.intro[data-astro-cid-lcdefpme]{background:linear-gradient(180deg, var(--brand-soft), var(--bg));padding-block:44px 40px}@media (width>=900px){.intro[data-astro-cid-lcdefpme]{padding-block:64px 56px}}h1[data-astro-cid-lcdefpme]{font-size:var(--t-3xl);max-width:22ch}.lead[data-astro-cid-lcdefpme]{font-size:var(--t-lg);color:var(--ink-2);max-width:56ch;margin-top:12px}.problems[data-astro-cid-lcdefpme]{grid-template-columns:1fr;gap:12px;margin:28px 0 0;padding:0;list-style:none;display:grid}@media (width>=560px){.problems[data-astro-cid-lcdefpme]{grid-template-columns:1fr 1fr}}@media (width>=1000px){.problems[data-astro-cid-lcdefpme]{grid-template-columns:repeat(5,1fr)}}.problem[data-astro-cid-lcdefpme]{border-radius:var(--r-md);background:var(--tone-bg);min-height:112px;color:var(--ink);box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--tone-fg) 14%, transparent);justify-content:space-between;align-items:stretch;text-decoration:none;transition:transform .16s,box-shadow .16s;display:flex;position:relative;overflow:hidden}.problem[data-astro-cid-lcdefpme]:hover{box-shadow:inset 0 0 0 2px var(--tone-fg), var(--shadow);transform:translateY(-2px)}.p-text[data-astro-cid-lcdefpme]{z-index:1;align-content:space-between;gap:10px;min-width:0;padding:16px;display:grid}.p-text[data-astro-cid-lcdefpme] strong[data-astro-cid-lcdefpme]{font-size:var(--t-md);font-weight:800;line-height:1.25}.p-text[data-astro-cid-lcdefpme] small[data-astro-cid-lcdefpme]{font-size:var(--t-xs);color:var(--tone-fg);font-weight:700}.p-art[data-astro-cid-lcdefpme]{flex:none;width:42%;position:relative}.p-art[data-astro-cid-lcdefpme] svg{width:100%;height:100%;position:absolute;inset:0}@media (width>=1000px){.problem[data-astro-cid-lcdefpme]{flex-direction:column;min-height:220px}.p-art[data-astro-cid-lcdefpme]{order:-1;width:100%;height:110px}}.ages[data-astro-cid-lcdefpme]{flex-wrap:wrap;align-items:center;gap:10px 14px;margin-top:22px;display:flex}.ages-label[data-astro-cid-lcdefpme]{font-weight:700;font-size:var(--t-sm);color:var(--ink-2)}.ages[data-astro-cid-lcdefpme] ul[data-astro-cid-lcdefpme]{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.ages[data-astro-cid-lcdefpme] a[data-astro-cid-lcdefpme]{background:var(--bg);min-height:40px;box-shadow:inset 0 0 0 1.5px var(--line);font-weight:700;font-size:var(--t-sm);color:var(--ink);border-radius:999px;align-items:center;padding:0 16px;text-decoration:none;display:inline-flex}.ages[data-astro-cid-lcdefpme] a[data-astro-cid-lcdefpme]:hover{box-shadow:inset 0 0 0 1.5px var(--brand);color:var(--brand)}.feature-grid[data-astro-cid-lcdefpme]{gap:32px;display:grid}@media (width>=960px){.feature-grid[data-astro-cid-lcdefpme]{grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:48px}}.featured[data-astro-cid-lcdefpme]{gap:20px;display:grid;position:relative}.f-media[data-astro-cid-lcdefpme]{border-radius:var(--r-lg);display:block;overflow:hidden}.f-media[data-astro-cid-lcdefpme] .cover{border-radius:var(--r-lg)}.f-body[data-astro-cid-lcdefpme]{gap:12px;display:grid}.f-top[data-astro-cid-lcdefpme]{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.badge[data-astro-cid-lcdefpme]{background:var(--ink);color:var(--bg);font-size:var(--t-xs);border-radius:999px;padding:4px 10px;font-weight:700;display:inline-flex}.featured[data-astro-cid-lcdefpme] h2[data-astro-cid-lcdefpme]{font-size:var(--t-2xl);line-height:1.2}.featured[data-astro-cid-lcdefpme] h2[data-astro-cid-lcdefpme] a[data-astro-cid-lcdefpme]{color:var(--ink);text-decoration:none}.featured[data-astro-cid-lcdefpme] h2[data-astro-cid-lcdefpme] a[data-astro-cid-lcdefpme]:hover{text-underline-offset:4px;text-decoration:underline 2px}.featured[data-astro-cid-lcdefpme] p[data-astro-cid-lcdefpme]{color:var(--ink-2);font-size:var(--t-md);max-width:62ch}.f-actions[data-astro-cid-lcdefpme]{flex-wrap:wrap;align-items:center;gap:16px;margin-top:4px;display:flex}.popular[data-astro-cid-lcdefpme]{border-top:3px solid var(--ink);padding-top:16px}.popular[data-astro-cid-lcdefpme] h2[data-astro-cid-lcdefpme]{font-size:var(--t-lg);margin-bottom:4px}.popular[data-astro-cid-lcdefpme] ol[data-astro-cid-lcdefpme]{counter-reset:pop;margin:0 0 16px;padding:0;list-style:none}.popular[data-astro-cid-lcdefpme] li[data-astro-cid-lcdefpme]{counter-increment:pop;border-bottom:1px solid var(--line)}.popular[data-astro-cid-lcdefpme] li[data-astro-cid-lcdefpme] a[data-astro-cid-lcdefpme]{color:var(--ink);grid-template-columns:36px 1fr;gap:4px 8px;padding:16px 0;text-decoration:none;display:grid}.popular[data-astro-cid-lcdefpme] li[data-astro-cid-lcdefpme] a[data-astro-cid-lcdefpme]:before{content:counter(pop);color:var(--brand);grid-row:span 2;font-size:1.6rem;font-weight:800;line-height:1}.pop-title[data-astro-cid-lcdefpme]{font-weight:700;line-height:1.35}.popular[data-astro-cid-lcdefpme] li[data-astro-cid-lcdefpme] a[data-astro-cid-lcdefpme]:hover .pop-title[data-astro-cid-lcdefpme]{color:var(--brand)}.letter-wrap[data-astro-cid-lcdefpme]{padding-block:8px 64px}.letter[data-astro-cid-lcdefpme]{align-items:start;gap:40px;display:grid}@media (width>=960px){.letter[data-astro-cid-lcdefpme]{grid-template-columns:1.15fr 1fr;gap:64px}}.letter-paper[data-astro-cid-lcdefpme]{background:var(--surface);font-family:var(--f-read);background-image:repeating-linear-gradient(180deg, transparent 0 31px, color-mix(in srgb, var(--sky-strong) 12%, transparent) 31px 32px);border-radius:4px 4px 22px;justify-items:start;gap:12px;padding:28px 28px 24px;font-size:1.12rem;line-height:1.7;display:grid;position:relative}.letter-paper[data-astro-cid-lcdefpme]:before{content:"";background:color-mix(in srgb, var(--butter) 90%, transparent);border-radius:2px;width:90px;height:22px;position:absolute;top:-9px;right:36px;transform:rotate(4deg)}.letter-hi[data-astro-cid-lcdefpme]{color:var(--brand);font-size:2rem;line-height:1}.sign[data-astro-cid-lcdefpme]{color:var(--ink-2);margin-top:4px;font-size:1.6rem;line-height:1.1}.concepts[data-astro-cid-lcdefpme]{justify-items:start;gap:12px;display:grid}.concepts[data-astro-cid-lcdefpme] h2[data-astro-cid-lcdefpme]{font-size:var(--t-xl)}.concepts[data-astro-cid-lcdefpme]>p[data-astro-cid-lcdefpme]{color:var(--ink-2)}.concepts[data-astro-cid-lcdefpme] ul[data-astro-cid-lcdefpme]{flex-wrap:wrap;gap:8px;margin:4px 0 8px;padding:0;list-style:none;display:flex}.concepts[data-astro-cid-lcdefpme] li[data-astro-cid-lcdefpme] a[data-astro-cid-lcdefpme]{background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:var(--t-sm);border-radius:999px;padding:8px 14px;text-decoration:none;display:inline-flex}.concepts[data-astro-cid-lcdefpme] li[data-astro-cid-lcdefpme] a[data-astro-cid-lcdefpme]:hover,.tool-band[data-astro-cid-lcdefpme]{background:var(--brand);color:var(--on-brand)}.tool[data-astro-cid-lcdefpme]{align-items:center;gap:32px;padding-block:48px;display:grid}@media (width>=900px){.tool[data-astro-cid-lcdefpme]{grid-template-columns:1.1fr 1fr;gap:56px;padding-block:64px}}.tool-copy[data-astro-cid-lcdefpme]{justify-items:start;gap:14px;display:grid}.tool-copy[data-astro-cid-lcdefpme] h2[data-astro-cid-lcdefpme]{font-size:var(--t-2xl)}.tool-copy[data-astro-cid-lcdefpme] p[data-astro-cid-lcdefpme]{opacity:.9;max-width:52ch}.tool-copy[data-astro-cid-lcdefpme] small[data-astro-cid-lcdefpme]{opacity:.75;font-size:var(--t-xs)}.badge-on-brand[data-astro-cid-lcdefpme]{background:color-mix(in srgb, var(--on-brand) 18%, transparent);color:var(--on-brand)}.tool-mock[data-astro-cid-lcdefpme]{justify-content:center;display:flex}.mock-card[data-astro-cid-lcdefpme]{background:var(--bg);width:100%;max-width:400px;color:var(--ink);border-radius:var(--r-lg);padding:22px;transform:rotate(1.5deg);box-shadow:0 24px 48px -20px #00000073}.mock-progress[data-astro-cid-lcdefpme]{background:var(--surface-2);border-radius:99px;height:6px;margin-bottom:18px;overflow:hidden}.mock-progress[data-astro-cid-lcdefpme] span[data-astro-cid-lcdefpme]{background:var(--cta);height:100%;display:block}.mock-q[data-astro-cid-lcdefpme]{font-weight:800;font-size:var(--t-md);margin-bottom:14px}.mock-opt[data-astro-cid-lcdefpme]{box-shadow:inset 0 0 0 1.5px var(--line);font-weight:600;font-size:var(--t-sm);border-radius:12px;margin-bottom:8px;padding:12px 14px}.mock-opt[data-astro-cid-lcdefpme].on{box-shadow:inset 0 0 0 2px var(--brand);background:var(--brand-soft);color:var(--brand)}.mock-foot[data-astro-cid-lcdefpme]{font-size:var(--t-xs);color:var(--ink-3);justify-content:space-between;align-items:center;margin-top:14px;font-weight:600;display:flex}.mock-next[data-astro-cid-lcdefpme]{background:var(--cta);color:var(--on-cta);border-radius:99px;padding:8px 16px;font-weight:700}.grid3[data-astro-cid-lcdefpme]{grid-template-columns:1fr;gap:36px 28px;display:grid}@media (width>=640px){.grid3[data-astro-cid-lcdefpme]{grid-template-columns:1fr 1fr}}@media (width>=1000px){.grid3[data-astro-cid-lcdefpme]{grid-template-columns:repeat(3,1fr)}}.freebies-wrap[data-astro-cid-lcdefpme]{background:var(--surface)}.freebies[data-astro-cid-lcdefpme]{align-items:center;gap:40px;display:grid}@media (width>=900px){.freebies[data-astro-cid-lcdefpme]{grid-template-columns:1fr 1fr;gap:64px}}.fr-art[data-astro-cid-lcdefpme]{aspect-ratio:5/4;justify-self:center;width:100%;max-width:460px;position:relative}.sheet[data-astro-cid-lcdefpme]{width:42%;height:82%;box-shadow:var(--shadow);color:#132027;background:#fff;border-radius:6px;flex-direction:column;gap:10px;padding:12px;display:flex;position:absolute;top:6%;overflow:hidden}.sheet[data-astro-cid-lcdefpme] b[data-astro-cid-lcdefpme]{font-size:11px;line-height:1.25}.s1[data-astro-cid-lcdefpme]{left:2%;transform:rotate(-7deg)}.s3[data-astro-cid-lcdefpme]{z-index:1;top:2%;left:29%;transform:rotate(-1deg)}.s2[data-astro-cid-lcdefpme]{z-index:2;right:2%;transform:rotate(6deg)}.rows[data-astro-cid-lcdefpme]{gap:6px;display:grid}.rows[data-astro-cid-lcdefpme] i[data-astro-cid-lcdefpme]{background:#e1eed5;border-radius:3px;height:14px;display:block}.dots[data-astro-cid-lcdefpme]{grid-template-columns:repeat(3,1fr);gap:6px;display:grid}.dots[data-astro-cid-lcdefpme] em[data-astro-cid-lcdefpme]{aspect-ratio:1;border:2px solid #e9b730;border-radius:50%;display:block}.chain[data-astro-cid-lcdefpme]{gap:8px;display:grid}.chain[data-astro-cid-lcdefpme] u[data-astro-cid-lcdefpme]{border:2px solid #8bb8d6;border-radius:99px;height:22px;display:block}.fr-copy[data-astro-cid-lcdefpme]{justify-items:start;gap:14px;display:grid}.fr-copy[data-astro-cid-lcdefpme] h2[data-astro-cid-lcdefpme]{font-size:var(--t-2xl)}.fr-copy[data-astro-cid-lcdefpme] p[data-astro-cid-lcdefpme]{color:var(--ink-2);max-width:52ch}.ticks[data-astro-cid-lcdefpme]{font-weight:600;font-size:var(--t-sm);gap:8px;margin:0;padding:0;list-style:none;display:grid}.ticks[data-astro-cid-lcdefpme] li[data-astro-cid-lcdefpme]{align-items:center;gap:10px;display:flex}.ticks[data-astro-cid-lcdefpme] li[data-astro-cid-lcdefpme]:before{content:"";background:var(--brand-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5.5 10.5l3 3 6-7' fill='none' stroke='%230e5e50' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/100% no-repeat;border-radius:50%;flex:none;width:20px;height:20px}.trust[data-astro-cid-lcdefpme]{gap:28px;margin:0;padding:0;list-style:none;display:grid}@media (width>=820px){.trust[data-astro-cid-lcdefpme]{grid-template-columns:repeat(3,1fr);gap:40px}}.trust[data-astro-cid-lcdefpme] li[data-astro-cid-lcdefpme]{color:var(--brand);align-content:start;gap:10px;display:grid}.trust[data-astro-cid-lcdefpme] h3[data-astro-cid-lcdefpme]{font-size:var(--t-lg);color:var(--ink)}.trust[data-astro-cid-lcdefpme] p[data-astro-cid-lcdefpme]{color:var(--ink-2);font-size:var(--t-sm)}