:root{--blue:#2563eb;--blue-dark:#1d4ed8;--navy:#182541;--muted:#7a859b;--line:#e9edf4;--bg:#f7f9fc;--purple:#8362cf;--green:#249b72;--orange:#dd9550;--shadow:0 8px 30px #21385b08;font-family:'Nunito',system-ui,-apple-system,sans-serif;color:var(--navy);background:var(--bg);font-synthesis:none;font-size:15px}
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p{font-size:11px;color:var(--muted);margin-top:7px}.chart-panel{padding:28px;background:white;border:1px solid var(--line);border-radius:18px}.chart-sub{font-size:12px;color:var(--muted);margin-top:6px}.chart{display:flex;align-items:flex-end;height:200px;gap:20px;margin:35px 0 0;padding:0 8px}.chart-column{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;height:100%;gap:7px}.chart-bar{background:#e1ebff;width:min(100%,52px);border-radius:7px 7px 3px 3px;min-height:4px;transition:height .4s}.chart-column:last-child .chart-bar{background:var(--blue)}.chart-column>span{font-size:10px;color:#8c9bb1}.chart-column>strong{font-size:11px;font-weight:700;color:#8c9bb1}.progress-lower{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px}.level-line{padding:17px 0;border-bottom:1px solid var(--line)}.level-line:last-child{border:0}.level-line .between{font-size:12px;margin-bottom:12px}.level-line .between strong{font-size:12px}.step-list{display:flex;flex-direction:column;gap:22px;margin-top:22px}.step-row{display:flex;align-items:flex-start;gap:13px}.step-no{background:#eff4ff;color:#668acc;border-radius:8px;width:28px;height:28px;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:900;flex-shrink:0}.step-row strong{font-size:13px;display:block;margin-bottom:3px}.step-row p{font-size:11px;color:var(--muted)}
dialog{padding:0;border:1px solid #e8edf5;border-radius:22px;max-width:min(650px,calc(100vw - 30px));width:650px;max-height:calc(100dvh - 50px);color:var(--navy);box-shadow:0 25px 100px #0c1c422a}dialog::backdrop{background:#14264e55;backdrop-filter:blur(4px)}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:25px 28px 18px;gap:15px}.modal-head h2{font-size:22px}.modal-body{padding:0 28px 28px}.modal-body>p{font-size:13px;color:var(--muted);margin-bottom:20px}.language-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:18px}.language-option{border:1px solid var(--line);border-radius:12px;display:flex;align-items:center;padding:14px;gap:12px;text-align:left}.language-option:hover{border-color:#aac3f5;background:#f8faff}.language-option.selected{background:#eff4ff;border-color:#98b6f2}.language-option strong{display:block;font-size:12px}.language-option small{display:block;color:#96a3b8;font-size:10px;margin-top:3px}.language-option .icon{margin-left:auto;width:17px;height:17px;color:var(--blue)}.settings-label{font-weight:800;font-size:13px;display:block;margin:20px 0 10px}.goal-options{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.goal-option{border:1px solid var(--line);border-radius:12px;padding:17px 8px}.goal-option.active{border-color:#a0baf0;background:#eef4ff}.goal-option strong{font-size:19px;display:block}.goal-option small{color:#899ab5;font-size:11px;display:block;margin-top:5px}.settings-note{font-size:12px!important;line-height:1.7;margin:20px 0!important}.danger-link{font-size:12px;color:#ad6570;padding:10px 0}.detail-word{text-align:center;padding:20px 0 30px}.detail-word h3{font-size:40px;margin:14px 0 8px;overflow-wrap:anywhere}.detail-word p{font-size:18px;color:#8292ad}.detail-word .row{justify-content:center;margin-top:20px}.detail-note{font-size:12px;color:var(--muted);background:#f7f9fc;border-radius:11px;padding:15px;line-height:1.7;margin-bottom:20px}.word-details-meta{display:flex;gap:8px;justify-content:center;margin-bottom:20px}#toast{position:fixed;bottom:25px;left:calc(50% + 112px);transform:translate(-50%,20px);z-index:100;background:var(--navy);color:white;border-radius:12px;box-shadow:0 8px 22px #18254120;padding:13px 20px;font-size:13px;max-width:min(520px,90vw);opacity:0;pointer-events:none;transition:.2s;text-align:center}#toast.visible{opacity:1;transform:translate(-50%,0)}
.session-wrap{max-width:700px;margin:0 auto}.session-top{display:flex;align-items:center;gap:18px;margin-bottom:24px}.session-top .icon-btn{background:white;border:1px solid var(--line);width:40px;height:40px}.session-track{height:7px;border-radius:5px;background:#e4eaf5;flex:1;overflow:hidden}.session-track>span{height:100%;display:block;background:var(--blue);border-radius:5px;transition:width .25s}.session-count{font-size:12px;font-weight:800;color:#8c9bb1}.session-heading{text-align:center;margin-bottom:25px}.session-heading h1{font-size:25px}.session-heading p{font-size:12px;color:var(--muted);margin-top:7px}.study-card{background:white;border:1px solid #e1e8f4;border-radius:22px;min-height:330px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:30px;position:relative;box-shadow:0 5px 0 #e9eef7,0 14px 35px #1e3a6210;text-align:center}.study-card .badge{margin-bottom:25px}.study-card .study-word{font-size:49px;font-weight:900;letter-spacing:-1px;line-height:1.2;overflow-wrap:anywhere;max-width:100%}.study-card .translation{font-size:25px;color:#7192c4;margin-top:13px;font-weight:700}.study-card .reveal-placeholder{font-size:12px;color:#a2aec1;margin-top:20px}.study-card .audio-btn{color:var(--blue);background:#f0f5ff;width:46px;height:46px;margin-top:25px}.study-card .star-btn{position:absolute;right:18px;top:18px}.study-card .language-chip{position:absolute;left:22px;top:27px;font-size:10px}.study-card .language-chip .flag{width:18px;height:13px}.session-actions{margin-top:26px;display:grid;grid-template-columns:1fr 1fr;gap:13px}.session-actions .btn{min-height:54px}.session-actions .single{grid-column:1/-1}.keyboard-hint{text-align:center;color:#a8b2c2;font-size:10px;margin-top:19px}.keyboard-hint kbd{font:inherit;border:1px solid #dce3ee;background:#fff;padding:2px 6px;border-radius:4px;margin:0 3px}.session-tip{font-size:11px;color:#99a6bb;text-align:center;margin:26px auto 0;max-width:420px;line-height:1.7}.answer-form{width:100%;margin-top:25px}.answer-input{width:100%;border:1px solid #d8e2f3;border-radius:12px;background:#fbfcfe;padding:16px 20px;text-align:center;font-size:22px;color:var(--navy);min-height:60px;outline:0}.answer-input:focus{border-color:#91b2f6;box-shadow:0 0 0 3px #eff4ff}.answer-input::placeholder{font-size:15px;color:#b0bac9}.accent-row{display:flex;justify-content:center;gap:7px;flex-wrap:wrap;margin-top:12px}.accent-key{font-size:14px;background:#f4f7fc;border:1px solid #e5ebf5;border-radius:5px;padding:4px 9px;color:#8394af}.feedback{padding:19px 22px;border-radius:12px;margin-top:23px;font-size:13px;line-height:1.65;background:#eaf7f0;color:#298461}.feedback.wrong{background:#fff0ee;color:#ba6b63}.feedback strong{display:block;font-size:15px}.feedback .correct-word{font-weight:850;font-size:17px}.quiz-options{display:grid;grid-template-columns:1fr 1fr;gap:11px;width:100%;margin-top:27px}.quiz-option{padding:16px;border:1px solid #e1e8f3;border-radius:12px;background:#fff;font-size:14px;font-weight:750;min-height:58px}.quiz-option:hover{background:#f0f5ff;border-color:#91b1ef}.quiz-option.correct{background:#eaf7f0;border-color:#9ed0b7;color:#278360;opacity:1}.quiz-option.incorrect{background:#fff0ee;border-color:#e7b9b2;color:#b56358;opacity:1}.pair-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}.pair-column{display:flex;flex-direction:column;gap:11px}.pair-card{padding:19px 12px;min-height:65px;font-size:15px;font-weight:800;border:1.5px solid #e1e7f1;border-radius:13px;background:#fff;overflow-wrap:anywhere;transition:.2s}.pair-card.selected{border-color:#739aee;background:#edf3ff;color:var(--blue)}.pair-card.matched{background:#edf8f2;border-color:#d6edde;color:#70a78b;opacity:.6}.pair-card.wrong-pair{border-color:#e7b5ad;background:#fff0ee}.pair-score{font-size:12px;color:var(--muted);text-align:center;margin:20px 0}.result{text-align:center;padding:35px 25px}.result-symbol{height:95px;width:95px;border-radius:28px;background:#fff2d7;color:#d7a14b;display:flex;align-items:center;justify-content:center;margin:0 auto 25px;transform:rotate(-6deg)}.result-symbol .icon{height:46px;width:46px;transform:rotate(6deg);stroke-width:1.5}.result h1{font-size:31px}.result>p{margin:12px auto 26px;font-size:13px;color:#8f9db1;max-width:380px}.result-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:25px 0}.result-metrics div{border:1px solid #e2e9f4;border-radius:13px;background:white;padding:19px 10px}.result-metrics strong{font-size:27px;font-weight:900;display:block;color:#6385bb}.result-metrics span{display:block;font-size:10px;color:#97a4b7;margin-top:4px}.result .btn{margin-top:14px}.storage-banner{padding:12px 15px;border-radius:10px;background:#fff3d9;color:#967035;font-size:12px;margin-bottom:20px}.noted{font-size:11px;color:#96a2b4;margin:15px 0 0;line-height:1.7}
@media(min-width:1500px){.hero{min-height:300px;padding:35px}.hero h2{font-size:34px}.hero-art{right:32px;transform:scale(1.08);transform-origin:right center}.hero-copy{max-width:365px}.main{padding-top:38px}.dashboard-grid{gap:30px;grid-template-columns:minmax(0,1fr) 296px}}
@media(max-width:1200px){.sidebar{width:200px;padding-left:17px;padding-right:17px}.workspace{margin-left:200px}.sidebar .brand{margin-left:5px}.brand{font-size:23px}.nav-link.active:before{left:-17px}.main{padding:26px}.topbar{padding:0 26px}.dashboard-grid{grid-template-columns:minmax(0,1fr) 250px;gap:20px}.hero{padding:25px;min-height:284px}.hero-copy{width:63%}.hero h2{font-size:26px}.hero-art{right:-20px;transform:scale(.85);transform-origin:right center}.hero p{max-width:230px}.hero .eyebrow{font-size:8px}.mode-card{padding:15px 12px}.mode-card .card-arrow{right:8px}.topics-grid{gap:11px}.topic-card{padding:16px 12px}.topic-card h3{font-size:12px}.right-column{gap:16px}.panel{padding:20px}.full-topics .topic-card h3{font-size:16px}#toast{left:calc(50% + 100px)}}
@media(max-width:1050px){.sidebar{width:190px}.workspace{margin-left:190px}.dashboard-grid{grid-template-columns:minmax(0,1fr)}.right-column{display:grid;grid-template-columns:1fr 1fr;gap:18px}.goal-panel{grid-row:span 2}.week-panel{height:fit-content}.word-day{padding:18px}.word-day h3{margin-top:10px;font-size:24px}.word-day-bottom{margin-top:10px}.goal-ring{margin:13px auto}.hero-copy{width:57%}.hero-art{right:20px;transform:scale(1)}.hero{min-height:281px}.hero h2{font-size:30px}.hero p{max-width:295px}.hero .eyebrow{font-size:9px}.mode-card{padding:20px}.topic-card{padding:20px}.topic-card h3{font-size:14px}.full-topics{grid-template-columns:repeat(2,1fr)}.stats-grid{grid-template-columns:repeat(2,1fr)}.progress-lower{grid-template-columns:1fr}.mode-card p{font-size:11px}.topbar-tools{gap:12px}.topbar-context{font-size:12px}#toast{left:calc(50% + 95px)}}
@media(max-width:760px){.sidebar{display:none}.workspace{margin-left:0}.topbar{height:74px;padding:0 20px;position:sticky;top:0;z-index:25;background:#fff}.topbar-context{display:none}.mobile-brand{display:flex;font-size:22px;gap:8px}.mobile-brand img{width:33px;height:33px}.topbar-divider,.avatar,.streak-small{display:none}.topbar-tools{gap:8px}.lang-button{padding:8px 10px;font-size:11px;gap:7px}.lang-button .flag{width:21px;height:16px}.lang-button .icon{width:12px;height:12px}.main{padding:25px 20px 104px;min-height:calc(100dvh - 74px)}h1{font-size:27px;letter-spacing:-.7px}.greeting-top{font-size:10px}.page-heading{margin-bottom:24px}.page-heading p{font-size:13px;margin-top:7px}.dashboard-grid{gap:24px}.hero{padding:27px;min-height:280px}.hero-copy{width:57%}.hero h2{font-size:29px}.hero p{font-size:12px}.hero-art{right:10px}.right-column{gap:16px}.mode-card{padding:19px 16px}.mode-card h3{font-size:13px}.mode-card p{font-size:10px}.section-heading h2{font-size:18px}.topics-grid{gap:13px}.topic-card{padding:19px 16px}.page-footer{margin-top:26px;font-size:9px}.mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;background:#fffffff5;backdrop-filter:blur(14px);border-top:1px solid var(--line);padding:10px 8px max(11px,env(safe-area-inset-bottom));justify-content:space-around;z-index:35}.mobile-nav a{display:flex;flex-direction:column;align-items:center;gap:4px;flex:1;color:#94a0b5;font-size:9px;font-weight:750;min-height:41px;justify-content:center}.mobile-nav a.active{color:var(--blue)}.mobile-nav a .icon{width:23px;height:23px}.mobile-nav a.active .icon{stroke-width:2;filter:drop-shadow(0 2px 4px #7c9cf04d)}.full-topics .topic-card{padding:23px}.practice-grid{gap:15px}.practice-card{padding:23px}.focus-panel{padding:20px}.stats-grid{gap:14px}.stat-card{padding:23px}.progress-lower{gap:18px}.chart-panel{padding:23px}.chart{gap:14px}.header-action{font-size:11px;padding:10px 13px;min-height:41px}.page-heading.between{align-items:flex-start}.word-row{gap:11px}.dictionary-list{padding:0 17px}.word-row .badge{display:none}#toast{left:50%;bottom:85px;width:max-content}.session-top{margin-bottom:25px}.study-card{min-height:345px}.keyboard-hint{display:none}.session-tip{margin-top:23px}.session-heading h1{font-size:24px}.session-heading p{font-size:12px}.session-wrap{margin-top:0}.result{padding:24px 0}.result h1{font-size:28px}.result-metrics strong{font-size:25px}}
@media(max-width:480px){.topbar{padding:0 18px}.main{padding:22px 18px 100px}.mobile-brand{font-size:21px}.mobile-brand img{width:31px;height:31px}.lang-button{gap:6px;padding:8px}.lang-button .language-name{max-width:93px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}h1{font-size:25px}.page-heading p{font-size:12px}.hero{padding:25px 21px;min-height:310px;border-radius:18px}.hero-copy{width:70%}.hero .eyebrow{font-size:8px;letter-spacing:1.2px}.hero h2{font-size:27px;max-width:220px;margin-top:14px}.hero p{font-size:11px;max-width:202px;margin-bottom:20px}.hero-art{right:-31px;top:46px;transform:scale(.62);transform-origin:right center}.hero-art .spark{left:32px}.hero .btn{padding:13px 15px;font-size:12px}.hero-meta{font-size:9px}.mode-grid{gap:9px}.mode-card{padding:16px 10px}.mode-card .icon-tile{width:34px;height:34px;border-radius:9px;margin-bottom:13px}.mode-card h3{font-size:11px;line-height:1.45}.mode-card p{font-size:9px;margin-top:4px}.mode-card .card-arrow{width:11px;height:11px;top:19px;right:8px}.section-heading{margin-top:23px;margin-bottom:13px}.section-heading h2{font-size:17px}.text-link{font-size:11px}.topics-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.topic-card{padding:18px 15px;min-height:160px}.topic-card h3{font-size:12px}.topic-card p{font-size:10px}.topic-progress{margin-top:auto;padding-top:17px}.right-column{display:grid;grid-template-columns:1fr;gap:14px}.goal-panel{grid-row:auto;display:grid;grid-template-columns:130px 1fr;column-gap:15px;padding:20px;align-items:center}.goal-panel>.between{grid-column:1/-1;margin-bottom:5px}.goal-ring{grid-column:1;grid-row:2/4;margin:0;width:123px;height:123px}.goal-ring svg{width:123px;height:123px}.goal-panel .goal-caption{grid-column:2;text-align:left;align-self:end;font-size:12px}.goal-panel .goal-bottom{grid-column:2;align-self:start;justify-content:flex-start;font-size:10px;margin-top:12px;padding-top:10px}.goal-number strong{font-size:29px}.week-panel{padding:22px}.week{gap:9px}.day-circle{width:30px;height:30px}.day{font-size:10px}.word-day{padding:21px}.word-day h3{margin-top:15px;font-size:28px}.word-day-bottom{margin-top:16px}.page-footer{align-items:flex-start;font-size:9px;line-height:1.7}.page-footer .row{align-items:flex-start;max-width:190px}.full-topics{gap:13px}.full-topics .topic-card{padding:20px 16px;min-height:205px}.full-topics .topic-card h3{font-size:14px}.full-topics .topic-card p{font-size:11px}.full-topics .icon-tile{width:42px;height:42px;margin-bottom:17px}.course-strip{padding:18px;gap:12px}.course-strip .badge{display:none}.course-strip h3{font-size:13px}.course-strip p{font-size:10px}.practice-grid{grid-template-columns:1fr}.practice-card{padding:23px}.practice-card .icon-tile{float:left;margin-right:18px;margin-bottom:0;width:45px;height:45px}.practice-card h3{font-size:17px}.practice-card p{margin-left:63px;font-size:12px;margin-top:6px;margin-bottom:19px}.practice-meta{clear:both;padding-top:15px;border-top:1px solid var(--line)}.focus-panel{flex-direction:column;align-items:stretch;gap:16px}.focus-panel .btn{align-self:flex-start}.stat-card{padding:20px}.stat-card strong{font-size:28px}.stat-card p{font-size:11px}.chart{gap:11px;height:160px;padding:0}.chart-panel{padding:21px}.progress-lower .panel{padding:22px}.modal-head{padding:23px 21px 16px}.modal-head h2{font-size:20px}.modal-body{padding:0 21px 24px}.language-grid{gap:8px}.language-option{padding:12px 9px;gap:8px}.language-option strong{font-size:11px}.language-option small{font-size:9px}.language-option .flag{width:27px;height:21px}.language-option .icon{width:13px;height:13px;margin-left:0}.language-option{position:relative}.language-option.selected .icon{position:absolute;top:4px;right:4px}.word-number{display:none}.word-row{gap:6px}.word-row .icon-btn{width:32px;height:36px}.word-info strong{font-size:15px}.word-info span{font-size:12px}.filter-row{gap:6px}.filter-chip{font-size:11px;padding:8px 11px}.topic-detail-head{padding:21px}.topic-detail-head .between{flex-direction:column;align-items:stretch;gap:16px}.study-card{padding:25px 18px;min-height:330px}.study-card .study-word{font-size:39px;margin-top:13px}.study-card .translation{font-size:23px}.study-card .language-chip{left:18px;top:23px}.study-card .badge{font-size:9px;margin-top:29px;margin-bottom:13px}.session-actions .btn{padding:13px 10px;font-size:12px}.quiz-options{gap:9px}.quiz-option{padding:13px 8px;font-size:13px}.pair-grid{gap:10px}.pair-card{font-size:13px;padding:15px 8px;min-height:64px}.session-heading h1{font-size:22px}.session-heading p{font-size:11px}.goal-options{gap:8px}.goal-option{padding:14px 5px}.goal-option small{font-size:10px}.detail-word h3{font-size:34px}.result-metrics{gap:8px}.result-metrics div{padding:17px 8px}.result-metrics span{font-size:9px}}
.mode-card h3{font-size:14px}.mode-card p{font-size:12px}.topic-card h3{font-size:14px}.topic-card p{font-size:12px}.topic-progress small{font-size:10px}.btn{font-size:14px}.hero p{font-size:13px}.hero-meta{font-size:11px}
@media(max-width:760px){.mobile-nav a{font-size:11px}.lang-button{font-size:12px}.mode-card h3{font-size:14px}.mode-card p{font-size:11px}.topic-card h3{font-size:14px}.topic-card p{font-size:12px}.hero .btn{font-size:14px}.hero p{font-size:12px}.hero-meta{font-size:10px}.topic-progress small{font-size:11px}.full-topics .topic-card p{font-size:12px}.session-actions .btn{font-size:14px}.week-note{font-size:11px}.day{font-size:11px}.goal-caption{font-size:12px}}
@media(max-width:480px){.mode-card{padding:16px 11px;min-height:155px}.mode-card h3{font-size:13px;line-height:1.4}.mode-card p{font-size:11px;line-height:1.45}.hero p{max-width:195px}.hero .btn{font-size:13px}.mobile-nav a{font-size:10px}.topic-card{min-height:174px}.topic-card h3{font-size:14px}.topic-card p{font-size:12px}.full-topics .topic-card p{font-size:12px}.filter-chip{font-size:12px}.language-option strong{font-size:12px}.language-option small{font-size:10px}.page-heading p{font-size:13px}.word-day p{font-size:14px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}
/* One stable page frame: the scrollbar never shifts the content, and narrow pages start at the same left edge as wide ones. */
html{scrollbar-gutter:stable}
.main>.feature-narrow,.main>.session-wrap,.main>.video-filtered,.main>.profile-page,.main>.language-plan-form{margin-left:auto;margin-right:auto}
.nav{gap:4px}.nav-link{padding:11px 16px}
@media(min-width:761px) and (max-height:860px){.sidebar-note{display:none}.sidebar .nav{overflow-y:auto}}
/* Practice cards: three per row on wide screens; a card left alone on the last row takes the whole row instead of leaving a hole. */
@media(min-width:1100px){.practice-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.practice-grid>:last-child:nth-child(3n+1){grid-column:1/-1}}
@media(min-width:761px) and (max-width:1099px){.practice-grid>:last-child:nth-child(2n+1){grid-column:1/-1}}