.sv-exams{--exam-purple:#6824de;--exam-soft:#f0e8ff;--exam-tint:#faf8ff;--exam-border:#e4d6fd;--exam-dark:#4b2197;--exam-ink:#20213c;color:var(--exam-ink);max-width:1340px;margin:0 auto;font-size:16px;line-height:1.55}
.sv-exams button{font-family:inherit;cursor:pointer;font-size:14px}.sv-exams button:focus-visible,.sv-exams video:focus-visible{outline:3px solid #327df0;outline-offset:4px}.sv-exams button:disabled{opacity:.4;cursor:default}
.sv-exam-header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:0 0 26px}.sv-exam-eyebrow{color:var(--exam-purple);font-size:12px;font-weight:800;letter-spacing:.09em;margin:0 0 8px}.sv-exam-header h1{font-size:clamp(28px,3.2vw,40px);line-height:1.15;letter-spacing:-.045em;margin:0 0 10px}.sv-exam-header p:last-child{color:#66677e;margin:0}.sv-exam-count{background:var(--exam-soft);color:var(--exam-purple);padding:9px 15px;border-radius:30px;font-size:14px;font-weight:700;white-space:nowrap}
.sv-exam-years{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:26px}.sv-exam-years button{text-align:left;border:1px solid #e4dfed;border-radius:15px;background:white;color:#20213c;padding:16px 20px;min-height:84px}.sv-exam-years button[aria-pressed=true]{background:var(--exam-purple);color:#fff;border-color:var(--exam-purple);box-shadow:0 6px 18px rgb(32 33 60 / 8%)}.sv-exam-years span{display:block;font-size:18px;font-weight:800}.sv-exam-years small{display:block;font-size:14px;opacity:.8;margin-top:3px}
.sv-exam-layout{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(280px,1fr);gap:24px;align-items:start}.sv-exam-watch{min-width:0}.sv-exam-player{overflow:hidden;border-radius:17px;background:#20213c;aspect-ratio:16/9}.sv-exam-player video{display:block;width:100%;height:100%;object-fit:contain}.sv-exam-video-title{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:22px 0 16px}.sv-exam-video-title h2{font-size:26px;margin:0 0 3px;letter-spacing:-.03em}.sv-exam-video-title p:last-child{margin:0;color:#66677e}.sv-exam-number{font-size:38px;line-height:1;font-weight:800;letter-spacing:-.06em;color:var(--exam-purple)}
.sv-exam-context{padding:17px 19px;background:var(--exam-soft);border-left:3px solid var(--exam-purple);border-radius:0 12px 12px 0;font-size:14px}.sv-exam-context b{display:block;color:var(--exam-dark)}.sv-exam-context p{margin:5px 0 0;color:#5b536d}.sv-exam-sequence{display:flex;justify-content:space-between;gap:12px;margin:22px 0}.sv-exam-sequence button,.sv-exam-reload,.sv-exam-error button{padding:11px 15px;border:1px solid #ded5ec;border-radius:11px;background:white;color:var(--exam-purple);font-weight:700}.sv-exam-sequence button:last-child{background:var(--exam-purple);color:white;border-color:var(--exam-purple)}
.sv-exam-list{background:white;border:1px solid #e8e2f0;border-radius:17px;padding:20px;max-height:760px;overflow:auto}.sv-exam-list-head{display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid #eee9f4;padding-bottom:15px}.sv-exam-list h2{margin:0;font-size:18px}.sv-exam-list-head>span{font-size:14px;color:#727185}.sv-exam-group{margin-top:20px}.sv-exam-group h3{font-size:14px;color:#60536f;line-height:1.5;margin:0 0 8px;font-weight:800}.sv-exam-group button{display:flex;align-items:center;gap:11px;width:100%;text-align:left;border:1px solid transparent;border-radius:10px;padding:10px 9px;background:transparent;color:#20213c;min-height:48px}.sv-exam-group button:hover{background:var(--exam-tint)}.sv-exam-group button[aria-current=true]{background:var(--exam-soft);border-color:var(--exam-border);color:var(--exam-purple);font-weight:800}.sv-exam-play{display:grid;place-items:center;width:28px;height:28px;flex-shrink:0;border-radius:8px;background:#f5f2fa;font-size:12px;font-weight:800}.sv-exam-group button[aria-current=true] .sv-exam-play{background:var(--exam-purple);color:white}.sv-exam-group small{margin-left:auto;font-size:12px;color:#70657e;font-variant-numeric:tabular-nums}.sv-exam-error{padding:13px;background:#fff1ef;color:#9a3023;font-size:14px}.sv-exam-error[hidden]{display:none}
@media(max-width:1050px){.sv-exam-layout{grid-template-columns:minmax(0,1fr)}.sv-exam-list{max-height:none}.sv-exam-header{align-items:flex-start}.sv-exam-count{display:none}}
@media(max-width:520px){.sv-exam-years{gap:7px}.sv-exam-years button{padding:12px 10px;min-height:90px}.sv-exam-years span{font-size:16px}.sv-exam-years small{font-size:12px}.sv-exam-header h1{font-size:29px}.sv-exam-list{padding:15px}.sv-exam-sequence button{padding:10px;font-size:13px}.sv-exam-video-title h2{font-size:23px}}

.sv-exams[data-subject=physics]{--exam-purple:#176eb5;--exam-soft:#e7f3ff;--exam-tint:#f5faff;--exam-border:#bedcf4;--exam-dark:#145184}
.sv-exams[data-subject=biology]{--exam-purple:#18704e;--exam-soft:#e7f6ed;--exam-tint:#f5fbf7;--exam-border:#bde2cb;--exam-dark:#145038}
.sv-exams[data-subject=chemistry]{--exam-purple:#a24b13;--exam-soft:#fff0e2;--exam-tint:#fffbf6;--exam-border:#efceb2;--exam-dark:#73340e}
.sv-exam-subjects{display:flex;gap:14px;margin:0 0 26px;flex-wrap:wrap}.sv-exam-subjects button{display:flex;align-items:center;gap:14px;flex:1;min-width:240px;padding:18px 20px;text-align:left;background:#fff;border:1px solid #e4dfed;border-radius:16px;color:#20213c;min-height:94px}.sv-exam-subjects button[aria-pressed=true]{border:2px solid var(--exam-purple);padding:17px 19px;background:var(--exam-tint)}.sv-exam-subject-symbol{display:grid;place-items:center;flex-shrink:0;width:48px;height:48px;border-radius:14px;background:#f0e8ff;color:#6824de;font-size:26px;font-weight:800}.sv-exam-subjects [data-theme=physics] .sv-exam-subject-symbol{background:#e7f3ff;color:#176eb5}.sv-exam-subjects [data-theme=biology] .sv-exam-subject-symbol{background:#e7f6ed;color:#18704e}.sv-exam-subjects [data-theme=chemistry] .sv-exam-subject-symbol{background:#fff0e2;color:#a24b13}.sv-exam-subjects b{display:block;font-size:17px}.sv-exam-subjects small{display:block;font-size:13px;color:#6e6880;margin-top:3px}.sv-exam-subject-check{margin-left:auto;color:var(--exam-purple);font-size:20px}.sv-exam-years{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.sv-exam-years button{max-width:410px}.sv-exam-number{opacity:.45}
@media(max-width:520px){.sv-exam-subjects{gap:9px}.sv-exam-subjects button{min-width:100%;padding:14px}.sv-exam-subjects button[aria-pressed=true]{padding:13px}.sv-exam-subjects small{font-size:12px}}

@media(max-width:520px){.sv-exam-years{grid-template-columns:repeat(3,minmax(0,1fr))}.sv-exam-years button{overflow-wrap:normal}.sv-exam-years small{line-height:1.4}}
.sv-exam-years button:only-child{grid-column:1/-1}