:root{
  --mksm-primary:#8222ee;
  --mksm-primary-dark:#5b17b5;
  --mksm-primary-soft:#f7f0ff;
  --mksm-primary-softer:#fbf8ff;
  --mksm-border:#e6d6ff;
  --mksm-border-strong:#d3b7ff;
  --mksm-text:#171421;
  --mksm-muted:#625d71;
  --mksm-card:#ffffff;
  --mksm-green:#0f9f6e;
  --mksm-red:#dc2626;
  --mksm-amber:#b45309;
  --mksm-shadow:0 14px 40px rgba(87,34,150,.08);
}

.mksm-lesson,.mksm-dashboard{max-width:1120px;margin:0 auto;padding:24px 18px 70px;color:var(--mksm-text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55;box-sizing:border-box;overflow-x:hidden}
.mksm-lesson *,.mksm-dashboard *{box-sizing:border-box}
.mksm-hero{border-radius:24px;background:linear-gradient(135deg,#9c2cff 0%,#8222ee 48%,#3e126d 100%);color:#fff;padding:34px 38px;box-shadow:var(--mksm-shadow);position:relative;overflow:hidden;margin:0 0 18px}
.mksm-hero:after{content:"";position:absolute;right:-72px;top:-80px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.18)}
.mksm-kicker{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.12);border-radius:999px;padding:8px 14px;text-transform:uppercase;letter-spacing:.08em;font-size:12px;font-weight:850;margin-bottom:16px;position:relative;z-index:1}
.mksm-hero h1{font-size:clamp(30px,4.5vw,52px);line-height:1.02;margin:0 0 10px;font-weight:900;color:#fff;letter-spacing:-.04em;position:relative;z-index:1}
.mksm-hero p{font-size:clamp(16px,2.3vw,21px);max-width:820px;margin:0;color:rgba(255,255,255,.92);position:relative;z-index:1}
.mksm-chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;position:relative;z-index:1}.mksm-chip{display:inline-flex;align-items:center;border:1px solid rgba(255,255,255,.32);background:rgba(255,255,255,.14);border-radius:999px;padding:8px 12px;font-size:13px;font-weight:800;color:#fff}.mksm-chip:before{content:"";width:8px;height:8px;border-radius:50%;background:#fff;margin-right:8px;opacity:.85}

.mksm-card,.mksm-practice{background:linear-gradient(180deg,#fff 0%,#fff 70%,#fcf9ff 100%);border:1px solid var(--mksm-border);border-radius:20px;padding:26px;margin:16px 0;box-shadow:0 8px 26px rgba(70,38,120,.045)}
.mksm-section-title{font-size:clamp(24px,3vw,34px);line-height:1.15;margin:0 0 16px;color:var(--mksm-primary);font-weight:900;letter-spacing:-.03em;display:flex;align-items:center;gap:10px}.mksm-section-title:before{content:"";width:7px;height:32px;border-radius:999px;background:var(--mksm-primary);box-shadow:0 0 0 7px #f1e4ff}
.mksm-card h3,.mksm-practice h3{font-size:20px;margin:18px 0 8px;color:#211b2d}.mksm-card p,.mksm-practice p{font-size:16.5px;margin:10px 0;color:var(--mksm-text)}
.mksm-checklist{list-style:none;padding:0;margin:10px 0;display:grid;gap:10px}.mksm-checklist li{position:relative;padding-left:34px;font-size:16px}.mksm-checklist li:before{content:"✓";position:absolute;left:0;top:0;width:23px;height:23px;border-radius:50%;display:grid;place-items:center;background:var(--mksm-primary);color:#fff;font-weight:900;font-size:13px}
.mksm-grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.mksm-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.mksm-mini{border:1px solid var(--mksm-border);background:var(--mksm-primary-softer);border-radius:16px;padding:18px}.mksm-mini strong{display:block;color:var(--mksm-primary-dark);font-size:16px;margin-bottom:6px}.mksm-mini p{font-size:15px;color:var(--mksm-muted);margin:0}
.mksm-tip,.mksm-warning,.mksm-rule{border:1px solid var(--mksm-border);border-left:6px solid var(--mksm-primary);background:#fff;border-radius:16px;padding:16px 18px;margin:16px 0;color:var(--mksm-text)}.mksm-tip strong,.mksm-warning strong,.mksm-rule strong{color:#181421}.mksm-warning{border-left-color:#f59e0b;background:#fffaf2}.mksm-rule{border-left-color:#16a34a;background:#f3fff8}

.mksm-formula-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.mksm-formula{border:1px solid var(--mksm-border);background:#fff;border-radius:16px;padding:16px}.mksm-formula strong{display:block;color:var(--mksm-primary);font-size:15px;margin-bottom:8px}.mksm-eq,.mksm-inline-eq{font-family:Georgia,"Times New Roman",serif;color:#15121f}.mksm-eq{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:20px;background:#fbf8ff;border:1px solid #eadcff;border-radius:12px;padding:10px 12px;margin:8px 0}.mksm-inline-eq{display:inline-flex;align-items:center;gap:4px;background:#fbf8ff;border:1px solid #eadcff;border-radius:7px;padding:1px 6px;font-size:1.02em;vertical-align:middle}.mksm-frac{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;line-height:1;text-align:center;vertical-align:middle;min-width:1.5em;margin:0 .15em;font-family:Georgia,"Times New Roman",serif}.mksm-frac>span:first-child{display:block;border-bottom:1.7px solid currentColor;padding:0 .18em .12em}.mksm-frac>span:last-child{display:block;padding:.12em .18em 0}.mksm-sup{font-size:.68em;vertical-align:super;margin-left:1px}.mksm-sub{font-size:.68em;vertical-align:sub}.mksm-sqrt{display:inline-flex;align-items:flex-start;gap:2px;font-family:Georgia,"Times New Roman",serif}.mksm-sqrt .radicand{border-top:1.7px solid currentColor;padding:.05em .15em 0 .15em}.mksm-matrix{display:inline-grid;grid-template-columns:1fr 1fr;gap:4px 8px;border-left:2px solid currentColor;border-right:2px solid currentColor;padding:3px 8px;margin:0 4px}.mksm-pill{display:inline-flex;align-items:center;border-radius:999px;padding:4px 10px;background:#f4ecff;color:var(--mksm-primary);font-weight:850;font-size:13px}

.mksm-svg-wrap{border:1px solid var(--mksm-border);border-radius:18px;background:#fff;padding:14px;margin:16px auto;max-width:760px;overflow-x:auto}.mksm-svg{display:block;max-width:100%;height:auto;margin:0 auto}.mksm-grid-line{stroke:#ece5f8;stroke-width:1}.mksm-axis{stroke:#8b91a4;stroke-width:1.6}.mksm-plot-line{stroke:var(--mksm-primary);stroke-width:3.2;stroke-linecap:round}.mksm-plot-line-thin{stroke:var(--mksm-primary);stroke-width:2.2;stroke-linecap:round}.mksm-plot-point{fill:#11a97d;stroke:white;stroke-width:2}.mksm-svg text{font-family:Inter,ui-sans-serif,system-ui;font-weight:700;fill:#261d36}.mksm-svg .label-small{font-size:13px;fill:#625d71}.mksm-svg .label-purple{fill:var(--mksm-primary);font-weight:900}.mksm-graph-note{font-size:14px;color:var(--mksm-muted);text-align:center;margin-top:8px}

.mksm-example{border:1px solid var(--mksm-border);border-radius:16px;background:#fff;padding:18px;margin:14px 0}.mksm-example h3{margin-top:0;color:#1e1930}.mksm-example ol{padding-left:22px}.mksm-example li{margin:8px 0}.mksm-q{border:1px solid var(--mksm-border);background:#fff;border-radius:18px;padding:18px;margin:14px 0}.mksm-q-head{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:12px;font-size:13px;font-weight:900;color:var(--mksm-primary);text-transform:uppercase;letter-spacing:.04em}.mksm-choices{display:grid;gap:10px;margin-top:12px}.mksm-choice{display:grid;grid-template-columns:38px 1fr;align-items:center;gap:12px;border:1px solid var(--mksm-border);border-radius:14px;background:#fff;padding:11px 13px}.mksm-choice>span:first-child{width:32px;height:32px;border-radius:10px;background:var(--mksm-primary);color:#fff;display:grid;place-items:center;font-weight:900}.mksm-choice p{margin:0;font-size:16px;color:#1f1b2b}.mksm-answer-key{border:1px solid #b7f0cc;background:#f7fff9;border-radius:18px;padding:18px;margin:20px 0}.mksm-answer-key h2{margin:0 0 12px;color:#0f7f53;font-size:24px}.mksm-answer-key details{background:#fff;border:1px solid #c5f4d5;border-radius:12px;padding:11px 13px;margin:9px 0}.mksm-answer-key summary{cursor:pointer;font-weight:850;color:#111827}.mksm-answer-key .ans{color:#0f7f53}.mksm-step-table{width:100%;border-collapse:collapse;margin:14px 0;overflow:hidden;border-radius:14px;border:1px solid var(--mksm-border);font-size:15px}.mksm-step-table th,.mksm-step-table td{border:1px solid var(--mksm-border);padding:10px 12px;text-align:left}.mksm-step-table th{background:#f5edff;color:#5416a4}

@media(max-width:760px){.mksm-lesson,.mksm-dashboard{padding:14px 10px 50px}.mksm-hero{padding:24px 20px;border-radius:18px}.mksm-card,.mksm-practice{padding:18px;border-radius:16px}.mksm-grid-2,.mksm-grid-3,.mksm-formula-grid{grid-template-columns:1fr}.mksm-section-title{font-size:25px}.mksm-card p,.mksm-practice p{font-size:15.5px}.mksm-eq{font-size:18px;overflow-x:auto;white-space:normal}.mksm-choice{grid-template-columns:34px 1fr;padding:10px}.mksm-choice>span:first-child{width:30px;height:30px}.mksm-svg-wrap{padding:8px}.mksm-q-head{align-items:flex-start;flex-direction:column}}

/* v1.9 long question bank support */
.mksm-long-practice{background:#fff;}.mksm-long-practice .mksm-q{box-shadow:none}.mksm-svg-compact{max-height:360px}.mksm-hero-light{background:linear-gradient(135deg,#f8f1ff,#ffffff 54%,#f4fff9);color:#211735;border:1px solid var(--mksm-border)}.mksm-hero-light h1{color:#5416a4}.mksm-hero-light p{color:#4c465f}.mksm-source-note{font-size:13px;color:#6b647c}.mksm-lesson .mksm-choice p{overflow-wrap:anywhere}.mksm-lesson .mksm-inline-eq{white-space:normal}.mksm-long-practice .mksm-q{break-inside:avoid}