:root{font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans,sans-serif;color:#1b2942;background:#f5f7fb;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--blue:#2468e5;--blue-soft:#e9f0ff;--border:#e2e8f3;--muted:#78869e;--bg:#f5f7fb;--card:#fff;--text:#1b2942;--keyboard-height:0px}*{box-sizing:border-box}html{background:var(--bg)}body{margin:0;min-width:320px;color:var(--text);background:var(--bg)}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.55;cursor:not-allowed}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #7db8ff;outline-offset:3px}a{color:inherit;text-decoration:none}button{border:0;background:transparent;color:inherit}.site-header{position:relative;z-index:4;height:76px;background:var(--card);border-bottom:1px solid var(--border)}.header-inner{max-width:1500px;height:100%;margin:auto;padding:0 36px;display:flex;align-items:center;gap:34px}.brand{white-space:nowrap;display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;letter-spacing:-.65px;color:var(--text)}.brand b{color:var(--blue)}.brand-mark{display:grid;place-items:center;border-radius:10px;background:var(--blue);color:#fff;width:38px;height:38px}.desktop-nav{display:flex;align-items:center;justify-content:center;gap:5px;flex:1}.nav-tab{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:12px 15px;white-space:nowrap;border-radius:10px;font-weight:700}.nav-tab:hover,.nav-tab.selected{background:var(--blue-soft);color:var(--blue)}.header-actions{display:flex;align-items:center;gap:11px;margin-left:auto}.language-pill,.icon-btn{border:1px solid var(--border);background:var(--card);border-radius:10px;display:flex;align-items:center;justify-content:center;min-width:38px;height:38px;gap:7px}.language-pill{padding:0 13px;font-size:12px;font-weight:750}.mobile-nav{display:none}.page-layout{display:grid;grid-template-columns:minmax(0,1fr) 304px;gap:34px;max-width:1500px;margin:0 auto;padding:32px 36px 0}.main-content{width:100%;min-width:0;max-width:1050px;margin:0 auto}.right-rail{padding-top:145px}.ad-slot{height:260px;border:1px dashed #d8e1f0;background:linear-gradient(145deg,#f8faff,#eef3fb);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:#adb8c8;font-size:11px;text-transform:uppercase;letter-spacing:1px}.ad-status{font-size:10px;text-transform:none;letter-spacing:0}.hero-title,.section-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:10px 0 24px}.hero-title h1,.section-head h1{font-size:clamp(28px,3.5vw,41px);letter-spacing:-1.5px;line-height:1.13;margin:12px 0;font-weight:800}.hero-title p,.section-head p{font-size:14px;margin:0;color:var(--muted);line-height:1.65}.eyebrow{display:flex;align-items:center;gap:8px;color:var(--blue);font-size:11px;font-weight:850;letter-spacing:1.2px;text-transform:uppercase}.blue-dot{width:7px;height:7px;background:var(--blue);border-radius:50%;display:inline-block}.hero-mini{background:var(--card);border:1px solid var(--border);border-radius:14px;min-width:128px;padding:14px 21px;display:flex;flex-direction:column;gap:4px}.hero-mini span,.hero-mini small{font-size:12px;color:var(--muted)}.hero-mini strong{font-size:26px}.card{background:var(--card);border:1px solid var(--border);border-radius:15px;box-shadow:0 6px 24px #19437a06}.test-top{padding:12px 17px 14px}.mode-strip{display:flex;align-items:center;gap:5px;overflow-x:auto;scrollbar-width:thin;padding:4px 0 13px;border-bottom:1px solid var(--border)}.mode-pill{border-radius:8px;padding:9px 12px;white-space:nowrap;font-weight:650;font-size:12px;color:var(--muted)}.mode-pill.active{background:var(--blue);color:#fff}.mode-pill:hover:not(.active){background:var(--blue-soft);color:var(--blue)}.controls-bar{display:flex;gap:18px;align-items:center;justify-content:space-between;padding:13px 3px 2px}.chip-list,.inline-select{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px}.chip-list{min-width:0;overflow-x:auto}.chip-list button{font-size:12px;font-weight:750;padding:7px 12px;border-radius:8px;color:var(--muted)}.chip-list button.selected-chip{color:var(--blue);background:var(--blue-soft)}.inline-select{min-width:150px;color:var(--blue)}.inline-select select{min-width:0;max-width:140px;border:0;background:transparent;appearance:none;color:var(--text);font-size:12px;font-weight:700;padding:5px}.typing-panel{margin-top:18px;overflow:hidden;min-height:335px;transition:border-color .2s}.typing-panel.is-focused{border-color:#b7cdfd}.test-status{padding:24px 28px 20px;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:20px;border-bottom:1px solid var(--border)}.test-status>div{display:flex;flex-direction:column;gap:6px}.label-small{font-size:10px;font-weight:850;letter-spacing:1px;color:var(--muted)}.test-status strong{font-size:18px;font-weight:800}.test-status strong.time-value{color:var(--blue);font-size:23px;line-height:1}.typing-workspace{margin:24px 28px 15px;position:relative;min-height:132px;cursor:text}.typing-target{font-size:clamp(22px,2.35vw,30px);font-weight:620;line-height:1.8;letter-spacing:.25px;overflow:hidden;max-height:176px;overflow-wrap:anywhere;white-space:pre-wrap;word-break:normal;user-select:none;direction:inherit}.typing-target .char-upcoming{color:#687792}.typing-target .char-correct{color:#2876de}.typing-target .char-wrong{color:#e2525c;background:#e2525c21;text-decoration:underline 2px}.sr-only{position:absolute!important;height:1px;width:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.typing-target .char-current{border-inline-start:2px solid #2475ee;animation:caret-blink 1.1s step-end infinite}.typing-input{position:absolute;inset:0;opacity:.01;resize:none;width:100%;height:100%;color:transparent;background:transparent;border:0;outline:none!important;caret-color:transparent;overflow:hidden;font-size:17px;line-height:1.65;z-index:2}.typing-input::selection{background:transparent}.typing-hint{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.5;min-height:18px}.test-footer{padding:15px 24px;display:flex;gap:12px;align-items:center;border-top:1px solid var(--border)}.test-footer>span{display:flex;gap:8px;color:var(--muted);font-size:12px;align-items:center;margin-right:auto}.secondary-btn,.primary-btn,.text-btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:9px;white-space:nowrap;font-weight:750;font-size:12px;min-height:38px;padding:9px 15px}.primary-btn{background:var(--blue);color:#fff}.primary-btn:hover{background:#195bce}.secondary-btn{border:1px solid var(--border);background:var(--card)}.secondary-btn:hover{border-color:var(--blue);color:var(--blue)}.text-btn{color:var(--blue);padding-inline:10px}.button-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.below-test{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:17px 0 30px}.micro-card{display:flex;align-items:start;gap:14px;background:var(--card);border:1px solid var(--border);padding:18px 20px;border-radius:13px;color:var(--blue)}.micro-card div{width:100%;color:var(--text)}.micro-card strong{display:block;font-size:13px;margin-bottom:6px}.micro-card span{display:block;color:var(--muted);font-size:12px}.progress{background:#e8eff8;height:7px;border-radius:40px;overflow:hidden;margin:12px 0 4px}.progress>div{background:var(--blue);height:100%;border-radius:40px;transition:width .2s}.app-footer{border-top:1px solid var(--border);padding:24px 0 32px;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:11px;color:var(--muted)}.app-footer div{display:flex;gap:20px}.app-footer button:hover{color:var(--blue)}.result-panel{margin:18px 0;padding:30px;background:var(--card);border:1px solid var(--border);border-radius:15px}.result-panel h2{font-size:64px;line-height:1;margin:20px 0;color:var(--blue);letter-spacing:-3px}.result-panel h2 small{font-size:18px;letter-spacing:0;color:var(--muted)}.result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:22px 0}.result-grid>div{border:1px solid var(--border);border-radius:10px;padding:15px;display:flex;flex-direction:column;gap:8px}.result-grid span{font-size:12px;color:var(--muted)}.result-grid strong{font-size:21px}.small-note{font-size:12px;color:var(--muted);line-height:1.6}.section-head{display:block;margin-bottom:26px}.section-head h1{margin-top:14px}.lesson-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.lesson{padding:25px;text-align:left;transition:transform .2s,border-color .2s}.lesson:hover{transform:translateY(-2px);border-color:#99b8f7}.lesson-number{font-size:12px;color:var(--blue);font-weight:800}.lesson h2{margin:12px 0;font-size:22px}.lesson p{font-size:13px;line-height:1.65;color:var(--muted);min-height:42px}.lesson-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:28px;color:var(--blue);font-size:12px;font-weight:700}.lesson-done{display:inline-flex;align-items:center;gap:5px}.smart-card{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:20px 0;padding:28px}.smart-card h2{font-size:24px;margin:11px 0}.smart-card p{font-size:13px;color:var(--muted);line-height:1.6}.weak-list{display:flex;gap:8px;flex-wrap:wrap;margin:15px 0 0}.weak-list span{border:1px solid var(--border);border-radius:8px;padding:7px 10px;font-size:12px;color:var(--muted)}.weak-list b{color:var(--blue);margin-inline-start:4px}.keyboard-card{padding:25px}.keyboard-card>label{font-size:12px;display:flex;gap:14px;align-items:center}.keyboard-card select,.settings-drawer select,.settings-drawer input[type=number],.code-language select{border:1px solid var(--border);border-radius:8px;padding:10px;color:var(--text);background:var(--card)}.visual-keyboard{padding:30px 10px;max-width:610px;margin:auto}.key-row{display:flex;justify-content:center;gap:7px;margin:9px 0}.keycap,.space-key{min-width:0;flex:1;max-width:56px;height:52px;display:grid;place-items:center;border:1px solid #ccd8ea;border-bottom:4px solid #ccd8ea;border-radius:8px;font-size:14px;font-weight:700;color:var(--text);background:var(--bg)}.space-key{max-width:270px;font-size:11px;color:var(--muted)}.challenge-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.challenge{padding:24px;display:flex;align-items:flex-start;flex-direction:column}.challenge-icon{width:43px;height:43px;border-radius:12px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center}.challenge h2{font-size:17px;margin:17px 0 8px}.challenge p{font-size:12px;line-height:1.7;color:var(--muted);flex:1;min-height:45px}.challenge .secondary-btn{width:100%;margin-top:15px}.completed,.pending{font-size:11px;font-weight:800;color:#1e9668}.pending{color:var(--muted)}.challenge-calendar{margin:18px 0;padding:25px}.challenge-calendar h2{font-size:17px;margin:0 0 22px}.calendar-row{display:flex;gap:9px}.calendar-day{display:flex;flex-direction:column;gap:7px;align-items:center;justify-content:center;flex:1;background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:12px 4px;color:var(--muted)}.calendar-day.done{background:var(--blue-soft);color:var(--blue);border-color:#bfd2fd}.calendar-day strong{font-size:12px}.stat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.stat-card{border:1px solid var(--border);border-radius:12px;padding:20px;background:var(--card);display:flex;flex-direction:column;gap:9px}.stat-card span{font-size:12px;color:var(--muted)}.stat-card strong{font-size:26px}.stat-card small{font-size:11px;color:var(--muted)}.chart-card,.goal-card,.history-card,.backup-card{padding:26px;margin:16px 0}.chart-card h2,.goal-card h2,.history-card h2,.backup-card h2{font-size:17px;margin:0 0 10px}.chart-card p,.backup-card p{font-size:12px;color:var(--muted)}.chart{height:210px;display:flex;align-items:flex-end;justify-content:space-between;gap:12px;padding-top:12px}.bar-col{height:100%;width:14%;display:flex;align-items:center;gap:4px;flex-direction:column}.bar-value{height:20px;font-size:11px;font-weight:700;color:var(--muted)}.bar-track{width:min(100%,52px);display:flex;flex-direction:column;justify-content:flex-end;background:var(--bg);height:145px;border-radius:7px;overflow:hidden}.bar-fill{width:100%;background:linear-gradient(180deg,#4287f6,#2366dd);border-radius:7px 7px 0 0}.bar-day{font-size:11px;color:var(--muted);white-space:nowrap}.goal-heading{display:flex;justify-content:space-between;align-items:center;gap:10px}.goal-heading strong{font-size:13px}.goal-card span{display:block;font-size:12px;color:var(--muted);margin-top:10px}.table-scroll{overflow-x:auto}table{border-collapse:collapse;min-width:560px;width:100%}th,td{font-size:12px;text-align:start;padding:13px 10px;border-bottom:1px solid var(--border);white-space:nowrap}th{color:var(--muted);font-weight:800}.backup-card .button-row{margin:20px 0}.check-line{display:flex!important;align-items:center!important;flex-direction:row!important;gap:10px;font-size:12px}.danger-btn{color:#b53b46;font-size:12px;margin-top:15px}.custom-label,.code-language{display:flex;align-items:start;gap:14px;padding:12px 0;font-size:12px;color:var(--muted);flex-direction:column}.custom-label textarea{border:1px solid var(--border);padding:12px;width:100%;border-radius:10px;color:var(--text);background:var(--card)}.code-language{flex-direction:row;align-items:center}.menu-shade{position:fixed;inset:0;background:#0c172b59;z-index:10;cursor:default}.settings-drawer{position:fixed;inset:0 0 0 auto;z-index:11;background:var(--card);box-shadow:-5px 0 30px #0002;overflow:auto;width:min(370px,92vw);padding:25px;display:flex;flex-direction:column;gap:19px}.drawer-header{display:flex;align-items:center;justify-content:space-between}.drawer-header h2{margin:0;font-size:22px}.settings-drawer>label{display:flex;flex-direction:column;gap:7px;font-size:12px;color:var(--muted);font-weight:700}.settings-drawer label.check-line{color:var(--text)}.settings-drawer select,.settings-drawer input[type=number]{width:100%}.drawer-links{border-top:1px solid var(--border);padding-top:15px;display:flex;flex-direction:column;align-items:flex-start;gap:10px}.drawer-links button{font-size:13px;color:var(--text)}.drawer-links button:hover{color:var(--blue)}.info-page{padding:60px max(25px,calc((100vw - 900px)/2));margin:0 auto;max-width:1440px;min-height:70vh}.info-page h1{font-size:clamp(27px,5vw,44px);letter-spacing:-1px}.info-page h2{font-size:20px;margin-top:35px}.info-page p{color:var(--muted);line-height:1.85;font-size:15px}.info-page .lede{font-size:17px}.notice{background:#fff7e5;color:#785b25;border-radius:8px;padding:11px 15px;font-size:12px}.storage-warning{position:fixed;bottom:15px;left:15px;right:15px;z-index:20;background:#fff4dc;color:#6b4a10;border:1px solid #e8c477;border-radius:12px;padding:12px 18px;font-size:12px}.focus-mode .hero-title,.focus-mode .below-test,.focus-mode .test-top,.focus-mode .app-footer,.focus-mode .right-rail{display:none}.focus-mode .typing-panel{margin-top:5vh}@keyframes caret-blink{50%{border-inline-start-color:transparent}}:root[data-motion=reduced] *{animation:none!important;transition:none!important}:root[data-theme=dark]{--bg:#101827;--card:#1b2638;--text:#e9f0fc;--muted:#9aa9c0;--border:#33445a;--blue-soft:#233b63;--blue:#69a3ff}.ad-slot{color:var(--muted)}:root[data-theme=dark] .ad-slot{background:#1b2638}:root[data-theme=dark] .typing-target .char-upcoming{color:#6e809b}:root[data-theme=dark] .typing-target .char-correct{color:#80b9ff}:root[data-theme=dark] .keycap,:root[data-theme=dark] .space-key{border-color:#405671}:root[data-theme=dark] .progress{background:#2b3b54}@media(max-width:1150px){.page-layout{grid-template-columns:minmax(0,1fr) 260px;gap:20px;padding-inline:24px}.header-inner{padding-inline:24px;gap:15px}.right-rail{width:260px}.nav-tab{padding-inline:10px}.brand{font-size:17px}}@media(max-width:950px){.right-rail{display:none}.page-layout{display:block;padding:23px 22px 0}.desktop-nav{display:none}.mobile-nav{display:flex;align-items:center;gap:6px;padding:10px 16px;overflow-x:auto;scrollbar-width:none;border-bottom:1px solid var(--border);background:var(--card)}.mobile-nav::-webkit-scrollbar{display:none}.mobile-nav .nav-tab{min-width:max-content}.site-header{height:60px}.header-inner{padding:0 18px}.hero-title{margin-top:13px}}@media(max-width:600px){.page-layout{padding:17px 15px 0}.hero-title{margin:8px 0 19px;align-items:end}.hero-title h1,.section-head h1{font-size:29px;margin:11px 0 8px}.hero-title p,.section-head p{font-size:12px}.hero-mini{min-width:94px;padding:10px 13px}.hero-mini strong{font-size:23px}.hero-mini span{font-size:10px}.brand{font-size:17px}.brand-mark{height:33px;width:33px}.language-pill{padding:0 9px}.test-top{padding:7px 9px}.mode-pill{padding:9px 12px}.controls-bar{padding:10px 4px 5px;gap:7px}.chip-list{gap:3px}.chip-list button{padding:8px 9px}.inline-select{min-width:95px;max-width:130px}.inline-select select{max-width:92px;font-size:11px}.typing-panel{margin-top:12px;min-height:293px}.test-status{padding:19px 17px 14px;grid-template-columns:1.5fr 1fr 1fr;gap:9px}.test-status strong{font-size:17px}.test-status strong.time-value{font-size:22px}.test-status .hide-small{display:none}.typing-workspace{margin:17px 16px 14px;min-height:105px}.typing-target{font-size:23px;max-height:151px;line-height:1.8}.typing-hint{font-size:11px}.test-footer{padding:11px 12px;gap:4px}.test-footer>span{display:none}.test-footer button{font-size:11px;padding:8px 10px}.below-test{gap:10px;margin-top:12px}.micro-card{padding:14px;gap:8px}.micro-card strong{font-size:12px}.micro-card span{font-size:11px}.result-panel{padding:21px}.result-panel h2{font-size:55px}.result-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-grid,.challenge-grid{grid-template-columns:1fr}.smart-card{display:block}.smart-card .primary-btn{margin-top:22px}.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.stat-card{padding:15px}.stat-card strong{font-size:23px}.chart-card,.goal-card,.history-card,.backup-card{padding:19px}.app-footer{flex-direction:column;align-items:flex-start}.keyboard-card{padding:15px}.keycap{height:36px;font-size:12px}.visual-keyboard{padding:15px 0}.challenge{padding:20px}.info-page{padding:30px 22px}.test-footer .text-btn{margin-left:auto}html[data-keyboard=open] .hero-title,html[data-keyboard=open] .below-test,html[data-keyboard=open] .test-top,html[data-keyboard=open] .mobile-nav,html[data-keyboard=open] .app-footer,html[data-keyboard=open] .site-header{display:none}html[data-keyboard=open] .page-layout{padding-top:8px}html[data-keyboard=open] .typing-panel{margin-top:0}html[data-keyboard=open] .typing-workspace{min-height:75px}html[data-keyboard=open] .typing-target{max-height:110px}html[data-keyboard=open] .test-footer{padding:8px}html[data-keyboard=open] .main-content{padding-bottom:calc(var(--keyboard-height) + env(safe-area-inset-bottom) + 12px)}}@media(max-height:600px)and (orientation:landscape){.hero-title,.below-test{display:none}.page-layout{padding-top:10px}.test-status{padding-block:10px}.typing-workspace{margin-block:9px;min-height:70px}.typing-target{max-height:105px}.typing-panel{min-height:0}}.period-strip{display:flex;gap:7px;margin:-6px 0 18px;overflow-x:auto}.period-strip button{font-size:12px;font-weight:750;padding:9px 14px;border:1px solid var(--border);border-radius:9px;background:var(--card);white-space:nowrap}.period-strip button.active{background:var(--blue);color:#fff;border-color:var(--blue)}.achievements-card{padding:25px;margin:16px 0}.achievements-card h2{font-size:17px;margin:0 0 18px}.achievement-list{display:flex;flex-wrap:wrap;gap:10px}.achievement-list span{display:flex;align-items:center;gap:7px;font-size:12px;font-weight:700;border-radius:9px;padding:10px 14px;border:1px solid var(--border)}.achievement-list .locked{opacity:.55}.achievement-list .earned{background:var(--blue-soft);color:var(--blue);border-color:#b4caf2}.right-rail .ad-slot{height:auto;min-height:260px;display:block;text-align:center;padding:10px 0;overflow:hidden}.right-rail .ad-label{display:block;margin-bottom:8px;font-size:11px;color:var(--muted)}.typing-desktop-ad{width:100%;min-height:250px}