.lessons-page{padding:44px 0 72px}.lessons-page h1,.lesson-head h1{font-family:"Space Grotesk Variable","Space Grotesk",var(--sans);letter-spacing:-.025em;line-height:1.06;margin:0}.l-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--mut-2)}.l-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line-2)}.l-meta .topic{color:var(--gold);font-weight:600}.lessons-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,460px);align-items:end;gap:40px;padding-bottom:36px;border-bottom:1px solid var(--line)}.lessons-head h1{font-size:clamp(38px,5.4vw,64px);font-weight:600}.lessons-head .lead{margin:0;color:var(--mut);font-size:16.5px;line-height:1.65}.lessons-head .lead a{color:var(--gold);text-decoration:underline;text-decoration-color:#4b39ef52;text-underline-offset:3px}.lesson-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:36px 0 0}.lesson-card{display:flex;flex-direction:column;padding:28px 30px;border:1px solid var(--line);border-radius:18px;background:var(--bg-0);box-shadow:var(--shadow);color:var(--ink);transition:transform .24s cubic-bezier(.2,.7,.2,1),border-color .2s,box-shadow .24s}.lesson-card:hover{transform:translateY(-5px);border-color:var(--gold);box-shadow:0 20px 42px -26px #4b39ef80;color:var(--ink)}.lesson-card:focus-visible{outline:2px solid var(--gold);outline-offset:3px}.lesson-card h2,.lesson-card h3{font-family:"Space Grotesk Variable","Space Grotesk",var(--sans);margin:14px 0 0;font-weight:600;letter-spacing:-.018em;line-height:1.22;color:var(--ink);text-wrap:balance;transition:color .2s}.lesson-card h3{font-size:21px}.lesson-card:hover h2,.lesson-card:hover h3{color:var(--gold)}.lesson-card p{margin:12px 0 0;color:var(--mut);font-size:15.5px;line-height:1.62;flex:1}.lesson-card .card-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:22px;padding-top:16px;border-top:1px solid var(--line);font-size:13.5px;color:var(--mut-2)}.card-go{color:var(--gold);font-weight:600;white-space:nowrap}.card-go span{display:inline-block;transition:transform .2s}.lesson-card:hover .card-go span{transform:translate(4px)}.lesson-card.lead{grid-column:1 / -1;padding:34px 36px;border-color:var(--line-2);background:linear-gradient(150deg,#f1eefe,var(--bg-0) 62%)}.lesson-card.lead h2{font-size:clamp(24px,2.6vw,32px);margin-top:16px}.lesson-card.lead p{font-size:16.5px;max-width:68ch}.lessons-ask{margin:24px 0 0;padding:28px 30px;border:1px solid var(--line);border-radius:18px;background:var(--bg-1)}.lessons-ask h2{margin:0;font-size:19px;font-weight:650;color:var(--ink)}.lessons-ask p{margin:8px 0 0;color:var(--mut);font-size:15.5px;line-height:1.62;max-width:78ch}.lesson-grid{display:grid;grid-template-columns:minmax(0,780px) 232px;justify-content:center;gap:72px;align-items:start;padding:30px 0 0}.lesson-main{min-width:0}.lesson-grid.no-toc{grid-template-columns:minmax(0,780px)}.lesson-grid .toc{position:sticky;top:calc(var(--header-h) + 24px)}.lesson-head{padding-bottom:22px;margin-bottom:26px;border-bottom:1px solid var(--line)}.lesson-head h1{font-size:clamp(30px,3.6vw,44px);font-weight:600;margin:14px 0 0}.lesson-head .lead{margin:14px 0 0;color:var(--mut);font-size:17px;line-height:1.6;max-width:70ch}.lesson-stamp{margin:40px 0 0;padding-top:18px;border-top:1px solid var(--line);font-size:13.5px;color:var(--mut-2)}.lesson-help{margin:28px 0 0;padding:24px 28px;border:1px solid var(--line);border-radius:14px;background:var(--bg-1)}.lesson-help h2{margin:0;font-size:18px;font-weight:650;color:var(--ink)}.lesson-help p{margin:8px 0 16px;color:var(--mut);font-size:15.5px;line-height:1.62}.lesson-help .row{display:flex;flex-wrap:wrap;gap:10px}.lesson-next{margin:44px 0 0;padding-top:22px;border-top:1px solid var(--line)}.lesson-next h2{margin:0 0 12px;font-size:13px;letter-spacing:.07em;text-transform:uppercase;color:var(--mut-2);font-weight:650}.lesson-next ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}.lesson-next a{color:var(--ink-2);font-size:16px;font-weight:600}.lesson-next a:hover{color:var(--gold)}.lesson-next .side{color:var(--mut-2);font-size:13.5px;font-weight:400;margin-left:8px}.lesson-qa{margin:48px 0 0;padding-top:26px;border-top:1px solid var(--line);scroll-margin-top:calc(var(--header-h) + 16px)}.lesson-qa>h2{margin:0;font-size:22px;font-weight:680;letter-spacing:-.01em;color:var(--ink)}.qa-intro{margin:8px 0 0;max-width:62ch;color:var(--mut);font-size:15.5px;line-height:1.62}.qa-list{list-style:none;margin:24px 0 0;padding:0;display:grid;gap:4px}.qa-list,.qa-item,.qa-answer,.qa-body,.qa-form label{min-width:0}.qa-item>h3,.qa-who,.qa-body p{overflow-wrap:break-word}.qa-item{padding:22px 0;border-top:1px solid var(--line);scroll-margin-top:calc(var(--header-h) + 16px)}.qa-item:first-child{border-top:0;padding-top:4px}.qa-item>h3{margin:0;font-size:17.5px;font-weight:650;line-height:1.42;color:var(--ink)}.qa-item>h3 code{font-family:var(--mono);font-size:.88em;background:var(--bg-2);border-radius:5px;padding:1px 5px}.qa-who{margin:6px 0 0;font-size:13.5px;color:var(--mut-2)}.qa-who .who{color:var(--mut);font-weight:600}.qa-who .dot{margin:0 7px}.qa-body p{margin:10px 0 0;color:var(--mut);font-size:15.5px;line-height:1.66}.qa-body code{font-family:var(--mono);font-size:.9em;background:var(--bg-2);border-radius:5px;padding:1px 5px;color:var(--ink-2);word-break:break-word}.qa-body pre{margin:12px 0 0;padding:12px 14px;overflow-x:auto;background:var(--bg-1);border:1px solid var(--line);border-radius:10px}.qa-body pre code{background:none;padding:0;font-size:13.5px;line-height:1.6;white-space:pre}.qa-body a{color:var(--gold);text-decoration:underline;text-underline-offset:3px}.qa-answer{margin:14px 0 0;padding-left:16px;border-left:2px solid var(--gold-soft)}.qa-label{margin:0;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;font-weight:650;color:var(--gold)}.qa-label .dot{margin:0 7px;color:var(--mut-2)}.qa-label time{color:var(--mut-2);font-weight:500;letter-spacing:0;text-transform:none}.qa-answer .qa-body p:first-child{margin-top:6px}.qa-answer .qa-body p{color:var(--ink-2)}.qa-pending{margin:12px 0 0;font-size:14.5px;color:var(--mut-2)}.qa-ask{margin:30px 0 0;padding:24px 28px;border:1px solid var(--line);border-radius:14px;background:var(--bg-1)}.qa-ask h3{margin:0;font-size:18px;font-weight:650;color:var(--ink)}.qa-ask>p{margin:8px 0 0;max-width:60ch;color:var(--mut);font-size:15px;line-height:1.62}.qa-ask>p a{color:var(--gold);text-decoration:underline;text-underline-offset:3px}.qa-note{display:none;margin:14px 0 0;padding:12px 14px;border-radius:10px;font-size:14.5px;line-height:1.55;scroll-margin-top:calc(var(--header-h) + 16px)}.qa-note:target{display:block}.qa-note.ok{background:#16a34a14;border:1px solid rgba(22,163,74,.3);color:#14532d}.qa-note.err{background:#dc262612;border:1px solid rgba(220,38,38,.28);color:#7f1d1d}.qa-note a{color:inherit;text-decoration:underline;text-underline-offset:3px}.qa-form{margin:18px 0 0}.qa-trap{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}.qa-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.qa-form label{display:grid;gap:6px}.qa-form label>span{font-size:13px;font-weight:600;color:var(--ink-2)}.qa-form input,.qa-form textarea{width:100%;padding:10px 12px;font:inherit;font-size:15px;color:var(--ink);background:var(--bg-0);border:1px solid var(--line-2);border-radius:9px;transition:border-color .15s,box-shadow .15s}.qa-form textarea{resize:vertical;min-height:108px;line-height:1.6}.qa-form input::placeholder,.qa-form textarea::placeholder{color:var(--mut-2)}.qa-form input:focus,.qa-form textarea:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px var(--gold-soft)}.qa-q{margin:12px 0 0}.qa-send{margin:14px 0 0;display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px}.qa-hint{font-size:13px;color:var(--mut-2);max-width:44ch;line-height:1.5}@media(max-width:1080px){.lessons-head{grid-template-columns:minmax(0,1fr);align-items:start;gap:18px}.lesson-grid{grid-template-columns:minmax(0,1fr);gap:0}.lesson-grid .toc{display:none}}@media(max-width:780px){.lessons-page{padding:28px 0 56px}.lesson-cards{grid-template-columns:minmax(0,1fr);gap:16px}.lesson-card{padding:24px}.lesson-card.lead{padding:26px 24px}.lessons-ask,.lesson-help,.qa-ask{padding:20px 22px}.qa-row{grid-template-columns:minmax(0,1fr)}}
