.sbm{--sbm-ink:#12243a;--sbm-blue:#235bd5;--sbm-light:#f5f7fb;--sbm-line:#dce4ef;color:var(--sbm-ink);background:#f7f9fd;min-height:100vh;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.sbm *{box-sizing:border-box}.sbm a{color:inherit;text-decoration:none}.sbm button,.sbm input{font:inherit}.sbm-wrap{width:min(1100px,100% - 36px);margin-inline:auto}.sbm-header{border-bottom:1px solid var(--sbm-line);background:#fff}.sbm-header-inner{justify-content:space-between;align-items:center;gap:20px;min-height:76px;display:flex}.sbm-brand{letter-spacing:-.03em;align-items:center;gap:11px;font-weight:850;line-height:1.08;display:flex}.sbm-mark{background:var(--sbm-ink);color:#fff;border-radius:10px;place-items:center;width:42px;height:42px;font-size:22px;font-weight:900;display:grid}.sbm-small-link{font-size:13px;font-weight:700;color:#4c5e73!important}.sbm-btn{background:var(--sbm-blue);cursor:pointer;text-align:center;border:0;border-radius:11px;justify-content:center;align-items:center;gap:9px;min-height:49px;padding:15px 20px;font-weight:800;transition:filter .2s,transform .2s;display:inline-flex;color:#fff!important}.sbm-btn:hover{filter:brightness(.92);transform:translateY(-1px)}.sbm-btn:disabled{opacity:.6;cursor:wait;transform:none}.sbm-btn.ghost{border:1px solid var(--sbm-line);background:#fff;color:var(--sbm-ink)!important}.sbm-tag{text-transform:uppercase;letter-spacing:.12em;color:var(--sbm-blue);font-size:11px;font-weight:850;display:inline-block}.sbm-opt-hero{background:radial-gradient(at 85% 0,#e3edff,#0000 52%),#f7f9fd;padding:78px 0 58px}.sbm-hero-grid{grid-template-columns:minmax(0,1.25fr) minmax(290px,.78fr);align-items:center;gap:62px;display:grid}.sbm-h1{letter-spacing:-.045em;margin:17px 0 22px;font-family:Georgia,serif;font-size:clamp(43px,5.2vw,70px);font-weight:500;line-height:1.06}.sbm-h1 em{color:var(--sbm-blue);font-weight:500}.sbm-lead{color:#43536b;max-width:660px;font-size:clamp(17px,1.9vw,21px);line-height:1.6}.sbm-highlights{gap:12px;margin:27px 0;padding:0;list-style:none;display:grid}.sbm-highlights li{align-items:flex-start;gap:11px;font-size:15px;font-weight:650;line-height:1.5;display:flex}.sbm-check{color:#24735b;font-weight:950}.sbm-trust{color:#64748b;max-width:540px;margin-top:23px;font-size:13px;line-height:1.7}.sbm-form-card{border:1px solid var(--sbm-line);background:#fff;border-radius:20px;padding:30px;box-shadow:0 24px 70px #1b39681a}.sbm-form-card h2{letter-spacing:-.045em;margin:9px 0 8px;font-size:27px;font-weight:850;line-height:1.14}.sbm-form-card p{color:#5b6c82;font-size:14px;line-height:1.65}.sbm-form-card label{margin:18px 0 8px;font-size:13px;font-weight:750;display:block}.sbm-input{width:100%;color:var(--sbm-ink);background:#fff;border:1px solid #bac9dc;border-radius:10px;min-height:49px;padding:14px 13px}.sbm-input:focus{outline-offset:1px;outline:2px solid #91b4ff}.sbm-form-card .sbm-btn{width:100%;margin-top:14px}.sbm-error{background:#fff1f1;border-radius:8px;padding:9px;color:#a12626!important;margin-top:10px!important}.sbm-underform{text-align:center;margin-top:13px;font-size:11px!important}.sbm-section{padding:62px 0}.sbm-section h2{letter-spacing:-.035em;max-width:760px;margin:10px 0 24px;font:500 clamp(30px,3.1vw,45px)/1.16 Georgia,serif}.sbm-section-intro{color:#52637c;max-width:690px;margin-bottom:26px;font-size:16px;line-height:1.7}.sbm-tiles{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}.sbm-tile{border:1px solid var(--sbm-line);background:#fff;border-radius:15px;padding:22px}.sbm-tile strong{margin:7px 0 9px;font-size:17px;display:block}.sbm-tile p{color:#5a6b80;margin:0;font-size:14px;line-height:1.7}.sbm-footer{border-top:1px solid var(--sbm-line);color:#748195;padding:24px 0;font-size:12px}.sbm-footer .sbm-wrap{flex-wrap:wrap;justify-content:space-between;gap:18px;display:flex}.sbm-member-header{z-index:10;border-bottom:1px solid var(--sbm-line);background:#fff;position:sticky;top:0}.sbm-member-grid{grid-template-columns:268px minmax(0,1fr);align-items:start;gap:28px;padding:28px 0 70px;display:grid}.sbm-sidebar{border:1px solid var(--sbm-line);background:#fff;border-radius:16px;padding:18px;position:sticky;top:96px}.sbm-sidebar-title{margin:2px 0 8px;font-size:17px;font-weight:850}.sbm-progress{background:#e9eef7;border-radius:20px;height:8px;margin:12px 0 7px;overflow:hidden}.sbm-progress span{background:var(--sbm-blue);height:100%;transition:width .2s;display:block}.sbm-muted{color:#63738a;font-size:13px;line-height:1.6}.sbm-side-nav{gap:4px;margin-top:21px;display:grid}.sbm-side-nav button{text-align:left;color:#455671;cursor:pointer;background:0 0;border:0;border-radius:9px;align-items:flex-start;gap:11px;width:100%;padding:12px 11px;font-size:13px;display:flex}.sbm-side-nav button:hover{background:#f2f6ff}.sbm-side-nav button.active{color:#214baa;background:#eaf1ff;font-weight:800}.sbm-number{color:var(--sbm-blue);min-width:18px;margin-top:2px;font-size:11px;font-weight:900}.sbm-lesson{border:1px solid var(--sbm-line);background:#fff;border-radius:18px;min-height:670px;padding:clamp(23px,4vw,46px)}.sbm-lesson h1{letter-spacing:-.045em;margin:13px 0 17px;font:500 clamp(35px,4.2vw,54px)/1.08 Georgia,serif}.sbm-lesson h2{letter-spacing:-.02em;margin:28px 0 12px;font-size:21px;font-weight:850}.sbm-lesson p{color:#455771;margin:13px 0;font-size:16px;line-height:1.85}.sbm-lesson ol,.sbm-lesson ul{color:#40516a;padding-left:24px;line-height:1.75}.sbm-lesson li{margin:12px 0}.sbm-example{border:1px solid var(--sbm-line);background:#f8fafc;border-radius:12px;margin:26px 0;padding:20px 23px}.sbm-example h2{margin:0 0 8px;font-size:19px}.sbm-example p{margin:8px 0;font-size:15px;line-height:1.75}.sbm-example .sbm-example-meta{letter-spacing:.09em;text-transform:uppercase;color:#65738b;font-size:11px;font-weight:800}.sbm-work{border-left:4px solid var(--sbm-blue);background:#f1f6ff;border-radius:9px;margin:26px 0;padding:18px 20px}.sbm-work h3{margin:0 0 9px;font-size:16px;font-weight:850}.sbm-work p{margin:0;font-size:14px}.sbm-lesson-nav{border-top:1px solid var(--sbm-line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-top:30px;padding-top:22px;display:flex}.sbm-lesson-nav label{cursor:pointer;align-items:center;gap:9px;font-size:14px;font-weight:750;display:flex}.sbm-lesson-nav input{width:18px;height:18px;accent-color:var(--sbm-blue)}.sbm-choice-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;margin:22px 0;display:grid}.sbm-choice{cursor:pointer;text-align:left;background:#fff;border:1px solid #bdcce1;border-radius:12px;padding:16px}.sbm-choice.selected{border-color:var(--sbm-blue);box-shadow:0 0 0 1px var(--sbm-blue);background:#eff5ff}.sbm-choice strong{margin-bottom:7px;font-size:15px;display:block}.sbm-choice span{color:#607086;font-size:12px;line-height:1.6}.sbm-note{color:#71541e;background:#fff9ed;border:1px solid #f4dfb1;border-radius:11px;margin-top:19px;padding:15px;font-size:14px;line-height:1.65}.sbm-deeper{flex-wrap:wrap;gap:12px;margin-top:15px;display:flex}.sbm-deeper a{text-underline-offset:4px;color:#245aca;font-size:14px;font-weight:750;text-decoration:underline}.sbm-invite{color:#fff;background:#10263e;border-radius:15px;margin-top:32px;padding:24px}.sbm-invite p{color:#d3dfed;font-size:14px}.sbm-invite .sbm-btn{background:#fff;color:#142b47!important}@media (width<=760px){.sbm-hero-grid{grid-template-columns:1fr;gap:24px}.sbm-opt-hero{padding:44px 0 38px}.sbm-tiles{grid-template-columns:1fr}.sbm-member-grid{grid-template-columns:1fr;gap:16px}.sbm-sidebar{position:static}.sbm-side-nav{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.sbm-header-inner{min-height:68px}.sbm-lesson{min-height:0}}@media (width<=400px){.sbm-side-nav,.sbm-choice-grid{grid-template-columns:1fr}}.sbm-practice{border-bottom:1px solid var(--sbm-line);margin:31px 0;padding:0 0 25px}.sbm-practice h2{font-size:22px;line-height:1.28}.sbm-practice p{margin:10px 0}.sbm-practice ol{margin:15px 0;padding-left:25px}.sbm-practice li{margin:8px 0;line-height:1.7}.sbm-prompt-box{background:#f1f6ff;border:1px solid #cedef8;border-radius:12px;margin-top:18px;padding:18px;overflow:hidden}.sbm-prompt-box strong{color:#244e91;letter-spacing:.01em;font-size:13px}.sbm-prompt-box pre{color:#243954;white-space:pre-wrap;overflow-wrap:anywhere;word-break:normal;margin:11px 0 0;padding:0;font-family:inherit;font-size:14px;line-height:1.65}