:root{color-scheme:light;--pc-bg: #F8F6F0;--pc-surface: #FFFFFF;--pc-surface-subtle: #F1F4F8;--pc-primary: #1648C5;--pc-on-primary: #FFFFFF;--pc-primary-container: #EAF0FF;--pc-on-primary-container: #14233B;--pc-secondary: #007F7A;--pc-on-secondary: #FFFFFF;--pc-secondary-container: #E5F4F1;--pc-on-secondary-container: #005C58;--pc-text: #14233B;--pc-text-muted: #506078;--pc-disabled: #6C7788;--pc-disabled-bg: #E7EAF0;--pc-border: #D8DEE7;--pc-control-border: #7C889A;--pc-success: #186B45;--pc-success-bg: #E9F6ED;--pc-error: #B3261E;--pc-error-bg: #FCEBE9;--pc-warning: #885400;--pc-warning-bg: #FFF2D8;--pc-selected: #1648C5;--pc-selected-bg: #EAF0FF;--pc-focus: #1648C5;--pc-inverse: #14233B;--pc-on-inverse: #F8F6F0;--pc-inverse-primary: #B7CAFF;--pc-font-ui: system-ui, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;--pc-font-hans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;--pc-font-hant: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;--pc-font-pinyin: Roboto, "Noto Sans", system-ui, sans-serif;--pc-space-1: 4px;--pc-space-2: 8px;--pc-space-3: 12px;--pc-space-4: 16px;--pc-space-5: 20px;--pc-space-6: 24px;--pc-space-8: 32px;--pc-space-12: 48px;--pc-radius-small: 8px;--pc-radius-control: 12px;--pc-radius-card: 16px;--pc-radius-sheet: 24px;--pc-touch-min: 48px;--pc-primary-height: 56px;--pc-fast: .12s;--pc-reveal: .18s;--pc-navigation: .24s;--pc-ease: cubic-bezier(.2,0,0,1)}body{margin:0;color:var(--pc-text);background:var(--pc-bg);font:1rem/1.625 var(--pc-font-ui)}*,*:before,*:after{box-sizing:border-box}button,input,textarea,select{font:inherit}.pc-container{max-inline-size:1120px;margin-inline:auto;padding-inline:16px}.pc-reading{max-inline-size:640px;margin-inline:auto}.pc-title{font-size:1.5rem;line-height:1.333;font-weight:700}.pc-hanzi{font-family:var(--pc-font-hans);font-style:normal;font-size:3rem;line-height:1.333;font-weight:500;letter-spacing:normal;overflow-wrap:anywhere}.pc-hanzi:lang(zh-Hant),.pc-hanzi:lang(zh-TW){font-family:var(--pc-font-hant)}.pc-hanzi[data-length=medium]{font-size:2.25rem;line-height:1.389}.pc-hanzi[data-length=long]{font-size:1.75rem;line-height:1.5;text-align:start}.pc-pinyin{font:400 1.375rem/1.545 var(--pc-font-pinyin);font-style:normal;overflow-wrap:anywhere}.pc-meaning{font-size:1.25rem;line-height:1.5;font-weight:500;overflow-wrap:anywhere}.pc-card{padding:20px;border:1px solid var(--pc-border);border-radius:var(--pc-radius-card);background:var(--pc-surface);min-inline-size:0}.pc-button{min-block-size:var(--pc-touch-min);min-inline-size:var(--pc-touch-min);border:1px solid var(--pc-control-border);border-radius:var(--pc-radius-control);padding:12px 20px;font-weight:600;line-height:1.5;white-space:normal;color:var(--pc-text);background:var(--pc-surface);cursor:pointer}.pc-button--primary{min-block-size:var(--pc-primary-height);border-color:var(--pc-primary);color:var(--pc-on-primary);background:var(--pc-primary)}.pc-button:disabled{cursor:default;color:var(--pc-disabled);background:var(--pc-disabled-bg);border-color:transparent}.pc-button:focus-visible,.pc-option:focus-visible,input:focus-visible,textarea:focus-visible,a:focus-visible{outline:3px solid var(--pc-focus);outline-offset:2px;box-shadow:0 0 0 2px var(--pc-surface)}.pc-field{display:block;inline-size:100%;min-block-size:56px;border:1px solid var(--pc-control-border);border-radius:var(--pc-radius-small);padding:12px;color:var(--pc-text);background:var(--pc-surface)}.pc-field[aria-invalid=true]{border:2px solid var(--pc-error)}.pc-option{display:flex;align-items:center;gap:12px;inline-size:100%;min-block-size:56px;height:auto;padding:16px;text-align:start;background:var(--pc-surface);color:var(--pc-text);border:1px solid var(--pc-control-border);border-radius:var(--pc-radius-control);white-space:normal;overflow-wrap:anywhere}.pc-option[data-state=selected]{border:2px solid var(--pc-selected);background:var(--pc-selected-bg)}.pc-option[data-state=correct]{border:2px solid var(--pc-success);background:var(--pc-success-bg)}.pc-option[data-state=wrong]{border:2px solid var(--pc-error);background:var(--pc-error-bg)}.pc-helper{color:var(--pc-text-muted);font-size:.875rem;line-height:1.429}.pc-actions{display:flex;flex-wrap:wrap;gap:8px}.pc-feedback{padding:16px;border-radius:var(--pc-radius-control)}.pc-feedback[data-kind=error]{background:var(--pc-error-bg);color:var(--pc-error)}.pc-feedback[data-kind=success]{background:var(--pc-success-bg);color:var(--pc-success)}.pc-feedback[data-kind=warning]{background:var(--pc-warning-bg);color:var(--pc-warning)}@media(min-width:600px){.pc-container{padding-inline:24px}}@media(min-width:1024px){.pc-container{padding-inline:32px}}@media(prefers-reduced-motion:reduce){:root{--pc-fast: 0ms;--pc-reveal: 0ms;--pc-navigation: 0ms}html:focus-within{scroll-behavior:auto}.pc-motion{animation:none!important;transition:none!important}}@media(hover:hover){.pc-button--primary:not(:disabled):hover{background-image:linear-gradient(#ffffff14,#ffffff14)}}.pc-button--primary:not(:disabled):active{background-image:linear-gradient(#ffffff1a,#ffffff1a)}:root{--bg:var(--pc-bg);--surface:var(--pc-surface);--ink:var(--pc-text);--muted:var(--pc-text-muted);--primary:var(--pc-primary);--teal:var(--pc-secondary);--border:var(--pc-border);--error:var(--pc-error);--radius:16px;--max:1120px;font-family:var(--pc-font-ui);color:var(--ink);background:var(--bg);font-synthesis:none}a{color:inherit;text-decoration:none}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.35;letter-spacing:-.035em;word-break:keep-all}p{overflow-wrap:anywhere}h2{font-size:clamp(1.5rem,3vw,2rem)}h3{font-size:1.25rem}small{font-size:.875rem}img{max-width:100%;height:auto}.wrap{max-width:1184px;padding-inline:32px;margin-inline:auto}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 20px;border-radius:12px;font-weight:600;font-size:1rem;border:1px solid var(--pc-control-border);text-align:center;line-height:1.5;white-space:normal;cursor:pointer}.primary{min-height:56px;border-color:var(--primary);background:var(--primary);color:#fff}.secondary{background:var(--surface);color:var(--ink)}.compact{padding:10px 14px}.full{width:100%}.actions{display:flex;gap:12px;flex-wrap:wrap}.eyebrow{color:var(--teal);font-size:.875rem;font-weight:600}.lead{font-size:1.125rem;color:var(--muted);line-height:1.7}.scope{color:var(--muted);font-size:.875rem;line-height:1.6}.text-link{display:inline-block;min-height:48px;padding-block:12px;color:var(--primary);font-weight:600}.skip-link{position:fixed;top:-100px;left:16px;padding:12px;background:var(--surface);z-index:100}.skip-link:focus{top:8px}.status{font-size:.875rem;color:var(--error)}.status:empty{display:none}.hanzi{font-family:var(--pc-font-hans);font-size:3rem;line-height:1.333;font-weight:500;font-style:normal;overflow-wrap:anywhere}.pinyin{font-family:var(--pc-font-pinyin);color:var(--muted);font-size:1.375rem;line-height:1.545;overflow-wrap:anywhere}.meaning{font-size:1.25rem;font-weight:500;line-height:1.5;overflow-wrap:anywhere}.icon-button{min-width:48px;min-height:48px;background:var(--surface);border:1px solid var(--pc-control-border);border-radius:12px;font-size:1.25rem}.site-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:20px}.brand{display:flex;align-items:center;gap:10px;font-size:1rem;font-weight:700}.brand img{border-radius:8px}.brand small{display:block;color:var(--muted);font-weight:400}.brand-text{font-size:1.25rem;font-weight:700}.brand-text small{font-weight:400;color:var(--muted)}.site-header nav{display:flex;align-items:center;gap:24px}.section{padding-block:64px}.section-head{margin-bottom:24px}.section-head h2{margin-top:8px}.section-head p{margin-top:12px;color:var(--muted)}button:disabled{cursor:default;color:var(--pc-disabled);background:var(--pc-disabled-bg);border-color:transparent;opacity:1}:focus-visible{outline:3px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 2px var(--surface)}.primary:hover{background-image:linear-gradient(#ffffff14,#ffffff14)}.primary:active{background-image:linear-gradient(#ffffff1a,#ffffff1a)}@media(max-width:1023px){.wrap{padding-inline:24px}}@media(max-width:599px){.wrap{padding-inline:16px}.site-header nav>a:not(.button){display:none}.brand small{display:none}.actions{flex-direction:column}.actions .button{width:100%}.section{padding-block:48px}.lead{font-size:1rem}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}