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transparent);font-size:12px}.grade-button small{opacity:0;transition:opacity .18s,transform .18s;transform:translateY(4px)}.grade-button:hover small,.grade-button:focus-visible small{opacity:1;transform:translateY(0)}.grade-button strong{letter-spacing:-.05em;font-size:34px;font-weight:540}.grade-blush{background:color-mix(in srgb, var(--blush-soft) 88%, white)}.grade-sky{background:color-mix(in srgb, var(--sky-soft) 88%, white)}.grade-violet{background:color-mix(in srgb, var(--violet-soft) 88%, white)}.credibility{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);align-items:stretch;gap:64px;display:grid}.profile-photo{min-height:560px}.profile-photo img{object-fit:cover;width:100%;height:100%}.profile-photo img.profile-portrait-home{object-position:center 40%}.profile-photo img.profile-portrait-about{object-position:center 36%}.credibility-copy{flex-direction:column;justify-content:center;display:flex}.credibility-copy h2{letter-spacing:-.06em;max-width:680px;font-size:clamp(40px,5vw,68px);font-weight:520;line-height:1.02}.credibility-copy>p{max-width:650px;color:var(--muted);font-size:18px;line-height:1.65}.proof-list{grid-template-columns:1fr 1fr;gap:16px;margin-top:28px;display:grid}.proof-item{border-top:1px solid var(--line);padding:22px 0}.proof-item strong{margin-bottom:8px;font-size:18px;display:block}.proof-item span{color:var(--muted);line-height:1.5}.home-offerings{grid-template-columns:1.2fr .8fr;gap:18px;display:grid}.offering-feature{background:var(--violet-soft);grid-row:span 2;min-height:510px;padding:42px}.offering-mini{min-height:246px;padding:30px}.offering-mini.sky{background:var(--sky-soft)}.offering-mini.blush{background:var(--blush-soft)}.offering-feature h3,.offering-mini h3{letter-spacing:-.055em;max-width:460px;font-size:clamp(30px,4vw,52px);font-weight:520;line-height:1.02}.offering-feature p,.offering-mini p{max-width:520px;color:var(--muted);line-height:1.6}.card-bottom{margin-top:auto}.price{margin:24px 0 18px;font-size:20px;font-weight:680;display:block}.offerings-grid{grid-template-columns:repeat(12,1fr);gap:18px;display:grid}.offering-card{flex-direction:column;grid-column:span 6;min-height:560px;padding:34px;display:flex}.offering-card:first-child{background:var(--blush-soft);grid-column:span 5}.offering-card:nth-child(2){background:var(--sky-soft);grid-column:span 7}.offering-card:nth-child(3){background:var(--violet-soft);grid-column:4/span 6}.offering-card h2{letter-spacing:-.05em;margin-bottom:14px;font-size:36px;font-weight:540}.offering-card>p{color:var(--muted);line-height:1.6}.offering-meta{color:var(--muted);margin-bottom:22px;font-size:14px}.offering-details{grid-template-columns:1fr 1fr;gap:24px;margin-block:28px;display:grid}.offering-details h3{font-size:15px}.offering-details ul{color:var(--muted);margin:0;padding-left:20px;line-height:1.7}.blog-grid{grid-template-rows:auto auto;grid-template-columns:1.25fr .75fr;gap:18px;display:grid}.blog-card{flex-direction:column;justify-content:space-between;min-height:270px;padding:32px;display:flex}.blog-card:first-child{background:var(--lime-soft);grid-row:span 2;min-height:558px}.blog-card:nth-child(2){background:var(--blush-soft)}.blog-card:nth-child(3){background:var(--sky-soft)}.blog-card h2,.blog-card h3{letter-spacing:-.05em;max-width:520px;font-size:clamp(26px,3vw,48px);font-weight:540;line-height:1.06}.blog-card p{max-width:540px;color:var(--muted);line-height:1.55}.blog-meta{color:var(--muted);justify-content:space-between;gap:20px;font-size:13px;display:flex}.blog-empty{border:1px solid var(--line);border-radius:var(--radius-feature);background:var(--surface);padding:60px}.blog-empty h2{letter-spacing:-.045em;margin-bottom:12px;font-size:38px}.blog-empty p{color:var(--muted);margin:0}.article-page{max-width:820px}.article-back{color:var(--sky-strong);margin-bottom:42px;font-size:14px;font-weight:700;display:inline-block}.article-page header{border-bottom:1px solid var(--line);padding-bottom:36px}.article-page header h1{letter-spacing:-.065em;margin:20px 0;font-size:clamp(44px,7vw,76px);font-weight:530;line-height:1}.article-page header>p{max-width:700px;color:var(--muted);margin:0;font-size:19px;line-height:1.6}.article-body{gap:22px;padding-block:48px;display:grid}.article-body p{color:#3e4352;margin:0;font-size:18px;line-height:1.8}.article-page>footer{background:var(--sky-soft);border-radius:18px;justify-content:space-between;align-items:center;gap:24px;padding:26px;display:flex}.article-page>footer p{margin:0;font-weight:680}.blog-editor{min-height:760px}.site-footer{border-top:1px solid var(--line);padding-block:58px}.footer-grid{grid-template-columns:1.4fr .7fr .9fr;gap:48px;display:grid}.footer-grid p{max-width:420px;color:var(--muted);margin:18px 0 0;line-height:1.55}.footer-links,.footer-contact{flex-direction:column;align-items:flex-start;gap:12px;font-size:14px;display:flex}.footer-contact p{color:var(--ink);margin:0 0 4px;font-weight:650}.privacy-page{max-width:1180px}.privacy-page .page-heading small{color:var(--muted);margin-top:22px;display:block}.privacy-layout{grid-template-columns:minmax(240px,.68fr) minmax(0,1.5fr);align-items:start;gap:64px;display:grid}.privacy-summary{top:calc(var(--header-height) + 28px);border:1px solid var(--line);border-radius:var(--radius-card);background:var(--sky-soft);padding:28px;position:sticky}.privacy-summary strong{margin-bottom:16px;font-size:18px;display:block}.privacy-summary ul{color:var(--muted);gap:12px;margin:0;padding-left:20px;line-height:1.6;display:grid}.privacy-content{gap:0;display:grid}.privacy-content section{border-bottom:1px solid var(--line);margin-bottom:34px;padding:0 0 34px}.privacy-content h2{letter-spacing:-.04em;margin-bottom:14px;font-size:clamp(24px,2.4vw,34px)}.privacy-content p{color:#3e4352;margin:0;font-size:17px;line-height:1.8}.privacy-content a{color:var(--sky-strong);text-underline-offset:4px;font-weight:650;text-decoration:underline}.privacy-contact{border-radius:var(--radius-card);background:var(--violet-soft);border:0!important;padding:28px!important}.privacy-back{margin-top:24px;display:inline-block}.login-page{min-height:calc(100dvh - var(--header-height));place-items:center;display:grid}.login-card{background:var(--surface);grid-template-columns:1fr 1fr;width:100%;display:grid}.login-intro{background:linear-gradient(145deg, var(--violet-soft), var(--sky-soft));padding:48px}.login-intro span{color:var(--muted);font-size:14px;font-weight:650}.login-intro h1{letter-spacing:-.065em;margin:48px 0 20px;font-size:clamp(44px,6vw,68px);font-weight:520}.login-intro p{max-width:420px;color:var(--muted);line-height:1.6}.login-form{flex-direction:column;justify-content:center;gap:22px;padding:48px;display:flex}.field{gap:8px;display:grid}.field label{font-size:14px;font-weight:650}.field input,.field select,.vocab-game-card input{border:1px solid var(--line);border-radius:var(--radius-input);background:var(--canvas);width:100%;min-height:48px;color:var(--ink);padding:0 14px;transition:border-color .16s,background-color .16s,box-shadow .16s}.field input::placeholder,.vocab-game-card input::placeholder{color:color-mix(in srgb, var(--muted) 88%, transparent)}.field input:focus,.field select:focus,.vocab-game-card input:focus{border-color:var(--sky-strong);outline:3px solid color-mix(in srgb, var(--sky) 42%, transparent)}:is(.field input:user-invalid,.field select:user-invalid,.field textarea:user-invalid){border-color:color-mix(in srgb, var(--danger) 62%, var(--line));background:var(--blush-soft)}.field small{color:var(--muted);font-size:12px;line-height:1.45}.form-error{color:var(--danger);margin:-6px 0 0;font-size:14px;line-height:1.4}.login-note{color:var(--muted);margin:0;font-size:13px;line-height:1.5}.dashboard-shell{min-height:calc(100dvh - var(--header-height));background:var(--canvas);grid-template-columns:260px minmax(0,1fr);display:grid}.grade-sidebar{border-right:1px solid var(--line);background:var(--surface);padding:26px 18px}.student-summary{border-bottom:1px solid var(--line);align-items:center;gap:12px;padding:0 8px 24px;display:flex}.student-avatar{background:var(--violet-soft);border-radius:50%;flex:none;place-items:center;width:42px;height:42px;font-size:12px;font-weight:750;display:grid}.student-summary strong,.student-summary small{display:block}.student-summary strong{font-size:14px}.student-summary small{color:var(--muted);margin-top:3px;font-size:11px}.sidebar-label{color:var(--muted);margin:24px 8px 10px;font-size:12px;font-weight:680}.sidebar-grades{gap:4px;display:grid}.sidebar-grades button{min-height:42px;color:var(--muted);cursor:pointer;text-align:left;background:0 0;border:0;border-radius:10px;justify-content:space-between;align-items:center;padding:0 12px;display:flex}.sidebar-grades button:hover{background:var(--sky-soft);color:var(--ink)}.sidebar-grades button.active{background:var(--ink);color:var(--canvas)}.sidebar-grades button small{opacity:.7;font-size:10px}.sidebar-grades button:disabled{cursor:not-allowed;opacity:.48}.sidebar-grades button:disabled:hover{color:var(--muted);background:0 0}.student-logout{border:1px solid var(--line);width:100%;color:var(--muted);cursor:pointer;text-align:left;background:0 0;border-radius:10px;margin-top:18px;padding:11px 12px;font-size:12px;font-weight:680}.student-logout:hover{border-color:var(--sky-strong);color:var(--ink)}.learning-area{min-width:0;padding:34px clamp(24px,5vw,72px) 80px}.learning-header{justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:30px;display:flex}.learning-header p{color:var(--muted);margin-bottom:8px;font-size:13px;font-weight:650}.learning-header h1{letter-spacing:-.06em;margin:0;font-size:clamp(36px,4vw,58px);font-weight:540}.progress-summary{color:var(--muted);align-items:baseline;gap:8px;font-size:13px;display:flex}.progress-summary strong{color:var(--ink);font-size:24px}.progress-save-error{color:#7d3128;background:#fff4f1;border:1px solid #d9a9a1;border-radius:12px;margin:0 0 16px;padding:10px 14px;font-size:13px}.lesson-picker{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);grid-template-columns:auto minmax(220px,420px) minmax(220px,1fr);align-items:center;gap:14px;margin-bottom:18px;padding:14px 16px;display:grid}.lesson-picker label{font-size:12px;font-weight:700}.lesson-picker select{border:1px solid var(--line);background:var(--canvas);min-height:42px;color:var(--ink);border-radius:10px;padding:0 12px}.lesson-picker>span{color:var(--muted);font-size:12px;line-height:1.45}.lesson-tabs{grid-template-columns:repeat(5,minmax(130px,1fr));gap:8px;margin-bottom:26px;padding-bottom:5px;display:grid;overflow-x:auto}.lesson-tabs button{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);min-height:66px;color:var(--muted);cursor:pointer;text-align:left;white-space:nowrap;align-items:center;gap:10px;padding:10px 14px;display:flex}.lesson-tabs button span{background:var(--canvas);width:30px;height:30px;color:var(--ink);font-family:var(--font-geist-mono), monospace;border-radius:9px;place-items:center;font-size:10px;display:grid}.lesson-tabs button:hover{border-color:var(--sky-strong);color:var(--ink)}.lesson-tabs button.active{background:var(--sky-soft);color:var(--ink);border-color:#0000}.lesson-tabs button.active span{background:var(--sky);color:#102435}.lesson-tabs button:disabled{cursor:not-allowed;opacity:.42}.lesson-tabs button:disabled:hover{border-color:var(--line);color:var(--muted)}.lesson-content{border:1px solid var(--line);border-radius:var(--radius-feature);background:var(--surface);min-height:620px;box-shadow:var(--shadow);padding:clamp(24px,4vw,48px)}.lesson-content:focus{outline:none}.lesson-empty-state{align-content:center;justify-items:start;min-height:520px;display:grid}.lesson-empty-state>p{color:var(--sky-strong);margin-bottom:14px;font-size:13px;font-weight:700}.lesson-empty-state h2{letter-spacing:-.055em;max-width:700px;margin-bottom:18px;font-size:clamp(36px,5vw,60px);font-weight:540;line-height:1.03}.lesson-empty-state>span{max-width:620px;color:var(--muted);font-size:17px;line-height:1.55}.lesson-intro{max-width:740px;margin-bottom:34px}.lesson-intro p{color:var(--sky-strong);margin-bottom:10px;font-size:13px;font-weight:700}.lesson-intro h2{letter-spacing:-.055em;margin-bottom:12px;font-size:clamp(32px,4vw,52px);font-weight:540;line-height:1.03}.lesson-intro span{color:var(--muted);line-height:1.55}.video-frame{aspect-ratio:16/9;background:#11131a;border-radius:22px;width:100%;position:relative;overflow:hidden}.video-frame iframe,.video-frame video{border:0;width:100%;height:100%}.video-frame video{object-fit:contain}.resource-note{grid-template-columns:160px 1fr;gap:20px;padding:24px 0 0;display:grid}.resource-note p{color:var(--muted);margin:0 0 7px}.document-viewer{border:1px solid var(--line);background:var(--canvas);border-radius:22px;width:100%;height:min(680px,72dvh);overflow:hidden}.document-viewer iframe{border:0;width:100%;height:100%}.document-actions{justify-content:flex-end;gap:10px;margin-top:16px;display:flex}.slide-viewer{border:1px solid var(--line);border-radius:22px;overflow:hidden}.slide-stage{background:linear-gradient(145deg, var(--violet-soft), var(--sky-soft));grid-template-columns:80px 1fr;min-height:420px;padding:34px;display:grid}.slide-stage>span{font-family:var(--font-geist-mono), monospace;color:var(--muted)}.slide-stage>div{align-self:center;max-width:700px}.slide-stage h3{letter-spacing:-.06em;margin-bottom:18px;font-size:clamp(38px,5vw,66px);font-weight:520;line-height:1}.slide-stage p{max-width:620px;color:var(--muted);margin:0;font-size:20px;line-height:1.6}.slide-controls{background:var(--canvas);justify-content:space-between;align-items:center;gap:16px;padding:16px;display:flex}.slide-controls>span{color:var(--muted);font-size:13px}.button:disabled{cursor:not-allowed;opacity:.48;transform:none}.theory-article{max-width:900px}.theory-block{border-top:1px solid var(--line);padding-block:30px}.theory-block h3{letter-spacing:-.035em;margin-bottom:12px;font-size:24px}.theory-block>p{max-width:720px;color:var(--muted);font-size:17px;line-height:1.75}.theory-copy{border-top:1px solid var(--line);gap:18px;padding-block:28px;display:grid}.theory-copy p{max-width:760px;color:var(--muted);margin:0;font-size:17px;line-height:1.75}.example-grid{grid-template-columns:1fr 1fr;gap:14px;margin-top:22px;display:grid}.example-grid blockquote{border-radius:var(--radius-card);background:var(--sky-soft);margin:0;padding:22px;font-size:16px;line-height:1.55}.practice-bridge{background:var(--lime-soft);border-radius:22px;justify-content:space-between;align-items:center;gap:28px;margin-top:28px;padding:28px;display:flex}.practice-bridge span,.practice-bridge strong{display:block}.practice-bridge span{color:var(--muted);margin-bottom:6px;font-size:13px}.practice-bridge strong{font-size:19px}.quiz-card{max-width:820px}.quiz-stack{gap:28px;display:grid}.quiz-card fieldset{border:0;gap:12px;margin:0 0 22px;padding:0;display:grid}.quiz-stack fieldset{border-bottom:1px solid var(--line);padding-bottom:24px}.quiz-card legend{margin-bottom:20px;font-size:22px;font-weight:650}.quiz-card label{border:1px solid var(--line);border-radius:var(--radius-card);cursor:pointer;align-items:center;gap:14px;padding:18px;display:flex}.quiz-card label:hover,.quiz-card label.selected{border-color:var(--sky-strong);background:var(--sky-soft)}.quiz-card input{width:18px;height:18px;accent-color:var(--sky-strong)}.quiz-result{border-radius:12px;max-width:700px;padding:14px 18px;line-height:1.5}.quiz-result.correct{background:var(--lime-soft);color:var(--success)}.quiz-result.incorrect{background:var(--blush-soft);color:var(--danger)}.quiz-summary{border-radius:14px;align-items:center;gap:16px;padding:18px;display:flex}.quiz-summary strong{font-size:26px}.quiz-summary.passed{background:var(--lime-soft);color:var(--success)}.quiz-summary.retry{background:var(--blush-soft);color:var(--danger)}.vocab-layout{grid-template-columns:minmax(0,1fr) 320px;gap:24px;display:grid}.game-switcher{gap:8px;margin-bottom:18px;padding-bottom:4px;display:flex;overflow-x:auto}.game-switcher button{border:1px solid var(--line);background:var(--surface);min-height:42px;color:var(--muted);cursor:pointer;white-space:nowrap;border-radius:999px;padding:0 16px}.game-switcher button.active{border-color:var(--ink);background:var(--ink);color:var(--canvas)}.flashcard-wrap{gap:16px;display:grid}.flashcard{background:linear-gradient(145deg, var(--violet-soft), var(--blush-soft));min-height:360px;color:var(--ink);cursor:pointer;text-align:center;border:0;border-radius:24px;flex-direction:column;justify-content:center;align-items:center;gap:14px;padding:34px;transition:transform .26s cubic-bezier(.16,1,.3,1);display:flex;box-shadow:inset 0 1px #fff9}.flashcard:hover{transform:translateY(-3px)}.flashcard.flipped{background:linear-gradient(145deg, var(--lime-soft), var(--sky-soft))}.flashcard>span,.flashcard>small{color:var(--muted);font-size:12px}.flashcard strong{letter-spacing:-.055em;max-width:540px;font-size:clamp(36px,5vw,62px);font-weight:540}.flashcard em{color:var(--muted);font-size:17px;font-style:normal}.flashcard p{max-width:500px;color:var(--muted);font-size:17px;line-height:1.5}.flashcard img{object-fit:cover;border-radius:18px;width:116px;height:116px}.flashcard-controls{justify-content:flex-end;gap:10px;display:flex}.vocab-game-card{background:var(--sky-soft);border-radius:24px;align-content:center;gap:12px;min-height:360px;padding:clamp(24px,5vw,48px);display:grid}.vocab-game-card>p,.vocab-game-card>label{margin:0 0 14px;font-size:22px;font-weight:600;line-height:1.5}.vocab-game-card>button:not(.button){border:1px solid var(--line);background:var(--surface);min-height:48px;color:var(--ink);cursor:pointer;text-align:left;border-radius:12px;padding:0 15px}.vocab-game-card>button:not(.button):hover,.vocab-game-card>button.selected{border-color:var(--sky-strong)}.game-start,.game-result{justify-items:start}.game-progress{color:var(--muted);justify-content:space-between;align-items:center;margin-bottom:12px;font-size:12px;display:flex}.game-progress strong{color:var(--ink);font-family:var(--font-geist-mono), monospace}.game-result>span{color:var(--muted);font-size:13px;font-weight:680}.game-result>strong{color:var(--success);font-size:18px}.game-result.perfect{background:var(--lime-soft)}.game-result.retry{background:var(--blush-soft)}.answer-good,.answer-bad{font-size:14px;font-weight:680}.answer-good{color:var(--success)}.answer-bad{color:var(--danger)}.leaderboard{border:1px solid var(--line);background:var(--canvas);border-radius:22px;padding:24px}.leaderboard>div p{color:var(--muted);margin-bottom:7px;font-size:12px}.leaderboard h3{letter-spacing:-.04em;margin-bottom:24px;font-size:22px}.leaderboard ol{gap:8px;margin:0;padding:0;list-style:none;display:grid}.leaderboard li{background:var(--surface);border-radius:12px;grid-template-columns:28px 1fr auto;align-items:center;gap:8px;min-height:48px;padding:0 12px;font-size:13px;display:grid}.leaderboard li.you{background:var(--lime-soft)}.leaderboard li>span{color:var(--muted);font-family:var(--font-geist-mono), monospace}.leaderboard li small{color:var(--muted)}.leaderboard-note{color:var(--muted);margin:18px 0 0;font-size:11px;line-height:1.5}.leaderboard-empty{background:var(--surface);border-radius:12px;gap:8px;padding:18px;display:grid}.leaderboard-empty strong{font-size:14px}.leaderboard-empty span{color:var(--muted);font-size:12px;line-height:1.45}.leaderboard-loading{background:linear-gradient(90deg,#eef1f6 25%,#f8fafc 50%,#eef1f6 75%) 0 0/200% 100%;border-radius:12px;height:152px;animation:1.4s linear infinite leaderboard-shimmer}@keyframes leaderboard-shimmer{to{background-position:-200% 0}}.access-message{min-height:calc(100dvh - var(--header-height));padding-top:clamp(90px,16vh,170px)}.access-message p{color:var(--sky-strong);font-size:14px;font-weight:700}.access-message h1{letter-spacing:-.065em;max-width:720px;margin-bottom:20px;font-size:clamp(42px,7vw,72px);font-weight:520;line-height:1}.access-message span{color:var(--muted);font-size:18px}.profile-page{min-height:calc(100dvh - var(--header-height));background:#f4f7fb;padding-block:64px 110px}.profile-page-heading{justify-content:space-between;align-items:flex-end;gap:36px;margin-bottom:34px;display:flex}.profile-page-heading p,.profile-card-heading p{color:var(--sky-strong);margin-bottom:9px;font-size:13px;font-weight:700}.profile-page-heading h1{letter-spacing:-.068em;margin:0;font-size:clamp(48px,7vw,78px);font-weight:520;line-height:.96}.profile-page-heading>span{max-width:300px;color:var(--muted);text-align:right;font-size:14px;line-height:1.55}.profile-settings-grid{grid-template-columns:minmax(260px,.72fr) minmax(420px,1.28fr);align-items:start;gap:18px;display:grid}.profile-card{border:1px solid var(--line);background:var(--surface);border-radius:22px;padding:30px;box-shadow:0 20px 54px #4a5b7b14}.profile-identity-card{grid-row:span 2}.profile-card-heading{border-bottom:1px solid var(--line);padding-bottom:24px}.profile-card-heading h2{letter-spacing:-.045em;margin:0 0 9px;font-size:28px;font-weight:560}.profile-card-heading>span{color:var(--muted);font-size:13px;line-height:1.5;display:block}.profile-avatar-editor{justify-items:start;gap:24px;padding-top:28px;display:grid}.profile-avatar-editor>div{justify-items:start;gap:10px;display:grid}.profile-avatar-editor small{max-width:220px;color:var(--muted);font-size:11px;line-height:1.45}.profile-remove-image{color:var(--danger);cursor:pointer;background:0 0;border:0;padding:0;font-size:12px;font-weight:650}.profile-remove-image:hover{text-underline-offset:4px;text-decoration:underline}.profile-form{gap:18px;padding-top:26px;display:grid}.profile-form-row{grid-template-columns:1fr 1fr;gap:12px;display:grid}.profile-form input[readonly]{color:var(--muted);cursor:not-allowed;background:#f1f3f7}.profile-form .button{width:fit-content}.profile-notice{border-radius:11px;margin:0;padding:11px 13px;font-size:12px;line-height:1.45}.profile-notice.success{background:var(--sky-soft);color:#185c8c}.profile-notice.error{background:var(--blush-soft);color:var(--danger)}.admin-page{min-height:calc(100dvh - var(--header-height));background:#f4f7fb;padding-block:54px 100px}.admin-nav{border:1px solid var(--line);background:var(--surface);border-radius:999px;gap:5px;width:fit-content;margin-bottom:36px;padding:5px;display:flex}.admin-nav a{color:var(--muted);border-radius:999px;padding:9px 15px;font-size:13px;font-weight:680}.admin-nav a[aria-current=page]{background:var(--ink);color:var(--canvas)}.admin-page-heading{justify-content:space-between;align-items:flex-end;gap:36px;margin-bottom:34px;display:flex}.admin-page-heading p,.admin-panel-heading>p,.admin-list-heading p{color:var(--sky-strong);margin-bottom:10px;font-size:13px;font-weight:700}.admin-page-heading h1{letter-spacing:-.065em;max-width:820px;margin:0;font-size:clamp(42px,6vw,68px);font-weight:520;line-height:1}.admin-page-heading>span{max-width:260px;color:var(--muted);text-align:right;font-size:14px;line-height:1.5}.admin-workspace-toolbar{gap:14px;margin-bottom:18px;display:grid}.admin-workspace-toolbar .admin-nav{margin-bottom:0}.admin-workspace-heading{justify-content:space-between;align-items:end;gap:28px;display:flex}.admin-workspace-heading p{color:var(--sky-strong);margin:0 0 5px;font-size:11px;font-weight:720}.admin-workspace-heading h1{letter-spacing:-.05em;margin:0;font-size:clamp(28px,3vw,38px);font-weight:560;line-height:1}.admin-workspace-heading>span{max-width:420px;color:var(--muted);text-align:right;font-size:12px;line-height:1.45}.admin-workspace-loading{grid-template-rows:auto minmax(0,1fr);gap:16px;min-height:420px;display:grid}.workspace-skeleton-metrics{border:1px solid var(--line);background:var(--line);border-radius:16px;grid-template-columns:repeat(3,1fr);gap:1px;height:70px;display:grid;overflow:hidden}.workspace-skeleton-metrics span,.workspace-skeleton-panels span{background:linear-gradient(100deg,#edf1f6 20%,#f8fafc 42%,#edf1f6 64%) 0 0/260% 100%;animation:1.5s ease-in-out infinite skeleton-sweep;display:block}.workspace-skeleton-panels{grid-template-columns:minmax(280px,.72fr) minmax(520px,1.28fr);gap:16px;min-height:330px;display:grid}.workspace-skeleton-panels>div{border:1px solid var(--line);background:var(--surface);border-radius:22px;align-content:start;gap:14px;padding:24px;display:grid}.workspace-skeleton-panels span{border-radius:12px;height:48px}.workspace-skeleton-panels span:first-child{width:58%;height:28px}.workspace-skeleton-panels>div:last-child span:first-child{width:42%;height:42px}.admin-workspace-error{border:1px solid var(--line);background:var(--surface);text-align:center;border-radius:22px;place-content:center;justify-items:center;gap:12px;min-height:320px;padding:32px;display:grid}.admin-workspace-error strong{font-size:16px}.admin-workspace-error p{max-width:440px;color:var(--muted);margin:0;font-size:13px;line-height:1.5}@keyframes skeleton-sweep{to{background-position:-200% 0}}.admin-metrics{border-block:1px solid var(--line);grid-template-columns:repeat(3,1fr);display:grid}.admin-metrics>div{border-right:1px solid var(--line);gap:4px;padding:24px 28px;display:grid}.admin-metrics>div:last-child{border-right:0}.admin-metrics strong{letter-spacing:-.05em;font-size:34px;font-weight:560}.admin-metrics span{color:var(--muted);font-size:13px}.admin-workspace{grid-template-columns:minmax(330px,.72fr) minmax(520px,1.28fr);gap:18px;margin-top:28px;display:grid}.admin-panel{border:1px solid var(--line);background:var(--surface);border-radius:22px;overflow:hidden;box-shadow:0 20px 54px #4a5b7b14}.admin-create-panel{padding:30px}.admin-panel-heading{margin-bottom:28px}.admin-panel-heading h2{letter-spacing:-.045em;margin-bottom:12px;font-size:30px;font-weight:560}.admin-panel-heading>span{max-width:520px;color:var(--muted);font-size:14px;line-height:1.55;display:block}.admin-student-form{gap:18px;display:grid}.admin-form-row{grid-template-columns:.72fr 1.28fr;gap:12px;display:grid}.admin-form-message{border-radius:12px;margin:0;padding:12px 14px;font-size:13px;line-height:1.45}.admin-form-message.success{background:var(--sky-soft);color:#185c8c}.admin-form-message.error{background:var(--blush-soft);color:var(--danger)}.admin-student-form .button{width:100%;margin-top:2px}.admin-student-panel{min-width:0;padding:30px}.admin-list-heading{justify-content:space-between;align-items:flex-start;gap:24px;display:flex}.admin-list-heading h2{margin:0}.admin-empty-state{border:1px dashed var(--line);text-align:center;border-radius:16px;place-content:center;min-height:260px;padding:40px;display:grid}.admin-empty-state strong{font-size:20px}.admin-empty-state p{max-width:370px;color:var(--muted);margin:10px 0 0;line-height:1.55}.student-account-list{display:grid}.student-account-item{border-top:1px solid var(--line)}.student-account-item::details-content{overflow:hidden}.student-account-row{cursor:pointer;grid-template-columns:42px minmax(150px,1fr) 100px 72px 62px;align-items:center;gap:14px;min-height:76px;list-style:none;display:grid}.student-account-row::-webkit-details-marker{display:none}.student-account-row:hover .student-account-open{color:var(--sky-strong)}.student-account-avatar{background:var(--sky-soft);color:#185c8c;border-radius:12px;place-items:center;width:38px;height:38px;font-size:11px;font-weight:760;display:grid}.student-account-main{min-width:0}.student-account-main strong,.student-account-main span{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.student-account-main strong{margin-bottom:5px;font-size:14px}.student-account-main span,.student-account-grade{color:var(--muted);font-size:12px}.student-account-status{border-radius:999px;justify-self:end;padding:6px 9px;font-size:11px;font-weight:700}.student-account-status.active{background:var(--sky-soft);color:#185c8c}.student-account-status.paused{background:var(--blush-soft);color:var(--danger)}.student-account-open{color:var(--muted);justify-self:end;font-size:11px;font-weight:700}.student-account-item[open] .student-account-open{color:var(--sky-strong)}.student-account-editor{background:#f6f9fc;border-radius:16px;gap:16px;margin-bottom:18px;padding:20px;display:grid}.student-edit-form{grid-template-columns:1fr 1.2fr .6fr 1fr auto;align-items:end;gap:10px;display:grid}.student-edit-form .field input,.student-edit-form .field select,.student-password-form .field input{background:var(--surface);min-height:42px}.student-edit-form .button,.student-password-form .button,.student-account-danger-actions .button{min-height:42px;padding-inline:16px;font-size:12px}.student-password-form{grid-template-columns:minmax(220px,1fr) auto;align-items:end;gap:10px;display:grid}.student-account-danger-actions{border-top:1px solid var(--line);justify-content:flex-end;gap:8px;padding-top:4px;display:flex}.button-danger{border-color:color-mix(in srgb, var(--danger) 32%, transparent);background:var(--blush-soft);color:var(--danger)}.admin-list-message{margin-bottom:14px}.curriculum-workspace{grid-template-columns:300px minmax(0,1fr);align-items:start;gap:18px;margin-top:28px;display:grid}.curriculum-index{top:calc(var(--header-height) + 18px);max-height:calc(100dvh - var(--header-height) - 36px);padding:24px;position:sticky;overflow-y:auto}.curriculum-index-heading{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.curriculum-index-heading h2{margin:0}.curriculum-index-heading .button{min-height:38px;padding-inline:14px;font-size:12px}.curriculum-list{gap:7px;display:grid}.curriculum-list button{width:100%;color:var(--ink);cursor:pointer;text-align:left;background:0 0;border:1px solid #0000;border-radius:13px;gap:4px;padding:14px;display:grid}.curriculum-list button:hover{background:var(--sky-soft)}.curriculum-list button.active{border-color:color-mix(in srgb, var(--sky-strong) 26%, transparent);background:var(--sky-soft)}.curriculum-list span,.curriculum-list small{color:var(--muted);font-size:11px}.curriculum-list strong{font-size:14px;line-height:1.35}.curriculum-editor{padding:30px}.curriculum-editor-heading{justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:24px;display:flex}.curriculum-editor-heading p{color:var(--sky-strong);margin-bottom:8px;font-size:13px;font-weight:700}.curriculum-editor-heading h2{letter-spacing:-.045em;margin:0;font-size:34px;font-weight:560}.curriculum-editor-heading>div:first-child{min-width:0}.curriculum-editor-actions{gap:8px;display:flex}.lesson-status{border-radius:999px;margin-top:10px;padding:5px 9px;font-size:11px;font-weight:720;display:inline-flex}.lesson-status.draft{color:#555d6e;background:#eef1f6}.lesson-status.published{background:var(--lime-soft);color:#466417}.builder-steps{border-bottom:1px solid var(--line);grid-template-columns:repeat(6,minmax(160px,1fr));gap:7px;margin:0 -30px;padding:0 30px 22px;display:grid;overflow-x:auto}.builder-steps button{min-width:160px;color:var(--muted);cursor:pointer;text-align:left;background:0 0;border:1px solid #0000;border-radius:13px;grid-template-columns:24px minmax(0,1fr);gap:2px 8px;padding:11px;display:grid}.builder-steps button:hover{color:var(--ink);background:#f5f8fc}.builder-steps button.active{border-color:color-mix(in srgb, var(--sky-strong) 28%, transparent);background:var(--sky-soft);color:var(--ink)}.builder-steps button>span{color:#545c6c;background:#e9edf3;border-radius:50%;grid-row:span 2;place-items:center;width:24px;height:24px;font-size:11px;font-weight:760;display:grid}.builder-steps button.active>span{background:var(--sky-strong);color:#f8fbff}.builder-steps strong{text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.builder-steps small{text-overflow:ellipsis;white-space:nowrap;font-size:10px;overflow:hidden}.curriculum-section{border:0;border-top:1px solid var(--line);gap:18px;margin:0;padding:28px 0;display:grid}.curriculum-section legend{float:left;letter-spacing:-.025em;width:100%;margin-bottom:18px;padding:0;font-size:18px;font-weight:700}.builder-panel{border-top:0;align-content:start;min-height:580px}.builder-panel legend,.review-panel h3{letter-spacing:-.04em;font-size:26px;font-weight:600}.review-panel h3{margin:0 0 8px}.section-helper{max-width:700px;color:var(--muted);margin:-10px 0 4px;font-size:14px;line-height:1.55}.curriculum-grid{gap:12px;display:grid}.curriculum-grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.curriculum-grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.curriculum-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.curriculum-span-2{grid-column:span 2}.curriculum-span-4{grid-column:span 4}.curriculum-editor textarea{resize:vertical;border:1px solid var(--line);border-radius:var(--radius-input);background:var(--canvas);width:100%;color:var(--ink);font:inherit;padding:13px 14px;line-height:1.55}.curriculum-editor textarea:focus{border-color:var(--sky-strong);outline:3px solid color-mix(in srgb, var(--sky) 42%, transparent)}.site-content-workspace{grid-template-columns:280px minmax(0,1fr);align-items:start;gap:18px;display:grid}.site-content-index{top:calc(var(--header-height) + 18px);padding:24px;position:sticky}.site-content-index-copy h2{letter-spacing:-.035em;margin:0 0 8px;font-size:24px}.site-content-index-copy p{color:var(--muted);margin:0;font-size:13px;line-height:1.5}.site-content-index nav{gap:6px;margin-block:24px;display:grid}.site-content-index nav button{width:100%;color:var(--ink);cursor:pointer;text-align:left;background:0 0;border:1px solid #0000;border-radius:13px;gap:3px;padding:13px 14px;transition:background-color .2s,border-color .2s,transform .2s;display:grid}.site-content-index nav button:hover{background:var(--sky-soft)}.site-content-index nav button:active{transform:translateY(1px)}.site-content-index nav button.active{border-color:color-mix(in srgb, var(--sky-strong) 30%, transparent);background:var(--sky-soft)}.site-content-index nav strong{font-size:14px}.site-content-index nav span{color:var(--muted);font-size:11px;line-height:1.4}.site-preview-link{width:100%}.site-content-editor{min-width:0;padding:30px}.site-content-editor-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:22px;padding-bottom:22px;display:flex}.site-content-editor-heading h2{letter-spacing:-.045em;margin:0 0 5px;font-size:32px;font-weight:580}.site-content-editor-heading p,.site-content-editor-heading>span{color:var(--muted);margin:0;font-size:13px;line-height:1.5}.site-content-editor-heading>span{text-align:right;max-width:250px}.site-editor-form{gap:0;display:grid}.site-editor-section{border:0;border-bottom:1px solid var(--line);gap:18px;margin:0;padding:28px 0;display:grid}.site-editor-section:first-of-type{padding-top:10px}.site-editor-section legend{float:left;letter-spacing:-.025em;width:100%;margin-bottom:18px;padding:0;font-size:18px;font-weight:700}.site-editor-form textarea,.credential-card textarea{resize:vertical;border:1px solid var(--line);border-radius:var(--radius-input);background:var(--canvas);width:100%;color:var(--ink);font:inherit;padding:13px 14px;line-height:1.55}.site-editor-form textarea:focus,.credential-card textarea:focus{border-color:var(--sky-strong);outline:3px solid color-mix(in srgb, var(--sky) 42%, transparent)}.site-proof-editor{gap:12px;display:grid}.site-proof-row{border:1px solid var(--line);background:#f8fafc;border-radius:16px;grid-template-columns:minmax(180px,.65fr) minmax(280px,1.35fr) auto;align-items:end;gap:12px;padding:16px;display:grid}.text-button{min-height:42px;color:var(--sky-strong);font:inherit;cursor:pointer;background:0 0;border:0;padding:8px 4px;font-size:12px;font-weight:700}.text-button.danger,.credential-order .danger{color:var(--danger)}.credential-toolbar{justify-content:space-between;align-items:center;gap:20px;padding:10px 0 22px;display:flex}.credential-toolbar p{color:var(--muted);margin:0;font-size:13px}.credential-list{gap:14px;display:grid}.credential-card{border:1px solid var(--line);background:#f8fafc;border-radius:18px;gap:18px;margin:0;padding:22px;display:grid;position:relative}.credential-card legend{max-width:calc(100% - 210px);padding:0 4px;font-size:16px;font-weight:700}.credential-order{gap:4px;display:flex;position:absolute;top:12px;right:16px}.credential-order button{border:1px solid var(--line);background:var(--surface);min-height:34px;color:var(--muted);font:inherit;cursor:pointer;border-radius:9px;padding:6px 9px;font-size:11px;font-weight:700}.credential-order button:disabled{cursor:not-allowed;opacity:.4}.site-media-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.site-media-card{border:1px solid var(--line);background:#f8fafc;border-radius:18px;align-content:start;gap:15px;padding:18px;display:grid}.site-media-preview{aspect-ratio:16/10;border:1px solid var(--line);background:#eaf1f8;border-radius:14px;overflow:hidden}.site-media-preview.logo{background:var(--surface);place-items:center;display:grid}.site-media-preview img{object-fit:cover;width:100%;height:100%}.site-media-preview.logo img{object-fit:contain;width:54%;height:54%}.site-media-copy h3{margin:0 0 5px;font-size:17px}.site-media-copy p{color:var(--muted);margin:0;font-size:12px;line-height:1.5}.site-media-card input[type=file]{padding:9px;font-size:12px}.site-media-card input[type=range]{width:100%;accent-color:var(--sky-strong)}.focal-controls{grid-template-columns:1fr 1fr;gap:12px;display:grid}.site-media-card>.button{width:100%}.field-error{font-weight:650;color:var(--danger)!important}.media-instructions{border:1px solid color-mix(in srgb, var(--sky-strong) 20%, transparent);background:var(--sky-soft);border-radius:16px;grid-template-columns:minmax(0,1fr) auto;gap:8px 24px;padding:18px;display:grid}.media-instructions strong{font-size:15px}.media-instructions ol{color:var(--muted);grid-column:1;margin:0;padding-left:20px;font-size:13px;line-height:1.7}.media-instructions a{color:#165f92;text-underline-offset:4px;grid-area:1/2/span 2;align-self:center;font-size:13px;font-weight:720;text-decoration:underline}.admin-video-preview{aspect-ratio:16/9;border:1px solid var(--line);background:#12151c;border-radius:16px;width:min(100%,720px);overflow:hidden}.admin-video-preview iframe{border:0;width:100%;height:100%}.media-upload-grid{align-items:end}.upload-field{min-width:0}.upload-dropzone{border:1px dashed color-mix(in srgb, var(--sky-strong) 42%, var(--line));cursor:pointer;background:#f7faff;border-radius:14px;align-items:center;min-height:86px;padding:15px 18px;display:flex;position:relative}.upload-dropzone:hover{border-color:var(--sky-strong);background:var(--sky-soft)}.upload-dropzone.has-file{border-style:solid;border-color:color-mix(in srgb, var(--success) 34%, transparent);background:color-mix(in srgb, var(--lime-soft) 64%, 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