:root{--green:#1f9d68;--green-dark:#137451;--ink:#17232f;--muted:#667085;--bg:#f5f8f6;--card:#fff;--line:#dde7e1;--shadow:0 16px 50px rgba(30,55,43,.12)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg)}button,input,textarea,select{font:inherit}a{color:var(--green-dark)}.hidden{display:none!important}.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:14px clamp(18px,4vw,54px);background:#fff;border-bottom:1px solid var(--line)}.brand{display:flex;gap:11px;align-items:center;text-decoration:none;color:var(--ink)}.brand-mark,.dopi-orb{display:grid;place-items:center;background:var(--green);color:#fff;font-weight:800;border-radius:14px}.brand-mark{width:43px;height:43px;font-size:24px}.brand strong,.brand small{display:block}.brand small{color:var(--muted);font-size:12px;margin-top:1px}.topnav{display:flex;align-items:center;gap:9px}.nav-link,.account-button,.account-menu button{border:0;background:transparent;cursor:pointer;color:var(--ink)}.auth-actions{display:flex;gap:8px}.button{display:inline-flex;align-items:center;justify-content:center;padding:10px 15px;border-radius:10px;border:1px solid transparent;text-decoration:none;font-weight:700;cursor:pointer}.button.primary{background:var(--green);color:#fff}.button.primary:hover{background:var(--green-dark)}.button.ghost{background:#fff;color:var(--green-dark);border-color:#bad8ca}.account-area{position:relative}.account-button{padding:9px 12px;border:1px solid var(--line);border-radius:10px}.account-menu{position:absolute;right:0;top:46px;width:220px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:12px;padding:7px}.account-menu button{width:100%;text-align:left;padding:10px;border-radius:8px}.account-menu button:hover{background:#f2f7f4}.shell{max-width:1180px;margin:auto;padding:44px 24px 100px}.hero{display:grid;grid-template-columns:1.55fr .85fr;gap:35px;align-items:center;min-height:66vh}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.13em;text-transform:uppercase;color:var(--green-dark)}h1{font-size:clamp(34px,5vw,62px);line-height:1.04;margin:12px 0 18px}h2{font-size:clamp(26px,3vw,38px);margin:8px 0 14px}p{line-height:1.65}.hero-copy>p{font-size:18px;max-width:760px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0}.note{color:var(--muted);font-size:14px!important}.dopi-intro,.review-panel,.settings-card,.auth-card{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px;padding:26px}.dopi-orb{width:58px;height:58px;font-size:30px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:20px}.search-field,input,textarea,select{width:100%;border:1px solid #cdd9d2;border-radius:10px;padding:11px 12px;background:#fff}.search-field{max-width:340px}.subject-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:15px}.subject-card{appearance:none;text-align:left;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;cursor:pointer;min-height:190px;transition:.15s}.subject-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#a9cfbb}.subject-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:#e9f7f0;color:var(--green-dark);font-weight:900}.subject-code{display:block;margin-top:18px;color:var(--green-dark);font-size:12px;font-weight:800}.subject-card strong,.subject-card small{display:block}.subject-card strong{font-size:20px;margin:4px 0 8px}.subject-card small{color:var(--muted);line-height:1.45}.subject-reader{background:#fff;border:1px solid var(--line);border-radius:18px;padding:clamp(18px,4vw,36px)}.reader-title{display:flex;gap:16px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:20px}.topic{padding:22px 0;border-bottom:1px solid var(--line)}.topic li{margin:8px 0;line-height:1.55}.example,.practice,.sources{margin-top:14px;padding:15px;border-radius:12px;background:#f3f8f5}.sources a{display:block;margin-top:8px}.text-button{border:0;background:transparent;color:var(--green-dark);font-weight:700;cursor:pointer;margin-bottom:15px}.review-panel{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;align-items:end}.review-panel label,.settings-card label,.auth-card label{display:grid;gap:7px}.switch-row{grid-template-columns:1fr auto!important;align-items:center}.switch-row small{display:block;color:var(--muted);margin-top:4px}.switch-row input{width:22px;height:22px}.settings-card{display:grid;gap:22px;max-width:760px}.status{color:var(--green-dark);font-weight:700}.notice{padding:13px 15px;background:#fff7d6;border:1px solid #eedc8a;border-radius:10px}.auth-page{min-height:100vh;display:grid;place-items:center;padding:20px}.auth-card{width:min(480px,100%)}.auth-card h1{font-size:34px}.auth-card form{display:grid;gap:15px}.back-link{text-decoration:none;font-weight:700}.verify-box{border-top:1px solid var(--line);margin-top:22px;padding-top:20px}.dopi-launcher{position:fixed;right:22px;bottom:22px;z-index:80;border:0;background:var(--green);color:#fff;border-radius:999px;padding:10px 15px;box-shadow:0 12px 34px rgba(14,105,69,.32);cursor:pointer;display:flex;gap:8px;align-items:center}.dopi-launcher span{font-size:22px;font-weight:900}.dopi-panel{position:fixed;right:20px;bottom:82px;z-index:90;width:min(390px,calc(100vw - 28px));height:min(620px,calc(100vh - 110px));background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 24px 80px rgba(0,0,0,.2);display:grid;grid-template-rows:auto 1fr auto auto auto;overflow:hidden}.dopi-header{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;background:var(--green);color:#fff}.dopi-header strong,.dopi-header small{display:block}.dopi-header small{opacity:.85}.dopi-header button{border:0;background:transparent;color:#fff;font-size:26px;cursor:pointer}.dopi-messages{padding:15px;overflow:auto;background:#f7faf8}.msg{max-width:88%;padding:10px 12px;margin:7px 0;border-radius:12px;white-space:pre-wrap;line-height:1.45}.msg.bot,.msg.pending{background:#fff;border:1px solid var(--line)}.msg.user{margin-left:auto;background:#dff4e9}.msg.pending{color:var(--muted);font-style:italic}.quick-actions{display:flex;gap:7px;flex-wrap:wrap;padding:0 12px 9px}.chip{border:1px solid #b8d9c8;background:#fff;color:var(--green-dark);border-radius:999px;padding:7px 10px;cursor:pointer}.dopi-form{display:grid;grid-template-columns:1fr auto;gap:8px;padding:10px;border-top:1px solid var(--line)}.dopi-form textarea{resize:none}.dopi-panel footer{font-size:11px;color:var(--muted);padding:0 12px 10px}@media(max-width:820px){.topbar{align-items:flex-start}.topnav{flex-wrap:wrap;justify-content:flex-end}.nav-link{display:none}.hero{grid-template-columns:1fr}.review-panel{grid-template-columns:1fr}.section-head{align-items:stretch;flex-direction:column}.search-field{max-width:none}}@media(max-width:560px){.auth-actions .ghost{display:none}.brand small{display:none}.shell{padding:28px 15px 100px}.dopi-panel{right:7px;bottom:75px;width:calc(100vw - 14px)}}

.digital-task-layout{display:grid;grid-template-columns:260px 1fr;gap:22px;align-items:start}
.digital-task-filters{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;display:grid;gap:14px}
.digital-task-filters label{font-weight:700}.digital-task-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow);min-height:310px}
.task-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.task-meta span{padding:6px 9px;border-radius:999px;background:#eef6f1;color:var(--green-dark);font-size:12px;font-weight:800}
.digital-task-card h3{font-size:28px;margin:8px 0}.task-prompt{font-size:18px;line-height:1.55;max-width:760px}
.task-options{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:24px}.task-option{padding:15px;text-align:left;background:#fff;border:1px solid #cdd9d2;border-radius:12px;cursor:pointer}.task-option:hover{border-color:var(--green);background:#f5faf7}
.task-input-form{display:flex;gap:10px;max-width:650px;margin-top:24px}.task-input-form input{flex:1}.task-feedback{margin-top:20px;padding:16px;border-radius:14px;background:#f5f8f6;border:1px solid var(--line)}.task-feedback.is-correct{background:#edf8f1;border-color:#b9ddc8}
.task-feedback p{margin:6px 0 14px}.task-progress{font-size:13px;color:var(--muted);white-space:nowrap}
@media(max-width:760px){.digital-task-layout{grid-template-columns:1fr}.task-options{grid-template-columns:1fr}.task-input-form{flex-direction:column}.topnav{flex-wrap:wrap;justify-content:flex-end}.nav-link{font-size:13px}}