:root{--bg:#f8f7f2;--paper:#fffefa;--ink:#253c32;--muted:#69766c;--green:#315c47;--line:#e4e7dd;--serif:Georgia,'Times New Roman',serif;--radius:20px;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none;line-height:1.6}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button{color:inherit}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #b77a36;outline-offset:4px}button{border:0}h1,h2,h3,p{margin:0}h1{font-size:32px;line-height:1.45;letter-spacing:-1px}h2{font-size:22px;line-height:1.5;letter-spacing:-.5px}h3{font-size:17px}small{font-size:12px}.muted{color:var(--muted)}.eyebrow{font-size:11px;font-weight:650;letter-spacing:2px;color:#748274}.icon{width:21px;height:21px;flex-shrink:0;vertical-align:middle}.site-header{max-width:1200px;margin:auto;padding:27px 44px 22px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid 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var(--line);border-radius:16px;background:var(--paper);padding:21px;min-width:0}.word-card h3{font:28px var(--serif);margin-bottom:3px;overflow-wrap:anywhere}.word-top{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}.word-card .phonetic{font:12px sans-serif;color:#8a9481}.word-card .meaning{font-size:13px;margin:13px 0 0;color:#5f6d57;overflow-wrap:anywhere}.word-card .pos{font-size:11px;color:#8a957e;padding-right:7px}.word-card .example{margin-top:14px;border-top:1px solid var(--line);padding-top:13px;font-size:12px}.word-card .example p[lang=en]{font-size:14px;color:#4d6245;margin-bottom:4px}.attribution{font-size:9px;color:#68765f;margin-top:10px}.attribution summary{cursor:pointer;min-height:44px;display:flex;align-items:center}.attribution summary:before{content:'＋';margin-right:4px}.attribution[open] summary:before{content:'−'}.attribution a{text-decoration:underline}.word-card .word-actions{display:flex;gap:3px}.word-state{font-size:10px;color:#7d896e}.pagination{display:flex;justify-content:center;align-items:center;gap:18px;margin:25px 0;font-size:12px}.result-count{color:var(--muted);font-size:12px;margin:15px 0}.empty{padding:60px 20px;text-align:center;background:#f0f2e9;border:1px dashed #d8dfcb;border-radius:19px}.empty>.icon{width:39px;height:39px;color:#91a17e;margin-bottom:15px}.empty h2{font-size:21px}.empty p{font-size:13px;color:var(--muted);max-width:420px;margin:10px auto 20px}.practice-panel{max-width:660px;margin:0 auto}.practice-card{text-align:center;background:var(--paper);border:1px solid var(--line);border-radius:23px;padding:37px 35px;margin-top:24px;min-height:360px;display:flex;flex-direction:column;justify-content:center;position:relative}.practice-card .word{font:50px var(--serif);overflow-wrap:anywhere;margin:35px 0 10px}.practice-card .question-zh{font-size:25px;line-height:1.6;margin:30px 0;overflow-wrap:anywhere}.practice-card .hint{font-size:12px;color:#89937e;margin:10px 0 25px}.practice-card .answer{font-size:16px;color:#54664b;margin:20px 0;padding-top:22px;border-top:1px solid var(--line)}.practice-card .answer p{margin-bottom:10px}.practice-card .answer .muted{font-size:13px}.practice-card .answer .example{font-size:15px}.ratings{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}.ratings button{border:1px solid #e1e5d7;background:#fffefa;min-height:60px;border-radius:12px;font-size:13px}.ratings button small{display:block;font-size:10px;color:#8b9282}.ratings button[data-rating=known]{background:var(--green);color:#fff;border-color:var(--green)}.ratings button[data-rating=known] small{color:#c8d7bc}.ratings button[data-rating=unknown]{background:#f4e9e2;color:#a47758}.progress-track{height:5px;background:#e6ebde;border-radius:10px;overflow:hidden;margin:12px 0}.progress-track span{display:block;height:100%;background:#6c8c55;transition:width .2s}.practice-toolbar{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted)}.practice-mode-card{border:1px solid var(--line);padding:25px;border-radius:17px;background:var(--paper);margin:18px 0}.practice-mode-card p{color:var(--muted);font-size:13px;margin:9px 0 17px}.settings-row{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:12px 0;font-size:13px}.settings-row select{min-width:110px}dialog{color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:22px;max-width:600px;width:calc(100% - 32px);max-height:85dvh;padding:30px;box-shadow:0 20px 70px #1532232b}dialog::backdrop{background:#19332788;backdrop-filter:blur(4px)}dialog h2{font-size:23px;margin:0 0 16px}dialog p{font-size:14px;color:#69765e;margin:14px 0}dialog ol{padding-left:22px;font-size:14px;color:#69765e}dialog li{margin:9px 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.15s}#toast.visible{opacity:1;transform:translate(-50%,0)}.skip-link{position:fixed;top:-80px;left:15px;z-index:100;background:#fff;padding:12px;border-radius:10px}.skip-link:focus{top:10px}.footer-note{font-size:11px;text-align:center;color:#7f8b72;margin:30px 0 0}.footer-note a{min-height:44px;display:inline-flex;align-items:center;text-decoration:underline}.title-inline{display:flex;gap:12px;align-items:center}.mini-label{font-size:10px;color:#879179;text-transform:uppercase;letter-spacing:1px}.full-span{grid-column:1/-1}.voice-note{font-size:11px;color:#7d8971;margin-top:16px}.split-heading{margin:30px 0 15px}.word-card .icon-button.saved{background:#e9efdf;color:var(--green)}
@media(min-width:1400px){.site-header{max-width:1260px}#main{max-width:1120px;padding-top:36px}.hero{min-height:290px}}
@media(max-width:1199px){.site-header{margin:0 30px;padding:24px 0}#main{margin:0 30px}.travel-art{right:15px;width:310px}.dashboard{grid-template-columns:minmax(0,1fr) 290px;gap:20px}.category-card{padding:19px}.hero{padding:30px}.hero h1{font-size:35px}}
@media(max-width:850px){.dashboard{grid-template-columns:minmax(0,1fr) 250px;gap:18px}.category-grid{gap:10px}.category-card{padding:17px 14px}.category-card h3{font-size:16px}.category-card p{font-size:10px}.daily-card{padding:20px 15px}.hero-copy{max-width:65%}.hero h1{font-size:32px}.travel-art{width:255px;right:0;top:25px}.hero p{font-size:12px}.category-card:last-child{gap:13px;padding:17px 14px}.hero{min-height:270px}}
@media(max-width:650px){.site-header{margin:0 20px;padding:20px 0 17px}.brand{font-size:19px;gap:9px}.brand-mark{width:39px;height:39px;font-size:29px;border-radius:12px}.brand small{font-size:8px;letter-spacing:2px}.header-actions{gap:4px}.status-pill{padding:0 8px;font-size:10px;min-height:44px}.help-button{display:none}#main{margin:0 20px;padding-top:22px;padding-bottom:112px}.welcome-row{font-size:11px;margin-bottom:18px}.welcome-row .date{font-size:10px}.hero{min-height:250px;border-radius:19px;padding:24px 22px;margin-bottom:19px;align-items:flex-start}.hero-copy{max-width:76%}.hero .eyebrow{font-size:9px;letter-spacing:1.5px}.hero h1{font-size:29px;line-height:1.5;margin:10px 0}.hero p{font-size:11px;max-width:190px;margin-bottom:19px}.hero .button{min-height:42px;padding:9px 14px;font-size:11px}.travel-art{width:187px;height:190px;top:auto;bottom:-8px;right:-38px;opacity:.9}.dashboard{display:flex;flex-direction:column;gap:22px}.dashboard>aside{display:grid;grid-template-columns:1fr;gap:14px}.section-heading{margin-bottom:14px}.section-heading h2{font-size:18px}.section-heading p{font-size:10px}.section-heading .subtle{font-size:10px}.category-card{padding:17px 16px}.category-card h3{font-size:17px}.category-card .en{font-size:8px;letter-spacing:1px}.category-card p{font-size:10px;line-height:1.8}.category-card-top{margin-bottom:13px}.category-icon{width:40px;height:40px;border-radius:12px}.category-icon .icon{width:23px;height:23px}.category-card .count{font-size:9px}.category-card:last-child{padding:16px;gap:17px}.search-form{margin-bottom:25px;padding-left:13px;gap:9px}.search-form input{font-size:12px}.search-form button{font-size:11px;padding:0 12px}.daily-card{padding:22px;display:grid;grid-template-columns:112px 1fr;gap:0 23px}.daily-card .section-heading{grid-column:1/-1;margin-bottom:18px}.daily-card .progress-ring{width:110px;height:110px;grid-row:2/4;margin:0}.daily-numbers{margin:0 0 12px;align-items:center}.daily-card .footnote{grid-column:1/-1;margin-top:15px}.word-of-day{margin:0;padding:20px 23px}.word-of-day h3{font-size:27px}.word-of-day .quote{margin-top:8px}.gentle-note{font-size:10px;margin-top:24px}.bottom-nav{bottom:0;width:100%;max-width:none;border-radius:18px 18px 0 0;border-bottom:0;padding:7px 12px calc(7px + env(safe-area-inset-bottom));box-shadow:0 -3px 20px #233b3107}.nav-item{flex-direction:column;gap:2px;min-height:52px;font-size:10px;border-radius:11px}.nav-item .icon{width:21px;height:21px}.page-head{gap:12px;margin-bottom:20px}.page-head h1{font-size:26px}.page-head p{font-size:12px}.page-head>.button{font-size:11px;padding:9px 12px}.scene-grid{grid-template-columns:1fr;gap:12px}.scene-card{padding:20px}.scene-card h3{font-size:16px}.phrase-list{grid-template-columns:1fr}.phrase-card{padding:20px}.phrase-card h3{font-size:20px}.bubble{padding:14px 17px;max-width:94%}.bubble .english{font-size:17px}.stats-strip{padding:17px 3px;gap:0}.stats-strip strong{font-size:24px}.stats-strip>div{font-size:10px}.study-banner{padding:21px;flex-direction:column;align-items:stretch;gap:16px}.study-banner .buttons{display:grid;grid-template-columns:1fr 1fr}.study-banner .buttons .button{padding:10px;font-size:12px}.filter-form{flex-wrap:wrap}.filter-form .search-form{flex-basis:100%;order:1}.filter-form select{width:100%;max-width:none}.word-grid{grid-template-columns:1fr}.word-card{padding:21px}.word-card h3{font-size:29px}.word-card .meaning{font-size:13px}.form-row{gap:10px}.form-row label{font-size:11px}.practice-card{padding:30px 22px;min-height:340px}.practice-card .word{font-size:42px}.practice-card .question-zh{font-size:22px}.practice-card .answer{font-size:15px}.ratings{gap:7px}.ratings button{font-size:12px}.practice-toolbar{font-size:11px}.practice-toolbar .button{font-size:11px}.practice-mode-card{padding:21px}.breadcrumb{font-size:11px}dialog{padding:24px}.settings-row{font-size:12px}.page-head .eyebrow{font-size:10px}.tabs{gap:6px}.tabs button{padding:8px 13px;font-size:11px}#toast{bottom:90px}.footer-note{font-size:10px}.warning{font-size:11px}.title-inline .category-icon{width:45px;height:45px}}
@media(max-width:359px){.site-header,#main{margin-left:15px;margin-right:15px}.brand{font-size:17px}.status-pill{font-size:9px;gap:5px;padding:0 7px}.hero{padding:22px 18px}.hero h1{font-size:26px}.hero p{max-width:165px}.travel-art{width:164px;right:-37px;bottom:-19px}.category-card{padding:15px 12px}.category-card p{font-size:9px}.daily-card{padding:20px 15px;gap:0 15px}.daily-card .progress-ring{width:100px;height:100px}.category-card h3{font-size:16px}.ratings button{font-size:11px}.word-card{padding:18px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* Keep mobile overrides at the required touch-target size. */
.brand,.button,.hero .button,.search-form input{min-height:44px}
.attribution a,.source-link{display:inline-flex;align-items:center;min-height:44px;min-width:44px}
/* Account access uses the same mobile layout as the learning application. */
[hidden]{display:none!important}
.login-card{max-width:440px;margin:45px auto;padding:28px;border:1px solid #e1e5da;border-radius:22px;background:#fff}
.login-card h1{font-size:28px;margin:12px 0}
.login-card p{line-height:1.7;color:#667568}
.login-card form{display:grid;gap:18px;margin-top:24px}
.login-card label{display:grid;gap:8px;font-size:14px}
.login-card input{box-sizing:border-box;width:100%;min-height:48px;border:1px solid #c8d2c6;border-radius:10px;padding:10px 12px;font:inherit;font-size:16px}
.login-card #login-error{margin:0;color:#9c3333;font-size:14px;min-height:0}
.login-note{font-size:12px;margin-top:22px}
.logout-button{min-width:44px;padding:8px;font-size:12px}
@media(max-width:400px){.login-card{padding:20px;margin:24px auto}.header-actions{gap:4px}.header-actions .status-pill{padding:8px;font-size:10px}}