-size:1.55rem}.learning-grid{grid-template-columns:repeat(3,1fr)}.learning-card{display:flex;align-items:center;gap:13px;padding:18px;border:1px solid #dbe6f2;border-radius:14px;background:#fff;color:inherit;text-align:left;cursor:pointer;transition:.18s}.learning-card:hover{border-color:#83b1ed;transform:translateY(-2px);box-shadow:0 8px 17px rgba(16,57,108,.08)}.learning-card i{display:grid;place-items:center;width:42px;height:42px;border-radius:10px;background:#f0f6ff;font-style:normal;font-size:1.3rem}.learning-card b,.learning-card small{display:block}.learning-card b{color:var(--primary);font-size:.87rem}.learning-card small{margin-top:3px;color:var(--muted);font-size:.72rem}.learning-card em{margin-left:auto;color:var(--secondary);font-style:normal}.simulation-grid{grid-template-columns:repeat(2,1fr)}.simulation-card{min-height:230px}.simulation-card h2{font-size:1.22rem}.simulation-card>div{margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}html[data-theme="dark"] .contest-card,html[data-theme="dark"] .simulation-card,html[data-theme="dark"] .student-banner,html[data-theme="dark"] .student-metrics span,html[data-theme="dark"] .learning-card{background:var(--white);border-color:var(--line)}html[data-theme="dark"] .student-progress{background:#20314a}@media(max-width:760px){.platform-hero,.student-banner{flex-direction:column}.hero-stat{width:150px;height:110px}.hero-stats{width:100%}.hero-stat-wide{width:100%;max-width:none;height:auto;padding:16px 20px}.contest-grid,.learning-grid,.simulation-grid{grid-template-columns:1fr}.student-metrics{grid-template-columns:1fr 1fr}}@media(max-width:440px){.student-metrics{grid-template-columns:1fr}.platform-hero{padding:28px 20px}}
.immediate-feedback{margin-top:1.25rem;padding:1rem 1.25rem;border-radius:12px;border:1px solid currentColor;background:#f5f8fc}.immediate-feedback h2{margin:0 0 .5rem}.immediate-feedback p{margin:.35rem 0}.immediate-feedback.is-correct{color:#176b3a;background:#eefaf3}.immediate-feedback.is-wrong{color:#9b2630;background:#fff2f3}