:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#0b1633;background:#f6f9ff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}.app-root{--bg: #f6f9ff;--bg-soft: #edf5ff;--panel: rgba(255, 255, 255, .84);--panel-solid: #ffffff;--panel-muted: #f3f7ff;--line: rgba(142, 158, 190, .28);--text: #071330;--muted: #526179;--weak: #8a98ad;--primary: #2f7cff;--primary-2: #26c6da;--success: #21c98b;--danger: #ff4d5f;--warning: #f59e0b;--purple: #7148ff;min-height:100vh;color:var(--text);background:radial-gradient(circle at 80% 8%,rgba(47,124,255,.12),transparent 26rem),linear-gradient(180deg,#fbfdff 0%,var(--bg) 100%)}.app-root.dark{--bg: #050b18;--bg-soft: #071225;--panel: rgba(13, 26, 49, .78);--panel-solid: #0b1629;--panel-muted: #101f37;--line: rgba(111, 137, 180, .26);--text: #f6fbff;--muted: #a7b4cc;--weak: #6d7c97;--primary: #2296ff;--primary-2: #20e5e7;--success: #20e7a1;--danger: #ff5267;--warning: #f7a72d;--purple: #7657ff;background:radial-gradient(circle at 78% 6%,rgba(36,109,255,.24),transparent 30rem),radial-gradient(circle at 12% 100%,rgba(30,229,231,.1),transparent 28rem),#030914}.practice-active{background:#050b18}.muted,.path-line,.workspace-top p,.section-title p,.placeholder-page p{color:var(--muted)}.auth-screen{width:min(440px,100%);min-height:100vh;margin:0 auto;padding:24px;display:flex;flex-direction:column;justify-content:center;align-items:stretch}.brand-row{display:inline-flex;align-items:center;gap:10px}.brand-mark{width:40px;height:40px;display:block;flex:0 0 auto;object-fit:contain}.brand-name{min-width:0;display:grid;gap:1px}.brand-name strong{color:var(--text);font-size:17px;line-height:1.2}.brand-name small{color:var(--muted);font-size:10px;line-height:1.2}.auth-screen h1{margin:22px 0 8px;font-size:42px;line-height:1.08;letter-spacing:0}.auth-card,.glass-panel,.result-card,.notice-panel,.cta-panel{border:1px solid var(--line);background:var(--panel);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 22px 60px #00102d1a}.dark .auth-card,.dark .glass-panel,.dark .result-card,.dark .notice-panel,.dark .cta-panel{box-shadow:0 22px 70px #00000047}.auth-card{margin-top:28px;padding:18px;border-radius:22px;display:grid;gap:14px}label{display:grid;gap:8px}label span,.stepper span{color:var(--muted);font-size:13px;font-weight:700}input{width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;outline:none;color:var(--text);background:var(--panel-solid);transition:border-color .18s ease,box-shadow .18s ease}input:focus{border-color:var(--primary);box-shadow:0 0 0 4px #2f7cff29}.primary-button,.secondary-button,.danger-button,.text-button,.round-button,.nav-item,.node-row,.wordbook-card,.mode-button,.profile-button,.hero-button,.outline-hero-button{border:0}.primary-button,.secondary-button,.danger-button{min-height:44px;border-radius:12px;padding:0 18px;font-weight:800}.primary-button{color:#fff;background:linear-gradient(135deg,var(--primary),#5b2cff);box-shadow:0 14px 30px #2f7cff47}.secondary-button{color:var(--text);background:var(--panel-muted);border:1px solid var(--line)}.danger-button{color:var(--danger);background:#ff4d5f1a;border:1px solid rgba(255,77,95,.24)}.text-button{color:var(--primary);background:transparent;font-weight:800}.modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;padding:24px;display:grid;place-items:center;background:#03081275;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.auth-required-dialog{width:min(460px,100%);padding:28px 30px;border:1px solid var(--line);border-radius:18px;display:grid;gap:16px;text-align:left;background:var(--panel-solid);box-shadow:0 28px 80px #00102d38}.auth-required-dialog h2{margin:0;font-size:24px;letter-spacing:0}.auth-required-dialog p{margin:0;color:var(--muted);line-height:1.7}.dialog-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:4px}.dialog-actions .primary-button,.dialog-actions .secondary-button{width:100%}.practice-mode-mask{background:#020711a3;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.practice-mode-dialog{width:min(720px,100%);padding:24px;border:1px solid var(--line);border-radius:18px;display:grid;gap:22px;background:var(--panel-solid);box-shadow:0 30px 90px #000a234d}.practice-mode-dialog>header,.practice-mode-dialog>footer{display:flex;align-items:center;justify-content:space-between;gap:14px}.practice-mode-dialog h2,.practice-mode-dialog p{margin:0}.practice-mode-dialog h2{margin-top:4px;font-size:24px;letter-spacing:0}.practice-mode-options{display:grid;grid-template-columns:1fr 1fr;gap:12px}.practice-mode-option{position:relative;min-height:160px;padding:20px;border:1px solid var(--line);border-radius:12px;display:grid;grid-template-columns:auto 1fr;gap:16px;align-content:center;color:var(--text);text-align:left;background:var(--panel-muted);box-shadow:none}.practice-mode-option:hover,.practice-mode-option.selected{border-color:#2f7cffad;background:color-mix(in srgb,var(--panel-muted) 78%,var(--primary) 22%);box-shadow:inset 0 0 0 1px #2f7cff33}.practice-mode-option strong,.practice-mode-option small{display:block}.practice-mode-option strong{margin-bottom:8px;font-size:19px;letter-spacing:0}.practice-mode-option small{color:var(--muted);line-height:1.6}.practice-mode-option i{position:absolute;top:12px;right:12px;color:var(--primary);font-size:12px;font-style:normal;font-weight:900}.practice-mode-icon{width:52px;height:52px;border-radius:12px;display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,#22c7f2,#5b38ff);font-size:20px;font-weight:950}.practice-mode-dialog>footer{justify-content:flex-end}.practice-mode-dialog>footer button{min-width:150px}.generation-settings-mask{background:#020711a8;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.generation-settings-dialog{width:min(760px,100%);max-height:calc(100vh - 48px);padding:24px;border:1px solid var(--line);border-radius:16px;display:grid;gap:16px;overflow-y:auto;background:var(--panel-solid);box-shadow:0 30px 90px #000a2352}.generation-settings-dialog>header,.generation-settings-dialog>footer{display:flex;align-items:center;justify-content:space-between;gap:14px}.generation-settings-dialog h2,.generation-settings-dialog p{margin:0}.generation-settings-dialog h2{margin:4px 0 6px;font-size:24px;letter-spacing:0}.generation-settings-dialog header>div>p:last-child,.generation-setting-heading span{color:var(--muted);line-height:1.6}.generation-setting-section{padding:18px;border:1px solid var(--line);border-radius:12px;background:var(--panel-muted)}.generation-setting-heading{display:flex;align-items:center;justify-content:space-between;gap:18px}.generation-setting-heading strong,.generation-setting-heading span{display:block}.generation-setting-heading strong{margin-bottom:5px;font-size:17px;letter-spacing:0}.generation-setting-heading span{font-size:13px}.generation-difficulty-options{margin-top:14px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.generation-difficulty-options button{min-height:82px;padding:14px;border:1px solid var(--line);border-radius:10px;display:grid;align-content:center;gap:6px;color:var(--text);text-align:left;background:var(--panel-solid);box-shadow:none}.generation-difficulty-options button:hover,.generation-difficulty-options button.selected{border-color:#2f7cffa8;background:color-mix(in srgb,var(--panel-solid) 82%,var(--primary) 18%);box-shadow:inset 0 0 0 1px #2f7cff2e}.generation-difficulty-options strong,.generation-difficulty-options small{display:block}.generation-difficulty-options strong{font-size:16px;letter-spacing:0}.generation-difficulty-options small{color:var(--muted);line-height:1.45}.generation-count-control{display:grid;grid-template-columns:38px 74px 38px;gap:8px}.generation-count-control button,.generation-count-control input{height:38px;border:1px solid var(--line);border-radius:9px;color:var(--text);text-align:center;background:var(--panel-solid);box-shadow:none;font-weight:900}.generation-count-control input{width:74px;padding:0 6px}.generation-rule-list{margin:14px 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:10px 16px;list-style:none}.generation-rule-list li{color:var(--text);line-height:1.55}.generation-rule-list li:before{content:"✓";margin-right:8px;color:var(--success);font-weight:900}.generation-blocking-reason{margin-top:14px!important;padding:10px 12px;border:1px solid rgba(255,190,51,.28);border-radius:9px;color:#ffbe33;background:#ffbe3314;line-height:1.5}.generation-settings-dialog>footer{justify-content:flex-end}.generation-settings-dialog>footer button{min-width:150px}.app-layout{min-height:100vh;display:grid;grid-template-columns:auto 1fr}.sidebar{position:sticky;top:0;width:292px;height:100vh;padding:24px 18px;display:grid;grid-template-rows:auto 1fr auto;gap:28px;border-right:1px solid var(--line);background:#ffffff9e;-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);transition:width .2s ease}.dark .sidebar{background:#040c1ac7}.sidebar.collapsed{width:88px}.sidebar-brand,.workspace-top,.top-actions,.section-title,.inline-actions,.toolbar-row{display:flex;align-items:center}.sidebar-brand,.workspace-top{justify-content:space-between;gap:16px}.round-button{width:38px;height:38px;border-radius:50%;color:var(--text);background:var(--panel-muted);border:1px solid var(--line)}.nav-list{display:grid;align-content:start;gap:10px}.nav-item{min-height:52px;padding:0 16px;border-radius:13px;display:flex;align-items:center;gap:14px;color:var(--text);background:transparent;font-weight:800;text-align:left}.nav-item.active{color:#fff;background:linear-gradient(135deg,#22a5ff,#5a23df);box-shadow:0 18px 36px #2f7cff3d}.nav-icon{width:22px;text-align:center;font-size:22px}.user-card{width:100%;min-height:86px;padding:14px;border:1px solid var(--line);border-radius:18px;display:flex;align-items:center;gap:12px;color:var(--text);text-align:left;background:var(--panel)}.user-menu{position:relative}.avatar{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#9fffe0,#d7ecff);font-size:30px}.avatar.small{width:42px;height:42px;font-size:22px}.user-card div:last-child{display:grid;gap:4px}.user-card span{width:max-content;padding:2px 8px;border-radius:999px;color:#009b82;background:#20e7a124;font-size:12px;font-weight:800}.user-card.guest span{width:auto;padding:0;color:var(--muted);background:transparent;font-weight:600}.user-card.guest:hover{border-color:#2f7dff8c}.user-popover{position:absolute;left:0;right:0;bottom:calc(100% + 12px);z-index:20;padding:12px;border:1px solid var(--line);border-radius:16px;display:grid;gap:10px;background:var(--panel-solid);box-shadow:0 20px 50px #00102d3d}.dark .user-popover{background:#0b1629;box-shadow:0 20px 60px #00000057}.user-popover-head{padding:4px 4px 10px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px}.user-popover-head div:last-child{display:grid;gap:3px}.user-popover-head span{color:var(--muted);font-size:12px;font-weight:800}.popover-action{min-height:42px;padding:0 12px;border:0;border-radius:11px;color:var(--text);text-align:left;background:var(--panel-muted);font-weight:800}.popover-action.danger{color:var(--danger);background:#ff4d5f1a}.workspace{min-width:0;padding:28px clamp(18px,4vw,48px) 34px}.workspace-top{margin-bottom:28px}.workspace-top h1{margin:6px 0 8px;font-size:clamp(34px,5vw,52px);line-height:1.08;letter-spacing:0}.eyebrow{margin:0;color:var(--primary);font-size:15px;font-weight:900}.top-actions{gap:12px}.mode-button,.profile-button{min-height:44px;padding:0 16px;border-radius:13px;color:var(--text);background:var(--panel);border:1px solid var(--line);font-weight:800}.profile-button{display:inline-flex;align-items:center;gap:10px}.dashboard-grid{display:grid;grid-template-columns:1.05fr 1fr 1.05fr;gap:18px}.content-grid,.prep-page{display:grid;grid-template-columns:1fr 1fr;gap:18px}.grammar-page,.placeholder-page,.built-in-page,.result-screen{display:grid;gap:18px}.built-in-search{display:grid;grid-template-columns:minmax(260px,640px) auto;gap:12px;align-items:center}.filter-panel{min-height:unset;padding:16px}.tab-row{display:flex;flex-wrap:wrap;gap:12px}.secondary-tabs{margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}.tab-button{min-height:38px;padding:0 16px;border:1px solid transparent;border-radius:10px;color:var(--muted);background:transparent;font-weight:800}.tab-button.active{color:#fff;background:linear-gradient(135deg,var(--primary),#6541ff);box-shadow:0 10px 24px #2f7cff38}.built-in-layout{display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:18px;align-items:start}.book-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.book-card{min-height:116px;padding:14px;border:1px solid var(--line);border-radius:16px;display:grid;grid-template-columns:74px 1fr;gap:14px;color:var(--text);text-align:left;background:#ffffff0a}.light .book-card{background:#ffffffd1}.book-card.active{border-color:#2f7cffb8;box-shadow:inset 0 0 0 1px #2f7cff42}.book-cover{width:74px;height:74px;border-radius:12px;display:grid;place-items:center;color:#fff;background:linear-gradient(150deg,#f59e0b,#38bdf8);font-size:34px;box-shadow:0 14px 30px #0000002e}.book-cover.large{width:90px;height:90px;font-size:42px}.book-card h3,.book-card p{margin:0}.book-card h3{font-size:19px;line-height:1.25}.book-card p{margin-top:8px;color:var(--muted)}.book-card span{display:block;margin-top:16px;color:var(--weak);font-size:13px;text-align:right}.selected-badge{display:inline-flex;margin-top:10px;padding:3px 9px;border-radius:999px;color:#00a887;background:#20e7a124;font-size:12px;font-style:normal;font-weight:900}.book-detail{position:sticky;top:24px}.detail-hero{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:center}.detail-hero h2,.detail-hero p{margin:0}.detail-hero p{margin:8px 0;color:var(--muted)}.full-button{width:100%;margin-top:18px}.unit-grid{margin-top:18px;display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.unit-card{min-height:58px;border:1px solid var(--line);border-radius:12px;color:var(--text);background:var(--panel-muted);font-weight:800;text-align:left;padding:0 14px}.preview-list{margin-top:20px;display:grid;gap:10px}.preview-list h3{margin:0 0 4px}.preview-list-title{display:flex;align-items:center;justify-content:space-between;gap:12px}.preview-list-title button{padding:0;border:0;border-radius:0;color:var(--muted);background:transparent;box-shadow:none;font-weight:900}.preview-list-title button:hover{color:var(--primary);background:transparent}.preview-list p{margin:0;padding:10px 12px;border-radius:10px;display:flex;justify-content:space-between;gap:14px;color:var(--muted);background:var(--panel-muted)}.preview-list strong{color:var(--text)}.wordbook-words-mask{background:#020711ad;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.wordbook-words-dialog{width:min(1080px,100%);height:min(780px,calc(100vh - 48px));border:1px solid var(--line);border-radius:14px;display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;overflow:hidden;background:var(--panel-solid);box-shadow:0 30px 90px #000a2357}.wordbook-words-dialog>header{padding:22px 24px 18px;display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.wordbook-words-dialog>header span{color:var(--primary);font-size:12px;font-weight:900}.wordbook-words-dialog h2,.wordbook-words-dialog header p{margin:0}.wordbook-words-dialog h2{margin:4px 0 6px;font-size:24px;letter-spacing:0}.wordbook-words-dialog header p{color:var(--muted)}.wordbook-unit-filter{padding:0 24px 16px;border-bottom:1px solid var(--line);display:flex;gap:8px;overflow-x:auto;scrollbar-width:thin}.wordbook-unit-filter button{flex:0 0 auto;min-height:36px;padding:0 14px;border:1px solid var(--line);border-radius:7px;color:var(--muted);background:var(--panel-muted);font-weight:800}.wordbook-unit-filter button:hover,.wordbook-unit-filter button.active{border-color:color-mix(in srgb,var(--primary) 68%,transparent);color:#fff;background:var(--primary)}.wordbook-word-content{min-height:0;padding:0 24px;overflow-y:auto}.wordbook-word-list{display:grid}.wordbook-word-row{min-height:92px;padding:16px 4px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:minmax(190px,.7fr) minmax(0,1.8fr);gap:24px;align-items:center}.wordbook-word-primary,.wordbook-word-explanation{min-width:0}.wordbook-word-primary strong,.wordbook-word-primary span,.wordbook-word-explanation span,.wordbook-word-explanation small{display:block}.wordbook-word-primary strong{margin-bottom:7px;font-size:20px;overflow-wrap:anywhere}.wordbook-word-primary span{display:flex;flex-wrap:wrap;gap:6px 14px;color:#36c8e9}.wordbook-word-primary small{font-size:12px}.wordbook-word-explanation p{margin:0 0 8px;color:var(--text);font-weight:750;line-height:1.55}.wordbook-word-explanation span{color:var(--muted);line-height:1.5}.wordbook-word-explanation .wordbook-word-part{margin-bottom:6px;color:#2dd4bf;font-weight:750}.wordbook-word-explanation small{margin-top:3px;color:var(--weak);line-height:1.5}.wordbook-word-loading,.wordbook-word-empty{min-height:280px;display:flex;align-items:center;justify-content:center;gap:12px;color:var(--muted)}.wordbook-word-loading span{width:18px;height:18px;border:2px solid var(--line);border-top-color:var(--primary);border-radius:50%;animation:generation-spin .8s linear infinite}.wordbook-words-dialog>footer{min-height:66px;padding:12px 24px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:flex-end}.app-pagination{width:100%;display:flex;align-items:center;justify-content:flex-end;gap:12px}.pagination-total{color:var(--muted);font-size:13px}.app-pagination select,.pagination-pages button{height:34px;border:1px solid var(--line);border-radius:6px;color:var(--text);background:var(--panel-muted)}.app-pagination select{padding:0 26px 0 10px}.pagination-pages{display:flex;align-items:center;gap:5px}.pagination-pages button{min-width:34px;padding:0 8px;font-weight:800}.pagination-pages button:hover:not(:disabled),.pagination-pages button.active{border-color:var(--primary);color:#fff;background:var(--primary)}.pagination-pages button:disabled{cursor:not-allowed;opacity:.4}.pagination-pages span{min-width:18px;color:var(--weak);text-align:center}.glass-panel{min-height:180px;padding:22px;border-radius:18px}.section-title{gap:12px;margin-bottom:18px}.section-title h2{margin:0;font-size:22px;letter-spacing:0}.section-title p{margin:4px 0 0}.tile-icon{width:40px;height:40px;border-radius:12px;display:inline-grid;place-items:center;color:#fff;font-weight:900}.tile-icon.blue{background:linear-gradient(135deg,#2f7cff,#5bc7ff)}.tile-icon.green{background:linear-gradient(135deg,#19c37d,#40e9b5)}.tile-icon.cyan{background:linear-gradient(135deg,#06b6d4,#2f7cff)}.tile-icon.orange{background:linear-gradient(135deg,#f59e0b,#ffcf62)}.tile-icon.purple{background:linear-gradient(135deg,#7c3aed,#b66cff)}.config-lines{padding:10px 0;display:grid;gap:18px}.config-lines div{display:grid;grid-template-columns:auto 1fr;column-gap:14px;align-items:center}.config-lines p{margin:0 0 4px;color:var(--muted)}.inline-actions{gap:12px;flex-wrap:wrap;margin-top:18px}.metric-grid,.summary-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.metric-grid div,.summary-cards div{min-height:92px;padding:16px;border:1px solid var(--line);border-radius:14px;display:grid;align-content:center;gap:7px;background:var(--panel-muted)}.metric-grid span,.summary-cards span{color:var(--muted);font-size:14px}.metric-grid strong,.summary-cards strong{font-size:30px;letter-spacing:0}.green-text{color:var(--success)}.purple-text{color:var(--purple)}.orange-text{color:var(--warning)}.check-list{margin:0;padding:0;display:grid;gap:16px;list-style:none}.check-list li:before{content:"✓";margin-right:10px;color:var(--success);font-weight:900}.hint-box,.notice-panel{color:var(--muted);line-height:1.7}.hint-box{margin:20px 0 0;padding:14px;border:1px dashed var(--line);border-radius:13px}.practice-duration-panel{grid-column:span 1;min-height:286px;display:grid;grid-template-rows:auto 1fr}.practice-duration-panel .section-title,.weekly-practice-panel .section-title{display:flex;align-items:center}.practice-duration-panel .section-title p,.weekly-practice-panel .section-title p{color:var(--muted);font-size:13px}.duration-total{display:grid;align-content:center;gap:10px;padding:12px 4px 24px}.duration-total strong{color:var(--text);font-size:clamp(34px,3.4vw,50px);line-height:1.08;letter-spacing:0}.duration-total span{color:var(--muted)}.duration-total.loading{opacity:.5}.weekly-practice-panel{grid-column:span 2;min-width:0;min-height:286px}.weekly-practice-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.weekly-total{flex:0 0 auto;padding:8px 12px;border:1px solid var(--line);border-radius:10px;color:var(--primary);background:var(--panel-muted);font-size:13px;font-weight:800}.weekly-chart{height:188px;display:grid;grid-template-columns:repeat(7,minmax(42px,1fr));gap:10px;align-items:end;padding:8px 4px 0}.weekly-chart-day{position:relative;min-width:0;display:grid;justify-items:center;gap:5px;outline:none}.weekly-bar-track{width:min(42px,72%);height:126px;display:flex;align-items:flex-end;border-radius:7px 7px 3px 3px;overflow:hidden;background:var(--panel-muted)}.weekly-bar-track span{width:100%;min-height:0;border-radius:7px 7px 3px 3px;background:linear-gradient(180deg,#28d8b2,#2f7cff 68%,#6d42ff);box-shadow:0 10px 24px #2f7cff47;transition:height .28s ease}.weekly-chart-day>strong{color:var(--text);font-size:13px}.weekly-chart-day>small{min-height:16px;color:var(--muted);font-size:11px}.weekly-chart-tooltip{position:absolute;z-index:4;left:50%;bottom:calc(100% + 8px);width:max-content;max-width:190px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;display:grid;gap:4px;color:var(--text);background:var(--panel-solid);box-shadow:0 16px 38px #000a1e3d;opacity:0;pointer-events:none;transform:translate(-50%,6px);transition:opacity .16s ease,transform .16s ease}.weekly-chart-tooltip span{color:var(--muted);font-size:12px}.weekly-chart-day:hover .weekly-chart-tooltip,.weekly-chart-day:focus .weekly-chart-tooltip,.weekly-chart-day:focus-within .weekly-chart-tooltip{opacity:1;transform:translate(-50%)}.weekly-empty{min-height:178px;display:grid;place-content:center;justify-items:center;gap:12px;color:var(--muted);text-align:center}.weekly-empty>span{color:var(--primary);font-size:36px}.weekly-empty p{margin:0}.cta-panel{grid-column:1 / -1;min-height:156px;padding:26px;border-radius:18px;display:grid;grid-template-columns:1fr 1fr;gap:28px;place-items:center}.cta-panel.wide{grid-column:1 / -1}.hero-button,.outline-hero-button{width:min(430px,100%);min-height:86px;border-radius:30px;font-size:25px;font-weight:900}.hero-button{color:#fff;background:linear-gradient(135deg,#2f7cff,#28c8de,#5b2cff);box-shadow:0 20px 42px #2f7cff4d}.outline-hero-button{color:var(--primary);background:transparent;border:2px solid rgba(47,124,255,.6)}.notice-panel{grid-column:1 / -1;padding:18px 22px;border-radius:16px}.practice-prep-page{display:grid;gap:18px}.prep-card-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.prep-config-lines{display:grid;gap:14px}.prep-config-lines>div{min-height:94px;padding:16px;border:1px solid var(--line);border-radius:14px;display:grid;grid-template-columns:auto 1fr;column-gap:14px;align-items:center;background:var(--panel-muted)}.prep-config-lines p{margin:0 0 5px;color:var(--muted)}.prep-config-lines strong{display:block;line-height:1.45}.config-icon{grid-row:span 2;width:48px;height:48px;border-radius:16px;display:grid;place-items:center;color:#fff;font-size:24px;font-weight:900}.config-icon.blue{background:linear-gradient(135deg,#2f7cff,#5bc7ff)}.config-icon.green{background:linear-gradient(135deg,#19c37d,#40e9b5)}.prep-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.prep-metrics div{min-height:98px;padding:14px;border:1px solid var(--line);border-radius:14px;display:grid;align-content:center;gap:8px;background:var(--panel-muted)}.prep-metrics div.wide{grid-column:span 3}.prep-metrics span{color:var(--muted);font-size:14px}.prep-metrics strong{font-size:28px;line-height:1.1;letter-spacing:0}.prep-actions{grid-template-columns:repeat(3,minmax(180px,1fr));place-items:stretch;align-items:center}.prep-actions .hero-button,.prep-actions .outline-hero-button{width:100%}.generation-button{display:inline-flex;align-items:center;justify-content:center;gap:10px}.button-spinner{width:18px;height:18px;flex:0 0 auto;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:generation-spin .72s linear infinite}.prep-notice{display:flex;gap:10px;align-items:center;background:linear-gradient(135deg,#2f7cff24,#20e7a114)}.node-list,.wordbook-list{display:grid;gap:10px}.node-row,.wordbook-card{width:100%;min-height:54px;padding:0 14px;border-radius:13px;display:flex;justify-content:space-between;align-items:center;color:var(--text);text-align:left;background:var(--panel-muted);border:1px solid var(--line)}.node-row.subtle{color:var(--primary)}.wordbook-card{min-height:70px;flex-direction:column;align-items:flex-start;justify-content:center;gap:4px}.wordbook-card small{color:var(--muted)}.wordbook-card.selected{color:#fff;background:linear-gradient(135deg,#2f7cff,#4c23d7)}.wordbook-card.selected small{color:#ffffffc7}.pill{margin-left:auto;min-height:28px;padding:4px 10px;border-radius:999px;color:var(--primary);background:#2f7cff1f;font-size:13px;font-weight:900}.empty-state{min-height:160px;display:grid;place-items:center;color:var(--weak);text-align:center}.my-wordbook-grid{grid-template-columns:1fr 1.1fr}.my-wordbook-hero{display:flex;align-items:flex-end;justify-content:space-between;gap:20px}.my-wordbook-hero h2{margin:0 0 8px;font-size:34px;letter-spacing:0}.my-wordbook-page{display:grid;gap:18px}.overview-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.metric-card{min-height:104px;padding:18px;border:1px solid var(--line);border-radius:16px;display:grid;align-content:center;gap:8px;background:var(--panel);box-shadow:0 18px 46px #00102d14}.metric-card span{color:var(--muted);font-weight:800}.metric-card strong{font-size:32px;letter-spacing:0}.my-wordbook-panels{display:grid;grid-template-columns:1.45fr .9fr;gap:18px}.enabled-book-list{display:grid;gap:12px}.enabled-book-card{padding:14px;border:1px solid var(--line);border-radius:16px;display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;background:var(--panel-muted)}.enabled-book-card.selected{border-color:#2f7cff85;box-shadow:0 0 0 4px #2f7cff1a}.book-info-button{padding:0;border:0;display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:center;color:var(--text);text-align:left;background:transparent}.book-cover{width:56px;height:56px;border-radius:14px;display:grid;place-items:center;color:#fff;font-size:24px;font-weight:900;background:linear-gradient(145deg,#f8b415,#28c8ee)}.book-info-button strong,.custom-summary h3{display:block;margin:0 0 5px;font-size:18px;letter-spacing:0}.book-info-button small,.book-info-button em,.custom-summary p{display:block;color:var(--muted);font-style:normal;line-height:1.6}.book-actions{display:flex;gap:10px;align-items:center}.danger-button.slim{min-height:36px;padding:0 12px}.custom-summary{min-height:220px;display:grid;align-content:center;gap:10px}.merged-word-panel{min-height:460px}.word-filter-bar{display:grid;grid-template-columns:minmax(240px,1fr) 150px 150px auto;gap:12px;margin-bottom:16px}select{width:100%;border:1px solid var(--line);border-radius:14px;padding:0 14px;color:var(--text);background:var(--panel-solid)}.merged-word-list{display:grid;gap:10px}.merged-word-row{min-height:72px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;display:grid;grid-template-columns:minmax(220px,1.2fr) 76px 96px 96px minmax(180px,1fr);gap:12px;align-items:center;background:var(--panel-muted)}.merged-word-row strong,.merged-word-row small{display:block}.merged-word-row small,.merged-word-row em{color:var(--muted);font-style:normal;line-height:1.5}.merged-word-row>span{min-height:30px;padding:5px 10px;border-radius:999px;display:inline-grid;place-items:center;color:var(--primary);background:#2f7cff1f;font-size:13px;font-weight:900}.load-more-row{margin-top:16px;display:grid;place-items:center}.hero-actions{margin-top:20px;display:flex;flex-wrap:wrap;gap:12px}.wordbook-card strong{margin-top:8px;color:var(--text);font-size:14px}.wordbook-card.selected strong{color:#fff}.current-book-card{display:grid;gap:16px}.current-book-card h3{margin:0;font-size:24px;letter-spacing:0}.current-book-card p{margin:0;color:var(--muted)}.summary-cards.compact{grid-template-columns:repeat(3,1fr)}.summary-cards.compact div{min-height:76px}.summary-cards.compact strong{font-size:24px}.progress-line{height:8px;overflow:hidden;border-radius:999px;background:var(--panel-muted);border:1px solid var(--line)}.progress-line span{display:block;height:100%;border-radius:inherit;background:linear-gradient(135deg,var(--success),var(--primary))}.grammar-stats{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}.grammar-stats>div{min-height:90px;padding:16px;border:1px solid var(--line);border-radius:16px;display:grid;align-content:center;background:var(--panel)}.grammar-stats>div:not(.grammar-health){grid-template-columns:auto 1fr;column-gap:12px}.grammar-stats p{margin:0 0 5px;color:var(--muted)}.grammar-health{place-items:center;color:#009b82;text-align:center;font-weight:900;background:#20e7a11f!important}.toolbar-row{display:grid;grid-template-columns:repeat(3,auto) 1fr repeat(3,auto);gap:14px}.pattern-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.sentence-type-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.grammar-card{min-height:132px;padding:14px;border:1px solid var(--line);border-radius:14px;display:grid;align-content:start;gap:7px;background:var(--panel-muted)}.grammar-card,.mini-check,.chip-check{-webkit-tap-highlight-color:transparent}.grammar-card.checked{border-color:#20e5e7b8;box-shadow:inset 0 0 0 1px #20e5e740}.grammar-card input,.mini-check input,.chip-check input{width:auto;box-shadow:none;transition:none;accent-color:var(--primary)}.grammar-card input:focus,.grammar-card input:focus-visible,.mini-check input:focus,.mini-check input:focus-visible,.chip-check input:focus,.chip-check input:focus-visible{outline:none;box-shadow:none}.grammar-card strong{font-size:15px}.grammar-card span{color:var(--primary-2)}.grammar-card small{color:var(--muted)}.grammar-card em{width:max-content;padding:3px 9px;border-radius:999px;color:#009b82;background:#20e7a124;font-size:12px;font-style:normal;font-weight:900}.tense-grid,.clause-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.clause-grid{grid-template-columns:repeat(3,1fr)}.grammar-group{padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--panel-muted)}.grammar-group h3{margin:0 0 12px;display:flex;justify-content:space-between;color:var(--primary);font-size:16px}.mini-check{margin-top:10px;display:grid;grid-template-columns:auto 1fr;gap:10px}.mini-check span{display:grid;gap:4px}.mini-check small,.grammar-group p{color:var(--muted)}.chip-list{display:flex;flex-wrap:wrap;gap:9px}.chip-check{width:max-content;padding:6px 10px;border:1px solid var(--line);border-radius:9px;display:inline-flex;grid-template-columns:auto auto;align-items:center;gap:6px;background:var(--panel-solid)}.sticky-save{position:sticky;bottom:0;z-index:2;min-height:74px;padding:12px 18px;border:1px solid var(--line);border-radius:16px;display:flex;justify-content:space-between;align-items:center;gap:14px;color:var(--muted);background:color-mix(in srgb,var(--panel-solid) 88%,transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.stepper{margin-top:18px;display:grid;grid-template-columns:1fr 110px;align-items:center}.app-toast{position:fixed;z-index:3200;top:clamp(96px,18vh,180px);left:50%;width:max-content;max-width:min(640px,calc(100vw - 32px));min-height:44px;padding:11px 18px;border:1px solid #ffb300;border-radius:8px;display:grid;place-items:center;color:#241700;background:#ffd84d;box-shadow:0 14px 36px #ffb3004d,0 5px 14px #00000038;font-size:14px;font-weight:900;line-height:1.5;text-align:center;transform:translate(-50%);pointer-events:none}.app-toast-enter-active,.app-toast-leave-active{transition:opacity .2s ease,transform .2s ease}.app-toast-enter-from,.app-toast-leave-to{opacity:0;transform:translate(-50%,-10px)}.answer-page{min-height:100vh;padding:28px 16px 48px;color:#0f172a;background:radial-gradient(circle at 78% 8%,rgba(47,124,255,.16),transparent 28rem),linear-gradient(180deg,#f8fbff,#eef5ff)}.answer-shell{width:min(980px,100%);margin:0 auto}.answer-header{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;padding:22px;border:1px solid rgba(142,158,190,.28);border-radius:18px;background:#ffffffdb;box-shadow:0 18px 50px #244a821f}.answer-header h1{margin:4px 0 8px;font-size:28px;line-height:1.2;letter-spacing:0}.answer-header p{margin:0;color:#64748b}.answer-list{margin-top:16px;display:grid;gap:12px}.answer-item{display:grid;grid-template-columns:42px 1fr;gap:12px;padding:16px;border:1px solid rgba(142,158,190,.24);border-radius:16px;background:#ffffffd1}.answer-index{width:34px;height:34px;display:grid;place-items:center;border-radius:12px;color:#fff;font-weight:900;background:linear-gradient(135deg,#2f7cff,#5b2cff)}.answer-content{min-width:0}.answer-chinese,.answer-sentence,.answer-explanation{margin:0}.answer-chinese{font-size:15px;font-weight:800}.answer-sentence{margin-top:6px;font-size:20px;font-weight:900;line-height:1.35}.answer-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px}.answer-meta span{padding:5px 10px;border-radius:999px;color:#1d4ed8;background:#eff6ff;font-size:13px;font-weight:800}.answer-explanation{margin-top:8px;color:#64748b;font-size:14px}.answer-empty{margin-top:18px;padding:28px;border-radius:16px;text-align:center;color:#64748b;background:#ffffffd1}.generation-status{position:fixed;z-index:3100;right:24px;bottom:24px;width:min(340px,calc(100vw - 32px));min-height:76px;padding:14px 16px;border:1px solid rgba(56,189,248,.3);border-radius:8px;display:grid;grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:12px;color:#eaf8ff;background:#071427f0;box-shadow:0 18px 48px #00000057,0 0 28px #38bdf81f;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.light .generation-status{color:#10223d;background:#fffffff5;box-shadow:0 18px 48px #234e822e,0 0 28px #38bdf81f}.generation-status>div{min-width:0;display:grid;gap:4px}.generation-status strong{font-size:15px;line-height:1.3}.generation-status div>span{overflow:hidden;color:#8ea9c5;font-size:12px;line-height:1.35;text-overflow:ellipsis;white-space:nowrap}.generation-orbit{position:relative;width:42px;height:42px;border:3px solid rgba(56,189,248,.18);border-top-color:#38bdf8;border-right-color:#34d399;border-radius:50%;animation:generation-spin .9s linear infinite}.generation-orbit:after{content:"";position:absolute;top:10px;right:10px;bottom:10px;left:10px;border-radius:50%;background:#38bdf8;box-shadow:0 0 14px #38bdf8c7;animation:generation-pulse 1.2s ease-in-out infinite}.generation-dots{display:flex;align-items:center;gap:4px}.generation-dots i{width:5px;height:5px;border-radius:50%;background:#38bdf8;animation:generation-dot 1.1s ease-in-out infinite}.generation-dots i:nth-child(2){animation-delay:.14s}.generation-dots i:nth-child(3){animation-delay:.28s}.generation-status-enter-active,.generation-status-leave-active{transition:opacity .22s ease,transform .22s ease}.generation-status-enter-from,.generation-status-leave-to{opacity:0;transform:translateY(12px)}@keyframes generation-spin{to{transform:rotate(360deg)}}@keyframes generation-pulse{0%,to{opacity:.48;transform:scale(.72)}50%{opacity:1;transform:scale(1)}}@keyframes generation-dot{0%,60%,to{opacity:.28;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}.practice-screen{position:relative;min-height:100vh;min-height:100dvh;padding:max(18px,env(safe-area-inset-top)) clamp(16px,5vw,64px) max(18px,env(safe-area-inset-bottom));display:grid;grid-template-rows:auto auto auto 1fr auto;gap:18px;color:#fff;background:radial-gradient(circle at 50% 8%,rgba(56,189,248,.18),transparent 32rem),radial-gradient(circle at 8% 88%,rgba(32,231,161,.1),transparent 26rem),#020711}.practice-confetti-canvas{pointer-events:none;position:absolute;top:0;right:0;bottom:0;left:0;z-index:8;width:100%;height:100%}.practice-top{position:relative;z-index:2;display:flex;justify-content:space-between;align-items:center;gap:14px}.practice-title{display:grid;gap:3px;text-align:center}.practice-title strong{font-size:18px;letter-spacing:0}.practice-title span{color:#cbd5e1;font-size:13px}.round-button.glass{color:#fff;background:#ffffff1f;box-shadow:none}.practice-status{position:relative;z-index:2;width:min(760px,100%);margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.practice-status div{min-height:72px;padding:12px 14px;border:1px solid rgba(255,255,255,.12);border-radius:18px;display:grid;align-content:center;gap:5px;background:#ffffff14;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.practice-status span{color:#cbd5e1;font-size:13px;font-weight:800}.practice-status strong{font-size:24px;line-height:1;letter-spacing:0}.progress-track{position:relative;z-index:2;width:min(760px,100%);margin:0 auto;height:8px;overflow:hidden;border-radius:999px;background:#ffffff1f}.progress-track div{height:100%;border-radius:inherit;background:linear-gradient(90deg,#38bdf8,#34d399);transition:width .25s ease}.failure-settlement{position:fixed;top:clamp(172px,19vh,228px);left:50%;z-index:9;width:max-content;min-width:0;max-width:min(1120px,calc(100vw - 64px));min-height:132px;height:auto;margin:0;padding:8px 18px 12px;overflow:visible;border:0;border-radius:0;display:grid;justify-items:center;align-content:center;gap:6px;color:#ffb4c0;text-align:center;background:transparent;box-shadow:none;transform-origin:top center;animation:settlement-drop .26s ease-out both}.failure-settlement .word-main{color:#ffb4c0;font-size:26px}.failure-settlement .word-main.sentence-answer{width:auto;max-width:min(1040px,calc(100vw - 112px));font-size:clamp(18px,2vw,24px);line-height:1.2;white-space:normal}.failure-settlement p{max-width:min(1040px,calc(100vw - 112px));margin:4px 0 0;color:#ffd9df;font-size:14px;font-weight:800;white-space:normal}.failure-settlement small{max-width:min(1040px,calc(100vw - 112px));color:#d7a3ad;font-size:12px;line-height:1.6;white-space:normal}.question-card{align-self:stretch;position:relative;width:100%;min-height:0;margin:0 auto;padding:0;border:0;border-radius:0;display:flex;flex:1;z-index:2;flex-direction:column;align-items:center;justify-content:center;color:#f8fafc;background:transparent;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}.translation{width:min(920px,100%);margin:0 auto 34px;color:#f4f9ff;font-size:clamp(20px,2.6vw,35px);font-weight:900;line-height:1.35;text-align:center;text-shadow:0 12px 38px rgba(0,0,0,.34)}.blank-sentence{--sentence-font-size: clamp(20px, 3.7vw, 35px);display:flex;align-items:baseline;justify-content:center;flex-wrap:wrap;width:85vw;max-width:85vw;margin:0;font-size:var(--sentence-font-size);font-weight:950;line-height:1.22;letter-spacing:0;text-align:center;text-shadow:0 18px 46px rgba(0,0,0,.35);white-space:normal;overflow-wrap:normal;word-break:normal}.inline-blank-input{-webkit-appearance:none;-moz-appearance:none;appearance:none;box-sizing:content-box;flex:0 0 auto;min-height:auto;height:1.05em;margin:0 12px;padding:0 0 6px;border:0;border-bottom:4px solid rgba(205,216,232,.74);border-radius:0;outline:none;color:#fff;background:transparent;caret-color:transparent;font:inherit;font-weight:950;line-height:1;text-align:center;vertical-align:baseline;transition:border-color .16s ease,background .16s ease,box-shadow .16s ease,color .16s ease}.inline-blank-input::placeholder{color:transparent;opacity:0}.inline-blank-input.active,.inline-blank-input:focus{color:#fff;border-bottom-color:#7dd3fc;background:transparent;box-shadow:none}.inline-blank-input.correct{border-bottom-color:#34d399}.inline-blank-input.wrong{color:#ff2f4f;border-bottom-color:#ff2f4f;text-decoration:none;text-shadow:0 0 22px rgba(255,47,79,.3)}.inline-blank-input.revealed{color:#36f29f;border-bottom-color:#36f29f;text-shadow:0 0 22px rgba(54,242,159,.22)}.inline-blank-input.revealed.failure-wrong{border-bottom-color:#ff2f4f}.inline-blank-input.shake-a{animation:wrong-shake-a .28s ease-in-out}.inline-blank-input.shake-b{animation:wrong-shake-b .28s ease-in-out}.inline-blank-input:disabled{opacity:1;cursor:default}.answer-result{width:min(520px,100%);margin:42px auto 0;padding:0;border-radius:0;display:grid;justify-items:center;gap:10px;text-align:center}.success-settlement{min-height:34vh;margin:0 auto;align-content:center}.answer-result div{display:grid;justify-items:center;gap:8px}.answer-result p{margin:0;line-height:1.6}.answer-result.ok{color:#dffef4;background:transparent}.answer-result.bad{color:#ffb4c0;background:transparent}.answer-result>strong{color:inherit;font-size:16px}.word-insight{position:relative;min-width:min(440px,100%);padding:0;border:0;border-radius:0;background:transparent;box-shadow:none}.word-insight small{color:#cbd5e1;line-height:1.6}.word-insight.danger{padding:14px 18px;border-color:#ff52674d;border-width:1px;border-style:solid;border-radius:16px;background:#23081280;box-shadow:0 20px 60px #0000002e}.word-insight.danger .word-main{color:#ffb4c0}.word-main{color:#fff;font-size:34px;font-weight:950;line-height:1.08;text-decoration:underline;text-decoration-color:#8b5cf6;text-decoration-thickness:4px;text-underline-offset:7px}.word-main.sentence-answer{max-width:min(920px,82vw);font-size:clamp(22px,3vw,38px);line-height:1.35;text-decoration-thickness:3px}.word-phonetic{display:inline-flex;justify-content:center;flex-wrap:wrap;gap:8px 14px;color:#8ee7ff;font-size:14px;font-weight:800}.word-phonetic span{display:inline-flex;align-items:baseline;gap:5px}.answer-result .settlement-targets,.failure-settlement .settlement-targets{display:flex;align-items:stretch;justify-content:center;flex-wrap:wrap;gap:10px}.settlement-target{min-width:178px;max-width:300px;padding:12px 16px;border:1px solid rgba(125,211,252,.22);border-radius:8px;display:grid;align-content:center;justify-items:center;gap:5px;background:#09172b8f}.settlement-target>strong{color:#fff;font-size:23px;line-height:1.2;text-decoration:underline;text-decoration-color:#8b5cf6;text-decoration-thickness:3px;text-underline-offset:6px}.settlement-target>small{color:#cbd5e1;font-size:12px;line-height:1.45}.target-phonetics{display:flex;justify-content:center;flex-wrap:wrap;gap:4px 10px}.target-phonetics small{color:#8ee7ff;font-size:12px;font-weight:800}.settlement-sentence{max-width:min(900px,82vw);color:#fff;font-size:clamp(18px,2.2vw,28px);font-weight:850;text-align:center}.failure-settlement .settlement-targets.compact{flex-wrap:nowrap}.failure-settlement .settlement-target{min-width:140px;max-width:300px;padding:4px 14px;border:0;border-radius:0;background:transparent}.failure-settlement .settlement-target>strong{color:#ffb4c0;font-size:19px}.failure-settlement .settlement-target>small{color:#ffd9df}.failure-settlement .settlement-target .target-phonetics small{color:#8ee7ff}.word-phonetic b{color:#c4b5fd;font-size:12px;font-weight:900}@keyframes settlement-drop{0%{opacity:0;transform:translate(-50%) translateY(-22px) scaleY(.72);clip-path:inset(0 0 100% 0 round 18px)}to{opacity:1;transform:translate(-50%) translateY(0) scaleY(1);clip-path:inset(0 0 0 0 round 18px)}}@keyframes wrong-shake-a{0%,to{transform:translate(0)}18%{transform:translate(-10px)}36%{transform:translate(8px)}54%{transform:translate(-6px)}72%{transform:translate(4px)}}@keyframes wrong-shake-b{0%,to{transform:translate(0)}18%{transform:translate(10px)}36%{transform:translate(-8px)}54%{transform:translate(6px)}72%{transform:translate(-4px)}}.practice-actions{position:relative;z-index:2;width:min(760px,100%);margin:0 auto;display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}.practice-actions button{display:inline-flex;align-items:center;justify-content:center;gap:10px}.practice-actions kbd{min-width:44px;padding:3px 7px;border:1px solid rgba(255,255,255,.18);border-radius:5px;color:inherit;background:#00000029;font-family:inherit;font-size:11px;font-weight:900;line-height:1.2;white-space:nowrap}.hint-button{min-height:44px;padding:0 18px;border:1px solid rgba(255,202,58,.42);border-radius:12px;color:#ffe28a;background:#ffb8001a;font-weight:900;cursor:pointer}.hint-button:hover,.hint-button[aria-pressed=true]{border-color:#ffca3ac2;color:#251900;background:#ffd84d}.hint-button:disabled{cursor:not-allowed;opacity:.45}.practice-hint-card{position:fixed;z-index:12;left:50%;bottom:max(92px,calc(env(safe-area-inset-bottom) + 82px));min-width:220px;max-width:min(560px,calc(100vw - 32px));padding:14px 22px 16px;border:1px solid rgba(255,202,58,.52);border-radius:8px;display:grid;justify-items:center;gap:5px;color:#241700;background:#ffd84d;box-shadow:0 16px 42px #ffb3003d,0 8px 24px #00000047;transform:translate(-50%);pointer-events:none}.practice-hint-card span{font-size:12px;font-weight:800;opacity:.72}.practice-hint-card strong{max-width:100%;overflow-wrap:anywhere;font-size:24px;line-height:1.25;text-align:center}.practice-hint-enter-active,.practice-hint-leave-active{transition:opacity .18s ease,transform .18s ease}.practice-hint-enter-from,.practice-hint-leave-to{opacity:0;transform:translate(-50%,8px)}.result-screen{width:min(980px,100%);min-height:100vh;margin:0 auto;padding:32px 18px}.result-card{min-height:300px;padding:clamp(22px,5vw,38px);border-radius:22px;display:grid;justify-items:center;align-content:center;gap:14px;text-align:center;background:var(--panel);border:1px solid var(--line);box-shadow:0 24px 70px #00143c1f}.score-ring{width:132px;height:132px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle at center,var(--panel-solid) 0 58%,transparent 59%),conic-gradient(var(--primary) calc(var(--score, 0) * 1%),rgba(142,158,190,.28) 0)}.score-ring strong{margin-top:8px;font-size:42px;line-height:.9}.score-ring span{margin-top:-28px;color:var(--muted);font-size:13px;font-weight:800}.result-actions{width:min(360px,100%);display:grid;grid-template-columns:1fr 1fr;gap:12px}.result-stats{width:min(520px,100%);display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.result-stats div{min-height:82px;padding:13px;border:1px solid var(--line);border-radius:16px;display:grid;align-content:center;gap:6px;background:var(--panel-muted)}.result-stats span{color:var(--muted);font-size:13px;font-weight:800}.result-stats strong{font-size:28px;line-height:1;letter-spacing:0}.wrong-list{display:grid;gap:12px}.wrong-item{padding:16px;border:1px solid var(--line);border-radius:16px;background:var(--panel-muted)}.wrong-meta{margin-bottom:12px;display:flex;justify-content:space-between;gap:10px;align-items:center}.wrong-meta span,.wrong-meta strong{min-height:30px;padding:0 10px;border-radius:999px;display:inline-grid;place-items:center;font-size:13px;font-weight:900}.wrong-meta span{color:var(--primary);background:#2f7cff24}.wrong-meta strong{color:#047857;background:#d1fae5}.wrong-item p,.wrong-item h3{margin:0}.wrong-item p{color:var(--muted);font-size:14px;font-weight:700}.wrong-item h3{margin-top:8px;font-size:22px;line-height:1.25}.wrong-answer-row{margin-top:12px;display:grid;grid-template-columns:1fr 1fr;gap:10px}.wrong-answer-row span,.wrong-answer-row strong{min-height:40px;padding:10px 12px;border-radius:12px;font-size:14px}.wrong-answer-row span{color:#b91c1c;background:#fee2e2}.wrong-answer-row strong{color:#1e3a8a;background:#dbeafe}.wrong-item small{display:block;margin-top:10px;color:var(--muted);line-height:1.6}@media (max-width: 1180px){.dashboard-grid,.content-grid,.prep-page,.prep-card-grid,.grammar-stats,.built-in-layout,.tense-grid,.pattern-grid,.sentence-type-grid,.book-grid,.clause-grid{grid-template-columns:1fr 1fr}.rules-panel{grid-column:1 / -1}.weekly-practice-panel{grid-column:span 1}}@media (max-width: 820px){.wordbook-words-mask{padding:10px}.wordbook-words-dialog{height:calc(100vh - 20px)}.wordbook-words-dialog>header,.wordbook-words-dialog>footer{padding-left:16px;padding-right:16px}.wordbook-unit-filter,.wordbook-word-content{padding-left:16px;padding-right:16px}.wordbook-word-row{grid-template-columns:1fr;gap:8px}.app-layout{display:block;padding-bottom:78px}.sidebar{position:fixed;inset:auto 10px 10px;z-index:10;width:auto;height:64px;padding:8px;border:1px solid var(--line);border-radius:22px;grid-template-rows:1fr}.sidebar-brand,.user-card,.user-menu,.nav-item span:not(.nav-icon){display:none}.nav-list{grid-auto-flow:column;grid-auto-columns:1fr;align-content:center}.nav-item{min-height:48px;padding:0;justify-content:center}.workspace{padding:22px 14px 24px}.workspace-top{align-items:flex-start;flex-direction:column}.dashboard-grid,.content-grid,.my-wordbook-grid,.my-wordbook-panels,.prep-page,.prep-card-grid,.prep-actions,.grammar-stats,.pattern-grid,.sentence-type-grid,.tense-grid,.clause-grid,.built-in-search,.built-in-layout,.book-grid,.metric-grid,.summary-cards,.cta-panel,.toolbar-row{grid-template-columns:1fr}.practice-duration-panel,.weekly-practice-panel{grid-column:1 / -1}.weekly-practice-header{align-items:stretch;flex-direction:column}.weekly-total{align-self:flex-start}.overview-grid{grid-template-columns:repeat(2,1fr)}.my-wordbook-hero,.enabled-book-card{align-items:stretch;grid-template-columns:1fr}.my-wordbook-hero{display:grid}.book-actions,.hero-actions{align-items:stretch;flex-direction:column}.word-filter-bar,.merged-word-row,.summary-cards.compact{grid-template-columns:1fr}.prep-illustration{display:none}.prep-metrics{grid-template-columns:1fr 1fr}.prep-metrics div.wide{grid-column:1 / -1}.hero-button,.outline-hero-button{min-height:68px;font-size:21px}}@media (max-width: 520px){.app-pagination{align-items:flex-start;flex-wrap:wrap}.pagination-total{width:100%}.pagination-pages{max-width:100%;overflow-x:auto}.auth-screen{padding:18px}.top-actions,.inline-actions,.sticky-save{align-items:stretch;flex-direction:column}.mode-button,.profile-button,.sticky-save .primary-button{width:100%}.practice-actions,.practice-status,.result-actions,.result-stats,.dialog-actions,.prep-metrics,.wrong-answer-row{grid-template-columns:1fr}.wrong-meta,.answer-result div{align-items:stretch;flex-direction:column}.practice-mode-options{grid-template-columns:1fr}.practice-mode-dialog>footer{align-items:stretch;flex-direction:column}.practice-mode-dialog>footer button{width:100%}.generation-difficulty-options,.generation-rule-list{grid-template-columns:1fr}.generation-setting-heading,.generation-settings-dialog>footer{align-items:stretch;flex-direction:column}.generation-count-control{grid-template-columns:44px 1fr 44px}.generation-count-control input{width:100%}.generation-settings-dialog>footer button{width:100%}.failure-settlement .settlement-targets.compact{flex-wrap:wrap}.settlement-target{min-width:min(220px,76vw)}}
