/* ══ Camp Page — Light ══════════════════════════════════════════ */
.cp, .cp *, .cp *::before, .cp *::after { box-sizing: border-box; }
.cp {
  font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #2f3440;
  background: #f5f4f7;
}

/* ── HERO（保留深色對比，凸顯標題） ── */
.cp-hero {
  padding: clamp(60px,9vw,110px) 20px clamp(52px,8vw,96px);
  text-align: center; position: relative; overflow: hidden;
  background:
    radial-gradient(ellipse 70% 55% at 15% 25%, rgba(0,168,150,.22) 0%, transparent 58%),
    radial-gradient(ellipse 90% 70% at 85% -10%, rgba(0,100,130,.18) 0%, transparent 55%),
    linear-gradient(165deg, #040e18 0%, #061c2c 25%, #082c38 50%, #0a3d42 75%, #0f5e52 100%);
}
.cp-hero::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(rgba(0,168,150,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,168,150,.04) 1px, transparent 1px);
  background-size: 70px 70px;
}
.cp-hero-inner { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; }
.cp-hero-badge {
  display: inline-block; padding: 6px 18px; border-radius: 999px; margin-bottom: 22px;
  background: rgba(0,168,150,.18); border: 1px solid rgba(0,168,150,.45);
  color: #5eead4; font-size: .78rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase;
}
.cp-hero-title { font-size: clamp(1.9rem,5.5vw,3.2rem); font-weight: 900; color: #fff; letter-spacing: -.03em; line-height: 1.12; margin: 0 0 16px; }
.cp-hero-title span {
  background: linear-gradient(90deg,#a8f0e8 0%,#ffffff 28%,#00e8d4 52%,#00a896 72%,#a8f0e8 100%);
  background-size: 200% auto;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  animation: cpShine 7s linear infinite;
}
@keyframes cpShine { to { background-position: 200% center; } }
.cp-hero-desc { font-size: clamp(.95rem,2vw,1.1rem); color: rgba(200,235,250,.75); line-height: 1.75; margin: 0 0 28px; max-width: 64ch; margin-inline: auto; }
.cp-hero-cta { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* ── BUTTONS ── */
.cp-btn-primary {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 14px 34px; border-radius: 999px;
  background: #00a896; color: #fff !important;
  font-size: 1rem; font-weight: 800; text-decoration: none !important;
  box-shadow: 0 8px 28px rgba(0,168,150,.35);
  transition: transform .15s, box-shadow .15s, background .2s;
}
.cp-btn-primary:hover { background: #008b7d; transform: translateY(-2px); box-shadow: 0 12px 36px rgba(0,168,150,.48); color: #fff !important; }
.cp-btn-ghost {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 13px 28px; border-radius: 999px;
  background: rgba(255,255,255,.09); border: 1px solid rgba(255,255,255,.25);
  color: rgba(220,240,255,.9) !important; font-size: .92rem; font-weight: 700;
  text-decoration: none !important; transition: background .15s;
}
.cp-btn-ghost:hover { background: rgba(255,255,255,.16); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,255,255,.1); color: #fff !important; }

/* ── FACTS BAR ── */
.cp-facts { background: #ffffff; border-bottom: 1px solid rgba(0,168,150,.14); box-shadow: 0 2px 8px rgba(15,23,42,.06); }
.cp-facts-inner { max-width: 1040px; margin: 0 auto; padding: 0 20px; display: flex; flex-wrap: wrap; justify-content: center; }
.cp-fact { display: flex; align-items: center; gap: 10px; padding: 14px 20px; border-right: 1px solid rgba(0,0,0,.06); }
.cp-fact:last-child { border-right: none; }
.cp-fact-label { font-size: .66rem; font-weight: 700; color: #00a896; text-transform: uppercase; letter-spacing: .06em; }
.cp-fact-value { font-size: .86rem; font-weight: 700; color: #1e293b; }

/* ── BODY ── */
.cp-body { max-width: 900px; margin: 0 auto; padding: 52px 20px 80px; }
.cp-section { margin-bottom: 56px; }
.cp-section-label { font-size: .7rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; color: #00a896; margin: 0 0 6px; }
.cp-section-title { font-size: clamp(1.3rem,3vw,1.8rem); font-weight: 900; color: #0f172a; letter-spacing: -.025em; line-height: 1.2; margin: 0 0 20px; }

/* ── STATS ── */
.cp-stats-grid {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 12px;
  background: linear-gradient(135deg, #0f172a, #1e3a5f);
  border-radius: 18px; padding: 24px; margin-bottom: 20px;
}
.cp-stat { text-align: center; padding: 14px 8px; background: rgba(255,255,255,.07); border-radius: 12px; border: 1px solid rgba(255,255,255,.1); }
.cp-stat-num { font-size: 1.8rem; font-weight: 900; color: #fff; letter-spacing: -.03em; line-height: 1; margin-bottom: 4px; }
.cp-stat-num small { font-size: .56em; font-weight: 700; color: #00c8aa; }
.cp-stat-label { font-size: .72rem; color: rgba(255,255,255,.55); line-height: 1.35; }

/* ── ACHIEVEMENTS ── */
.cp-achievements { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.cp-ach { display: flex; align-items: flex-start; gap: 10px; padding: 12px 14px; border-radius: 10px; background: #ffffff; border: 1px solid rgba(0,0,0,.08); box-shadow: 0 1px 4px rgba(15,23,42,.05); }
.cp-ach-icon { font-size: 1.1rem; flex-shrink: 0; margin-top: 1px; }
.cp-ach p { margin: 0; font-size: .84rem; color: #374151; line-height: 1.55; }
.cp-ach strong { color: #0f172a; }

/* ── TEACHER（對齊講師頁 hero 設計）── */
.cp-teacher {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 60%, #0f4c75 100%);
  border-radius: 20px; overflow: hidden;
  display: grid; grid-template-columns: minmax(220px, 0.382fr) minmax(0, 0.618fr);
  gap: 0; align-items: stretch;
  box-shadow: 0 8px 32px rgba(15,23,42,.14);
}
.cp-teacher-photo-wrap { margin: 0; display: block; min-height: 300px; }
.cp-teacher-photo {
  width: 100%; height: 100%; min-height: 300px;
  object-fit: cover; object-position: center top;
  border-radius: 0; display: block;
  border-right: 1px solid rgba(148,189,224,.2);
  background: #0b223d;
  box-shadow: 0 18px 40px rgba(0,0,0,.36);
}
.cp-teacher-body {
  color: rgba(220,240,255,.9);
  display: flex; flex-direction: column; justify-content: center;
  gap: 14px; padding: 36px 32px;
}
.cp-teacher-name { margin: 0; font-size: clamp(1.7rem,3vw,2.4rem); font-weight: 900; color: #fff; letter-spacing: -.02em; line-height: 1.14; }
.cp-teacher-name span { margin-left: 10px; font-family: ui-monospace,Menlo,monospace; font-size: .5em; font-weight: 600; color: #9ec2e8; letter-spacing: .01em; white-space: nowrap; }
.cp-teacher-lead { margin: 0; font-size: 1rem; color: rgba(231,242,255,.9); line-height: 1.72; max-width: 56ch; }
.cp-teacher-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 2px; }
.cp-teacher-action {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 10px 22px; border-radius: 999px;
  border: 1px solid #00a896; background: #00a896;
  color: #fff !important; font-size: .9rem; font-weight: 800;
  text-decoration: none !important;
  box-shadow: 0 8px 18px rgba(0,168,150,.28);
  transition: background .15s, transform .15s;
  width: fit-content;
}
.cp-teacher-action:hover { background: #008b7c; border-color: #008b7c; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,168,150,.35); color: #fff !important; }
.cp-tbadge { padding: 3px 11px; border-radius: 999px; font-size: .75rem; font-weight: 700; }
.cp-tbadge--gold  { background: rgba(251,191,36,.18); color: #fbbf24; border: 1px solid rgba(251,191,36,.3); }
.cp-tbadge--blue  { background: rgba(96,165,250,.15); color: #93c5fd; border: 1px solid rgba(96,165,250,.25); }
.cp-tbadge--green { background: rgba(52,211,153,.15); color: #6ee7b7; border: 1px solid rgba(52,211,153,.25); }

/* ── FEATURES ── */
.cp-features { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.cp-feature { padding: 20px 22px; border-radius: 16px; border: 1px solid rgba(0,0,0,.08); background: #ffffff; box-shadow: 0 2px 10px rgba(15,23,42,.05); }
.cp-feature-num { font-size: 1.5rem; font-weight: 900; color: #d1faf5; letter-spacing: -.04em; line-height: 1; margin-bottom: 6px; }
.cp-feature h4 { margin: 0 0 5px; font-size: .9rem; font-weight: 800; color: #0f172a; }
.cp-feature p  { margin: 0; font-size: .82rem; color: #475569; line-height: 1.55; }

/* ── SYLLABUS ── */
.cp-syllabus { padding: 0; margin: 0; list-style: none; display: grid; gap: 6px; }
.cp-syllabus li { display: flex; align-items: center; gap: 12px; padding: 10px 14px; background: #ffffff; border-radius: 10px; border: 1px solid rgba(0,0,0,.07); }
.cp-syllabus-num { font-size: .7rem; font-weight: 800; color: #00a896; min-width: 20px; }
.cp-syllabus li span { font-size: .88rem; color: #1e293b; font-weight: 600; }

/* ── SCHEDULE ── */
.cp-schedule-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cp-week { border-radius: 16px; overflow: hidden; border: 1px solid rgba(0,0,0,.08); box-shadow: 0 3px 12px rgba(15,23,42,.06); }
.cp-week-header { padding: 13px 18px; font-size: .82rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; color: #fff; }
.cp-week:nth-child(1) .cp-week-header { background: linear-gradient(135deg, #0ea5e9, #14b8a6); }
.cp-week:nth-child(2) .cp-week-header { background: linear-gradient(135deg, #8b5cf6, #ec4899); }
.cp-day { display: flex; align-items: center; gap: 10px; padding: 8px 18px; border-bottom: 1px solid #f1f5f9; font-size: .83rem; background: #fff; }
.cp-day:last-child { border-bottom: none; }
.cp-day-date { font-weight: 700; color: #1e293b; min-width: 58px; font-variant-numeric: tabular-nums; }
.cp-day-name { color: #64748b; flex: 1; }
.cp-day--exam { background: rgba(251,191,36,.06); }
.cp-day--exam .cp-day-date { color: #92400e; }
.cp-badge { padding: 2px 8px; border-radius: 5px; font-size: .7rem; font-weight: 700; }
.cp-badge--mid   { background: #fef9c3; color: #854d0e; }
.cp-badge--final { background: #fee2e2; color: #991b1b; }
.cp-time-note { margin-top: 14px; padding: 14px 18px; background: #f0fdf9; border-radius: 12px; border: 1px solid rgba(0,168,150,.22); font-size: .84rem; color: #065f46; line-height: 1.65; }

/* ── PRICING ── */
.cp-pricing-table { width: 100%; border-collapse: collapse; border-radius: 14px; overflow: hidden; box-shadow: 0 4px 16px rgba(15,23,42,.07); border: 1px solid rgba(0,0,0,.08); }
.cp-pricing-table th { text-align: left; padding: 12px 18px; background: #0f172a; color: rgba(200,225,248,.85); font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.cp-pricing-table td { padding: 13px 18px; border-bottom: 1px solid #f1f5f9; font-size: .88rem; vertical-align: middle; color: #334155; background: #fff; }
.cp-pricing-table tr:last-child td { border-bottom: none; }
.cp-pricing-table tr:hover td { background: #f8fbfb; }
.cp-tier-badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .74rem; font-weight: 700; white-space: nowrap; }
.cp-tier-vip    { background: #fef9c3; color: #854d0e; border: 1px solid #fde68a; }
.cp-tier-early  { background: #dbeafe; color: #1d4ed8; border: 1px solid #bfdbfe; }
.cp-tier-normal { background: #f1f5f9; color: #64748b; border: 1px solid #e2e8f0; }
.cp-price-big { font-size: 1.2rem; font-weight: 900; color: #0f172a; letter-spacing: -.02em; }
.cp-price-big small { font-size: .7em; font-weight: 600; color: #94a3b8; }

/* ── NOTES ── */
.cp-notes { background: #ffffff; border-radius: 16px; padding: 24px 28px; border: 1px solid rgba(0,0,0,.08); box-shadow: 0 2px 10px rgba(15,23,42,.05); }
.cp-notes h4 { margin: 0 0 12px; font-size: .82rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; color: #64748b; }
.cp-notes ul { margin: 0; padding: 0 0 0 18px; }
.cp-notes ul li { font-size: .84rem; color: #374151; line-height: 1.6; margin-bottom: 4px; }

/* ── REFUND ── */
.cp-refund { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.cp-refund-item { padding: 16px 18px; border-radius: 14px; text-align: center; }
.cp-refund-item:nth-child(1) { background: #f0fdf4; border: 1px solid #bbf7d0; }
.cp-refund-item:nth-child(2) { background: #fff7ed; border: 1px solid #fed7aa; }
.cp-refund-item:nth-child(3) { background: #fef2f2; border: 1px solid #fecaca; }
.cp-refund-pct { font-size: 1.6rem; font-weight: 900; letter-spacing: -.03em; margin: 0 0 4px; }
.cp-refund-item:nth-child(1) .cp-refund-pct { color: #15803d; }
.cp-refund-item:nth-child(2) .cp-refund-pct { color: #c2410c; }
.cp-refund-item:nth-child(3) .cp-refund-pct { color: #dc2626; }
.cp-refund-item p { margin: 0; font-size: .78rem; color: #64748b; line-height: 1.45; }

/* ── CTA ── */
.cp-cta {
  background: linear-gradient(135deg, #e8faf8 0%, #f0fdf9 100%);
  border: 1px solid rgba(0,168,150,.22); border-radius: 24px;
  padding: 44px 40px; text-align: center; margin-top: 56px; position: relative; overflow: hidden;
}
.cp-cta::before { content: ''; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(0,168,150,.08) 0%, transparent 70%); }
.cp-cta h2 { margin: 0 0 10px; font-size: clamp(1.2rem,3vw,1.7rem); font-weight: 900; color: #0f172a; letter-spacing: -.02em; position: relative; }
.cp-cta p  { margin: 0 0 22px; font-size: .95rem; color: #475569; line-height: 1.65; position: relative; }
.cp-cta-btns { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; position: relative; }

/* ── Prereq warning ── */
.cp-prereq-warn { padding: 18px 22px; background: #fff7ed; border: 1px solid #fed7aa; border-radius: 14px; }
.cp-prereq-title { margin: 0 0 8px; font-size: .88rem; font-weight: 800; color: #9a3412; }
.cp-prereq-desc { margin: 0; font-size: .85rem; color: #7c2d12; line-height: 1.65; }

/* ── Location box ── */
.cp-location-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cp-location-box { padding: 22px 26px; border-radius: 16px; }
.cp-location-box--primary { background: #f0f9ff; border: 1px solid #bae6fd; }
.cp-location-box--online { background: #faf5ff; border: 1px solid #e9d5ff; }
.cp-location-label { font-size: .7rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 6px; }
.cp-location-box--primary .cp-location-label { color: #0ea5e9; }
.cp-location-box--online .cp-location-label { color: #8b5cf6; }
.cp-location-name { font-size: 1rem; font-weight: 800; color: #0f172a; margin-bottom: 6px; }
.cp-location-desc { font-size: .84rem; color: #64748b; line-height: 1.5; }
.cp-location-action {
  display: inline-flex; align-items: center; margin-top: 12px;
  padding: 8px 18px; border-radius: 999px;
  background: #06c755; color: #fff !important; font-size: .82rem; font-weight: 700;
  text-decoration: none !important; transition: background .15s, transform .15s;
}
.cp-location-action:hover { background: #05b34c; transform: translateY(-1px); color: #fff !important; }

/* ── Quote block ── */
.cp-quote { padding: 32px 36px; border-radius: 18px; background: linear-gradient(135deg, #e8faf8 0%, #f0fdf9 100%); border: 1px solid rgba(0,168,150,.2); text-align: center; }
.cp-quote p { margin: 0; font-size: 1.05rem; font-weight: 500; color: #374151; line-height: 1.8; letter-spacing: .01em; }
.cp-quote-hl { font-size: 1.2rem; font-weight: 900; color: #0f172a; }
.cp-quote-hl em { font-style: normal; color: #008b7d; }

/* ── Body text ── */
.cp-body p, .cp-body li { color: #374151; }
.cp-body .note-sm { font-size: .78rem; color: #94a3b8; }

/* ── Teacher card 深色背景，強制文字亮色 ── */
.cp-teacher .cp-teacher-lead { color: rgba(231,242,255,.92) !important; }
.cp-teacher .cp-teacher-name { color: #fff !important; }

/* ── MATH PREREQUISITES ── */
.cp-math-intro { margin-bottom: 28px; }
.cp-math-intro > p { font-size: .9rem; color: #374151; line-height: 1.7; margin: 0 0 16px; }
.cp-math-key {
  background: #f0fdf9; border: 1px solid rgba(0,168,150,.2); border-radius: 14px;
  padding: 20px 24px;
}
.cp-math-key > p { font-size: .88rem; color: #374151; line-height: 1.65; margin: 0 0 10px; }
.cp-math-key > p:last-child { margin-bottom: 0; }
.cp-math-key blockquote {
  margin: 0 0 12px; padding: 12px 18px; border-left: 3px solid #00a896;
  background: rgba(255,255,255,.7); border-radius: 0 8px 8px 0;
  font-size: .92rem; color: #0f172a; line-height: 1.6; font-weight: 500;
}

/* Collapse toggle */
.cp-math-collapse { margin-top: 24px; }
.cp-math-collapse-btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 16px 24px; border-radius: 14px;
  background: linear-gradient(135deg, #f0fdf9 0%, #e8faf8 100%);
  border: 1px solid rgba(0,168,150,.25);
  font-size: .95rem; font-weight: 800; color: #0f172a;
  cursor: pointer; list-style: none;
  transition: all .2s;
}
.cp-math-collapse-btn::-webkit-details-marker { display: none; }
.cp-math-collapse-btn::after {
  content: '▼'; font-size: .7rem; color: #00a896; transition: transform .2s;
}
.cp-math-collapse[open] .cp-math-collapse-btn::after { transform: rotate(180deg); }
.cp-math-collapse-btn:hover {
  background: linear-gradient(135deg, #e0f8f4 0%, #d5f5f0 100%);
  border-color: #00a896;
}
.cp-math-collapse-body { padding-top: 8px; }

.cp-math-h3 {
  font-size: 1.05rem; font-weight: 800; color: #0f172a;
  margin: 32px 0 14px; letter-spacing: -.01em;
}

.cp-math-level-table td { font-size: .86rem; line-height: 1.55; }

/* Traits grid */
.cp-math-traits { background: #fff; border: 1px solid rgba(0,0,0,.08); border-radius: 16px; padding: 24px 26px; box-shadow: 0 2px 10px rgba(15,23,42,.05); }
.cp-math-traits > p { font-size: .88rem; color: #374151; line-height: 1.65; margin: 0 0 16px; }
.cp-traits-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.cp-trait {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 14px 16px; background: #f8fafb; border-radius: 12px; border: 1px solid #f0f0f0;
}
.cp-trait-icon { font-size: 1.3rem; flex-shrink: 0; margin-top: 2px; }
.cp-trait strong { display: block; font-size: .88rem; color: #0f172a; margin-bottom: 3px; }
.cp-trait p { margin: 0; font-size: .8rem; color: #64748b; line-height: 1.45; }
.cp-math-tip {
  margin: 0; padding: 12px 16px; background: #fffbeb; border: 1px solid #fde68a;
  border-radius: 10px; font-size: .82rem; color: #92400e; line-height: 1.55;
}

/* Math knowledge tables */
.cp-math-tables { display: grid; gap: 16px; }
.cp-math-group {
  background: #fff; border: 1px solid rgba(0,0,0,.08); border-radius: 16px;
  overflow: hidden; box-shadow: 0 2px 10px rgba(15,23,42,.05);
}
.cp-math-group-head {
  padding: 12px 20px; font-size: .82rem; font-weight: 800; letter-spacing: .04em;
  color: #fff; background: linear-gradient(135deg, #0f172a, #1e3a5f);
}
.cp-math-group table { width: 100%; border-collapse: collapse; }
.cp-math-group th {
  text-align: left; padding: 10px 18px; font-size: .72rem; font-weight: 700;
  color: #64748b; letter-spacing: .04em; text-transform: uppercase;
  background: #f8fafc; border-bottom: 1px solid #e5e7eb;
}
.cp-math-group td {
  padding: 10px 18px; font-size: .84rem; color: #374151; line-height: 1.5;
  border-bottom: 1px solid #f1f5f9; vertical-align: top;
}
.cp-math-group tr:last-child td { border-bottom: none; }
.cp-math-group td:first-child { font-weight: 700; color: #0f172a; white-space: nowrap; }
.cp-math-note {
  margin: 0; padding: 12px 20px; font-size: .82rem; color: #065f46;
  background: #f0fdf9; border-top: 1px solid rgba(0,168,150,.15); line-height: 1.55;
}

/* Checklist */
.cp-checklist-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
}
.cp-checklist-group {
  background: #fff; border: 1px solid rgba(0,0,0,.08); border-radius: 14px;
  padding: 18px 20px; box-shadow: 0 2px 8px rgba(15,23,42,.04);
}
.cp-checklist-label {
  font-size: .74rem; font-weight: 800; color: #00a896; letter-spacing: .06em;
  text-transform: uppercase; margin-bottom: 10px;
}
.cp-check {
  display: flex; align-items: center; gap: 10px; padding: 6px 0;
  font-size: .86rem; color: #374151; cursor: pointer; user-select: none;
}
.cp-check input[type="checkbox"] {
  width: 18px; height: 18px; accent-color: #00a896; flex-shrink: 0; cursor: pointer;
}
.cp-check span { line-height: 1.4; }

/* Math FAQ */
.cp-math-faq { display: grid; gap: 8px; }
.cp-math-faq-item {
  background: #fff; border: 1px solid rgba(0,0,0,.08); border-radius: 12px;
  overflow: hidden; box-shadow: 0 1px 4px rgba(15,23,42,.04);
}
.cp-math-faq-item summary {
  padding: 14px 20px; font-size: .9rem; font-weight: 700; color: #0f172a;
  cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between;
  transition: background .15s;
}
.cp-math-faq-item summary:hover { background: #f8fafb; }
.cp-math-faq-item summary::-webkit-details-marker { display: none; }
.cp-math-faq-item summary::after {
  content: '▼'; font-size: .65rem; color: #94a3b8; transition: transform .2s; flex-shrink: 0; margin-left: 12px;
}
.cp-math-faq-item[open] summary::after { transform: rotate(180deg); }
.cp-math-faq-a {
  padding: 0 20px 16px; font-size: .86rem; color: #475569; line-height: 1.65;
}

@media (max-width: 640px) {
  .cp-stats-grid, .cp-achievements, .cp-features, .cp-schedule-wrap, .cp-refund { grid-template-columns: 1fr; }
  .cp-teacher { grid-template-columns: 1fr; }
  .cp-teacher-photo { min-height: 260px; border-right: none; border-bottom: 1px solid rgba(148,189,224,.2); }
  .cp-teacher-body { padding: 24px 20px; }
  .cp-facts-inner { flex-direction: column; }
  .cp-fact { border-right: none; border-bottom: 1px solid rgba(0,0,0,.06); }
  .cp-cta { padding: 30px 22px; }
  .cp-traits-grid { grid-template-columns: 1fr; }
  .cp-checklist-wrap { grid-template-columns: 1fr; }
  .cp-location-grid { grid-template-columns: 1fr; }
  .cp-math-group td:first-child { white-space: normal; }
  .cp-math-group table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
}