@import url('base.css');
:root{--bg:#f7f8fc;--paper:#fff;--ink:#242839;--muted:#8a8e9f;--line:#eceef5;--purple:#5855e8;--purple-soft:#eeedff;--teal:#138b80;--orange:#dd8a40;--green:#16826b;--red:#d45162;--shadow:0 12px 35px #28335707}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans CJK SC","Microsoft YaHei",sans-serif;font-size:14px;line-height:1.65}button,input,select,textarea{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button{border:0}button:disabled{opacity:.55;cursor:wait}button:focus-visible,a:focus-visible{outline:3px solid #bab8ff;outline-offset:3px}a{color:var(--purple)}h1,h2,h3,p{margin:0}button svg,svg.icon{height:21px;width:21px;vertical-align:middle;flex-shrink:0}svg{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}strong{font-weight:650}.app-shell{max-width:1080px;min-height:100vh;min-height:100dvh;margin:auto;padding:34px 40px 110px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:31px}.brand{display:flex;grid-gap:11px;gap:11px;align-items:center}.brand-mark{height:39px;width:39px;display:grid;place-items:center;border-radius:12px;background:var(--purple);color:#fff;font-size:22px;font-weight:700}.brand-name{font-size:18px;font-weight:750;letter-spacing:.5px}.brand-tag{font-size:10px;letter-spacing:2px;color:var(--muted)}.top-actions{display:flex;align-items:center;grid-gap:10px;gap:10px}.round{display:grid;place-items:center;width:39px;height:39px;border-radius:50%;background:#fff;border:1px solid var(--line)}.avatar{background:var(--purple-soft);color:var(--purple);border:0;font-size:14px;font-weight:700}.greeting{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.eyebrow{font-size:11px;letter-spacing:1.8px;color:var(--muted);font-weight:600}.greeting h1{font-size:27px;letter-spacing:-1px;margin:5px 0}.greeting p{font-size:13px;color:var(--muted)}.date-chip{font-size:12px;padding:7px 12px;border:1px solid var(--line);border-radius:20px;background:#fff;white-space:nowrap}.dashboard-grid{display:grid;grid-template-columns:1.45fr 1fr;grid-gap:20px;gap:20px}.daily-card{border-radius:23px;background:var(--purple);color:white;padding:25px 28px;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;min-height:248px}.daily-card:after{content:"";width:200px;height:200px;border:35px solid #ffffff08;border-radius:50%;position:absolute;right:-80px;top:-90px;pointer-events:none}.daily-top{display:flex;justify-content:space-between;align-items:center;position:relative;z-index:1}.daily-card .eyebrow{color:#d5d3ff}.daily-card h2{font-size:22px;margin:4px 0 7px}.daily-card p{color:#dcdcff;font-size:12px}.ring{height:110px;width:110px;position:relative;flex-shrink:0}.ring svg{width:110px;height:110px;transform:rotate(-90deg);stroke-width:7}.ring .track{stroke:#ffffff26}.ring .fill{stroke:#fff;stroke-linecap:round}.ring-label{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;line-height:1.3}.ring-label b{font-size:28px}.ring-label span{font-size:10px;color:#d3d1ff;margin-top:6px}.daily-bottom{display:flex;justify-content:space-between;grid-gap:12px;gap:12px;align-items:center;margin-top:22px;position:relative;z-index:1}.daily-bottom span{font-size:11px;color:#dcdcff}.white-btn{border-radius:11px;background:white;color:var(--purple);padding:11px 17px;font-size:13px;font-weight:700;display:flex;grid-gap:12px;gap:12px;align-items:center;white-space:nowrap}.white-btn svg{width:17px}.stats-card{background:#fff;border:1px solid var(--line);border-radius:23px;padding:23px;display:flex;flex-direction:column;justify-content:space-between}.stats-title{display:flex;grid-gap:8px;gap:8px;align-items:center;color:#666b80;font-size:13px}.stats-title svg{color:var(--orange);width:19px;height:19px}.streak-count{font-size:30px;font-weight:750;line-height:1.3;margin:12px 0 15px}.streak-count span{font-size:12px;color:var(--muted);font-weight:400;margin-left:7px}.week{display:flex;justify-content:space-between;grid-gap:6px;gap:6px}.week-day{display:flex;flex-direction:column;align-items:center;grid-gap:6px;gap:6px;font-size:10px;color:var(--muted)}.day-circle{width:27px;height:27px;background:#f5f5fa;display:grid;place-items:center;border-radius:50%;font-size:10px}.day-circle.done{background:var(--purple);color:#fff}.day-circle.today{border:1.5px solid var(--purple);color:var(--purple)}.day-circle.done.today{color:#fff}.section-title{display:flex;justify-content:space-between;align-items:center;margin:29px 0 15px}.section-title h2{font-size:17px}.section-title span,.text-btn{font-size:12px;color:var(--muted)}.text-btn{background:transparent;padding:4px 0}.book-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:15px;gap:15px}.book-card{text-align:left;background:#fff;border:1px solid var(--line);border-radius:18px;padding:19px;position:relative;transition:border-color .2s,transform .2s}.book-card.selected{border:1.5px solid #a6a3ff;box-shadow:var(--shadow);padding:18.5px}.book-card:hover{transform:translateY(-2px)}.book-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:17px}.book-cover{width:49px;height:62px;border-radius:4px 10px 10px 4px;background:#eeedff;color:var(--purple);padding:11px 6px 8px 12px;position:relative;box-shadow:inset 4px 0 #0000000b}.book-cover:after{content:"";position:absolute;bottom:9px;left:12px;width:21px;height:3px;background:currentColor;opacity:.3}.book-cover b{font-size:11px;letter-spacing:.3px;display:block;line-height:1.3}.book-cover small{font-size:7px;opacity:.6}.book-cover.teal{background:#e1f5ee;color:var(--teal)}.book-cover.orange{background:#fff0df;color:var(--orange)}.selected-tag{font-size:10px;background:var(--purple-soft);color:var(--purple);border-radius:5px;padding:2px 6px}.book-card h3{font-size:16px;letter-spacing:.3px}.book-card .subtitle{font-size:11px;color:var(--muted);margin:2px 0 15px;white-space:nowrap}.progress-track{height:4px;border-radius:9px;background:#f0f0f6;overflow:hidden}.progress-fill{background:var(--purple);height:100%;border-radius:9px}.book-card.teal .progress-fill{background:var(--teal)}.book-card.orange .progress-fill{background:var(--orange)}.book-count{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin-top:7px}.book-count b{color:#666b80;font-weight:500}.review-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:15px;gap:15px}.review-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:17px 20px;display:flex;align-items:center;grid-gap:13px;gap:13px;text-align:left}.review-icon{width:41px;height:41px;display:grid;place-items:center;border-radius:12px;background:#fff0e7;color:var(--orange)}.review-icon.teal{background:#e6f4f1;color:var(--teal)}.review-card h3{font-size:13px}.review-card p{font-size:11px;color:var(--muted);margin-top:3px}.review-card>svg{margin-left:auto;color:#a0a3b2;width:16px}.tip-card{margin-top:23px;font-size:11px;color:#8f92a4;display:flex;grid-gap:8px;gap:8px;align-items:flex-start;padding:0 2px}.tip-card svg{width:15px;height:15px;margin-top:2px}.bottom-nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);max-width:1080px;width:100%;height:76px;padding:8px 50px;padding:8px 50px max(8px,env(safe-area-inset-bottom));background:#ffffffed;border-top:1px solid var(--line);display:flex;justify-content:space-around;z-index:15;backdrop-filter:blur(14px)}.nav-item{width:70px;background:transparent;display:flex;flex-direction:column;grid-gap:3px;gap:3px;align-items:center;justify-content:center;color:#a0a4b4;font-size:10px}.nav-item.active{color:var(--purple)}.nav-item.active svg{stroke-width:2.3}.nav-item svg{width:22px;height:22px}.sync-dot{width:6px;height:6px;background:#a3abb8;display:inline-block;border-radius:50%;margin-right:5px}.sync-dot.online{background:var(--green)}.sync-label{font-size:10px;color:var(--muted)}.loading{min-height:80vh;display:flex;flex-direction:column;align-items:center;justify-content:center;grid-gap:12px;gap:12px}.loading p{font-size:12px;color:var(--muted)}.page-title{margin-bottom:22px}.page-title h1{font-size:25px}.page-title p{color:var(--muted);font-size:12px;margin-top:5px}.panel{padding:22px;border:1px solid var(--line);background:#fff;border-radius:18px;margin-bottom:17px}.mode-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:10px;gap:10px}.mode-btn{display:flex;flex-direction:column;grid-gap:7px;gap:7px;align-items:center;justify-content:center;padding:17px 10px;border:1px solid var(--line);background:#fff;border-radius:12px;color:#777d91;font-size:12px}.mode-btn.active{background:var(--purple-soft);border-color:#b7b4ff;color:var(--purple)}.mode-btn svg{width:24px;height:24px}.searchbox{display:flex;grid-gap:10px;gap:10px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 15px;margin:16px 0}.searchbox svg{width:19px;color:var(--muted)}.searchbox input{border:0;outline:0;width:100%;background:transparent;color:var(--ink)}.filter-row{display:flex;grid-gap:8px;gap:8px;flex-wrap:wrap;margin-bottom:15px}.pill{background:#eeeff5;color:#85899e;border-radius:8px;padding:6px 12px;font-size:11px}.pill.active{background:var(--purple-soft);color:var(--purple)}.word-list{background:#fff;border:1px solid var(--line);border-radius:15px;overflow:hidden}.word-row{display:flex;width:100%;text-align:left;align-items:center;padding:15px 18px;background:#fff;border-bottom:1px solid var(--line);grid-gap:13px;gap:13px}.word-row:last-child{border:0}.word-row .word-name{font-size:15px;font-weight:650}.word-row .word-meaning{color:var(--muted);font-size:11px;margin-top:2px}.word-row .word-status{margin-left:auto;font-size:10px;color:var(--teal);white-space:nowrap}.word-row svg{width:15px;color:#aaa}.empty{padding:40px 20px;text-align:center;color:var(--muted);font-size:12px}.more-btn{display:block;margin:18px auto;background:transparent;color:var(--purple);font-size:12px}.study-shell{max-width:720px;margin:auto;padding:26px 28px 40px;min-height:100vh;min-height:100dvh}.study-header{display:flex;grid-gap:16px;gap:16px;align-items:center;margin-bottom:21px}.study-header .round{width:34px;height:34px}.session-track{flex:1;background:#e7e8f1;height:6px;border-radius:10px;overflow:hidden}.session-track div{height:100%;background:var(--purple);border-radius:10px}.session-count{font-size:11px;color:var(--muted);white-space:nowrap}.study-label{display:flex;justify-content:space-between;margin:25px 0 20px;color:#9094a6;font-size:11px}.study-label b{font-weight:500;color:var(--purple)}.question-card{text-align:center;padding:27px 15px 25px;background:#fff;border:1px solid var(--line);border-radius:20px;margin-bottom:22px;min-height:205px;display:flex;flex-direction:column;align-items:center;justify-content:center}.question-word{font-size:37px;font-weight:750;letter-spacing:-.8px;word-break:break-word;line-height:1.4}.phonetic{font-size:13px;color:var(--muted);margin-top:7px;font-family:Georgia,serif}.question-tools{display:flex;grid-gap:9px;gap:9px;justify-content:center;margin-top:17px}.tool-btn{display:flex;grid-gap:6px;gap:6px;align-items:center;justify-content:center;font-size:11px;color:#7d81a0;padding:6px 10px;border:1px solid #eeedf8;background:#fafaff;border-radius:20px}.tool-btn svg{width:15px;height:15px}.tool-btn.saved{color:var(--orange)}.question-hint{font-size:11px;color:#9195a5;margin-bottom:12px;display:flex;align-items:center;grid-gap:6px;gap:6px}.choice-list{display:flex;flex-direction:column;grid-gap:11px;gap:11px}.choice{display:flex;align-items:center;grid-gap:13px;gap:13px;padding:16px 18px;border-radius:13px;border:1.5px solid var(--line);background:#fff;text-align:left;font-size:14px;min-height:59px;transition:background .15s}.choice-letter{height:26px;width:26px;border-radius:8px;background:#f4f4fa;color:#9195a7;display:grid;place-items:center;font-size:11px;flex-shrink:0}.choice.correct{border-color:#6cba9f;background:#edf9f3;color:var(--green)}.choice.correct .choice-letter{color:white;background:var(--green)}.choice.wrong{border-color:#e0a1ab;background:#fff0f1;color:var(--red)}.choice.wrong .choice-letter{background:var(--red);color:white}.choice svg{margin-left:auto;width:18px}.choice:disabled{opacity:1;cursor:default}.answer-panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:19px;margin-top:20px;animation:slideup .2s ease}.feedback-title{display:flex;align-items:center;grid-gap:7px;gap:7px;font-size:14px;font-weight:650;color:var(--green);margin-bottom:12px}.feedback-title.wrong{color:var(--red)}.definition{font-size:12px;color:#6f758b;white-space:pre-line;line-height:1.9}.definition .pos{color:var(--purple);font-size:11px}.example-box{border-left:3px solid #bdbaff;background:#f8f8ff;padding:12px 14px;margin-top:14px;border-radius:0 9px 9px 0}.example-en{font-size:14px;line-height:1.8;color:#454c69}.example-cn{font-size:12px;color:#858aa0;margin-top:6px}.source-note{font-size:9px;color:#a2a6b6;line-height:1.7;margin-top:8px;overflow-wrap:anywhere}.other-options{border-top:1px solid var(--line);margin-top:13px;padding-top:10px;display:flex;flex-wrap:wrap;grid-gap:5px 10px;gap:5px 10px;font-size:10px;color:#969bad}.primary{background:var(--purple);color:white;border-radius:12px;padding:13px 20px;font-weight:650;font-size:13px;text-align:center;display:flex;align-items:center;grid-gap:10px;gap:10px;justify-content:center}.primary.full{width:100%}.secondary{background:#f0effb;color:var(--purple);border-radius:11px;padding:12px 17px;font-size:12px}.feedback-actions{display:flex;grid-gap:10px;gap:10px;margin-top:18px}.feedback-actions .primary{flex:1}.study-bottom-hint{text-align:center;color:#a2a6b4;font-size:10px;margin-top:22px}.cloze-sentence{font-size:21px;line-height:1.8;text-align:left;max-width:100%;overflow-wrap:anywhere}.meaning-prompt{font-size:22px;line-height:1.6}.small-hint{font-size:11px;color:#a0a3b1;margin-top:12px}.spelling-input{width:100%;padding:17px;border:1.5px solid #d7d5f6;border-radius:12px;outline:0;font-size:21px;margin-bottom:14px;background:#fff}.spelling-input:focus{border-color:var(--purple)}.listen-main{width:69px;height:69px;border-radius:50%;background:var(--purple-soft);color:var(--purple);margin:10px auto;display:grid;place-items:center}.listen-main svg{width:30px;height:30px}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:12px;gap:12px;margin-bottom:20px}.metric-box{background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px;text-align:center}.metric-box b{display:block;font-size:25px;color:var(--purple)}.metric-box span{font-size:11px;color:var(--muted)}.calendar{display:grid;grid-template-columns:repeat(7,1fr);grid-gap:9px;gap:9px}.calendar-cell{min-height:39px;display:flex;align-items:center;justify-content:center;border-radius:9px;font-size:12px;color:#a3a7b6;background:#f7f8fc}.calendar-cell.header{background:transparent;min-height:20px;font-size:10px}.calendar-cell.complete{background:var(--purple-soft);color:var(--purple);font-weight:700}.calendar-cell.current{outline:1.5px solid #b8b5ff}.calendar-cell.blank{visibility:hidden}.setting-row{display:flex;grid-gap:14px;gap:14px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}.setting-row:last-child{border:0}.setting-row svg{color:#858aa5;width:21px}.setting-row div{flex:1}.setting-row label,.setting-row h3{display:block;font-size:13px;font-weight:550}.setting-row p{font-size:10px;color:var(--muted);margin-top:3px}.setting-row select{border:1px solid var(--line);border-radius:8px;background:#fafbff;padding:7px 10px;color:var(--purple);font-size:12px}.row-button{display:flex;width:100%;background:transparent;align-items:center;grid-gap:14px;gap:14px;text-align:left;padding:0}.row-button>svg:last-child{margin-left:auto;width:15px}.account-panel{background:linear-gradient(130deg,#eeedff,#f8f8ff);border:1px solid #e3e1ff;border-radius:18px;padding:23px;display:flex;align-items:center;grid-gap:15px;gap:15px;margin-bottom:20px}.account-panel .avatar{width:48px;height:48px;display:grid;place-items:center;border-radius:15px;font-size:19px;background:white}.account-panel h2{font-size:17px}.account-panel p{font-size:11px;color:#8c8aac;margin-top:3px}.account-panel button{margin-left:auto;font-size:11px}.modal-backdrop{position:fixed;inset:0;background:#20243b5e;z-index:30;display:flex;align-items:center;justify-content:center;padding:24px;backdrop-filter:blur(3px)}.modal{background:#fff;border-radius:22px;width:100%;max-width:460px;padding:25px;max-height:90vh;max-height:90dvh;overflow:auto;box-shadow:0 30px 80px #21253c30}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:17px}.modal-header h2{font-size:18px}.modal-header button{background:#f5f5fa;border-radius:50%;width:29px;height:29px;color:#8c90a3;display:grid;place-items:center}.modal p{font-size:12px;color:var(--muted);margin:7px 0 17px}.field{display:block;margin:15px 0}.field>span{display:block;font-size:11px;color:#777d93;margin-bottom:6px}.field input,.field select,.field textarea{width:100%;border:1px solid #dddfea;border-radius:10px;padding:12px;color:var(--ink);background:#fcfcff;outline:0}.field input:focus{border-color:var(--purple)}.check-row{font-size:11px;color:#85899b;display:flex;align-items:flex-start;grid-gap:7px;gap:7px;margin:12px 0 18px}.check-row input{margin-top:4px;accent-color:var(--purple)}.modal-foot{text-align:center;font-size:11px;margin-top:15px;color:#999daf}.modal-foot button{background:transparent;color:var(--purple);padding:5px}.error-text{font-size:11px;color:var(--red);margin:10px 0;white-space:pre-wrap}.auth-tabs{display:flex;background:#f4f4fa;border-radius:9px;padding:4px;grid-gap:4px;gap:4px;margin-bottom:16px}.auth-tabs button{background:transparent;border-radius:7px;padding:7px;flex:1;color:#9195a5;font-size:12px}.auth-tabs button.active{background:white;color:var(--purple);box-shadow:0 2px 6px #22224408}.completion{text-align:center;padding:40px 15px}.completion-badge{height:100px;width:100px;border-radius:30px;background:var(--purple-soft);color:var(--purple);display:grid;place-items:center;margin:0 auto 24px;transform:rotate(-7deg)}.completion-badge svg{width:48px;height:48px;transform:rotate(7deg)}.completion h1{font-size:26px;margin:0 0 8px}.completion>p{font-size:12px;color:var(--muted);margin-bottom:25px}.completion .stats-grid{margin-top:28px}.completion .primary{margin-top:20px}.completion .secondary{margin-top:13px;width:100%}#toast{position:fixed;bottom:95px;left:50%;transform:translate(-50%,20px);background:#2c3045;color:#fff;max-width:90%;padding:11px 18px;border-radius:11px;font-size:12px;opacity:0;pointer-events:none;transition:.2s;z-index:90;text-align:center}#toast.show{opacity:1;transform:translate(-50%,0)}.notice{padding:12px 15px;border-radius:11px;background:#fff7e9;color:#a7773e;font-size:11px;margin-bottom:15px}.link-list{font-size:11px;line-height:1.9;color:#888da1}.link-list li{margin-bottom:10px}.sentence-highlight{color:var(--purple);font-weight:650}.admin-shell{max-width:1180px;margin:auto;padding:30px}.admin-nav{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}.admin-table{width:100%;border-collapse:collapse;font-size:12px}.admin-table th,.admin-table td{padding:12px 10px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}.admin-table th{font-size:10px;color:var(--muted);font-weight:500}.table-scroll{overflow:auto}.admin-shell .stats-grid{grid-template-columns:repeat(4,1fr)}.admin-tabs{display:flex;grid-gap:10px;gap:10px;margin:20px 0}.inline-form{display:flex;grid-gap:12px;gap:12px;align-items:center}.inline-form input,.inline-form select{padding:10px;border:1px solid var(--line);border-radius:9px;background:white}.inline-form input{flex:1;min-width:0}.pagination{display:flex;justify-content:space-between;margin-top:15px}#modal-root .definition{margin-top:15px}.family-list{font-size:11px;color:#8e93a9;margin-top:13px;line-height:1.8;overflow-wrap:anywhere}
@keyframes slideup{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:850px){.study-shell{padding-top:40px}.study-shell .question-card{min-height:230px}.choice-list{display:grid;grid-template-columns:1fr 1fr}.bottom-nav{border-left:1px solid var(--line);border-right:1px solid var(--line);border-radius:18px 18px 0 0}.greeting h1{font-size:30px}.stats-card{padding:25px 30px}}
@media(max-width:650px){.app-shell{padding:22px 21px 103px}.topbar{margin-bottom:25px}.brand-name{font-size:16px}.brand-tag{font-size:8px;letter-spacing:1.6px}.brand-mark{width:35px;height:35px;font-size:20px}.round{width:35px;height:35px}.greeting h1{font-size:25px}.greeting p{font-size:11px}.date-chip{font-size:10px;padding:6px 9px}.dashboard-grid{grid-template-columns:1fr;grid-gap:14px;gap:14px}.daily-card{padding:20px 22px;min-height:217px}.daily-card h2{font-size:21px}.daily-bottom{margin-top:16px}.stats-card{padding:16px 19px;display:grid;grid-template-columns:105px 1fr;grid-gap:0 10px;gap:0 10px;align-items:center}.stats-title{font-size:11px;grid-column:1;grid-row:1}.streak-count{font-size:24px;margin:4px 0 0;grid-column:1;grid-row:2}.streak-count span{font-size:10px}.week{grid-column:2;grid-row:1/3;grid-gap:4px;gap:4px}.day-circle{width:23px;height:23px}.week-day{font-size:9px;grid-gap:5px;gap:5px}.section-title{margin:24px 0 13px}.section-title h2{font-size:16px}.section-title span{font-size:10px}.book-grid{grid-gap:9px;gap:9px}.book-card{padding:12px 10px;border-radius:13px}.book-card.selected{padding:11.5px 9.5px}.book-cover{width:41px;height:54px;padding:9px 5px 6px 9px;border-radius:3px 8px 8px 3px}.book-cover b{font-size:9px}.book-cover small{font-size:6px}.book-cover:after{left:9px;bottom:8px;width:17px}.book-top{margin-bottom:12px;min-height:54px}.selected-tag{font-size:8px;padding:1px 4px;position:absolute;top:11px;right:7px;writing-mode:vertical-rl;letter-spacing:1px;background:transparent}.book-card h3{font-size:12px;letter-spacing:0}.book-card .subtitle{font-size:9px;margin-bottom:12px;white-space:normal;min-height:26px;line-height:1.5}.book-count{font-size:8px;grid-gap:2px;gap:2px}.review-card{padding:13px 11px;grid-gap:9px;gap:9px;border-radius:13px}.review-icon{width:33px;height:33px;border-radius:10px}.review-icon svg{width:18px;height:18px}.review-card h3{font-size:12px}.review-card p{font-size:9px}.review-card>svg{width:13px}.review-grid{grid-gap:10px;gap:10px}.tip-card{font-size:10px;margin-top:19px}.bottom-nav{height:73px;padding-left:12px;padding-right:12px}.mode-grid{grid-template-columns:repeat(2,1fr)}.study-shell{padding:20px 21px 35px}.study-label{margin-top:22px}.question-word{font-size:33px}.question-card{min-height:192px;padding:24px 12px}.choice{font-size:13px;padding:13px 15px;min-height:57px}.stats-grid{grid-gap:9px;gap:9px}.metric-box{padding:15px 8px}.metric-box b{font-size:23px}.metric-box span{font-size:10px}.panel{padding:17px}.account-panel{padding:18px}.account-panel h2{font-size:16px}.modal-backdrop{padding:18px}.modal{padding:22px}.admin-shell{padding:20px}.admin-shell .stats-grid{grid-template-columns:1fr 1fr}.inline-form{flex-wrap:wrap}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
.book-cover small{display:block;white-space:nowrap;font-size:6px;line-height:1.35;margin-top:4px}
@media(max-width:650px){.book-cover small{font-size:5px}}
.daily-top>div:first-child{min-width:0;flex:1}.daily-top .ring{flex:0 0 110px}
@media(max-width:359px){.stats-card{grid-template-columns:1fr auto;grid-gap:7px;gap:7px}.stats-title{grid-column:1;grid-row:1}.streak-count{grid-column:2;grid-row:1;margin:0;font-size:21px}.streak-count span{font-size:9px}.week{grid-column:1 / 3;grid-row:2;margin-top:7px}.daily-card h2{font-size:19px}.daily-card .eyebrow{font-size:9px;letter-spacing:1px}.daily-bottom{grid-gap:8px;gap:8px}.white-btn{padding:10px 12px}.review-card>svg{display:none}}

/* Margin fallback only when flex gap is genuinely absent. Grid gap stays native. */
.ring-label,.modal-backdrop{top:0;right:0;bottom:0;left:0}
.legacy-flex-gap .brand>*+*{margin-left:11px}.legacy-flex-gap .top-actions>*+*{margin-left:10px}
.legacy-flex-gap .study-header>*+*{margin-left:16px}.legacy-flex-gap .daily-bottom>*+*{margin-left:12px}
.legacy-flex-gap .question-tools>*+*{margin-left:9px}.legacy-flex-gap .filter-row>*+*{margin-left:8px}
.legacy-flex-gap .feedback-actions>*+*{margin-left:10px}.legacy-flex-gap .setting-row>*+*{margin-left:14px}
.legacy-flex-gap .row-button>*+*{margin-left:14px}.legacy-flex-gap .account-panel>*+*{margin-left:15px}
.legacy-flex-gap .stats-title>*+*{margin-left:8px}.legacy-flex-gap .tip-card>*+*{margin-left:8px}
.legacy-flex-gap .admin-tabs>*+*{margin-left:10px}.legacy-flex-gap .inline-form>*+*{margin-left:12px}
.legacy-flex-gap .white-btn svg{margin-left:12px}.legacy-flex-gap .review-card>*+*{margin-left:13px}
.legacy-flex-gap .review-card>svg:last-child,.legacy-flex-gap .row-button>svg:last-child{margin-left:auto}
.legacy-flex-gap .week-day>*+*{margin-top:6px}.legacy-flex-gap .nav-item>*+*{margin-top:3px}
.legacy-flex-gap .loading>*+*{margin-top:12px}.compat-diagnostics{width:90%;max-width:600px;min-height:130px;resize:vertical;border:1px solid #dddfea;border-radius:10px;padding:12px;font-size:11px;color:#6f758b;background:#fff}
@media(max-width:849px){.legacy-flex-gap .choice-list>*+*{margin-top:11px}}
@media(max-width:650px){.legacy-flex-gap .review-card>*+*{margin-left:9px}}
@media(max-width:359px){.legacy-flex-gap .daily-bottom>*+*{margin-left:8px}}