:root{
  --ink:#182230;--muted:#667085;--bg:#f5f7fb;--card:#fff;--line:#e7ebf1;
  --purple:#6d5ce7;--purple-soft:#eeeaff;--green:#2ba36a;--green-soft:#e9f8f0;
  --orange:#f2a33a;--orange-soft:#fff4df;--blue:#3786e8;--blue-soft:#eaf3ff;
  --shadow:0 14px 40px rgba(32,45,76,.08);--radius:24px;
}
*{box-sizing:border-box} body{margin:0;font-family:Inter,ui-rounded,"SF Pro Rounded","Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--ink)}
button,textarea{font:inherit} button{cursor:pointer}.app-shell{min-height:100vh}.topbar{height:78px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(28px,calc((100vw - 1180px)/2));position:sticky;top:0;z-index:10}.brand{display:flex;gap:12px;align-items:center}.brand-mark{width:42px;height:42px;border-radius:14px;background:var(--purple);color:#fff;display:grid;place-items:center;font-size:24px;font-weight:800;box-shadow:0 8px 20px rgba(109,92,231,.25)}.brand-title{font-weight:850;font-size:18px}.brand-subtitle{font-size:12px;color:var(--muted);margin-top:2px}.top-actions{display:flex;gap:10px;align-items:center}.icon-btn{width:42px;height:42px;border-radius:14px;border:1px solid var(--line);background:#fff}.profile-chip{border:1px solid var(--line);background:#fff;border-radius:16px;padding:6px 10px 6px 6px;display:flex;align-items:center;gap:8px;color:var(--ink);font-weight:700}.avatar{width:30px;height:30px;border-radius:10px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center}.level{font-size:11px;color:var(--muted);font-weight:600}.screen{display:none;max-width:1180px;margin:0 auto;padding:34px 28px 60px}.screen.active{display:block}.hero-grid{display:grid;grid-template-columns:1.7fr .8fr;gap:20px}.hero-card,.streak-card,.task-card,.lesson-card,.question-card{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow)}.hero-card{border-radius:30px;padding:30px;background:linear-gradient(135deg,#fff 20%,#f1efff 100%)}.hero-card h1{font-size:38px;line-height:1.05;margin:8px 0 10px}.hero-card p{font-size:17px;color:var(--muted);max-width:650px}.eyebrow{text-transform:uppercase;letter-spacing:.1em;font-size:11px;font-weight:850;color:var(--purple)}.goal-row{display:flex;gap:44px;margin-top:24px}.goal-row strong{display:block;font-size:18px}.goal-row span{font-size:12px;color:var(--muted)}.progress-track,.mini-progress,.lesson-progress{height:8px;background:#e8eaf0;border-radius:999px;overflow:hidden}.progress-track{margin-top:18px}.progress-fill,.mini-progress>div,.lesson-progress>div{height:100%;background:var(--purple);border-radius:inherit;transition:width .3s}.streak-card{border-radius:30px;padding:26px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}.streak-icon{font-size:42px}.streak-number{font-size:36px;font-weight:900}.streak-label{color:var(--muted);font-size:13px}.streak-total{color:#98a2b3;font-size:10px;margin-top:3px}.week-dots{display:flex;gap:7px;margin-top:18px}.week-dots span{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#f1f3f6;font-size:10px;color:#8a94a3}.week-dots .done{background:var(--green-soft);color:var(--green)}.week-dots .today{outline:2px solid var(--purple);color:var(--purple);background:#fff}.section-block{margin-top:34px}.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:14px}.section-heading h2{margin:4px 0 0;font-size:25px}.text-btn{border:0;background:transparent;color:var(--muted);font-size:12px}.task-list{display:grid;gap:12px}.task-card{border-radius:22px;padding:18px;display:grid;grid-template-columns:56px 1fr auto;align-items:center;gap:16px}.task-card.featured{border-color:#d9d4ff}.task-card.locked{opacity:.72}.task-icon{width:54px;height:54px;border-radius:18px;display:grid;place-items:center;font-weight:900;font-size:22px}.task-icon.math{background:var(--purple-soft);color:var(--purple)}.task-icon.practice{background:var(--orange-soft);color:#d98611}.task-icon.quiz{background:var(--green-soft);color:var(--green)}.task-main h3{margin:5px 0 5px}.task-main p{margin:0;color:var(--muted);font-size:13px}.task-meta{display:flex;gap:12px;font-size:11px;font-weight:750;color:var(--muted)}.mini-progress{margin-top:12px;width:min(400px,100%);height:5px}.primary-btn,.secondary-btn{border-radius:14px;padding:11px 17px;font-weight:800;border:0}.primary-btn{background:var(--purple);color:#fff;box-shadow:0 7px 16px rgba(109,92,231,.2)}.primary-btn:hover{transform:translateY(-1px)}.secondary-btn{background:#f2f4f7;color:var(--ink);border:1px solid var(--line)}.secondary-btn:disabled{cursor:not-allowed;color:#98a2b3}.pill{background:#fff;border:1px solid var(--line);padding:7px 10px;border-radius:999px;font-size:11px;color:var(--muted)}.map-row{background:#fff;border:1px solid var(--line);border-radius:24px;padding:26px;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow);overflow:auto}.map-node{display:flex;align-items:center;gap:10px;min-width:max-content;color:#98a2b3}.map-node span{width:40px;height:40px;border-radius:14px;display:grid;place-items:center;background:#f1f3f6;font-weight:850}.map-node b{font-size:12px}.active-node{color:var(--purple)}.active-node span{background:var(--purple-soft);color:var(--purple)}.map-line{width:70px;height:3px;background:#edf0f4;margin:0 10px}.lesson-screen{max-width:1320px}.lesson-topbar{display:grid;grid-template-columns:150px 1fr 120px;align-items:center;gap:18px;margin-bottom:22px}.back-btn{border:0;background:transparent;font-weight:800;color:var(--muted);text-align:left}.lesson-progress-wrap{display:flex;align-items:center;gap:12px}.lesson-progress{flex:1}.lesson-progress-wrap span{font-size:12px;color:var(--muted)}.xp-badge{text-align:right;font-weight:850}.lesson-layout{display:grid;grid-template-columns:270px 1fr;gap:24px}.lesson-sidebar{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;height:max-content;position:sticky;top:105px}.subject-tag{font-size:11px;font-weight:800;color:var(--purple)}.lesson-sidebar h2{font-size:22px}.lesson-sidebar ol{margin:22px 0;padding-left:22px;color:#98a2b3}.lesson-sidebar li{padding:8px 4px;font-size:13px}.lesson-sidebar li.current{color:var(--ink);font-weight:800}.help-box{margin-top:18px;background:var(--purple-soft);padding:15px;border-radius:16px}.help-box strong,.help-box span{display:block}.help-box strong{font-size:12px}.help-box span{font-size:11px;color:var(--muted);margin-top:5px}.reader-toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.tool-btn{border:1px solid var(--line);background:#fff;border-radius:12px;padding:9px 12px;font-size:12px;font-weight:750;color:#475467}.lesson-card{min-height:430px;border-radius:28px;padding:38px}.lesson-card h1{font-size:34px;margin-top:0}.lesson-card h2{font-size:24px}.lesson-card p,.lesson-card li{font-size:18px;line-height:1.65}.lesson-card .big-number{font-size:50px;font-weight:900;color:var(--purple);letter-spacing:.04em;margin:18px 0}.lesson-card .note{background:#f7f8fa;border-radius:16px;padding:14px 16px;font-size:14px;color:#475467}.lesson-card .example-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0}.example-tile{background:#f8f8fc;border:1px solid var(--line);border-radius:16px;padding:16px;text-align:center}.example-tile b{display:block;font-size:24px}.example-tile span{font-size:11px;color:var(--muted)}.lesson-actions{display:flex;justify-content:space-between;margin-top:14px}.activity-wrap{max-width:760px;margin:0 auto}.activity-head{display:flex;align-items:center;gap:14px;margin:28px 0 16px}.task-icon.big{width:64px;height:64px}.question-card{border-radius:26px;padding:28px;min-height:360px}.question-card h3{font-size:25px}.answer-grid{display:grid;gap:10px;margin-top:20px}.answer-btn{padding:14px;border-radius:14px;border:1px solid var(--line);background:#fff;text-align:left;font-weight:750}.answer-btn:hover{border-color:#bbb3ff;background:#faf9ff}.answer-btn.correct{border-color:#83d1a8;background:var(--green-soft)}.answer-btn.wrong{border-color:#f2b2a9;background:#fff0ee}.feedback{margin-top:16px;padding:14px;border-radius:14px;background:#f7f8fa}.activity-footer{display:flex;justify-content:space-between;align-items:center;margin-top:18px}.score-big{font-size:46px;font-weight:900;color:var(--purple)}dialog{border:0;border-radius:24px;padding:0;width:min(560px,calc(100vw - 30px));box-shadow:0 30px 80px rgba(0,0,0,.2)}dialog::backdrop{background:rgba(22,26,35,.48)}.dialog-card{padding:24px}.dialog-head{display:flex;align-items:center;justify-content:space-between}.dialog-head h3{margin:0}.close-btn{border:0;background:#f1f3f6;width:34px;height:34px;border-radius:12px;font-size:22px}.dialog-note{font-size:12px;color:var(--muted);line-height:1.5}.quick-questions{display:flex;gap:7px;flex-wrap:wrap}.quick-questions button{border:1px solid var(--line);border-radius:999px;background:#fff;padding:8px 10px;font-size:11px}textarea{width:100%;height:100px;margin:14px 0 10px;border:1px solid var(--line);border-radius:14px;padding:12px;resize:vertical}.full{width:100%}.tutor-answer{margin-top:12px;background:var(--purple-soft);border-radius:14px;padding:13px;font-size:13px;line-height:1.5}.toast{position:fixed;right:24px;bottom:24px;background:#182230;color:#fff;padding:12px 16px;border-radius:14px;opacity:0;transform:translateY(8px);pointer-events:none;transition:.25s;box-shadow:var(--shadow);font-size:13px}.toast.show{opacity:1;transform:translateY(0)}
@media(max-width:850px){.hero-grid{grid-template-columns:1fr}.lesson-layout{grid-template-columns:1fr}.lesson-sidebar{position:static}.lesson-sidebar ol{display:none}.task-card{grid-template-columns:48px 1fr}.task-card>button{grid-column:1/-1}.lesson-topbar{grid-template-columns:100px 1fr}.xp-badge{display:none}.lesson-card{padding:24px}.lesson-card h1{font-size:28px}.lesson-card p,.lesson-card li{font-size:16px}.example-grid{grid-template-columns:1fr!important}.topbar{padding:0 16px}.brand-subtitle,.level{display:none}.screen{padding:24px 16px 50px}}

/* v0.2 onboarding + clearer progress */
.trial-chip{font-size:11px;font-weight:800;color:#7a5b09;background:#fff5d8;border:1px solid #f4dfa2;border-radius:999px;padding:7px 10px;white-space:nowrap}
.onboarding-screen{max-width:none!important;padding:42px 20px 70px!important}.onboarding-wrap{max-width:760px;margin:0 auto}.onboarding-card{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:32px;padding:38px}.onboarding-logo{width:58px;height:58px;border-radius:18px;background:var(--purple);color:#fff;display:grid;place-items:center;font-size:30px;font-weight:900;margin-bottom:18px;box-shadow:0 10px 24px rgba(109,92,231,.24)}.onboarding-card h1{font-size:36px;margin:8px 0 10px}.onboarding-lead{color:var(--muted);font-size:16px;line-height:1.6;margin-bottom:26px}.form-grid{display:grid;grid-template-columns:1.4fr .6fr;gap:16px}.field{display:flex;flex-direction:column;gap:7px}.field>span,.language-choice>div:first-learner{font-size:13px;font-weight:800}.field input,.field select{height:48px;border:1px solid var(--line);background:#fff;border-radius:14px;padding:0 13px;color:var(--ink);outline:none}.field input:focus,.field select:focus{border-color:#b7aff7;box-shadow:0 0 0 3px #f0edff}.field small{font-size:11px;color:var(--muted);line-height:1.45}.full-field{grid-column:1/-1}.language-choice{margin-top:22px}.choice-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:10px}.choice-card{border:1px solid var(--line);border-radius:16px;padding:14px;display:flex;align-items:center;gap:10px;cursor:pointer}.choice-card:has(input:checked){border-color:#a9a0f6;background:#f7f5ff}.choice-card input{accent-color:var(--purple)}.choice-card span{display:flex;flex-direction:column}.choice-card small{color:var(--muted);margin-top:2px}.russian-first-note{display:flex;gap:12px;align-items:flex-start;background:var(--blue-soft);border-radius:17px;padding:15px;margin-top:20px}.russian-first-note>span{font-size:24px}.russian-first-note b,.russian-first-note small{display:block}.russian-first-note small{color:#526276;line-height:1.45;margin-top:3px}.onboarding-cta{width:100%;margin-top:18px;padding:14px 18px;font-size:15px}
.task-action{display:flex;flex-direction:column;align-items:flex-end;gap:8px;min-width:118px}.task-status{min-height:24px;font-size:11px;font-weight:850;border-radius:999px;padding:4px 9px;color:transparent}.task-card.completed{background:#f4fbf7;border-color:#b9e6cd;box-shadow:0 10px 30px rgba(43,163,106,.08)}.task-card.completed .task-icon{background:#dcf5e7!important;color:var(--green)!important}.task-card.completed .task-status{color:var(--green);background:#e2f7eb}.task-card.completed .mini-progress>div{background:var(--green)}.task-card.next-task{border-color:#a99ff5;box-shadow:0 0 0 3px #efecff, var(--shadow)}.task-card.next-task .task-status{color:var(--purple);background:var(--purple-soft)}
.subject-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.subject-card{border:1px solid var(--line);background:#fff;border-radius:19px;padding:17px;text-align:left;box-shadow:0 8px 24px rgba(32,45,76,.05);display:flex;flex-direction:column;gap:5px;min-height:122px}.subject-card:hover{border-color:#cfc9fa;transform:translateY(-1px)}.subject-card.active-subject{border-color:#cfc9fa;background:#faf9ff}.subject-emoji{font-size:26px;margin-bottom:7px}.subject-card b{font-size:14px}.subject-card small{font-size:11px;color:var(--muted)}
.profile-summary{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0}.profile-summary>div{background:#f7f8fa;border-radius:14px;padding:12px}.profile-summary span,.profile-summary b{display:block}.profile-summary span{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}.profile-summary b{margin-top:4px;font-size:14px}
@media(max-width:850px){.trial-chip{display:none}.onboarding-card{padding:26px 20px}.onboarding-card h1{font-size:30px}.form-grid,.choice-row{grid-template-columns:1fr}.full-field{grid-column:auto}.subject-grid{grid-template-columns:repeat(2,1fr)}.task-action{align-items:stretch;grid-column:1/-1;width:100%}.task-status{align-self:flex-start}.profile-summary{grid-template-columns:1fr}.subject-card{min-height:108px}}

/* v0.4 optional homework + longer quiz */
.optional-task{border-style:dashed;background:#fcfcff}.optional-task .task-icon.homework,.task-icon.homework{background:#eef5ff;color:#3b82f6}.optional-status{color:#667085!important;background:#f2f4f7!important}.optional-task.completed{border-style:solid;background:#f4fbf7;border-color:#b9e6cd}.optional-task.completed .optional-status{color:var(--green)!important;background:#e2f7eb!important}.optional-task.completed .task-icon.homework{background:#dcf5e7;color:var(--green)}.optional-banner{margin:0 0 14px;background:#f7f5ff;border:1px solid #e2ddff;color:#5b4f93;border-radius:16px;padding:13px 15px;font-size:13px;line-height:1.45}.quiz-progress-note{font-size:12px;color:var(--muted);margin-top:8px}

/* v0.5 flexible 170-day program, weekly schedule, subject + parent dashboards */
.parent-link-btn{border:1px solid var(--line);background:#fff;border-radius:14px;padding:9px 13px;font-size:12px;font-weight:850;color:#475467;white-space:nowrap}.parent-link-btn:hover{border-color:#cfc9fa;background:#faf9ff}
.week-nav-actions,.day-nav-actions{display:flex;gap:8px}.compact{padding:9px 12px!important;min-height:38px}.week-block{overflow:hidden}.week-schedule{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.week-day-card{border:1px solid var(--line);background:#fff;border-radius:18px;padding:14px;text-align:left;min-height:150px;box-shadow:0 6px 20px rgba(32,45,76,.04);transition:.18s}.week-day-card:hover{transform:translateY(-1px);border-color:#cfc9fa}.week-day-card.active{border-color:#9d91f3;box-shadow:0 0 0 3px #efecff}.week-day-card.done{background:#f4fbf7;border-color:#b9e6cd}.week-day-top{display:flex;justify-content:space-between;align-items:center;gap:8px}.week-day-top b{font-size:13px}.week-day-top small{font-size:10px;color:var(--muted)}.week-day-subjects{display:flex;flex-direction:column;gap:5px;margin-top:12px}.week-day-subjects span{font-size:10px;color:#526276;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.week-done{font-size:10px;font-weight:850;color:var(--green);margin-top:10px}.pace-note{margin-top:12px;background:#f7f5ff;border:1px solid #e2ddff;border-radius:15px;padding:12px 14px;font-size:12px;line-height:1.45;color:#5b4f93}.day-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}.day-summary>div{background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px 14px}.day-summary strong,.day-summary span{display:block}.day-summary strong{font-size:18px}.day-summary span{font-size:10px;color:var(--muted);margin-top:2px}.route-icon{font-size:24px}.subject-route-card{cursor:pointer}.subject-route-card .task-status:empty{padding:0}.subject-route-card.completed .task-status{color:var(--green)}
.subject-page-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:22px 0}.subject-page-head h1{font-size:40px;margin:5px 0}.subject-page-head p{color:var(--muted);max-width:700px}.subject-progress-ring{width:120px;height:120px;border-radius:50%;display:grid;place-items:center;align-content:center;background:conic-gradient(var(--green) 0 8%, #eef2f5 8% 100%);box-shadow:inset 0 0 0 12px #fff;border:1px solid var(--line)}.subject-progress-ring strong{font-size:24px}.subject-progress-ring span{font-size:10px;color:var(--muted)}.subject-dashboard-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:14px}.subject-dashboard-grid.lower{grid-template-columns:1fr 1fr;margin-top:14px}.subject-panel{margin:0!important}.subject-panel h2{margin:8px 0}.subject-panel p{color:var(--muted);line-height:1.5}.recommend-item{background:#f7f8fa;border-radius:15px;padding:14px}.recommend-item b,.recommend-item span{display:block}.recommend-item span{font-size:12px;color:var(--muted);margin-top:5px;line-height:1.45}.topic-map-list{display:grid;gap:8px}.topic-row{border:1px solid var(--line);background:#fff;border-radius:15px;padding:12px 14px;display:grid;grid-template-columns:36px 1fr auto;align-items:center;text-align:left}.topic-row>span{width:30px;height:30px;border-radius:10px;background:#f2f0ff;color:var(--purple);display:grid;place-items:center;font-weight:850}.topic-row b{font-size:13px}.topic-row small{font-size:10px;color:var(--muted)}.topic-row.done{background:#f4fbf7;border-color:#b9e6cd}.topic-row.done>span{background:#dcf5e7;color:var(--green)}
.parent-head{display:flex;justify-content:space-between;gap:20px;align-items:stretch;margin:22px 0}.parent-head h1{font-size:40px;margin:5px 0}.parent-head p{color:var(--muted)}.subscription-card{min-width:260px;background:#fff8e8;border:1px solid #f0d797;border-radius:20px;padding:18px;display:flex;flex-direction:column;align-items:flex-start;gap:6px}.subscription-card strong{font-size:18px}.subscription-card span{font-size:12px;color:#7a5b09}.subscription-card button{margin-top:6px}.parent-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:14px}.parent-stats>div{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}.parent-stats strong,.parent-stats span{display:block}.parent-stats strong{font-size:24px}.parent-stats span{font-size:11px;color:var(--muted);margin-top:3px}.parent-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:14px}.parent-grid>.section-block{margin:0}.parent-subject-list{display:grid;gap:10px}.parent-subject-row{display:grid;grid-template-columns:150px 1fr 42px;gap:10px;align-items:center;font-size:12px}.parent-progress{height:8px;background:#edf0f4;border-radius:999px;overflow:hidden}.parent-progress i{display:block;height:100%;background:var(--green);border-radius:999px}.parent-subject-row b{text-align:right}.parent-alert{background:#fff7ef;border:1px solid #f6d5b6;border-radius:15px;padding:13px;margin-bottom:10px}.parent-alert.neutral{background:#f7f8fa;border-color:var(--line)}.parent-alert b,.parent-alert span{display:block}.parent-alert span{font-size:12px;color:var(--muted);margin-top:5px;line-height:1.45}.pace-settings{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:center}.pace-settings label>span:first-learner{display:block;font-size:12px;font-weight:800;margin-bottom:6px}.pace-settings select{width:100%;height:46px;border:1px solid var(--line);border-radius:13px;padding:0 12px;background:#fff}.toggle-row{display:flex;gap:10px;align-items:center}.toggle-row input{accent-color:var(--purple);width:18px;height:18px}.toggle-row b,.toggle-row small{display:block}.toggle-row small{color:var(--muted);margin-top:3px}
@media(max-width:1000px){.week-schedule{grid-template-columns:1fr 1fr}.subject-dashboard-grid,.subject-dashboard-grid.lower,.parent-grid{grid-template-columns:1fr}.parent-stats{grid-template-columns:1fr 1fr}.parent-head{flex-direction:column}.subscription-card{min-width:0}.subject-progress-ring{width:90px;height:90px}.pace-settings{grid-template-columns:1fr}}
@media(max-width:650px){.week-schedule{grid-template-columns:1fr}.day-summary,.parent-stats{grid-template-columns:1fr}.day-nav-actions{flex-direction:column}.subject-page-head{align-items:flex-start}.subject-progress-ring{display:none}.parent-link-btn{display:none}.parent-subject-row{grid-template-columns:120px 1fr 38px}}

.week-day-card.locked{opacity:.52;cursor:not-allowed;background:#f7f8fa;box-shadow:none}.week-day-card.locked:hover{transform:none;border-color:var(--line)}.week-lock{font-size:9px;font-weight:750;color:#8a94a3;margin-top:10px}.day-nav-actions .primary-btn:disabled{background:#eceef3;color:#98a2b3;box-shadow:none;cursor:not-allowed;transform:none}

/* v0.6 curriculum map + generic session */
.program-head{display:flex;justify-content:space-between;gap:24px;align-items:flex-start;margin:24px 0 28px}.program-head h1{margin:6px 0 8px}.program-head p{max-width:760px;color:var(--muted);font-size:18px;line-height:1.55}.program-stat{min-width:150px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px;text-align:center;box-shadow:var(--shadow)}.program-stat strong{display:block;font-size:38px;color:var(--purple)}.program-stat span{color:var(--muted)}.program-week-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.program-week{border:1px solid var(--line);background:#fff;border-radius:18px;padding:16px;text-align:left;cursor:pointer;transition:.18s}.program-week:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow)}.program-week.current{border-color:#7560f5;background:#f6f3ff}.program-week.done{border-color:#b9e9cf;background:#f3fcf7}.program-week.locked{opacity:.58;cursor:not-allowed}.program-week b{display:block;font-size:17px}.program-week small{display:block;margin-top:5px;color:var(--muted)}.program-week em{display:block;margin-top:10px;font-style:normal;font-size:12px;font-weight:800;color:#6a58e8}.program-week.done em{color:#14995c}.program-note{font-size:17px;color:var(--muted);line-height:1.6;max-width:900px}.generic-session-card{max-width:980px;margin:18px auto;background:#fff;border:1px solid var(--line);border-radius:28px;padding:40px;box-shadow:var(--shadow)}.generic-session-card h1{font-size:42px;margin:8px 0 12px}.generic-session-card>p{font-size:19px;color:var(--muted);line-height:1.55}.generic-icon{font-size:44px;margin-top:18px}.generic-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:30px 0}.generic-steps>div{background:#f7f8fb;border:1px solid var(--line);border-radius:20px;padding:20px}.generic-steps span{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#eeeaff;color:#6553df;font-weight:900}.generic-steps b,.generic-steps small{display:block;margin-top:10px}.generic-steps small{color:var(--muted);line-height:1.4}.demo-note{margin:22px 0}.generic-session-card .primary-btn{margin-top:4px}.activity-top{display:flex;justify-content:space-between;align-items:center;max-width:1100px;margin:20px auto 0}
@media(max-width:900px){.program-week-grid{grid-template-columns:repeat(2,1fr)}.generic-steps{grid-template-columns:1fr}.program-head{flex-direction:column}.program-stat{width:100%}}

/* v0.7 regional branches + Chinese HSK overlay */
.hsk-panel,.region-panel{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow)}
.hsk-lead,.region-panel p{color:var(--muted);font-size:14px;line-height:1.6;max-width:900px}.hsk-skills{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}.hsk-skills>div{position:relative;overflow:hidden;background:#f7f8fa;border:1px solid var(--line);border-radius:16px;padding:14px 14px 19px}.hsk-skills b,.hsk-skills span{display:block}.hsk-skills b{font-size:18px}.hsk-skills span{font-size:11px;color:var(--muted);margin-top:2px}.hsk-skills i{position:absolute;left:0;bottom:0;height:5px;background:var(--green);border-radius:0 999px 999px 0}.hsk-note{margin-top:12px;font-size:11px;color:var(--muted);background:#f7f5ff;border:1px solid #e5e0ff;border-radius:13px;padding:11px 13px}.hsk-tag{display:inline-block;margin-left:8px;padding:3px 7px;border-radius:999px;background:#fff4df;color:#a96808;font-size:9px;font-style:normal;font-weight:800;vertical-align:middle}.hsk-parent{background:#f7f5ff!important;border-color:#ded8ff!important}.field select{min-height:46px;border:1px solid var(--line);border-radius:13px;padding:0 12px;background:#fff;color:var(--ink)}
@media(max-width:800px){.hsk-skills{grid-template-columns:1fr 1fr}.hsk-tag{display:block;width:max-content;margin:5px 0 0}}

/* v0.8: region request + real first-week session engine */
.region-request-box{margin-top:12px;padding:14px;border:1px dashed rgba(76,86,106,.22);border-radius:16px;background:rgba(248,250,255,.9)}
.region-request-copy{display:flex;gap:5px;flex-direction:column;margin-bottom:10px}.region-request-copy b{font-size:14px}.region-request-copy span{font-size:12px;color:var(--muted,#6f7888)}
.region-request-row{display:flex;gap:8px;align-items:center}.region-request-row input{flex:1;min-width:0}.region-request-success{margin-top:10px;padding:10px 12px;border-radius:12px;background:#eaf8ef;color:#24683c;font-size:13px;line-height:1.4}
.real-lesson-block{display:grid;gap:14px;margin-top:20px}.lesson-explain-box,.lesson-check-box,.optional-box{padding:18px;border-radius:18px;background:#f7f9fc;border:1px solid rgba(44,54,75,.08)}
.lesson-explain-box h3,.lesson-check-box h3,.optional-box h3{margin:0 0 10px}.lesson-explain-box p{margin:0 0 10px;line-height:1.65}.lesson-key-points{display:grid;gap:8px;margin-top:12px}.lesson-key-point{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border-radius:12px;background:white}.lesson-key-point span{width:24px;height:24px;display:inline-grid;place-items:center;border-radius:999px;background:#eaf8ef;color:#287549;font-weight:800;flex:0 0 auto}
.generic-answer-grid{display:grid;gap:9px;margin-top:12px}.generic-answer{border:1px solid rgba(46,56,76,.12);background:white;border-radius:14px;padding:12px 14px;text-align:left;font:inherit;cursor:pointer}.generic-answer:hover{border-color:#745cf2}.generic-answer.correct{background:#e9f8ef;border-color:#58b67a}.generic-answer.wrong{background:#fff0f0;border-color:#dd7a7a}.generic-feedback{margin-top:12px;padding:12px 14px;border-radius:13px;background:#eef3ff;line-height:1.5}.optional-box{background:#fffaf0}.optional-box p{margin:0;line-height:1.55}.session-progress-note{display:flex;gap:8px;align-items:center;color:#677082;font-size:13px;margin-top:14px}
@media(max-width:700px){.region-request-row{flex-direction:column;align-items:stretch}}


/* v0.9 subject quiz engine + weak-topic recommendations */
.weak-topic-list{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.weak-topic-list span{padding:8px 11px;border-radius:999px;background:#fff3e8;color:#8d531d;font-size:12px;font-weight:750;border:1px solid #f4d8bb}.result-actions{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap;margin-top:22px}.success-recommend{background:#f1fbf5!important;border:1px solid #c5ead4}.quiz-history-list{display:grid;gap:9px}.quiz-history-row{display:grid;grid-template-columns:minmax(160px,1fr) 64px minmax(150px,.8fr);align-items:center;gap:12px;padding:13px 15px;border:1px solid var(--line);border-radius:15px;background:#fff}.quiz-history-row>span{font-weight:750}.quiz-history-row>b{font-size:18px;color:var(--purple);text-align:right}.quiz-history-row>small{color:var(--muted);text-align:right}.empty-history{padding:16px;border-radius:15px;background:#f7f8fa;color:var(--muted);font-size:13px}.recommendation-panel .recommend-item+.recommend-item{margin-top:8px}
@media(max-width:700px){.quiz-history-row{grid-template-columns:1fr auto}.quiz-history-row>small{grid-column:1/-1;text-align:left}.result-actions>*{flex:1}.weak-topic-list{display:grid}}

/* v1.0 visual learning layer */
.lesson-visual{margin:0;border:1px solid rgba(74,83,112,.09);border-radius:22px;background:#f8f9ff;overflow:hidden}.lesson-visual svg{display:block;width:100%;height:auto;max-height:250px}.lesson-visual figcaption{padding:10px 14px 13px;color:#68708a;font-size:12px;line-height:1.45;border-top:1px solid rgba(74,83,112,.07);background:rgba(255,255,255,.7)}
.lesson-phase-chip{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#ece8ff;color:#5e4bc7;font-size:11px;font-weight:800;letter-spacing:.02em;margin-bottom:10px}
.real-lesson-block .lesson-visual+.lesson-explain-box{margin-top:0}
@media(max-width:700px){.lesson-visual svg{max-height:190px}.lesson-visual figcaption{font-size:11px}}
.program-stats{display:flex;gap:10px;flex-wrap:wrap}.program-stats .program-stat{min-width:118px}

/* v1.1 unified lesson experience across all subjects */
.generic-lesson-screen .lesson-sidebar h2{line-height:1.2;overflow-wrap:anywhere}.generic-lesson-screen .xp-badge{font-size:12px;color:var(--muted);font-weight:800}.generic-lesson-screen .lesson-card{min-height:470px}.generic-lesson-screen .lesson-card>.lesson-visual{margin-bottom:22px}.lesson-lead,.simple-lead{font-size:21px!important;line-height:1.6!important;color:#2f3a50}.lesson-explain-note{font-size:16px!important;line-height:1.65!important}.lesson-key-points.large{gap:12px;margin:20px 0}.lesson-key-points.large .lesson-key-point{padding:16px 18px;border:1px solid var(--line);font-size:17px;line-height:1.55}.lesson-key-points.large .lesson-key-point span{width:30px;height:30px}.lesson-answer-grid{margin-top:24px}.lesson-answer-grid .generic-answer{font-size:16px;padding:16px 18px}.lesson-homework-box{padding:22px!important;margin:18px 0;background:#fffaf0}.tool-btn.active-tool{background:var(--purple-soft);border-color:#d8d0ff;color:#5746c8}.translation-layer{margin-top:24px;padding:22px;border-radius:20px;background:#f4f7ff;border:1px solid #dfe6ff}.translation-layer h1{font-size:26px;margin:8px 0 12px}.translation-layer p{font-size:16px!important;line-height:1.65!important}.translation-glossary{display:grid;gap:8px;margin:14px 0;padding:14px;border-radius:14px;background:#fff;color:#45506a;font-size:14px;line-height:1.55}.translation-note{margin-top:14px;padding-top:12px;border-top:1px solid #dfe6ff;color:#6f7890;font-size:11px;line-height:1.5}.generic-lesson-screen .reader-toolbar{position:sticky;top:86px;z-index:4;padding:8px 0;background:linear-gradient(var(--bg) 72%,rgba(244,247,252,0));}.generic-lesson-screen .lesson-actions{position:sticky;bottom:10px;z-index:3;padding-top:12px;background:linear-gradient(rgba(244,247,252,0),var(--bg) 34%)}
@media(max-width:850px){.generic-lesson-screen .reader-toolbar{position:static}.generic-lesson-screen .lesson-actions{position:static}.generic-lesson-screen .lesson-card{min-height:0}.lesson-lead,.simple-lead{font-size:18px!important}}

/* v1.2 · active learning, practice and parent-verified homework */
.micro-check{margin-top:24px;padding:20px;border:1px solid #dde3f2;border-radius:20px;background:#f8faff}.micro-check.passed{background:#f2fbf6;border-color:#c7ead7}.micro-check h3{margin:7px 0 14px;font-size:18px}.micro-check .generic-answer.wrong,.math-gate-answer.wrong,.generic-gate-answer.wrong{background:#fff0f0;border-color:#df8585}.generic-gate-answer,.math-gate-answer{border:1px solid rgba(46,56,76,.12);background:#fff;border-radius:14px;padding:13px 15px;text-align:left;font:inherit;font-weight:700;cursor:pointer}.generic-gate-answer:hover:not(:disabled),.math-gate-answer:hover:not(:disabled){border-color:#745cf2}.generic-feedback.success{background:#edf9f2;color:#17653c}.generic-feedback.retry{background:#fff4f1;color:#8a3e32}.practice-panel{margin-top:18px;padding:22px;border:1px solid #dde3f2;border-radius:20px;background:#f8faff}.practice-panel h3{margin:0 0 16px;line-height:1.45}.practice-multiselect{display:grid;gap:10px;margin-bottom:16px}.practice-select-card{padding:15px 16px;border-radius:14px;border:1px solid #dfe4ee;background:#fff;text-align:left;font:inherit;font-weight:700;cursor:pointer}.practice-select-card.selected{background:#eeeaff;border-color:#745cf2;box-shadow:0 0 0 2px rgba(116,92,242,.08)}.sortable-steps{display:grid;gap:10px;margin:14px 0 18px}.sortable-step{display:flex;gap:12px;align-items:center;padding:15px 16px;background:#fff;border:1px solid #dfe4ee;border-radius:14px;cursor:grab;user-select:none}.sortable-step.dragging{opacity:.45;border-color:#745cf2}.drag-handle{font-size:21px;color:#9aa3b8;letter-spacing:-4px}.homework-assignment-card{display:flex;gap:18px;align-items:flex-start;padding:22px;border-radius:20px;background:#fffaf0;border:1px solid #eeddb2;margin:18px 0}.homework-assignment-card.compact-homework{margin-top:22px}.homework-assignment-card h3{margin:0 0 8px}.homework-assignment-card p{margin:0 0 8px;line-height:1.55}.homework-assignment-card small{color:#7b6b43;line-height:1.45}.homework-notebook{font-size:36px;flex:0 0 auto}.homework-controls{display:grid;grid-template-columns:max-content 1fr;gap:14px;align-items:center;margin:16px 0}.homework-done-check{display:flex;gap:10px;align-items:center;padding:13px 14px;border:1px solid #dfe4ee;border-radius:14px;background:#fff}.homework-done-check.disabled{opacity:.55}.homework-done-check input{width:19px;height:19px;accent-color:#2fa66b}.homework-done-check b,.homework-done-check small{display:block}.homework-done-check small{color:var(--muted);margin-top:3px;line-height:1.35}.notebook-tip{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;background:#f4f2ff;border:1px solid #ddd7ff;border-radius:16px;margin-bottom:12px}.notebook-tip b,.notebook-tip span{display:block}.notebook-tip span{font-size:12px;color:var(--muted);line-height:1.5}.parent-homework-list{display:grid;gap:10px}.parent-homework-row{display:grid;grid-template-columns:1fr auto;gap:16px;padding:15px 16px;border:1px solid var(--line);border-radius:16px;background:#fff}.parent-homework-row.waiting{background:#fffaf0;border-color:#eeddb2}.parent-homework-row.verified{background:#f1fbf5;border-color:#c8e8d5}.parent-homework-main b,.parent-homework-main span,.parent-homework-main small{display:block}.parent-homework-main span{margin-top:6px;line-height:1.45;color:#4c566f}.parent-homework-main small{margin-top:7px;color:var(--muted)}.parent-homework-actions{display:flex;align-items:center}.verified-badge{font-weight:800;color:#18834d;background:#def4e7;border-radius:999px;padding:8px 11px;white-space:nowrap}
@media(max-width:760px){.homework-controls{grid-template-columns:1fr}.parent-homework-row{grid-template-columns:1fr}.homework-assignment-card{flex-direction:column}}

/* v1.3.1: keep every new learning step aligned to the top of the viewport */
#lessonCard, #genericLessonCard, #practiceContent, #homeworkContent { scroll-margin-top: 132px; }

/* v1.4 persistent mastery / smart review */
.hidden{display:none!important}
.smart-review-section{border:1px solid #dcd7ff;background:linear-gradient(135deg,#fff 0%,#f8f7ff 100%)}
.smart-review-lead{margin:-4px 0 18px;color:#68758e;max-width:850px;line-height:1.55}
.smart-review-list{display:grid;gap:12px}
.smart-review-card{width:100%;display:grid;grid-template-columns:52px 1fr auto;align-items:center;gap:14px;padding:16px 18px;border:1px solid #e3e6ef;border-radius:18px;background:#fff;text-align:left;cursor:pointer;transition:.18s ease;font:inherit;color:#111d35}
.smart-review-card:hover{transform:translateY(-1px);border-color:#7965ef;box-shadow:0 8px 22px rgba(70,61,143,.08)}
.smart-review-card>span{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;background:#f0edff;font-size:24px}
.smart-review-card b{display:block;font-size:16px;margin-bottom:4px}
.smart-review-card small{display:block;color:#72809a;font-size:13px}
.smart-review-card em{font-style:normal;font-weight:800;color:#6552e8;white-space:nowrap}
@media(max-width:720px){.smart-review-card{grid-template-columns:44px 1fr}.smart-review-card em{grid-column:2}}

/* v1.5 — richer subject-specific practice */
.practice-kind{display:inline-flex;align-items:center;gap:7px;margin:0 0 10px;padding:6px 10px;border-radius:999px;background:#eeeaff;color:#5a48ce;font-size:12px;font-weight:900;letter-spacing:.02em;text-transform:uppercase}
.match-practice{display:grid;gap:11px;margin:14px 0 18px}.match-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,1fr);gap:12px;align-items:center}.match-left{padding:14px 15px;background:#fff;border:1px solid #dfe4ee;border-radius:14px;font-weight:800;line-height:1.45}.match-select{width:100%;padding:14px 38px 14px 14px;border:1px solid #dfe4ee;border-radius:14px;background:#fff;font:inherit;color:#23304b}
.classify-practice{display:grid;gap:10px;margin:14px 0 18px}.classify-card{display:grid;grid-template-columns:1fr auto;gap:14px;align-items:center;padding:14px 15px;border:1px solid #dfe4ee;border-radius:15px;background:#fff;font-weight:750;line-height:1.45}.classify-actions{display:flex;gap:7px}.classify-btn{border:1px solid #dfe4ee;background:#f7f8fb;border-radius:999px;padding:8px 11px;font:inherit;font-size:12px;font-weight:850;cursor:pointer}.classify-btn.selected{background:#eeeaff;border-color:#745cf2;color:#5948cb}.phrase-steps{grid-template-columns:repeat(auto-fit,minmax(120px,max-content));display:flex;flex-wrap:wrap}.phrase-chip{width:auto;min-width:100px}.phrase-audio-row{display:flex;justify-content:flex-end;margin-bottom:8px}.visual-choice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:14px 0 18px}.visual-choice{border:1px solid #dfe4ee;background:#fff;border-radius:16px;padding:12px;cursor:pointer;text-align:center;font:inherit;font-weight:800;color:#26324a}.visual-choice svg{width:100%;height:105px;display:block;background:#f8f9ff;border-radius:12px;margin-bottom:8px}.visual-choice.selected{border-color:#745cf2;box-shadow:0 0 0 3px rgba(116,92,242,.1);background:#faf9ff}
@media(max-width:780px){.match-row{grid-template-columns:1fr}.classify-card{grid-template-columns:1fr}.classify-actions{justify-content:flex-start}.visual-choice-grid{grid-template-columns:1fr}}
/* ОТ1ДО11 v2 production additions */
:root{--q5-purple:#6f5bd3;--q5-green:#2f9d6a;--q5-bg:#f6f8ff;--q5-ink:#27324d;--q5-muted:#69738d}
body{min-height:100vh}.hidden{display:none!important}.prod-shell{max-width:1280px;margin:0 auto;padding:0 26px 64px}.prod-topbar{display:flex;align-items:center;justify-content:space-between;padding:22px 0 18px;gap:20px}.prod-brand{display:flex;align-items:center;gap:12px}.prod-brand .brand-mark{width:46px;height:46px;border-radius:16px;background:linear-gradient(145deg,#745ee5,#5945c7);display:grid;place-items:center;color:#fff;font-size:25px;font-weight:900;box-shadow:0 10px 30px #6754d42b}.prod-brand b{font-size:23px;color:var(--q5-ink)}.prod-brand small{display:block;color:var(--q5-muted);margin-top:2px}.prod-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.prod-screen{display:none}.prod-screen.active{display:block}.auth-wrap{min-height:75vh;display:grid;place-items:center}.auth-card{width:min(720px,100%);background:#fff;border:1px solid #e6e9f4;border-radius:28px;padding:32px;box-shadow:0 20px 60px #33406b13}.auth-logo{width:64px;height:64px;border-radius:22px;background:#6f5bd3;color:#fff;display:grid;place-items:center;font-size:30px;font-weight:900;margin-bottom:18px}.auth-tabs{display:flex;background:#f2f4fb;border-radius:16px;padding:4px;margin:20px 0}.auth-tabs button{flex:1;border:0;background:transparent;padding:12px;border-radius:12px;font-weight:800;color:#69738d}.auth-tabs button.active{background:#fff;color:#27324d;box-shadow:0 4px 16px #33406b12}.auth-panel{display:none}.auth-panel.active{display:block}.privacy-note{display:flex;gap:12px;background:#effaf4;border:1px solid #d2efdf;border-radius:18px;padding:14px 16px;margin:16px 0;color:#385647}.credential-box{background:#f5f3ff;border:1px solid #dfdafb;border-radius:22px;padding:20px;margin:18px 0}.credential-code{font-size:27px;font-weight:900;letter-spacing:.04em;color:#5f49c8}.recovery-key{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;word-break:break-all;background:#fff;padding:12px;border-radius:12px;margin-top:8px}.hero-prod{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(260px,.45fr);gap:18px}.hero-card-prod,.status-card-prod{background:#fff;border:1px solid #e4e8f3;border-radius:26px;padding:25px;box-shadow:0 10px 35px #33406b0b}.status-card-prod{display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}.day-big{font-size:50px;font-weight:900;color:#27324d}.section-prod{margin-top:24px;background:#fff;border:1px solid #e4e8f3;border-radius:26px;padding:24px}.section-prod h2{margin:3px 0 14px}.week-grid-prod{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.week-mini{border:1px solid #e2e6f1;background:#fafbff;border-radius:18px;padding:13px;text-align:left;color:#27324d}.week-mini.active{border-color:#8d7de6;background:#f3f0ff}.week-mini.done{background:#eefaf3;border-color:#bfe7ce}.week-mini:disabled{opacity:.52}.week-mini small{display:block;color:#69738d;margin-top:6px}.route-prod{display:grid;gap:11px}.route-item{display:grid;grid-template-columns:54px 1fr auto;align-items:center;gap:14px;border:1px solid #e5e8f2;border-radius:20px;padding:16px;background:#fff}.route-item.done{background:#effaf4;border-color:#c5ead4}.route-icon-prod{width:50px;height:50px;display:grid;place-items:center;background:#f1efff;border-radius:16px;font-size:23px}.route-copy b{font-size:17px}.route-copy small{display:block;color:#69738d;margin-top:4px}.subject-quiz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.subject-quiz-card{border:1px solid #e4e8f3;background:#fafbff;border-radius:18px;padding:16px;text-align:left;cursor:pointer}.subject-quiz-card span{font-size:26px}.subject-quiz-card b{display:block;margin-top:7px}.lesson-prod-layout{display:grid;grid-template-columns:245px minmax(0,1fr);gap:20px;align-items:start}.lesson-sidebar-prod{position:sticky;top:18px;background:#eef0f6;border-radius:24px;padding:19px}.lesson-sidebar-prod h3{margin:2px 0 16px;font-size:16px}.lesson-path-prod{display:grid;gap:6px}.lesson-path-step{display:flex;align-items:center;gap:10px;padding:10px;border-radius:14px;color:#7b8296;font-size:14px}.lesson-path-step.current{background:#fff;color:#27324d;font-weight:800}.lesson-path-step.past{color:#2f9d6a}.lesson-path-dot{width:25px;height:25px;border-radius:50%;background:#d9dce7;display:grid;place-items:center;font-size:12px;font-weight:900}.current .lesson-path-dot{background:#6f5bd3;color:#fff}.past .lesson-path-dot{background:#ccebd8;color:#238356}.lesson-main-prod{min-width:0}.lesson-toolbar-prod{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:12px}.lesson-card-prod{background:#fff;border:1px solid #e4e8f3;border-radius:26px;padding:28px;box-shadow:0 10px 35px #33406b0b;scroll-margin-top:18px}.lesson-card-prod h1{font-size:29px;margin:5px 0 16px}.lesson-summary{font-size:19px;line-height:1.6}.lesson-visual{margin:0 0 18px}.lesson-visual svg{width:100%;max-height:250px}.lesson-visual figcaption{font-size:13px;color:#727c95;margin-top:8px}.key-points{display:grid;gap:10px}.key-point{display:flex;gap:10px;align-items:flex-start;background:#f6f8ff;border-radius:16px;padding:14px}.key-point span{color:#2f9d6a;font-weight:900}.question-box{margin-top:22px;border-top:1px solid #eef0f6;padding-top:20px}.answer-grid-prod{display:grid;gap:9px;margin-top:12px}.answer-prod{border:1px solid #dfe4ef;background:#fff;border-radius:15px;padding:13px 15px;text-align:left;font-weight:700}.answer-prod:hover{border-color:#8b7ce1}.feedback-prod{margin-top:14px;border-radius:15px;padding:13px 15px;background:#fff5e8;color:#715331}.feedback-prod.ok{background:#ebf9f1;color:#236c49}.review-prod{margin-top:10px;background:#f3f0ff;border-radius:15px;padding:14px}.lesson-footer-prod{display:flex;justify-content:space-between;gap:10px;margin-top:22px}.assist-box{margin:12px 0 0;background:#f5f3ff;border:1px solid #e1dcfb;border-radius:17px;padding:15px;white-space:pre-wrap}.practice-list{display:grid;gap:10px;margin-top:14px}.drag-row{display:flex;align-items:center;gap:10px;border:1px solid #dfe4ef;border-radius:14px;padding:12px;background:#fff;cursor:grab}.drag-row.dragging{opacity:.45}.drag-handle{color:#9aa3b8}.match-grid-prod{display:grid;gap:12px}.match-row-prod{display:grid;grid-template-columns:1fr 1fr;gap:10px;align-items:center}.match-row-prod select{width:100%}.classify-row{border:1px solid #e2e6ef;border-radius:14px;padding:13px;display:grid;grid-template-columns:1fr auto auto;gap:8px;align-items:center}.classify-row button.selected{background:#ece8ff;border-color:#7865d7}.visual-grid-prod{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.visual-choice-prod{border:1px solid #dfe4ef;background:#fff;border-radius:16px;padding:10px}.visual-choice-prod.selected{outline:3px solid #7e6cdd}.visual-choice-prod svg{width:100%;height:100px}.homework-prod{background:#fff9e8;border:1px solid #f1dfaa;border-radius:20px;padding:18px}.notebook-note{margin-top:12px;color:#6e6140}.paywall-wrap{min-height:70vh;display:grid;place-items:center}.paywall-card{width:min(650px,100%);background:#fff;border:1px solid #e2e6f1;border-radius:30px;padding:34px;text-align:center;box-shadow:0 20px 60px #33406b15}.price-row-prod{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:22px 0}.price-card-prod{border:1px solid #e0e4ef;border-radius:20px;padding:20px}.price{font-size:28px;font-weight:900}.parent-grid-prod{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.metric-card{background:#fafbff;border:1px solid #e5e8f2;border-radius:18px;padding:17px}.metric-card b{font-size:24px;display:block}.parent-table{width:100%;border-collapse:collapse}.parent-table th,.parent-table td{text-align:left;padding:12px;border-bottom:1px solid #edf0f6;vertical-align:top}.badge-prod{display:inline-flex;align-items:center;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:800;background:#eef0f6}.badge-prod.green{background:#e7f7ee;color:#25784f}.badge-prod.yellow{background:#fff4d9;color:#80611f}.quiz-card-prod{background:#fff;border:1px solid #e4e8f3;border-radius:26px;padding:28px;max-width:800px;margin:0 auto}.quiz-progress-prod{height:8px;background:#e9ecf4;border-radius:99px;overflow:hidden;margin:12px 0 22px}.quiz-progress-prod>div{height:100%;background:#6f5bd3}.toast-prod{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);opacity:0;background:#27324d;color:#fff;padding:11px 18px;border-radius:999px;transition:.2s;z-index:99}.toast-prod.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:900px){.hero-prod,.lesson-prod-layout{grid-template-columns:1fr}.lesson-sidebar-prod{position:static}.week-grid-prod{grid-template-columns:1fr}.subject-quiz-grid{grid-template-columns:repeat(2,1fr)}.parent-grid-prod{grid-template-columns:repeat(2,1fr)}.route-item{grid-template-columns:48px 1fr}.route-item>button{grid-column:2}.prod-topbar{align-items:flex-start;flex-direction:column}.visual-grid-prod{grid-template-columns:1fr}.price-row-prod{grid-template-columns:1fr}}
@media(max-width:560px){.prod-shell{padding:0 14px 40px}.auth-card,.lesson-card-prod,.section-prod{padding:19px}.subject-quiz-grid,.parent-grid-prod{grid-template-columns:1fr}.match-row-prod{grid-template-columns:1fr}.classify-row{grid-template-columns:1fr}.lesson-toolbar-prod button{flex:1 1 45%}}
.program-week-prod{margin-top:15px;background:#fff;border:1px solid #e5e8f2;border-radius:20px;padding:16px}.program-week-prod summary{cursor:pointer;font-weight:900;color:#27324d}.program-days-prod{display:grid;grid-template-columns:repeat(5,1fr);gap:9px;margin-top:12px}.program-day-prod{border:1px solid #e2e6ef;background:#fafbff;border-radius:15px;padding:12px;text-align:left}.program-day-prod.done{background:#eefaf3;border-color:#c5ead4}.program-day-prod.current{outline:2px solid #7865d7}.program-day-prod:disabled{opacity:.48}.program-day-prod small{display:block;color:#69738d;margin-top:5px}.recovery-panel{margin-top:14px;border-top:1px solid #eceff6;padding-top:14px}
@media(max-width:900px){.program-days-prod{grid-template-columns:1fr}}
/* OT1DO11 responsive logo */
.auth-logo {
  width: clamp(60px, 7vw, 72px);
  aspect-ratio: 1;
  height: auto;

  display: grid;
  place-items: center;

  font-size: clamp(22px, 2.4vw, 30px);
  letter-spacing: -0.08em;
  line-height: 1;
  white-space: nowrap;
}

.prod-brand .brand-mark {
  width: clamp(44px, 4vw, 52px);
  aspect-ratio: 1;
  height: auto;

  display: grid;
  place-items: center;

  font-size: clamp(16px, 1.8vw, 21px);
  letter-spacing: -0.08em;
  line-height: 1;
  white-space: nowrap;
}

/* Family profiles / multi-learner */
.family-account-card .section-heading,.selected-learner-head .section-heading{align-items:center}.learners-strip{display:flex;gap:10px;overflow-x:auto;padding:4px 0 6px}.learner-card{min-width:190px;border:1px solid #e1e5ef;background:#fafbff;border-radius:18px;padding:12px 14px;display:flex;align-items:center;gap:10px;text-align:left}.learner-card.selected{background:#f3f0ff;border-color:#8d7de6;box-shadow:0 0 0 2px #eeeaff inset}.learner-avatar{width:40px;height:40px;border-radius:14px;background:#ece8ff;color:#5f49c8;display:grid;place-items:center;font-weight:900;font-size:18px;flex:0 0 40px}.learner-card-copy{display:flex;flex-direction:column;min-width:0}.learner-card-copy b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.learner-card-copy small{color:#69738d;margin-top:4px}.learner-actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}.danger-btn{color:#a33b3b;background:#fff1f1;border-color:#f0cccc}.deleted-learners-list{display:grid;gap:10px}.learner-editor{max-height:min(820px,90vh);overflow:auto}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}.selected-learner-head{padding-top:20px;padding-bottom:20px}
@media(max-width:700px){.family-account-card .section-heading,.selected-learner-head .section-heading{align-items:stretch;flex-direction:column;gap:12px}.learner-actions{justify-content:stretch}.learner-actions button{flex:1}.learners-strip{display:grid;grid-template-columns:1fr;overflow:visible}.learner-card{width:100%}}

/* Public pricing + universal learner onboarding */
.public-pricing{
  margin:18px 0 22px;
  padding:18px;
  border:1px solid var(--line);
  border-radius:20px;
  background:#fff;
}
.public-price-main{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  margin-bottom:14px;
}
.public-price-main span{
  font-size:28px;
  font-weight:900;
  color:var(--purple);
}
.public-price-main small{color:var(--muted);font-weight:700}
.public-price-options{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
}
.public-price-options>div{
  padding:12px 14px;
  border-radius:15px;
  background:#f7f5ff;
  border:1px solid #e5e0ff;
}
.public-price-options b,.public-price-options small{display:block}
.public-price-options small{margin-top:4px;color:var(--muted);line-height:1.4}
.public-pricing p{margin:12px 0 0;color:var(--muted);font-size:13px}
.learning-mode-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
  margin-top:8px;
}
.learning-mode-card{margin:0}
.subject-picker{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:9px 14px;
  margin-top:10px;
}
.subject-picker label{
  display:flex;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border:1px solid var(--line);
  border-radius:13px;
  background:#fff;
  font-size:14px;
}
.subject-picker input{accent-color:var(--purple)}
@media(max-width:620px){
  .public-price-main{display:block}
  .public-price-main small{display:block;margin-top:4px}
  .public-price-options,.learning-mode-grid,.subject-picker{grid-template-columns:1fr}
}

/* Beta availability + scalable learning choices */
.beta-badge{
  display:inline-flex;
  align-items:center;
  margin-left:6px;
  padding:3px 7px;
  border-radius:999px;
  background:#ede9fe;
  border:1px solid #d8d0ff;
  color:#6553c7;
  font-size:10px;
  font-weight:900;
  letter-spacing:.08em;
  vertical-align:middle;
}
.availability-preview{
  margin:18px 0 22px;
  padding:18px;
  border:1px solid var(--line);
  border-radius:20px;
  background:#fbfbff;
}
.availability-head{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:14px;
  margin-bottom:14px;
}
.availability-head h2{margin:3px 0 0;font-size:20px}
.availability-mosaic{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:10px;
}
.availability-tile{
  min-height:88px;
  padding:12px 13px;
  border-radius:16px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:3px;
  border:1px solid var(--line);
}
.availability-tile.available{
  background:#effcf4;
  border-color:#cdebd8;
}
.availability-tile.available>span{color:#278a51;font-weight:900}
.availability-tile.planned{
  background:#f3f4f7;
  border-color:#e2e4e9;
  color:#858b98;
}
.availability-tile.planned>span{
  align-self:flex-start;
  padding:2px 7px;
  border-radius:999px;
  background:#e6e8ed;
  font-size:10px;
  font-weight:800;
  text-transform:uppercase;
}
.availability-tile b,.availability-tile small{display:block}
.availability-tile small{opacity:.8}
.availability-more{margin-top:14px}
.roadmap-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px;
}
.roadmap-card{
  padding:14px;
  border-radius:15px;
  border:1px solid var(--line);
}
.roadmap-card.available{background:#f4fff7;border-color:#d5ecdd}
.roadmap-card.planned{background:#f5f6f8;color:#6d7380}
.roadmap-card p{margin:6px 0 0;font-size:13px;line-height:1.45}
.beta-note{
  margin:12px 0 0;
  padding:11px 13px;
  border-radius:13px;
  background:#f4f1ff;
  color:#665e7c;
  font-size:13px;
}
.learning-mode-grid.three-modes{grid-template-columns:repeat(3,minmax(0,1fr))}
.subject-soon,.course-soon{
  opacity:.55;
  background:#f3f4f6!important;
  color:#737987;
}
.subject-soon em,.mini-route em{
  margin-left:auto;
  font-size:10px;
  font-style:normal;
  font-weight:800;
  color:#8a90a0;
}
.study-route-options{
  margin-top:14px;
  padding:13px;
  border-radius:15px;
  background:#f8f8fc;
  border:1px solid var(--line);
  display:grid;
  gap:8px;
}
.study-route-options>span{font-size:13px;font-weight:800;color:var(--muted)}
.mini-route{
  display:flex;
  align-items:center;
  gap:8px;
  padding:9px 10px;
  border-radius:11px;
  background:#fff;
  border:1px solid var(--line);
  font-size:13px;
}
.mini-route.disabled{opacity:.55;background:#f3f4f6}
.language-course-picker{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:9px;
  margin-top:10px;
}
.language-course-picker label{
  display:grid;
  grid-template-columns:auto 1fr;
  column-gap:8px;
  row-gap:2px;
  padding:11px 12px;
  border:1px solid var(--line);
  border-radius:13px;
  background:#fff;
}
.language-course-picker input{grid-row:1 / span 2;align-self:center;accent-color:var(--purple)}
.language-course-picker small{color:var(--muted)}
@media(max-width:700px){
  .availability-head{flex-direction:column}
  .availability-mosaic,.roadmap-grid,.learning-mode-grid.three-modes,.language-course-picker{grid-template-columns:1fr}
}

/* RKI independent-course add-on */
.rki-addon-card{border:1px solid var(--line);border-radius:18px;padding:16px;background:#fbfaff;display:grid;grid-template-columns:1fr auto auto;gap:12px 18px;align-items:center}.rki-addon-card>div{display:flex;flex-direction:column;gap:4px}.rki-addon-card small{color:var(--muted);line-height:1.45}.rki-addon-card label{display:flex;align-items:center;gap:7px;font-size:13px;font-weight:700;white-space:nowrap}.rki-addon-card input{accent-color:var(--purple)}@media(max-width:850px){.rki-addon-card{grid-template-columns:1fr}.rki-addon-card label{white-space:normal}}

.beta-tester-cta{display:flex;gap:18px;align-items:center;justify-content:space-between;margin:18px 0;padding:18px;border:1px solid var(--line,#e1e5ef);border-radius:18px;background:var(--surface,#fff)}
.beta-tester-cta div{display:grid;gap:4px}.beta-tester-cta small{color:var(--muted,#667085);max-width:680px}@media(max-width:720px){.beta-tester-cta{align-items:stretch;flex-direction:column}}

/* Standalone RKI course: no school calendar/weeks. */
.rki-course-card,.rki-diagnostic{grid-column:1/-1;border:1px solid var(--line);border-radius:20px;background:#fff;padding:22px;display:flex;flex-direction:column;gap:14px}.rki-course-card b{font-size:22px}.rki-course-card small{font-size:16px;color:var(--muted)}.rki-question{border:1px solid var(--line);border-radius:16px;padding:16px;display:grid;gap:10px}.rki-question legend{font-weight:800;padding:0 6px}.rki-question label{display:block;padding:8px 10px;border-radius:10px;background:var(--soft,#f7f7fb)}

/* ===== Independent RKI course ===== */
.rki-lesson-full{width:100%;display:grid;gap:22px}
.rki-lesson-head{display:flex;justify-content:space-between;gap:24px;align-items:flex-start}
.rki-lesson-head h2{margin:6px 0 10px;font-size:clamp(28px,3vw,42px)}
.rki-lesson-head p{max-width:900px;margin:0;color:var(--muted,#667085);line-height:1.55}
.rki-lesson-count{min-width:88px;height:88px;border-radius:24px;background:#f1efff;color:#5d4ce8;display:grid;place-items:center;font-weight:900;font-size:22px}
.rki-info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.rki-info-grid>div{padding:16px 18px;border:1px solid #e7e9f2;border-radius:18px;background:#fafbff;display:grid;gap:5px}
.rki-info-grid small{color:#777f93}.rki-info-grid b{font-size:18px}
.rki-block{padding:22px;border:1px solid #e7e9f2;border-radius:22px;background:#fff}
.rki-block h3{margin:0 0 15px;font-size:21px}.rki-block p,.rki-block li{line-height:1.6}
.rki-vocab-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.rki-vocab{border:1px solid #e9eaf3;border-radius:16px;padding:14px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.rki-vocab div{display:grid;gap:3px}.rki-vocab b{font-size:19px}.rki-vocab small{color:#72798b}
.rki-example{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px solid #eef0f6;font-size:18px}.rki-example:last-child{border-bottom:0}
.rki-listen{white-space:nowrap}
.rki-question{border:1px solid #e2e5ee;border-radius:18px;padding:17px;margin:0 0 14px;background:#fbfcff}.rki-question legend{font-weight:800;padding:0 8px;line-height:1.5}.rki-question label{display:flex;align-items:center;gap:9px;padding:9px 6px;border-radius:10px}.rki-question label:hover{background:#f5f4ff}.rki-question.passed{border-color:#a8dfc4;background:#f4fff9}.rki-check-feedback{margin-top:8px;font-weight:800}.rki-check-feedback.ok{color:#19784a}.rki-check-feedback.bad{color:#b33a3a}
.rki-level-tag{display:inline-flex;padding:3px 8px;border-radius:999px;background:#eeeaff;color:#5c4fe0;font-size:12px;margin-right:4px}
.rki-level-strip{display:grid;grid-template-columns:repeat(6,minmax(95px,1fr));gap:10px;margin-bottom:18px}.rki-level-pill{display:grid;padding:13px;border:1px solid #e4e6ef;border-radius:16px;background:#fafbff}.rki-level-pill.active{border-color:#7661ff;background:#f1efff}.rki-level-pill b{font-size:18px}.rki-level-pill small{color:#777f93}
.rki-course-card{width:100%;display:grid;gap:14px}.rki-course-card .learner-actions{margin-top:6px}
@media(max-width:760px){.rki-lesson-head{flex-direction:column}.rki-lesson-count{width:100%;height:auto;padding:13px}.rki-info-grid{grid-template-columns:1fr}.rki-level-strip{grid-template-columns:repeat(3,1fr)}.rki-example,.rki-vocab{align-items:flex-start;flex-direction:column}}

/* Grade 5 mathematics method framework */
.math-method-card,.math-worked-card{background:#f8f9ff;border:1px solid #e2e5f4;border-radius:22px;padding:22px 24px;margin:18px 0}.math-method-card ol{margin:12px 0 0;padding-left:26px}.math-method-card li{margin:10px 0;line-height:1.5}.skill-meta{margin-top:14px;padding:14px 16px;border-radius:16px;background:#eef7f2;color:#33405b}.worked-line{display:flex;gap:14px;align-items:flex-start;padding:12px 0;border-bottom:1px solid #e5e8f3}.worked-line:last-child{border-bottom:0}.worked-line span{display:flex;align-items:center;justify-content:center;min-width:32px;height:32px;border-radius:50%;background:#6e59e8;color:#fff;font-weight:800}.worked-line p{margin:3px 0;line-height:1.5}.math-drill-intro{margin-bottom:18px}.math-drill-list{display:grid;gap:14px;margin-bottom:20px}.math-drill-q{display:flex;gap:14px;align-items:flex-start;background:#f8f9ff;border:1px solid #e1e5f2;border-radius:18px;padding:16px}.math-drill-num{display:flex;align-items:center;justify-content:center;min-width:34px;height:34px;border-radius:50%;background:#eeeaff;color:#5f4bd4;font-weight:800}.math-drill-body{flex:1}.math-drill-body .answer-grid-prod{margin-top:12px}