:root{--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;--font-word:Georgia,"Times New Roman",serif;--bg:#f7f8f5;--panel:#fdfefa;--ink:#1d2d3c;--muted:#586676;--accent:#294f76;--accent-dark:#193b5b;--accent-soft:#e7edf2;--accent-hover:#dbe5ed;--line:#29476426;--line-strong:#2947644a;--on-accent:#f7fafc;--focus:#315d86;--focus-soft:#315d861f;--input:#f8faf8;--inset:#edf1f3;--danger-ink:#934d43;--danger-soft:#f9efed;--danger-line:#934d432b;--warning-ink:#7d631c;--warning-soft:#f5f1e5;--warning-line:#7d631c2b;--neutral-ink:#69645d;--neutral-soft:#efede9;--offline-dot:#977130;--chart-new:#294f76;--chart-review:#96aabe;--feedback-forget:#a96b60;--feedback-hard:#ab9557;--feedback-good:#8b9caa;--feedback-easy:#294f76;--scrim:#1d2d3c42;--modal-shadow:#1b35434d;--toast:#253f56f5;--toast-line:#66809a;--toast-shadow:#21394f26;--nav-glass:#fdfefae8;--nav-shadow:0 8px 28px -15px #1d3f5759;--safe:env(safe-area-inset-bottom,0px);font-family:var(--font-sans);color:var(--ink);background:var(--bg);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}html,body{margin:0;min-width:320px;overflow-x:clip}body{min-height:100dvh;background:var(--bg)}button,input,textarea,select{font:inherit}button,a,input,textarea{touch-action:manipulation}button{color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent;border:0;background:none}button:disabled{cursor:default;opacity:.45}a{color:var(--accent);text-underline-offset:3px}svg{flex-shrink:0}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:3px}input:focus,textarea:focus{outline:0;border-color:var(--focus);box-shadow:0 0 0 3px var(--focus-soft)}h1,h2,h3,p{margin:0}h1,h2,h3{color:var(--ink);min-width:0;overflow-wrap:anywhere}h1{font-size:32px;font-weight:600;letter-spacing:-1px;line-height:1.45}h2{font-size:18px;font-weight:600;letter-spacing:-.3px}h3{font-size:17px;font-weight:600}p{line-height:1.85}small{font-size:12px}strong{font-weight:600}.muted{color:var(--muted)}.small{font-size:13px}.preserve{white-space:pre-wrap;overflow-wrap:anywhere}.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;clip-path:inset(50%);overflow:hidden;white-space:nowrap}.eyebrow{font-size:12px;letter-spacing:.5px;color:var(--muted);margin-bottom:9px}.app-shell{max-width:1120px;margin:auto;padding:0 max(32px,env(safe-area-inset-right)) calc(145px + var(--safe)) max(32px,env(safe-area-inset-left))}.app-header{display:flex;align-items:center;justify-content:space-between;height:100px;border-bottom:1px solid var(--line-strong);margin-bottom:40px;gap:16px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-size:23px;letter-spacing:3px;font-weight:650;min-height:44px;white-space:nowrap}.brand-mark{width:44px;height:44px;color:var(--accent);display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;border:1px solid var(--line-strong);border-radius:3px}.brand small{display:block;font-size:10px;font-weight:400;letter-spacing:.8px;color:var(--muted);margin-top:5px}.header-right{display:flex;align-items:center;gap:22px}.icon-button{min-width:44px;min-height:44px;padding:10px;display:inline-flex;align-items:center;justify-content:center;border-radius:7px}.settings-button{position:relative;color:var(--accent)}.update-dot{position:absolute;top:8px;right:8px;width:6px;height:6px;border-radius:50%;background:var(--accent)}.connection{font-size:11px;color:var(--muted);display:inline-flex;align-items:center;gap:8px;white-space:nowrap}.connection>span{width:5px;height:5px;background:var(--accent);border-radius:50%}.connection-offline>span{background:var(--offline-dot)}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:34px}.date-stamp{font-size:9px;letter-spacing:1.8px;line-height:1.3;color:var(--muted);text-align:center;border-left:1px solid var(--line);padding-left:24px}.date-stamp strong{font-family:var(--font-word);font-size:39px;letter-spacing:-2px;color:var(--ink);font-weight:400}.today-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:44px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:28px 0 30px}.learning-hero{min-width:0;padding-left:1px}.hero-top{display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--muted)}.mini-label{font-size:12px;color:var(--muted)}.plan-edition{font-size:9px;letter-spacing:1.4px;color:var(--muted)}.hero-numbers{display:flex;gap:42px;align-items:flex-end;margin:20px 0 16px}.hero-numbers>div{display:flex;flex-direction:column;gap:7px;min-width:0}.hero-numbers>div>span{font-size:13px;color:var(--muted)}.hero-numbers strong{font-family:var(--font-word);font-size:104px;line-height:1.04;letter-spacing:-5px;color:var(--ink);font-variant-numeric:tabular-nums;font-weight:400;overflow-wrap:anywhere;min-width:0}.hero-numbers small{font-family:var(--font-sans);font-size:13px;font-weight:400;letter-spacing:0;margin-left:10px;color:var(--muted)}.hero-numbers .fresh-count{padding-bottom:7px}.hero-numbers .fresh-count strong{font-size:52px;letter-spacing:-2px;color:var(--accent)}.hero-numbers>i{width:1px;height:60px;background:var(--line);margin-bottom:10px}.hero-description{font-size:13px;color:var(--muted);margin:18px 0 25px;min-height:24px;max-width:490px}.primary-button,.secondary-button{display:inline-flex;min-height:46px;align-items:center;justify-content:center;gap:10px;border-radius:7px;font-size:13px;font-weight:550;padding:12px 20px;white-space:nowrap;transition:background .15s,transform .15s}.primary-button{background:var(--accent);color:var(--on-accent);border:1px solid var(--accent)}.secondary-button{border:1px solid var(--line-strong);background:transparent;color:var(--accent)}.start-button{width:280px;max-width:100%;min-height:52px;justify-content:space-between;padding:14px 20px;font-size:14px}.hero-bottom{display:flex;justify-content:space-between;gap:12px;margin-top:19px;color:var(--muted);font-size:11px}.hero-bottom>span{display:flex;align-items:center;gap:5px}.daily-aside{display:flex;flex-direction:column;border-left:1px solid var(--line);padding-left:34px;min-width:0}.day-progress-card{padding:0 0 25px;flex:1}.section-label{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--muted)}.day-total{display:flex;align-items:baseline;gap:14px;margin-top:25px}.day-total strong{font-family:var(--font-word);font-size:49px;font-weight:400;line-height:1;letter-spacing:-2px;font-variant-numeric:tabular-nums}.day-total>span{font-size:12px;color:var(--muted)}.small-rule{height:1px;background:var(--line);margin:22px 0 16px}.day-breakdown{display:flex;justify-content:space-between;gap:10px;font-size:12px;color:var(--muted)}.day-breakdown b{color:var(--ink);font-weight:600;margin-left:10px;font-variant-numeric:tabular-nums;font-size:14px}.day-progress-card>p{font-size:12px;color:var(--muted);margin-top:17px}.quick-add{display:flex;align-items:center;gap:13px;width:100%;border-top:1px solid var(--line);padding:19px 0 0;text-align:left;min-height:80px}.quick-add>span:nth-child(2){flex:1;min-width:0}.quick-add strong{font-size:14px;display:block;margin-bottom:6px}.quick-add small{font-size:12px;color:var(--muted)}.quick-add>svg{color:var(--accent)}.quick-icon{display:flex;align-items:center;justify-content:center;width:35px;height:35px;color:var(--accent);flex-shrink:0}.below-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:32px 0 12px}.below-heading>span{font-size:11px;color:var(--muted)}.text-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:7px;font-size:12px;color:var(--accent);white-space:nowrap;padding:8px 3px}.welcome-wordbook{display:flex;align-items:center;gap:23px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:25px 0;min-height:145px}.welcome-icon{display:flex;align-items:center;justify-content:center;color:var(--accent);width:56px;height:60px;flex-shrink:0}.welcome-wordbook h3{font-size:15px;margin-bottom:8px}.welcome-wordbook p{font-size:13px;color:var(--muted)}.welcome-wordbook .text-button{margin-top:2px}.welcome-note{margin-left:auto;font-family:var(--font-word);font-size:19px;color:var(--muted);line-height:1.55;flex-shrink:0}.local-note{display:flex;align-items:center;justify-content:center;gap:8px;color:var(--muted);font-size:11px;margin-top:26px;line-height:1.8}.recent-words{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:32px;border-top:1px solid var(--line)}.recent-word{display:grid;grid-template-columns:minmax(0,1fr) 20px;gap:7px;border-bottom:1px solid var(--line);text-align:left;padding:18px 3px;min-height:88px}.recent-word span{font-family:var(--font-word);font-size:24px;font-weight:400;overflow-wrap:anywhere}.recent-word small{grid-row:2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--muted);font-size:12px}.recent-word svg{grid-column:2;grid-row:1/3;align-self:center;color:var(--accent)}.bottom-nav{position:fixed;bottom:calc(20px + var(--safe));left:50%;transform:translate(-50%);width:366px;max-width:calc(100vw - 24px);display:flex;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:5px;box-shadow:var(--nav-shadow);z-index:20;isolation:isolate}.bottom-nav button{flex:1;min-height:52px;display:flex;align-items:center;justify-content:center;gap:9px;color:var(--muted);border-radius:12px;font-size:12px;white-space:nowrap}.bottom-nav button.active{color:var(--accent-dark);background:var(--accent-soft);font-weight:650}.heading-actions{display:flex;gap:10px;flex-shrink:0}.heading-count{display:inline-block;font-family:var(--font-word);font-size:18px;font-weight:400;margin-left:13px;vertical-align:middle;letter-spacing:0;color:var(--muted)}.search-field{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line-strong);padding:0 4px;min-height:56px;color:var(--muted)}.search-field:focus-within{border-color:var(--focus);box-shadow:0 1px 0 var(--focus)}.search-field input{flex:1;min-width:0;border:0!important;background:transparent;box-shadow:none!important;font-size:14px;padding:17px 0;color:var(--ink)}.search-field input::placeholder{color:var(--muted)}.filter-row{display:flex;align-items:center;justify-content:space-between;margin:22px 0 13px;gap:12px}.filter-row>span{font-size:12px;color:var(--muted);white-space:nowrap}.filters{display:flex;gap:5px}.filters button{min-height:44px;padding:9px 15px;font-size:12px;color:var(--muted);border-radius:5px;white-space:nowrap}.filters button.selected{background:var(--accent-soft);color:var(--accent-dark);font-weight:600}.word-list{border-top:1px solid var(--line-strong)}.word-row{display:flex;align-items:center;gap:24px;min-height:89px;padding:16px 5px;width:100%;text-align:left;border-bottom:1px solid var(--line)}.row-word{display:flex;flex-direction:column;gap:8px;width:33%;min-width:0}.row-word strong{font-family:var(--font-word);font-size:24px;font-weight:400;overflow-wrap:anywhere}.row-word small{font-size:12px;color:var(--muted);overflow-wrap:anywhere}.row-meaning{font-size:13px;line-height:1.8;color:var(--muted);flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-width:0}.word-state{font-size:10px;border-radius:4px;padding:5px 8px;white-space:nowrap;color:var(--muted);background:var(--accent-soft)}.learned{color:var(--accent)}.paused{background:var(--neutral-soft);color:var(--neutral-ink)}.word-row>svg{color:var(--accent)}.load-more{display:block;width:100%;min-height:50px;font-size:12px;color:var(--accent)}.wordbook-empty{padding:55px 20px;display:flex;flex-direction:column;align-items:center;gap:16px;color:var(--accent);border-top:1px solid var(--line);border-bottom:1px solid var(--line);text-align:center}.wordbook-empty h3{font-size:16px}.wordbook-empty p{font-size:13px;color:var(--muted)}.dictionary-results{margin-top:35px}.dictionary-results .below-heading{margin:0 0 8px}.dictionary-row{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;padding:16px 5px;border-bottom:1px solid var(--line);gap:15px;min-height:76px}.dictionary-row>div{min-width:0}.dictionary-row strong{font-family:var(--font-word);font-size:22px;font-weight:400;overflow-wrap:anywhere}.dictionary-row p{font-size:13px;line-height:1.6;color:var(--muted);margin-top:6px}.dictionary-row svg{color:var(--accent)}.stats-leaf{width:52px;height:52px;display:flex;align-items:center;justify-content:center;color:var(--accent)}.stats-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line);padding:28px 0;margin-bottom:34px}.stats-summary>div{padding:0 32px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:15px;min-width:0}.stats-summary>div:first-child{padding-left:0}.stats-summary>div:last-child{border:0}.stats-summary>div>span{font-size:12px;color:var(--muted)}.stats-summary strong{font-family:var(--font-word);font-size:49px;font-weight:400;line-height:1.2;letter-spacing:-2px;font-variant-numeric:tabular-nums;min-width:0;max-width:100%;overflow-wrap:anywhere}.stats-summary small{font-family:var(--font-sans);font-size:12px;letter-spacing:0;margin-left:8px;color:var(--muted)}.stats-grid{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:40px}.stats-card{padding:0;min-width:0}.stats-card h2{font-size:15px}.feedback-card{border-left:1px solid var(--line);padding-left:30px}.chart-legend{display:flex;align-items:center;gap:6px;font-size:10px}.chart-legend i,.chart-legend b{width:7px;height:7px;border-radius:1px;display:inline-block;background:var(--chart-new)}.chart-legend b{background:var(--chart-review);margin-left:4px}.activity-chart{display:flex;gap:13px;height:230px;padding-top:28px}.chart-day{display:flex;flex-direction:column;flex:1;align-items:center;gap:8px;font-size:10px;color:var(--muted);min-width:0}.bar-number{font-size:11px;min-height:13px}.bar-space{width:100%;flex:1;display:flex;align-items:flex-end;justify-content:center}.bar-stack{width:100%;max-width:32px;border-radius:2px 2px 0 0;display:flex;flex-direction:column;overflow:hidden;min-height:0}.bar-new{background:var(--chart-new)}.bar-reviews{background:var(--chart-review)}.stats-empty{height:233px;display:flex;flex-direction:column;gap:18px;align-items:center;justify-content:center;color:var(--accent)}.stats-empty p{font-size:13px;color:var(--muted)}.chart-table{margin-top:18px;color:var(--muted);font-size:11px}.chart-table summary{cursor:pointer;min-height:44px;display:flex;align-items:center}.feedback-row{margin-top:25px}.feedback-row>div:first-child{display:flex;justify-content:space-between;align-items:baseline;font-size:12px;color:var(--muted)}.feedback-row strong{color:var(--accent);font-family:var(--font-word);font-size:21px;font-weight:400}.feedback-row small{font-family:var(--font-sans);font-size:10px;margin-left:5px;color:var(--muted)}.feedback-track{height:4px;background:var(--accent-soft);margin-top:10px;overflow:hidden}.feedback-track span{display:block;height:100%;background:var(--accent-soft)}.feedback-1 span{background:var(--feedback-forget)}.feedback-2 span{background:var(--feedback-hard)}.feedback-3 span{background:var(--feedback-good)}.feedback-4 span{background:var(--feedback-easy)}.feedback-card .form-footnote{margin-top:25px}.is-studying .app-header{margin-bottom:24px}.study-page{max-width:730px;margin:auto}.study-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:15px}.study-top>span{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:9px;white-space:nowrap}.study-top>span i{width:3px;height:3px;background:var(--line-strong);border-radius:50%}.study-progress{height:2px;background:var(--accent-soft);margin-bottom:23px;overflow:hidden}.study-progress>span{display:block;height:100%;background:var(--accent)}.study-card{padding:0 34px 15px;min-height:385px}.study-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}.state-label{font-size:11px;color:var(--accent);padding:6px 0;letter-spacing:.5px}.new-label{color:var(--muted)}.subtle{font-size:11px;color:var(--muted)}.study-word{text-align:center;padding:42px 0 30px}.study-word h1{font-family:var(--font-word);font-size:68px;font-weight:400;letter-spacing:-2px;line-height:1.2;max-width:100%;overflow-wrap:anywhere}.pronunciation{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:17px;color:var(--muted);font-size:14px}.pronunciation>span{min-width:0;overflow-wrap:anywhere}.sound-button{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;border-radius:50%;color:var(--accent);border:1px solid var(--line);flex-shrink:0}.recall-prompt{text-align:center;padding:15px 0 45px}.recall-dots{font-family:var(--font-word);font-size:27px;letter-spacing:8px;color:var(--muted);line-height:1}.recall-prompt p{font-size:13px;color:var(--muted);margin-top:20px}.my-meaning{padding:24px 0;border-top:1px solid var(--line)}.my-meaning>span{display:block;color:var(--muted);font-size:12px;letter-spacing:.4px;margin-bottom:12px}.my-meaning p{font-size:20px;font-weight:500;color:var(--ink);line-height:1.8;overflow-wrap:anywhere}.word-details>details{border-top:1px solid var(--line)}.word-details summary,.edit-more>summary{list-style:none;min-height:58px;display:flex;align-items:center;gap:8px;font-size:13px;cursor:pointer;color:var(--muted)}.word-details summary::-webkit-details-marker,.edit-more>summary::-webkit-details-marker{display:none}.word-details summary>span{font-size:10px;color:var(--muted)}.word-details summary>svg,.edit-more>summary>svg{margin-left:auto;transition:transform .15s}.word-details details[open]>summary>svg,.edit-more[open]>summary>svg{transform:rotate(180deg)}.pair-list{padding:0 0 14px}.pair{padding:9px 0 14px}.pair+.pair{border-top:1px dashed var(--line)}.pair-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.pair-top>p{font-family:var(--font-word);font-size:18px;line-height:1.8;padding-top:6px;overflow-wrap:anywhere;min-width:0}.pair-top .sound-button{border-color:transparent}.pair>.muted{font-size:13px;margin-top:2px}.missing{font-size:13px;color:var(--muted);line-height:1.8;padding:4px 0 21px}.reference-content{padding:0 0 20px}.reference-content p{font-size:13px;line-height:1.9}.reference-content>.muted{margin-top:12px}.usage-box{padding:13px 16px;border-radius:5px;background:var(--accent-soft);margin-top:14px}.usage-box small{font-size:11px;color:var(--muted);display:block;margin-bottom:5px}.usage-box p{font-size:13px;color:var(--muted)}.source-line{font-size:10px!important;color:var(--muted);line-height:1.8!important;margin-top:14px;overflow-wrap:anywhere}.source-line a{color:var(--accent)}.study-actions{position:sticky;bottom:12px;padding:19px 0 10px;margin-top:20px;border-top:1px solid var(--line-strong);background:var(--bg);z-index:10}.reveal-button{width:100%;height:54px;font-size:14px}.rating-prompt{font-size:12px;color:var(--muted);margin-bottom:13px;text-align:center}.rating-buttons{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.rating{border:1px solid var(--line);border-radius:7px;min-height:67px;padding:12px 5px;display:flex;flex-direction:column;gap:7px;align-items:center;justify-content:center;background:var(--panel)}.rating strong{font-size:14px;font-weight:550}.rating small{font-size:11px;color:var(--muted);white-space:nowrap}.rating-1 strong{color:var(--danger-ink)}.rating-2 strong{color:var(--warning-ink)}.rating-3 strong{color:var(--accent)}.rating-4{background:var(--accent-soft);border-color:var(--line-strong)}.rating-4 strong{color:var(--accent-dark)}.keyboard-help{font-size:11px;color:var(--muted);text-align:center;margin-top:12px;min-height:17px}.keyboard-help.is-saving{display:block;color:var(--accent);font-size:11px}.session-complete{text-align:center;padding:65px 20px 30px}.completion-icon{width:78px;height:78px;border-radius:50%;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;color:var(--accent);margin:0 auto 32px}.session-complete h1{margin:10px 0 17px}.session-complete>.muted{font-size:13px}.session-complete>.primary-button{margin-top:30px;min-width:230px}.next-review{font-size:12px;color:var(--muted);background:var(--accent-soft);border-radius:7px;padding:18px;max-width:460px;margin:22px auto 0;line-height:1.8}.modal-shade{position:fixed;inset:0;z-index:50;background:var(--scrim);display:flex;align-items:center;justify-content:center;padding:24px}.modal{width:560px;max-width:100%;max-height:var(--modal-height, calc(100dvh - 48px) );display:flex;flex-direction:column;min-height:0;background:var(--panel);border:1px solid var(--line);border-radius:7px;box-shadow:0 25px 90px -30px var(--modal-shadow);outline:none;animation:modal-in .18s ease-out}.modal-wide{width:680px}.modal-head{padding:20px 25px 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:12px;flex-shrink:0}.modal-head h2{font-size:18px;line-height:1.5}.modal-head .icon-button{color:var(--muted)}.editor-form{display:flex;flex-direction:column;min-height:0;flex:1}.form-body{padding:25px;overflow:auto;min-height:0;overscroll-behavior:contain;scroll-padding:20px}.form-body>label{display:block;margin-bottom:23px;font-size:13px;color:var(--muted)}.form-body label input,.form-body label textarea{display:block;margin-top:10px;width:100%;background:var(--input);border:1px solid var(--line);border-radius:6px;padding:12px 13px;font-size:13px;line-height:1.7;color:var(--ink);resize:vertical;min-height:46px}.form-body input::placeholder,.form-body textarea::placeholder{color:var(--muted);font-size:12px}.optional{font-size:11px;color:var(--muted);margin-left:5px}.input-action{position:relative;display:flex;align-items:center;margin-top:10px;gap:8px}.form-body label .input-action input{margin-top:0;min-width:0}.lookup-button{background:var(--accent-soft);color:var(--accent);border-radius:9px;min-height:46px;white-space:nowrap;padding:9px 13px;font-size:11px;flex-shrink:0}.edit-more{border-top:1px solid var(--line);margin-top:7px}.edit-more>summary{min-height:55px}.edit-more-content{padding-top:12px}.edit-more-content>label{display:block;font-size:13px;color:var(--muted);margin-bottom:19px}.modal-actions{display:flex;align-items:center;justify-content:flex-end;gap:12px;padding:17px 25px;border-top:1px solid var(--line);flex-shrink:0;background:var(--panel);border-radius:0 0 12px 12px}.modal-actions .primary-button{min-width:140px}.form-footnote{font-size:12px;line-height:1.8;color:var(--muted);margin:12px 0 0}.error-line{font-size:12px;color:var(--danger-ink);background:var(--danger-soft);border:1px solid var(--danger-line);border-radius:6px;padding:12px 15px;margin-top:15px;line-height:1.7;overflow-wrap:anywhere}.info-line{font-size:11px;color:var(--muted);background:var(--accent-soft);border:1px solid var(--line);border-radius:6px;padding:11px 14px;margin:14px 0;line-height:1.8}.intro-text{font-size:13px;margin-bottom:20px}.file-drop{position:relative;display:flex!important;flex-direction:column;align-items:center;gap:13px;padding:30px 20px;border:1px dashed var(--line-strong);border-radius:7px;background:var(--accent-soft);color:var(--accent);cursor:pointer;text-align:center}.file-drop>strong{font-size:14px;color:var(--accent)}.file-drop>span{font-size:12px;color:var(--muted)}.file-drop input{opacity:0;position:absolute;inset:0;width:100%;height:100%;cursor:pointer}.file-drop:focus-within,.file-button:focus-within{outline:3px solid var(--focus);outline-offset:3px}.or-line{display:flex;align-items:center;gap:15px;font-size:10px;color:var(--muted);margin:23px 0}.or-line:before,.or-line:after{content:"";height:1px;background:var(--line);flex:1}.import-text{width:100%;padding:16px;font-size:13px;line-height:1.8;border:1px solid var(--line);border-radius:7px;background:var(--input);resize:vertical;color:var(--ink)}.preview-summary{display:flex;justify-content:space-around;gap:15px;border:1px solid var(--line);border-radius:7px;padding:20px;background:var(--accent-soft)}.preview-summary>div{display:flex;flex-direction:column;gap:8px;text-align:center}.preview-summary strong{font-size:27px;font-weight:500;color:var(--accent);font-variant-numeric:tabular-nums}.preview-summary span{font-size:12px;color:var(--muted)}.file-name{font-size:12px;color:var(--muted);margin:18px 0 12px;overflow-wrap:anywhere}.import-preview{border:1px solid var(--line);border-radius:7px;overflow:auto;max-height:350px;margin-top:16px}table{border-collapse:collapse;width:100%;font-size:11px;text-align:left}th{font-weight:550;color:var(--muted);background:var(--inset);padding:13px 15px;position:sticky;top:0}td{padding:12px 15px;border-top:1px solid var(--line);line-height:1.8;color:var(--muted);overflow-wrap:anywhere}.setting-section{padding-bottom:25px;margin-bottom:24px;border-bottom:1px solid var(--line)}.setting-section h3{font-size:14px;margin-bottom:17px}.daily-label{display:flex!important;align-items:center;justify-content:space-between;gap:14px;font-size:13px;color:var(--muted)}.daily-label>span{flex:1}.daily-label small{display:block;font-size:12px;color:var(--muted);line-height:1.8;margin-top:7px}.daily-label input{width:85px!important;margin-top:0!important;text-align:center;font-size:20px!important;flex-shrink:0}.setting-buttons{display:flex;gap:10px;margin-top:17px;flex-wrap:wrap}.setting-buttons .secondary-button{font-size:12px;flex:1;min-width:160px}.file-button{position:relative;cursor:pointer}.file-button input{position:absolute;opacity:0;inset:0;width:100%;cursor:pointer}.recovery-link{margin-top:9px;font-size:10px;color:var(--muted)}.install-help{font-size:12px;color:var(--muted);padding:15px;border-radius:7px;background:var(--accent-soft);margin-top:15px}.install-help p+p{margin-top:10px}.about-line{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:11px}.restore-mark{width:68px;height:68px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;border-radius:7px;margin-bottom:22px}.restore-warning{font-size:12px;background:var(--warning-soft);color:var(--warning-ink);border-radius:7px;padding:16px;margin-top:20px}.form-body>h3+.muted{font-size:12px;margin-top:13px}.word-view .my-meaning{margin-top:25px}.view-word{display:flex;align-items:center;justify-content:space-between;gap:12px}.view-word h1{font-family:var(--font-word);font-size:38px;font-weight:400;letter-spacing:-.8px}.view-phonetic{font-size:14px;color:var(--muted);margin-top:12px;overflow-wrap:anywhere}.toast{position:fixed;bottom:calc(108px + var(--safe));left:50%;transform:translate(-50%);max-width:calc(100vw - 32px);background:var(--toast);border:1px solid var(--toast-line);color:var(--on-accent);border-radius:13px;box-shadow:0 10px 30px var(--toast-shadow);padding:14px 20px;z-index:100;display:flex;align-items:center;gap:9px;font-size:12px;line-height:1.7;animation:card-in .15s ease-out}.boot-screen{min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:30px;text-align:center;gap:22px;color:var(--muted)}.boot-screen p{font-size:13px;max-width:500px}.boot-screen h1{font-size:24px}.boot-screen .brand-mark{width:60px;height:60px;border-radius:7px}.auth-page{min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:max(40px,env(safe-area-inset-top)) max(28px,env(safe-area-inset-right)) max(24px,env(safe-area-inset-bottom)) max(28px,env(safe-area-inset-left))}.auth-layout{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);width:100%;max-width:1020px;border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);padding:46px 0}.auth-intro{display:flex;flex-direction:column;padding:55px 52px 20px 16px;min-width:0}.auth-display{font-family:var(--font-word);font-size:66px;line-height:1.06;letter-spacing:-2.4px;color:var(--ink);overflow-wrap:anywhere;min-width:0}.auth-display em{font-weight:400;color:var(--accent)}.auth-intro-note{font-size:14px;color:var(--muted);line-height:1.9;margin-top:35px}.auth-edition{font-size:11px;letter-spacing:1px;color:var(--muted);margin-top:auto;padding-top:60px}.auth-card{min-width:0;border-left:1px solid var(--line);padding:0 30px 0 48px}.auth-card .brand{margin-bottom:36px}.auth-card>.eyebrow{display:none}.auth-card h1{font-size:27px;line-height:1.45;letter-spacing:-.6px;margin:10px 0 14px}.auth-card>.muted{font-size:13px;line-height:1.85;margin-bottom:26px}.auth-card form{display:grid;gap:18px}.auth-card label{display:grid;gap:8px;font-size:13px;font-weight:550;color:var(--ink)}.auth-card input{min-height:49px;width:100%;border:1px solid var(--line-strong);border-radius:6px;padding:12px 14px;background:var(--panel);font:inherit;font-size:16px;color:inherit}.auth-card input::placeholder{color:var(--muted)}.auth-submit{width:100%;min-height:50px;margin-top:4px;justify-content:space-between}.auth-links{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}.auth-links button{min-height:44px;padding:0;font-size:12px}.auth-footnote{display:flex;align-items:flex-start;gap:7px;color:var(--muted);font-size:11px;line-height:1.8;border-top:1px solid var(--line);padding-top:20px;margin:22px 0 0}.auth-footnote svg{margin-top:2px}.auth-tagline{font-family:var(--font-word);font-size:12px;letter-spacing:1.4px;color:var(--muted);margin-top:25px}.auth-status{padding:20px 0;font-size:14px;color:var(--muted)}@keyframes card-in{0%{opacity:.5;translate:0 5px}to{opacity:1;translate:0 0}}@keyframes modal-in{0%{opacity:.7;translate:0 12px}to{opacity:1;translate:0 0}}@supports ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){.bottom-nav{background:var(--nav-glass);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}}@media(prefers-reduced-transparency:reduce){.bottom-nav{background:var(--panel);-webkit-backdrop-filter:none;backdrop-filter:none}}@media(hover:hover)and (pointer:fine){.icon-button:hover,.sound-button:hover,.filters button:hover,.bottom-nav button:hover:not(.active){background:var(--accent-soft)}.primary-button:hover:not(:disabled){background:var(--accent-dark)}.secondary-button:hover:not(:disabled),.rating:hover:not(:disabled){background:var(--accent-hover)}.text-button:hover:not(:disabled){color:var(--accent-dark)}.quick-add:hover,.recent-word:hover,.word-row:hover,.dictionary-row:hover{background:var(--accent-soft)}}.primary-button:active:not(:disabled),.secondary-button:active:not(:disabled),.icon-button:active:not(:disabled),.sound-button:active:not(:disabled),.bottom-nav button:active,.rating:active:not(:disabled),.quick-add:active,.recent-word:active{transform:translateY(1px)}@media(min-width:1200px){.app-shell{padding-top:9px}.page-heading{margin-top:43px}}@media(max-width:900px)and (min-width:768px){.auth-display{font-size:54px}.auth-intro{padding-right:28px}.auth-card{padding-right:0;padding-left:30px}.today-grid{gap:28px}.daily-aside{padding-left:24px}.hero-numbers{gap:25px}}@media(max-width:767px){.app-shell{padding:env(safe-area-inset-top,0px) max(21px,env(safe-area-inset-right)) calc(116px + var(--safe)) max(21px,env(safe-area-inset-left))}.app-header{height:82px;margin-bottom:28px}.brand{font-size:21px;gap:11px}.brand-mark{width:40px;height:40px}.brand small{font-size:9px;letter-spacing:.4px}.header-right{gap:7px}.connection{font-size:0;gap:0}.connection>span{width:6px;height:6px;margin-right:6px}.connection-offline{font-size:9px}.page-heading{margin-bottom:24px;gap:12px}.page-heading h1{font-size:26px;letter-spacing:-.8px}.eyebrow{font-size:11px;margin-bottom:9px}.date-stamp{font-size:8px;letter-spacing:1px;padding-left:17px}.date-stamp strong{font-size:31px}.today-grid{grid-template-columns:minmax(0,1fr);gap:27px;padding:22px 0 24px}.mini-label{font-size:11px}.plan-edition{font-size:8px;letter-spacing:1px}.hero-numbers{gap:34px;margin:19px 0 13px}.hero-numbers strong{font-size:89px;letter-spacing:-4px}.hero-numbers .fresh-count strong{font-size:47px}.hero-numbers>div>span{font-size:12px}.hero-numbers>i{height:54px}.hero-numbers small{font-size:12px;margin-left:8px}.hero-description{font-size:13px;margin:18px 0 23px;line-height:1.9;min-height:0}.start-button{width:100%;min-height:51px}.hero-bottom{font-size:11px;margin-top:17px;gap:7px}.daily-aside{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:23px}.day-progress-card{padding-bottom:19px}.day-total{margin-top:17px}.day-total strong{font-size:39px}.day-total>span{font-size:12px}.day-progress-card .small-rule{margin:18px 0 15px}.day-breakdown{font-size:12px}.day-progress-card>p{display:none}.quick-add{padding-top:18px;min-height:74px}.quick-add strong{font-size:13px}.below-heading{margin:25px 0 10px}.below-heading h2{font-size:16px}.welcome-wordbook{padding:22px 0;gap:12px;min-height:160px;align-items:flex-start}.welcome-icon{width:35px;height:44px;margin-top:3px}.welcome-icon svg{width:27px;height:27px}.welcome-wordbook h3{font-size:14px;margin-bottom:6px}.welcome-wordbook p{font-size:13px}.welcome-note{display:none}.local-note{font-size:11px;text-align:center;margin-top:24px;align-items:flex-start}.local-note svg{margin-top:1px}.recent-words{grid-template-columns:minmax(0,1fr)}.recent-word{grid-template-columns:minmax(0,.9fr) minmax(0,1fr) 16px;align-items:center;gap:12px;padding:18px 1px;min-height:74px}.recent-word span{font-size:22px}.recent-word small{grid-row:1;grid-column:2;font-size:12px;line-height:1.8;white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.recent-word svg{grid-column:3;grid-row:1}.bottom-nav{bottom:calc(10px + var(--safe));width:calc(100% - 24px);max-width:410px;border-radius:18px;padding:5px}.bottom-nav button{flex-direction:column;gap:5px;font-size:11px;min-height:56px;border-radius:12px}.heading-actions{gap:7px}.heading-actions .secondary-button{padding:10px 11px}.heading-actions .primary-button{padding:10px 12px}.heading-actions button{font-size:11px;min-height:44px;gap:5px}.wordbook-page .page-heading{gap:8px}.wordbook-page h1{font-size:25px}.heading-count{font-size:15px;margin-left:8px}.search-field{min-height:53px;padding:0 1px;gap:9px}.search-field input{font-size:16px;padding:15px 0}.search-field input::placeholder{font-size:12px}.filter-row{margin:17px 0 12px;gap:8px}.filter-row>span{font-size:11px}.filters{gap:1px}.filters button{font-size:12px;padding:8px 11px}.word-row{gap:11px;padding:16px 1px;min-height:88px}.row-word{width:39%;gap:7px}.row-word strong{font-size:21px}.row-word small{font-size:12px}.row-meaning{font-size:13px}.word-state{font-size:9px;padding:4px 5px}.word-row>svg{display:none}.wordbook-empty{padding:40px 10px;gap:15px}.dictionary-results .below-heading>span{font-size:10px}.stats-summary{padding:24px 0;margin-bottom:29px}.stats-summary>div{padding:0 18px;gap:13px}.stats-summary>div>span{font-size:12px}.stats-summary strong{font-size:35px}.stats-summary small{font-size:11px;margin-left:5px}.stats-leaf{width:44px;height:44px}.stats-leaf svg{width:28px;height:28px}.stats-grid{grid-template-columns:minmax(0,1fr);gap:30px}.feedback-card{padding:25px 0 0;border-left:0;border-top:1px solid var(--line)}.activity-chart{gap:11px}.feedback-card .form-footnote{margin-top:20px}.is-studying{padding-bottom:calc(170px + var(--safe))}.is-studying .app-header{margin-bottom:13px;height:76px}.study-top{gap:8px;margin-bottom:10px}.study-top .text-button{font-size:11px}.study-top>span{font-size:9px;gap:6px}.study-progress{margin-bottom:13px}.study-card{padding:0 4px 8px;min-height:355px}.state-label,.study-card-top .subtle{font-size:10px}.study-word{padding:43px 0 31px}.study-word h1{font-size:54px;letter-spacing:-1.5px}.pronunciation{font-size:14px;gap:10px;margin-top:17px}.recall-prompt{padding:17px 0 38px}.recall-prompt p{font-size:13px}.my-meaning{padding:21px 0 22px}.my-meaning p{font-size:18px;line-height:1.9}.my-meaning>span{font-size:12px;margin-bottom:11px}.word-details summary{min-height:55px;font-size:13px}.pair-top>p{font-size:17px}.pair>.muted{font-size:13px;line-height:1.9}.study-actions{position:fixed;left:0;right:0;bottom:0;padding:15px max(16px,env(safe-area-inset-right)) calc(12px + var(--safe)) max(16px,env(safe-area-inset-left));margin-top:0;background:var(--panel)}.rating-buttons{gap:7px;max-width:600px;margin:auto}.rating{border-radius:7px;min-height:65px;padding:10px 3px}.rating strong{font-size:14px}.rating small{font-size:11px}.rating-prompt{font-size:12px;margin-bottom:12px}.keyboard-help{display:none}.keyboard-help.is-saving{margin-top:10px}.reveal-button{max-width:600px;margin:auto;display:flex;font-size:14px;height:53px}.session-complete{padding:49px 5px 20px}.session-complete h1{font-size:27px}.session-complete .muted{font-size:12px}.completion-icon{width:72px;height:72px;margin-bottom:28px}.next-review{font-size:12px}.modal-shade{padding:20px 0 0;align-items:flex-end}.modal{border-radius:16px 16px 0 0;width:100%;max-height:var(--modal-height, calc(100dvh - 25px) );border-bottom:0}.modal-head{padding:17px 21px 13px}.modal-head h2{font-size:16px}.form-body{padding:22px 21px}.form-body>label{font-size:13px;margin-bottom:22px}.form-body label input,.form-body label textarea{font-size:16px;padding:12px 13px}.form-body label input::placeholder,.form-body label textarea::placeholder{font-size:12px}.form-body label input{min-height:49px}.lookup-button{font-size:11px;min-height:49px;padding:9px 11px}.modal-actions{padding:15px 21px calc(15px + var(--safe));border-radius:0}.modal-actions .primary-button{flex:1}.modal-actions .secondary-button{min-width:90px}.modal-actions button{font-size:12px;min-height:47px}.setting-buttons{gap:9px}.setting-buttons .secondary-button{font-size:12px;min-width:145px;padding:11px 14px}.import-text{font-size:16px}.preview-summary{padding:19px 13px}.preview-summary strong{font-size:29px}.import-preview{max-height:280px}.file-drop{padding:27px 15px}.toast{bottom:calc(88px + var(--safe));font-size:11px;padding:12px 16px;width:max-content;max-width:calc(100vw - 36px)}.is-studying .toast{bottom:calc(145px + var(--safe))}.view-word h1{font-size:34px}.auth-page{justify-content:flex-start;padding:max(32px,env(safe-area-inset-top)) max(24px,env(safe-area-inset-right)) max(24px,env(safe-area-inset-bottom)) max(24px,env(safe-area-inset-left))}.auth-layout{display:block;max-width:430px;border-top:0;padding:0 0 27px}.auth-intro{display:none}.auth-card{border-left:0;padding:0}.auth-card .brand{margin-bottom:44px}.auth-card h1{font-size:27px}.auth-card>.muted{font-size:13px;margin-bottom:27px}.auth-card form{gap:19px}.auth-tagline{margin-top:24px;font-size:11px}}@media(max-width:359px){.app-shell{padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}.brand small{display:none}.hero-numbers{gap:27px}.hero-numbers strong{font-size:80px}.hero-numbers .fresh-count strong{font-size:43px}.hero-bottom{font-size:10px}.page-heading h1{font-size:23px}.wordbook-page .page-heading{flex-wrap:wrap}.wordbook-page .heading-actions{width:100%;justify-content:flex-end}.heading-actions button{min-width:44px}.filters button{padding:8px 9px}.filter-row>span{font-size:10px}.stats-summary>div{padding:0 13px}.stats-summary strong{font-size:31px}.stats-summary small{margin-left:4px}.study-top .text-button{font-size:10px}.study-top>span{font-size:8px}.study-word h1{font-size:47px}.rating-buttons{gap:6px}.modal-actions{padding-left:16px;padding-right:16px}.setting-buttons{flex-direction:column}.auth-page{padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right))}.auth-card h1{font-size:25px}.auth-links button{font-size:11px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}