@charset "UTF-8";:root{--max-width:100vw;--header-height:60px;--background-color-rgb:255, 255, 255;--text-color-rgb:0, 0, 0;--theme-color:rgba(var(--theme-color-rgb), 1.0);--background-color:rgba(var(--background-color-rgb), 1.0);--text-color:#666;--content-padding:15px;--heading-color:#444;--shade-color:#f6f6f6;--hover-color:#111}@media(min-width:576px){:root{--max-width:540px}}@media(min-width:768px){:root{--max-width:720px}}@media(min-width:992px){:root{--header-height:75px;--max-width:960px}}@media(min-width:1200px){:root{--max-width:1140px}}:root{--gray-100:#f8f9fa;--gray-200:#e9ecef;--gray-500:#adb5bd;--color-link:#0055bb;--color-visited-link:#8440f1;--body-background:white;--body-font-color:black;--icon-filter:none;--hint-color-info:#6bf;--hint-color-warning:#fd6;--hint-color-danger:#f66}/*!normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css*/html{line-height:1.15;-webkit-text-size-adjust:100%}body{margin:0}main{display:block}h1{font-size:2em;margin:.67em 0}hr{box-sizing:content-box;height:0;overflow:visible}pre{font-family:monospace,monospace;font-size:1em}a{background-color:transparent}abbr[title]{border-bottom:none;text-decoration:underline;text-decoration:underline dotted}b,strong{font-weight:bolder}code,kbd,samp{font-family:monospace,monospace;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}img{border-style:none}button,input,optgroup,select,textarea{font-family:inherit;font-size:100%;line-height:1.15;margin:0}button,input{overflow:visible}button,select{text-transform:none}button,[type=button],[type=reset],[type=submit]{-webkit-appearance:button}button::-moz-focus-inner,[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner{border-style:none;padding:0}button:-moz-focusring,[type=button]:-moz-focusring,[type=reset]:-moz-focusring,[type=submit]:-moz-focusring{outline:1px dotted ButtonText}fieldset{padding:.35em .75em .625em}legend{box-sizing:border-box;color:inherit;display:table;max-width:100%;padding:0;white-space:normal}progress{vertical-align:baseline}textarea{overflow:auto}[type=checkbox],[type=radio]{box-sizing:border-box;padding:0}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}details{display:block}summary{display:list-item}template{display:none}[hidden]{display:none}.flex{display:flex}.flex-auto{flex:auto}.flex-even{flex:1 1}.flex-wrap{flex-wrap:wrap}.justify-start{justify-content:flex-start}.justify-end{justify-content:flex-end}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.align-center{align-items:center}.mx-auto{margin:0 auto}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.hidden{display:none}input.toggle{height:0;width:0;overflow:hidden;opacity:0;position:absolute}.clearfix::after{content:"";display:table;clear:both}html{font-size:16px;scroll-behavior:smooth;touch-action:manipulation}body{min-width:20rem;color:var(--body-font-color);background:var(--body-background);letter-spacing:.33px;font-weight:400;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;box-sizing:border-box}body *{box-sizing:inherit}h1,h2,h3,h4,h5{font-weight:400}a{text-decoration:none;color:var(--color-link)}img{vertical-align:baseline}:focus{outline-style:auto;outline-color:currentColor;outline-color:-webkit-focus-ring-color}aside nav ul{padding:0;margin:0;list-style:none}aside nav ul li{margin:1em 0;position:relative}aside nav ul a{display:block}aside nav ul a:hover{opacity:.5}aside nav ul ul{padding-inline-start:1rem}ul.pagination{display:flex;justify-content:center;list-style-type:none;padding-inline-start:0}ul.pagination .page-item a{padding:1rem}.container{max-width:80rem;margin:0 auto}.book-icon{filter:var(--icon-filter)}.book-brand{margin-top:0;margin-bottom:1rem}.book-brand img{height:1.5em;width:1.5em;margin-inline-end:.5rem}.book-menu{flex:0 0 16rem;font-size:.875rem}.book-menu .book-menu-content{width:16rem;padding:1rem;background:var(--body-background);position:fixed;top:0;bottom:0;overflow-x:hidden;overflow-y:auto}.book-menu a,.book-menu label{color:inherit;cursor:pointer;word-wrap:break-word}.book-menu a.active{color:var(--color-link)}.book-menu input.toggle+label+ul{display:none}.book-menu input.toggle:checked+label+ul{display:block}.book-menu input.toggle+label::after{content:"▸"}.book-menu input.toggle:checked+label::after{content:"▾"}body[dir=rtl] .book-menu input.toggle+label::after{content:"◂"}body[dir=rtl] .book-menu input.toggle:checked+label::after{content:"▾"}.book-section-flat{margin:2rem 0}.book-section-flat>a,.book-section-flat>span,.book-section-flat>label{font-weight:bolder}.book-section-flat>ul{padding-inline-start:0}.book-page{min-width:20rem;flex-grow:1;padding:1rem}.book-post{margin-bottom:3rem}.book-header{display:none;margin-bottom:1rem}.book-header label{line-height:0}.book-header img.book-icon{height:1.5em;width:1.5em}.book-search{position:relative;margin:1rem 0;border-bottom:1px solid transparent}.book-search input{width:100%;padding:.5rem;border:0;border-radius:.25rem;background:var(--gray-100);color:var(--body-font-color)}.book-search input:required+.book-search-spinner{display:block}.book-search .book-search-spinner{position:absolute;top:0;margin:.5rem;margin-inline-start:calc(100% - 1.5rem);width:1rem;height:1rem;border:1px solid transparent;border-top-color:var(--body-font-color);border-radius:50%;animation:spin 1s ease infinite}@keyframes spin{100%{transform:rotate(360deg)}}.book-search small{opacity:.5}.book-toc{flex:0 0 16rem;font-size:.75rem}.book-toc .book-toc-content{width:16rem;padding:1rem;position:fixed;top:0;bottom:0;overflow-x:hidden;overflow-y:auto}.book-toc img{height:1em;width:1em}.book-toc nav>ul>li:first-child{margin-top:0}.book-footer{padding-top:1rem;font-size:.875rem}.book-footer img{height:1em;width:1em;margin-inline-end:.5rem}.book-comments{margin-top:1rem}.book-languages{margin-block-end:2rem}.book-languages .book-icon{height:1em;width:1em;margin-inline-end:.5em}.book-languages ul{padding-inline-start:1.5em}.book-menu-content,.book-toc-content,.book-page,.book-header aside,.markdown{transition:.2s ease-in-out;transition-property:transform,margin,opacity,visibility;will-change:transform,margin,opacity}@media screen and (max-width:56rem){#menu-control,#toc-control{display:inline}.book-menu{visibility:hidden;margin-inline-start:-16rem;font-size:16px;z-index:1}.book-toc{display:none}.book-header{display:block}#menu-control:focus~main label[for=menu-control]{outline-style:auto;outline-color:currentColor;outline-color:-webkit-focus-ring-color}#menu-control:checked~main .book-menu{visibility:initial}#menu-control:checked~main .book-menu .book-menu-content{transform:translateX(16rem);box-shadow:0 0 .5rem rgba(0,0,0,.1)}#menu-control:checked~main .book-page{opacity:.25}#menu-control:checked~main .book-menu-overlay{display:block;position:absolute;top:0;bottom:0;left:0;right:0}#toc-control:focus~main label[for=toc-control]{outline-style:auto;outline-color:currentColor;outline-color:-webkit-focus-ring-color}#toc-control:checked~main .book-header aside{display:block}body[dir=rtl] #menu-control:checked~main .book-menu .book-menu-content{transform:translateX(-16rem)}}@media screen and (min-width:80rem){.book-page,.book-menu .book-menu-content,.book-toc .book-toc-content{padding:2rem 1rem}}@font-face{font-family:roboto;font-style:normal;font-weight:400;font-display:swap;src:local(""),url(fonts/roboto-v27-latin-regular.woff2)format("woff2"),url(fonts/roboto-v27-latin-regular.woff)format("woff")}@font-face{font-family:roboto;font-style:normal;font-weight:700;font-display:swap;src:local(""),url(fonts/roboto-v27-latin-700.woff2)format("woff2"),url(fonts/roboto-v27-latin-700.woff)format("woff")}@font-face{font-family:roboto mono;font-style:normal;font-weight:400;font-display:swap;src:local(""),url(fonts/roboto-mono-v13-latin-regular.woff2)format("woff2"),url(fonts/roboto-mono-v13-latin-regular.woff)format("woff")}body{font-family:times new roman,microsoft yahei,sans-serif}code{font-family:times new roman,microsoft yahei,monospace}@media print{.book-menu,.book-footer,.book-toc{display:none}.book-header,.book-header aside{display:block}main{display:block!important}}.markdown{line-height:1.6}.markdown>:first-child{margin-top:0}.markdown h1,.markdown h2,.markdown h3,.markdown h4,.markdown h5,.markdown h6{font-weight:400;line-height:1;margin-top:1.5em;margin-bottom:1rem}.markdown h1 a.anchor,.markdown h2 a.anchor,.markdown h3 a.anchor,.markdown h4 a.anchor,.markdown h5 a.anchor,.markdown h6 a.anchor{opacity:0;font-size:.75em;vertical-align:middle;text-decoration:none}.markdown h1:hover a.anchor,.markdown h1 a.anchor:focus,.markdown h2:hover a.anchor,.markdown h2 a.anchor:focus,.markdown h3:hover a.anchor,.markdown h3 a.anchor:focus,.markdown h4:hover a.anchor,.markdown h4 a.anchor:focus,.markdown h5:hover a.anchor,.markdown h5 a.anchor:focus,.markdown h6:hover a.anchor,.markdown h6 a.anchor:focus{opacity:initial}.markdown h4,.markdown h5,.markdown h6{font-weight:bolder}.markdown h5{font-size:.875em}.markdown h6{font-size:.75em}.markdown b,.markdown optgroup,.markdown strong{font-weight:bolder}.markdown a{text-decoration:none}.markdown a:hover{text-decoration:underline}.markdown a:visited{color:var(--color-visited-link)}.markdown img{max-width:100%;height:auto}.markdown code{direction:ltr;unicode-bidi:embed;padding:0 .25rem;background:var(--gray-200);border-radius:.25rem;font-size:.875em}.markdown pre{direction:ltr;unicode-bidi:embed;padding:1rem;background:var(--gray-100);border-radius:.25rem;overflow-x:auto}.markdown pre code{padding:0;background:0 0}.markdown p{word-wrap:break-word}.markdown blockquote{margin:1rem 0;padding:.5rem 1rem .5rem .75rem;border-inline-start:.25rem solid var(--gray-200);border-radius:.25rem}.markdown blockquote :first-child{margin-top:0}.markdown blockquote :last-child{margin-bottom:0}.markdown table{overflow:auto;display:block;border-spacing:0;border-collapse:collapse;margin-top:1rem;margin-bottom:1rem}.markdown table tr th,.markdown table tr td{padding:.5rem 1rem;border:1px solid var(--gray-200)}.markdown table tr:nth-child(2n){background:var(--gray-100)}.markdown hr{height:1px;border:none;background:var(--gray-200)}.markdown ul,.markdown ol{padding-inline-start:2rem;word-wrap:break-word}.markdown dl dt{font-weight:bolder;margin-top:1rem}.markdown dl dd{margin-inline-start:0;margin-bottom:1rem}.markdown .highlight{direction:ltr;unicode-bidi:embed}.markdown .highlight table tr td:nth-child(1) pre{margin:0;padding-inline-end:0}.markdown .highlight table tr td:nth-child(2) pre{margin:0;padding-inline-start:0}.markdown details{padding:1rem;border:1px solid var(--gray-200);border-radius:.25rem}.markdown details summary{line-height:1;padding:1rem;margin:-1rem;cursor:pointer}.markdown details[open] summary{margin-bottom:0}.markdown figure{margin:1rem 0}.markdown figure figcaption p{margin-top:0}.markdown-inner>:first-child{margin-top:0}.markdown-inner>:last-child{margin-bottom:0}.markdown .book-expand{margin-top:1rem;margin-bottom:1rem;border:1px solid var(--gray-200);border-radius:.25rem;overflow:hidden}.markdown .book-expand .book-expand-head{background:var(--gray-100);padding:.5rem 1rem;cursor:pointer}.markdown .book-expand .book-expand-content{display:none;padding:1rem}.markdown .book-expand input[type=checkbox]:checked+.book-expand-content{display:block}.markdown .book-tabs{margin-top:1rem;margin-bottom:1rem;border:1px solid var(--gray-200);border-radius:.25rem;overflow:hidden;display:flex;flex-wrap:wrap}.markdown .book-tabs label{display:inline-block;padding:.5rem 1rem;border-bottom:1px transparent;cursor:pointer}.markdown .book-tabs .book-tabs-content{order:999;width:100%;border-top:1px solid var(--gray-100);padding:1rem;display:none}.markdown .book-tabs input[type=radio]:checked+label{border-bottom:1px solid var(--color-link)}.markdown .book-tabs input[type=radio]:checked+label+.book-tabs-content{display:block}.markdown .book-tabs input[type=radio]:focus+label{outline-style:auto;outline-color:currentColor;outline-color:-webkit-focus-ring-color}.markdown .book-columns{margin-left:-1rem;margin-right:-1rem}.markdown .book-columns>div{margin:1rem 0;min-width:10rem;padding:0 1rem}.markdown a.book-btn{display:inline-block;font-size:.875rem;color:var(--color-link);line-height:2rem;padding:0 1rem;border:1px solid var(--color-link);border-radius:.25rem;cursor:pointer}.markdown a.book-btn:hover{text-decoration:none}.markdown .book-hint.info{border-color:#6bf;background-color:rgba(102,187,255,.1)}.markdown .book-hint.warning{border-color:#fd6;background-color:rgba(255,221,102,.1)}.markdown .book-hint.danger{border-color:#f66;background-color:rgba(255,102,102,.1)}:root{--max-width:100vw;--header-height:60px;--background-color-rgb:255, 255, 255;--text-color-rgb:0, 0, 0;--theme-color:rgba(var(--theme-color-rgb), 1.0);--background-color:rgba(var(--background-color-rgb), 1.0);--text-color:#666;--content-padding:15px;--heading-color:#444;--shade-color:#f6f6f6;--hover-color:#111}@media(min-width:576px){:root{--max-width:540px}}@media(min-width:768px){:root{--max-width:720px}}@media(min-width:992px){:root{--header-height:75px;--max-width:960px}}@media(min-width:1200px){:root{--max-width:1140px}}body{font-family:noto serif sc,source han serif sc,songti sc,stsong,simsun,serif}code{font-family:cascadia mono,consolas,fira code,monospace}th{background:#ead9b9;word-wrap:break-word;text-align:center}html{scrollbar-width:thin;scrollbar-color:transparent transparent}body,.book-menu-content,.book-toc-content,.markdown pre,.markdown table{scrollbar-width:thin;scrollbar-color:transparent transparent}body:hover,.book-menu-content:hover,.book-toc-content:hover,.markdown pre:hover,.markdown table:hover{scrollbar-color:rgba(143,49,31,.42)rgba(111,84,66,8%)}body::-webkit-scrollbar,.book-menu-content::-webkit-scrollbar,.book-toc-content::-webkit-scrollbar,.markdown pre::-webkit-scrollbar,.markdown table::-webkit-scrollbar{width:5px;height:5px}body::-webkit-scrollbar-track,.book-menu-content::-webkit-scrollbar-track,.book-toc-content::-webkit-scrollbar-track,.markdown pre::-webkit-scrollbar-track,.markdown table::-webkit-scrollbar-track{background:rgba(111,84,66,8%);border-radius:999px}body::-webkit-scrollbar-thumb,.book-menu-content::-webkit-scrollbar-thumb,.book-toc-content::-webkit-scrollbar-thumb,.markdown pre::-webkit-scrollbar-thumb,.markdown table::-webkit-scrollbar-thumb{background:0 0;border-radius:999px;border:0 solid transparent;background-clip:padding-box;transition:background .18s ease}body:hover::-webkit-scrollbar-thumb,.book-menu-content:hover::-webkit-scrollbar-thumb,.book-toc-content:hover::-webkit-scrollbar-thumb,.markdown pre:hover::-webkit-scrollbar-thumb,.markdown table:hover::-webkit-scrollbar-thumb{background:linear-gradient(180deg,rgba(184,69,47,.42),rgba(143,49,31,.62));background-clip:padding-box}body:hover::-webkit-scrollbar-thumb:hover,.book-menu-content:hover::-webkit-scrollbar-thumb:hover,.book-toc-content:hover::-webkit-scrollbar-thumb:hover,.markdown pre:hover::-webkit-scrollbar-thumb:hover,.markdown table:hover::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,rgba(184,69,47,.56),rgba(143,49,31,.78));background-clip:padding-box}:root{--ink-900:#2f1f16;--ink-700:#5d4332;--ink-500:#7f624c;--paper-100:#f8f2e5;--paper-200:#efe4d0;--paper-300:#e7d7bf;--seal-600:#8e2e1b;--seal-500:#b8452f}body{color:var(--ink-900);background:radial-gradient(circle at 95% 5%,rgba(178,140,93,.16),transparent 38%),linear-gradient(180deg,#fbf7ef 0%,#f4ecd9 100%)}.book-menu .book-menu-content,.book-toc .book-toc-content,.book-page{background:0 0}.book-menu .book-menu-content,.book-toc .book-toc-content{background-image:linear-gradient(180deg,rgba(255,251,242,.92),rgba(244,234,214,.9)),repeating-linear-gradient(90deg,rgba(127,98,76,.035) 0,rgba(127,98,76,.035) 1px,transparent 1px,transparent 8px);border-inline-end:1px solid rgba(84,48,25,.12)}.book-brand,.book-menu label,.book-menu a,.book-toc a,.book-header{color:var(--ink-900)}.book-menu a.active,.book-menu a:hover,.book-toc a:hover{color:var(--seal-600)}.book-toc nav#TableOfContents a{display:block;padding:.18rem .5rem .18rem .56rem;border-inline-start:1px solid rgba(184,69,47,.14);border-radius:0 8px 8px 0;transition:color .2s ease,background-color .2s ease,border-color .2s ease}.book-toc nav#TableOfContents a.active,.book-toc nav#TableOfContents li.active>a,.book-toc nav#TableOfContents a[aria-current=true]{color:var(--seal-600);background:rgba(184,69,47,6%);border-inline-start:2px solid rgba(184,69,47,.72);font-weight:600}.book-search input{background:rgba(248,241,225,.95);border:1px solid rgba(106,74,52,.22);color:var(--ink-900)}.book-search input:focus{border-color:rgba(142,46,27,.6);box-shadow:0 0 0 3px rgba(184,69,47,.16)}.markdown{color:var(--ink-900);line-height:1.75}.markdown h1,.markdown h2,.markdown h3,.markdown h4{color:var(--ink-900);font-family:noto serif sc,source han serif sc,songti sc,stsong,simsun,serif;letter-spacing:.04em}.markdown h1{font-size:2rem}.markdown h2{border-bottom:1px solid rgba(120,78,50,.28);padding-bottom:.32rem}.markdown a{color:#5a2f1e;text-decoration:none}.markdown a:hover{color:var(--seal-600);text-decoration:none}.markdown a:visited{color:#5a2f1e;text-decoration:none}.markdown a[href^="#"]{font-weight:800;border-radius:.3rem;transition:background-color .2s ease,color .2s ease}.markdown a[href^="#"]:hover,.markdown a[href^="#"]:focus-visible{background-color:rgba(184,69,47,.12)}.markdown code{background:#f0e4ce;color:#5a2f1e;border:1px solid rgba(109,74,47,.16)}.markdown pre{background:#efe3cd;border:1px solid rgba(109,74,47,.18);box-shadow:inset 0 0 0 1px rgba(255,250,241,.45)}.markdown pre.mermaid{background:radial-gradient(circle at top right,rgba(184,69,47,8%),transparent 28%),linear-gradient(180deg,rgba(251,247,239,.96),rgba(239,227,205,.94));border:1px solid rgba(109,74,47,.22);border-radius:14px;padding:1rem 1.1rem;box-shadow:inset 0 0 0 1px rgba(255,251,242,.72),0 10px 24px rgba(76,48,30,8%);overflow-x:auto}.markdown pre.mermaid::before{content:"图解";display:inline-flex;align-items:center;margin-bottom:.8rem;padding:.18rem .6rem;border-radius:999px;background:rgba(184,69,47,.1);border:1px solid rgba(142,46,27,.16);color:var(--seal-600);font-size:.78rem;letter-spacing:.18em}.markdown pre.mermaid svg{display:block;width:100%;height:auto;min-width:640px;background:0 0}.markdown pre.mermaid .label,.markdown pre.mermaid .nodeLabel,.markdown pre.mermaid .edgeLabel{font-family:noto serif sc,source han serif sc,songti sc,stsong,simsun,serif}@media(max-width:768px){.markdown pre.mermaid{padding:.9rem .85rem;border-radius:12px}.markdown pre.mermaid svg{min-width:520px}}.markdown blockquote{background:rgba(230,214,186,.34);border-inline-start:4px solid #b26249;color:var(--ink-700)}.markdown table{border:1px solid rgba(109,74,47,.16);border-radius:8px}.markdown .table-full{width:100%;overflow-x:auto}.markdown .table-full table{display:table!important;width:100%!important;min-width:100%;table-layout:fixed}.markdown .table-full table td:first-child{text-align:center}.markdown table tr:nth-child(2n){background:rgba(231,216,191,.45)}.markdown hr{background:rgba(118,82,56,.28)}.book-page .book-post,.book-page .markdown.book-article{background:rgba(255,251,243,.74);border:1px solid rgba(107,74,51,.14);border-radius:12px;box-shadow:0 8px 20px rgba(76,48,30,8%);padding:1.25rem 1.2rem}ul.pagination .page-item a{color:var(--ink-700)}ul.pagination .page-item a:hover{color:var(--seal-600)}.footer-shell{--footer-bg-top:#f4ecd8;--footer-bg-bottom:#e8dcc1;--footer-border:rgba(84, 48, 25, 0.25);--footer-text:#3f2a1e;--footer-muted:#6f5442;--footer-heading:#2f1c12;--footer-link:#4a2d1f;--footer-link-hover:#8a1f11;--footer-card:rgba(252, 247, 236, 0.68);position:relative;background:radial-gradient(circle at 0% 0%,rgba(185,150,103,.2),transparent 46%),repeating-linear-gradient(90deg,rgba(126,84,52,5%) 0,rgba(126,84,52,5%) 1px,transparent 1px,transparent 9px),linear-gradient(180deg,var(--footer-bg-top) 0%,var(--footer-bg-bottom) 100%);color:var(--footer-text);border-top:1px solid var(--footer-border);box-shadow:inset 0 1px rgba(255,255,255,.34),0 -8px 24px rgba(57,32,17,8%);font-family:noto serif sc,source han serif sc,songti sc,stsong,simsun,serif;z-index:1}.footer-shell::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,#8e2e1b 0%,#b8452f 50%,#8e2e1b 100%);opacity:.75}.footer-shell .footer-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.1rem;padding:1.2rem 1rem .9rem}.footer-shell .footer-block{background:var(--footer-card);border:1px solid rgba(91,54,31,.2);border-radius:8px;padding:.9rem 1rem;backdrop-filter:blur(1px);box-shadow:inset 0 0 0 1px rgba(255,251,241,.62)}.footer-shell .footer-title{margin:0 0 .55rem;color:var(--footer-heading);font-size:1.04rem;letter-spacing:.08em;font-weight:600}.footer-shell .footer-copy{margin:0 0 .5rem;color:var(--footer-muted);text-align:left;line-height:1.65}.footer-shell .footer-nav{margin:0;padding:0}.footer-shell .footer-nav li{list-style:none;margin:.35rem 0}.footer-shell .footer-link,.footer-shell .footer-mail{color:var(--footer-link);text-decoration:none;border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}.footer-shell .footer-link:hover,.footer-shell .footer-link:focus-visible,.footer-shell .footer-mail:hover,.footer-shell .footer-mail:focus-visible{color:var(--footer-link-hover);border-color:rgba(138,31,17,.42)}.footer-shell .footer-contact{padding-left:0;padding-bottom:0;font-size:.9rem}.footer-shell .footer-contact svg{width:28px;height:28px;vertical-align:middle;fill:#fff8f2;background:linear-gradient(180deg,#b33f2a 0%,#8e2e1b 100%);border-radius:6px;box-shadow:0 2px 6px rgba(91,34,20,.28);margin:2px 9px 2px 0}.footer-shell .footer-copyright{text-align:center;margin-top:.5rem;padding:.75rem 1rem .9rem;border-top:1px solid rgba(91,54,31,.2);color:var(--footer-muted);font-size:.86rem;line-height:1.5;background:rgba(112,78,52,8%)}@media(max-width:768px){.footer-shell .footer-grid{grid-template-columns:1fr;padding:.95rem .8rem .7rem}.footer-shell .footer-block{padding:.75rem .8rem}.footer-shell .footer-copyright{padding:.65rem .8rem .8rem}}:root{--overlay-dark:rgba(0, 0, 0, 0.7);--surface:#fbf4e6;--radius-md:8px;--shadow-md:0 6px 14px rgba(76, 48, 30, 0.12);--motion-fast:0.3s ease}.hero{position:relative;background:linear-gradient(rgba(26,16,11,.68),rgba(26,16,11,.68)),radial-gradient(circle at 18% 20%,rgba(189,148,94,.23),transparent 35%),url(/images/herb-bg.jpg)50%/cover no-repeat;padding:5.3rem 1.2rem 4.8rem;text-align:center;color:#f9f1e2;overflow:hidden}.hero::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,rgba(246,235,214,.045) 0,rgba(246,235,214,.045) 1px,transparent 1px,transparent 9px);pointer-events:none}.hero::after{content:"";position:absolute;left:50%;bottom:.9rem;transform:translateX(-50%);width:68%;max-width:320px;height:2px;background:linear-gradient(90deg,transparent,rgba(184,69,47,.75),transparent)}.hero>*{position:relative;z-index:1}.hero h1,.hero h2{font-family:noto serif sc,source han serif sc,songti sc,stsong,simsun,serif;color:#fff6e8;letter-spacing:.1em;text-shadow:0 2px 14px rgba(20,12,8,.45)}.hero p{color:rgba(255,245,227,.92);max-width:760px;margin-inline:auto;line-height:1.7}.herb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1.5rem;margin-top:2rem}.herb-card{background:var(--surface);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-md);transition:transform var(--motion-fast),box-shadow var(--motion-fast);will-change:transform}.herb-link{display:block;color:inherit;text-decoration:none}.herb-thumb-wrap{aspect-ratio:4/3;overflow:hidden;background:rgba(247,234,209,.68)}.herb-thumb{width:100%;height:100%;object-fit:cover;display:block}.herb-card h3,.herb-card .herb-meta{padding:.75rem .9rem}.herb-card h3{margin:0;line-height:1.3}.herb-card .herb-meta{padding-top:.5rem}.herb-card .category{font-size:.875rem;opacity:.95;color:#6b4a35}.herb-card .herb-meta p{margin:.45rem 0 0}.herb-card:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(81,50,31,.18)}.herb-card:focus-within{outline:2px solid #9a3622;outline-offset:2px}@media(prefers-reduced-motion:reduce){.herb-card{transition:none;will-change:auto}}@media(max-width:768px){.book-page .book-post,.book-page .markdown.book-article{padding:1rem .85rem;border-radius:10px}.hero{padding:4.4rem 1rem 4rem}.hero h1,.hero h2{letter-spacing:.06em}}.landing-page{padding:1.2rem}.landing-hero{position:relative;overflow:hidden;border:1px solid rgba(118,82,56,.2);border-radius:16px;padding:2.4rem 1.6rem 2rem;background:radial-gradient(circle at 85% 15%,rgba(184,69,47,.12),transparent 36%),repeating-linear-gradient(90deg,rgba(123,86,57,.045) 0,rgba(123,86,57,.045) 1px,transparent 1px,transparent 10px),linear-gradient(180deg,#f9f1e2 0%,#efe1c8 100%);box-shadow:0 10px 28px rgba(86,53,32,.1)}.landing-hero::after{content:"";position:absolute;bottom:.9rem;left:50%;transform:translateX(-50%);width:72%;max-width:360px;height:2px;background:linear-gradient(90deg,transparent,rgba(184,69,47,.7),transparent)}.landing-badge{display:inline-block;margin:0 0 .9rem;font-size:.85rem;letter-spacing:.08em;color:#8b301e;background:rgba(255,247,235,.84);border:1px solid rgba(139,48,30,.26);padding:.28rem .62rem;border-radius:999px}.landing-hero h1{margin:0;font-size:clamp(1.7rem,3vw,2.35rem);line-height:1.2;letter-spacing:.08em}.landing-subtitle{margin:1rem 0 0;max-width:760px;color:#644937;line-height:1.75}.landing-actions{margin-top:1.25rem;display:flex;flex-wrap:wrap;gap:.72rem}.landing-btn{display:inline-flex;align-items:center;justify-content:center;padding:.58rem .95rem;appearance:none;border-radius:9px;border:1px solid rgba(107,74,53,.35);background:rgba(255,250,242,.72);color:#4f2f22!important;text-decoration:none;font:inherit;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,color .2s ease}.landing-btn:hover{transform:translateY(-1px);color:#8e2e1b!important;box-shadow:0 6px 14px rgba(86,50,30,.14)}.landing-btn.is-primary{border-color:rgba(143,49,31,.68);background:linear-gradient(180deg,#b64730 0%,#8f2f1b 100%);color:#fff7ed!important}.landing-btn.is-primary:hover{color:#fff!important}.landing-btn--ghost{background:rgba(255,248,239,.9);color:#5b3c2c!important;border-color:rgba(105,76,56,.24)}.landing-btn--ghost:hover{color:#4a2e1e!important}.landing-btn--secondary{border-color:rgba(143,49,31,.42);background:linear-gradient(180deg,#c75a42 0%,#a03a25 100%);color:#fff7ed!important}.landing-btn--secondary:hover{color:#fff!important}.landing-auth{margin-top:1rem;display:flex;flex-wrap:wrap;gap:.8rem;align-items:center;justify-content:space-between;border-radius:12px;border:1px solid rgba(109,76,54,.18);background:rgba(255,248,238,.72);padding:.8rem .9rem}.landing-auth__summary{display:grid;gap:.18rem}.landing-auth__eyebrow{font-size:.8rem;color:#7b5a46;letter-spacing:.04em}.landing-auth__email{color:#6b4b39;word-break:break-all}.landing-auth__actions{display:flex;flex-wrap:wrap;gap:.65rem}.landing-stats{margin-top:1.35rem;display:grid;gap:.6rem;grid-template-columns:repeat(3,minmax(0,1fr))}.stat-item{border-radius:10px;border:1px solid rgba(109,76,54,.2);background:rgba(255,249,238,.66);padding:.72rem .7rem}.stat-value{display:block;font-size:1.36rem;color:#8e2e1b;font-weight:700}.stat-label{display:block;margin-top:.2rem;color:#6d4d3c;font-size:.86rem}.landing-section{margin-top:1.6rem}.landing-section h2{margin-bottom:.7rem}.landing-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.8rem}.landing-card{border-radius:12px;border:1px solid rgba(112,79,55,.18);background:rgba(255,251,245,.72);padding:.86rem .9rem;text-decoration:none;color:inherit;box-shadow:0 6px 14px rgba(92,57,36,7%);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}.landing-card h3{margin:0 0 .38rem;color:#41291d;font-size:1rem}.landing-card p{margin:0;color:#6f5442;line-height:1.6;font-size:.92rem}.landing-card:hover{transform:translateY(-3px);box-shadow:0 10px 20px rgba(87,52,33,.12);border-color:rgba(143,49,31,.42)}.learning-path{margin:.7rem 0 0;padding:0;list-style:none;display:grid;gap:.7rem}.learning-path li{display:grid;grid-template-columns:58px 1fr;gap:.75rem;border-radius:12px;border:1px solid rgba(113,79,54,.17);background:rgba(252,247,236,.72);padding:.82rem .9rem}.path-step{display:inline-flex;align-items:center;justify-content:center;height:36px;border-radius:999px;color:#fff8f2;background:linear-gradient(180deg,#bc4c33 0%,#8f2f1b 100%);font-size:.86rem;font-weight:700;letter-spacing:.05em}.learning-path h3{margin:0;color:#3f281c;font-size:1rem}.learning-path p{margin:.35rem 0 0;color:#6f5442}.landing-quote{margin-top:1.6rem}.landing-quote blockquote{margin:0;border-inline-start:4px solid rgba(180,69,47,.65);background:rgba(233,217,190,.45);border-radius:10px}.theory-quick-grid{margin-top:.6rem;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.75rem}.theory-quick-card{display:block;border-radius:12px;border:1px solid rgba(112,79,55,.2);background:radial-gradient(circle at 92% 16%,rgba(184,69,47,8%),transparent 38%),linear-gradient(180deg,rgba(255,250,242,.9) 0%,rgba(247,237,220,.88) 100%);padding:.85rem .9rem;text-decoration:none;color:inherit;box-shadow:0 6px 14px rgba(92,57,36,8%);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}.theory-quick-card h3{margin:0;color:#3e271b;font-size:1rem}.theory-quick-card p{margin:.34rem 0 0;color:#6d5140;line-height:1.55;font-size:.9rem}.theory-quick-card:hover{transform:translateY(-2px);box-shadow:0 11px 20px rgba(87,52,33,.14);border-color:rgba(143,49,31,.42)}@media(max-width:960px){.theory-quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.theory-quick-grid{grid-template-columns:1fr}}.taxonomy-overview,.taxonomy-term-page{padding:1.1rem}.taxonomy-hero{position:relative;overflow:hidden;margin-bottom:1.2rem;border-radius:16px;border:1px solid rgba(110,78,55,.18);background:radial-gradient(circle at 92% 16%,rgba(184,69,47,.1),transparent 32%),repeating-linear-gradient(90deg,rgba(124,88,57,4%) 0,rgba(124,88,57,4%) 1px,transparent 1px,transparent 10px),linear-gradient(180deg,#faf2e5 0%,#efe0c6 100%);padding:1.6rem 1.25rem 1.35rem;box-shadow:0 10px 22px rgba(83,53,34,8%)}.taxonomy-hero::after{content:"";position:absolute;bottom:.8rem;left:50%;transform:translateX(-50%);width:64%;max-width:260px;height:2px;background:linear-gradient(90deg,transparent,rgba(184,69,47,.68),transparent)}.auth-card{margin:1.5rem auto 0;max-width:520px;border-radius:16px;border:1px solid rgba(110,78,55,.18);background:radial-gradient(circle at 90% 10%,rgba(184,69,47,.12),transparent 34%),linear-gradient(180deg,rgba(255,252,246,.95) 0%,rgba(246,236,217,.9) 100%);box-shadow:0 12px 24px rgba(88,53,35,.1);padding:1.4rem 1.35rem}.auth-card__header{text-align:center;margin-bottom:1.1rem}.auth-card__badge{display:inline-flex;align-items:center;min-height:28px;margin:0 0 .65rem;padding:.2rem .62rem;border-radius:999px;border:1px solid rgba(139,48,30,.24);background:rgba(255,247,235,.82);color:#8b301e;font-size:.82rem}.auth-card__header h1{margin:0;font-size:clamp(1.5rem,2.5vw,1.9rem);color:#3f281c}.auth-card__subtitle{margin:.55rem 0 0;color:#684d3b;line-height:1.72}.auth-card__status{margin-bottom:1rem;padding:.8rem .85rem;border-radius:12px;border:1px solid rgba(109,76,54,.18);background:rgba(255,248,238,.72);display:grid;gap:.2rem}.auth-card__status span{color:#7a5a45;font-size:.82rem}.auth-card__email{color:#614839;word-break:break-all}.auth-card__tabs{display:inline-grid;grid-template-columns:repeat(2,minmax(0,1fr));border-radius:10px;border:1px solid rgba(118,86,63,.22);background:rgba(255,249,240,.86);overflow:hidden}.auth-tab{min-height:40px;min-width:90px;border:0;background:0 0;color:#654b3b;font:inherit;cursor:pointer}.auth-tab.is-active{background:linear-gradient(180deg,#b64730 0%,#8f2f1b 100%);color:#fff9f1}.auth-form{margin-top:.85rem;display:grid;gap:.8rem}.auth-form.is-hidden{display:none}.auth-form label{display:grid;gap:.35rem}.auth-form span{color:#5e4737;font-size:.9rem}.auth-form input{width:100%;min-height:42px;padding:.65rem .75rem;border-radius:10px;border:1px solid rgba(118,86,63,.28);background:rgba(255,252,247,.95);color:#2a1e18;caret-color:#2a1e18}.auth-form input::placeholder{color:#7c6251}.auth-form button,.auth-actions button{min-height:42px;padding:.65rem .9rem;border:1px solid rgba(143,49,31,.52);border-radius:10px;background:linear-gradient(180deg,#b64730 0%,#8f2f1b 100%);color:#fff8f1;cursor:pointer}.auth-actions button.is-secondary{border-color:rgba(105,76,56,.25);background:rgba(255,248,239,.9);color:#55392a}.auth-actions{display:flex;flex-wrap:wrap;gap:.7rem}.auth-card__feedback{margin:.75rem 0 0;color:#654b3b;min-height:1.4em;transition:color .2s ease;text-align:center}.auth-card__feedback.is-error{color:#8b301e}.auth-card__feedback.is-success{color:#2e5c2e}.auth-logged-in{display:grid;gap:1rem}.auth-logged-in__profile{display:flex;align-items:center;gap:.85rem;padding:.9rem;border-radius:12px;border:1px solid rgba(109,76,54,.18);background:rgba(255,248,238,.72)}.auth-logged-in__avatar{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;background:rgba(184,69,47,.12);font-size:1.5rem}.auth-logged-in__info{display:grid;gap:.2rem}.auth-logged-in__info strong{color:#3f281c;font-size:1.1rem}.auth-logged-in__info span:not(.auth-role-badge){color:#6b4b39;font-size:.9rem;word-break:break-all}.auth-role-badge{display:inline-flex;align-items:center;justify-self:start;padding:.15rem .55rem;border-radius:999px;background:rgba(184,69,47,.12);border:1px solid rgba(142,46,27,.2);color:#8e2e1b;font-size:.8rem}.auth-logged-in__hint{margin:0;color:#6b4b39;line-height:1.6;text-align:center}.auth-card__actions{margin-top:.8rem;display:flex;flex-wrap:wrap;gap:.65rem;justify-content:center}.auth-card__meta{margin:.78rem 0 0;color:#735746;font-size:.86rem;text-align:center}.auth-more-methods{margin-top:1.25rem;padding-top:1.1rem;border-top:1px dashed rgba(118,86,63,.28)}.auth-more-methods__title{margin:0 0 .75rem;text-align:center;color:#7a5a45;font-size:.88rem}.auth-more-methods__note{margin:.75rem 0 0;text-align:center;color:#7a5a45;font-size:.82rem;line-height:1.55}.auth-method-list{margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:.65rem;justify-content:center}.auth-method{display:flex;align-items:center;gap:.55rem;padding:.55rem .75rem;border-radius:12px;border:1px solid rgba(118,86,63,.18);background:rgba(255,252,247,.9);min-width:0}.auth-method.is-coming-soon{opacity:.72}.auth-method__icon{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:rgba(184,69,47,.1);font-size:1rem;flex-shrink:0}.auth-method__body{display:grid;gap:.05rem;flex:1;min-width:0}.auth-method__body strong{color:#3f281c;font-size:.88rem}.auth-method__body span{color:#7a5a45;font-size:.76rem}.auth-method__tag{flex-shrink:0;padding:.1rem .4rem;border-radius:999px;border:1px solid rgba(120,88,65,.2);background:rgba(255,249,239,.86);color:#7a5a45;font-size:.7rem}.auth-profile-summary{color:#7a5a45;font-size:.82rem;word-break:break-all}.auth-form__group{padding:.85rem .75rem;border-radius:12px;border:1px dashed rgba(118,86,63,.22);background:rgba(255,251,244,.68);display:grid;gap:.7rem}.auth-form__group-title{margin:0;color:#7a5a45;font-size:.85rem}.auth-form__row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem}.auth-form select{width:100%;min-height:42px;padding:.65rem .75rem;border-radius:10px;border:1px solid rgba(118,86,63,.28);background:rgba(255,252,247,.95);color:#2a1e18;font:inherit;appearance:auto}.auth-form select:invalid,.auth-form select option[value=""]{color:#7c6251}@media(max-width:720px){.auth-card{margin:1rem .5rem 0;padding:1.1rem 1rem}.auth-form__row{grid-template-columns:1fr}.auth-method-list{flex-direction:column;align-items:stretch}.auth-method{width:100%;box-sizing:border-box}}.account-center{margin-top:1rem}.account-center__hero,.account-center__card{border-radius:14px;border:1px solid rgba(111,80,57,.18);background:linear-gradient(180deg,rgba(255,251,245,.94) 0%,rgba(245,236,219,.9) 100%);box-shadow:0 10px 20px rgba(90,58,38,8%)}.account-center__hero{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.9rem;padding:1rem 1.05rem}.account-center__eyebrow{display:inline-block;margin-bottom:.35rem;color:#7a5a45;font-size:.82rem}.account-center__hero h2{margin:0}.account-center__hero p{margin:.35rem 0 0;color:#654c3b}.account-center__hero-actions{display:flex;flex-wrap:wrap;gap:.7rem;align-items:center}.account-center__grid{margin-top:.85rem;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.85rem}.account-center__card{margin-top:.85rem;padding:1rem 1.05rem}.account-center__card h3{margin-top:0}.account-center__card-head{display:flex;align-items:center;justify-content:space-between;gap:.6rem}.account-center__chip{display:inline-flex;align-items:center;min-height:24px;padding:0 .55rem;border-radius:999px;border:1px solid rgba(120,88,65,.2);background:rgba(255,249,239,.86);color:#7a5a45;font-size:.78rem}.account-center__chip--live{border-color:rgba(76,140,74,.35);background:rgba(232,245,233,.9);color:#2e5c2e}.account-center__chip--live::before{content:'';display:inline-block;width:7px;height:7px;margin-right:.35rem;border-radius:50%;background:#4caf50}.account-center__list{margin:0;display:grid;gap:.8rem}.account-center__list div{display:grid;gap:.18rem}.account-center__list dt{color:#7a5a45;font-size:.84rem}.account-center__list dd{margin:0;color:#3f291d;font-weight:600;word-break:break-all}.account-center__tips{margin:0;padding-left:1.15rem;color:#654c3b}.account-center__tips a{color:#5a3a2a;text-decoration:underline;text-underline-offset:.15em}.account-center__tips a:hover{color:#3f291d}.account-center__records{margin:0;padding:0;list-style:none;display:grid;gap:.55rem}.account-center__record-item{padding:.62rem .7rem;border-radius:10px;border:1px solid rgba(116,85,63,.16);background:rgba(255,251,244,.8);display:grid;gap:.22rem}.account-center__record-item a{color:#4d3022;text-decoration:none;font-weight:600}.account-center__record-item a:hover{text-decoration:underline}.account-center__record-item span{color:#725746;font-size:.84rem}.account-center__record-empty{padding:.65rem .7rem;border-radius:10px;border:1px dashed rgba(118,87,64,.24);color:#7a5d49;background:rgba(255,250,244,.68)}.account-center__debug{margin-top:.85rem}.account-center__debug h3{margin-top:0;margin-bottom:.7rem}.account-center pre{margin:0;overflow-x:auto;border-radius:10px;background:#2a1e18;color:#f6ede4;padding:.9rem;line-height:1.6}@media(max-width:720px){.account-center__grid{grid-template-columns:1fr}.account-center__hero-actions{width:100%}}.account-center__card--wide{grid-column:1/-1}.account-form{display:grid;gap:.8rem;margin-top:.5rem}.account-form label{display:grid;gap:.35rem}.account-form span{color:#5e4737;font-size:.9rem}.account-form input,.account-form select{width:100%;min-height:42px;padding:.65rem .75rem;border-radius:10px;border:1px solid rgba(118,86,63,.28);background:rgba(255,252,247,.95);color:#2a1e18;font:inherit}.account-form select:invalid,.account-form select option[value=""]{color:#7c6251}.account-form__row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem}.account-form__actions{display:flex;gap:.7rem;margin-top:.25rem}.account-center__chip--success{border-color:rgba(76,140,74,.35);background:rgba(232,245,233,.9);color:#2e5c2e}.account-center__chip--error{border-color:rgba(184,69,47,.35);background:rgba(255,239,235,.9);color:#8e2e1b}@media(max-width:720px){.account-form__row{grid-template-columns:1fr}}.menu-auth{margin:0 0 1rem;padding:.75rem .8rem;border-radius:12px;border:1px solid rgba(111,80,57,.18);background:linear-gradient(180deg,rgba(255,250,243,.96) 0%,rgba(244,234,216,.92) 100%);box-shadow:0 8px 16px rgba(90,58,38,8%)}.menu-auth__summary{display:grid;gap:.15rem}.menu-auth__eyebrow{color:#7a5a45;font-size:.78rem}.menu-auth__email{color:#674c3c;font-size:.84rem;word-break:break-all}.menu-auth__actions{margin-top:.6rem;display:flex;flex-direction:column;gap:.45rem}.menu-auth__link{display:inline-flex;align-items:center;justify-content:center;min-height:34px;width:100%;box-sizing:border-box;padding:.45rem .7rem;border-radius:9px;border:1px solid rgba(143,49,31,.42);background:linear-gradient(180deg,#b64730 0%,#8f2f1b 100%);color:#fff7ed!important;text-decoration:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font:inherit;cursor:pointer}.menu-auth__link.is-ghost{border-color:rgba(105,76,56,.24);background:rgba(255,248,239,.94);color:#55392a!important}.book-menu .book-menu-content .menu-auth__link,.book-menu .book-menu-content .menu-auth__link.is-ghost{border-radius:9px}.taxonomy-badge{display:inline-block;margin:0 0 .75rem;padding:.28rem .62rem;border-radius:999px;font-size:.84rem;letter-spacing:.08em;color:#8e2e1b;background:rgba(255,248,238,.8);border:1px solid rgba(142,46,27,.22)}.taxonomy-hero h1{margin:0;font-size:clamp(1.55rem,2.8vw,2.15rem);letter-spacing:.08em}.taxonomy-lead{margin:.85rem 0 0;max-width:760px;color:#6f5442;line-height:1.72}.taxonomy-summary{margin-top:1rem}.taxonomy-summary span{display:inline-flex;align-items:center;gap:.35rem;padding:.34rem .7rem;border-radius:999px;background:rgba(255,250,242,.76);border:1px solid rgba(111,84,66,.16);color:#5b3d2b;font-size:.88rem}.taxonomy-term-grid,.taxonomy-item-grid{display:grid;gap:.9rem}.taxonomy-term-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.taxonomy-item-grid{grid-template-columns:repeat(auto-fill,minmax(270px,1fr))}.taxonomy-term-card,.taxonomy-item-card{display:block;text-decoration:none;color:inherit;border-radius:14px;border:1px solid rgba(111,84,66,.16);background:rgba(255,251,243,.76);box-shadow:0 8px 18px rgba(83,53,34,7%);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}.taxonomy-term-card{padding:.95rem .95rem .88rem}.taxonomy-item-card{padding:1rem .95rem .9rem}.taxonomy-term-card:hover,.taxonomy-item-card:hover{transform:translateY(-3px);border-color:rgba(143,49,31,.34);box-shadow:0 12px 24px rgba(83,53,34,.11)}.taxonomy-term-head{display:flex;align-items:center;justify-content:space-between;gap:.8rem}.taxonomy-term-card h2,.taxonomy-item-card h2{margin:0;color:#3e281c;font-size:1.02rem;line-height:1.35}.taxonomy-term-card p,.taxonomy-item-card p{margin:.55rem 0 0;color:#6f5442;line-height:1.6;font-size:.92rem}.taxonomy-count{flex:none;min-width:2rem;height:2rem;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;background:linear-gradient(180deg,#bc4c33 0%,#8f2f1b 100%);color:#fff7ed;font-size:.88rem;font-weight:700}.taxonomy-term-card .taxonomy-term-lead{color:#5a4031;font-size:.92rem;line-height:1.55;margin-top:.55rem}.taxonomy-term-card .taxonomy-term-count{color:#8c6b57;font-size:.82rem;margin-top:.45rem}.term-chip-group{display:flex;flex-wrap:wrap;gap:.38rem;margin-top:.8rem}.term-chip{display:inline-flex;align-items:center;padding:.2rem .52rem;border-radius:999px;background:rgba(232,217,193,.7);color:#6a4a37;font-size:.8rem}.term-chip.is-tag{background:rgba(188,76,51,.12);color:#8e2e1b}@media(max-width:768px){.taxonomy-overview,.taxonomy-term-page{padding:.55rem}.taxonomy-hero{padding:1.2rem .95rem 1.05rem;border-radius:12px}.taxonomy-term-grid,.taxonomy-item-grid{grid-template-columns:1fr}}.scroll-reveal{animation:fadeUp .55s ease both}@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media(max-width:980px){.landing-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:768px){.landing-page{padding:.65rem}.landing-hero{padding:1.5rem 1rem 1.35rem;border-radius:12px}.landing-hero h1{font-size:1.55rem;letter-spacing:.04em}.landing-stats{grid-template-columns:1fr}.landing-auth{align-items:flex-start}.landing-auth__actions{width:100%}.landing-grid{grid-template-columns:1fr}.learning-path li{grid-template-columns:52px 1fr}}@media(prefers-reduced-motion:reduce){.scroll-reveal,.landing-btn,.landing-card{animation:none;transition:none}}.markdown .book-hint{border-inline-start-width:4px;border-radius:0 6px 6px 0;padding:.55em 1em .55em 1.1em;margin:.55em 0;background:unset;color:unset;font-style:normal}.markdown .book-hint p{margin:0;line-height:1.75}.markdown .book-hint.info{border-color:var(--seal-600);background:linear-gradient(100deg,rgba(142,46,27,7%) 0%,rgba(248,242,229,.35) 100%);color:var(--seal-600);font-weight:600;letter-spacing:.06em;font-size:.96em;padding-block:.4em}.markdown .book-hint.info p{color:inherit}.markdown .book-hint.info strong{color:var(--seal-600);font-weight:700}.markdown .book-hint.warning{border-color:var(--ink-500);background:rgba(239,228,208,.42);color:var(--ink-900);font-size:.93em}.markdown .book-hint.warning p{color:var(--ink-900)}.markdown .book-hint.warning strong{color:var(--ink-700)}.markdown .book-hint.warning a{color:var(--seal-500)}.markdown .book-hint.warning a:hover{color:var(--seal-600)}.markdown .book-hint.danger{border-color:var(--seal-500);background:rgba(184,69,47,6%);color:var(--ink-900);font-size:.93em}.markdown .book-hint.danger strong{color:var(--seal-500)}:root{--ink:#2C2C2A;--ink-light:#5F5E5A;--ink-faded:#888780;--paper:#F7F4ED;--paper-dark:#EDE8DC;--seal:#A32D2D;--seal-light:#FCEBEB;--bamboo:#1D9E75;--bamboo-light:#E1F5EE;--gold:#BA7517;--gold-light:#FAEEDA;--porcelain:#185FA5;--porcelain-light:#E6F1FB}.book-menu .book-menu-content{background-image:linear-gradient(180deg,rgba(255,251,242,.96),rgba(247,244,237,.94)),repeating-linear-gradient(90deg,rgba(44,44,42,3%) 0,rgba(44,44,42,3%) 1px,transparent 1px,transparent 8px);border-inline-end:1px solid rgba(136,135,128,.18)}.book-menu .book-menu-content .book-brand a{color:var(--ink);font-family:noto serif sc,source han serif sc,songti sc,serif;letter-spacing:.04em}.book-menu .book-menu-content .book-brand a:hover{color:var(--seal)}.book-menu .book-menu-content .book-search input{background:rgba(255,255,255,.72);border:1px solid rgba(136,135,128,.25);color:var(--ink);border-radius:8px;font-family:noto sans sc,pingfang sc,microsoft yahei,sans-serif}.book-menu .book-menu-content .book-search input:focus{border-color:var(--seal);box-shadow:0 0 0 3px rgba(163,45,45,.12)}.book-menu .book-menu-content .book-search input::placeholder{color:var(--ink-faded)}.book-menu .book-menu-content ul li a,.book-menu .book-menu-content ul li span,.book-menu .book-menu-content ul li label{color:var(--ink);font-family:noto sans sc,pingfang sc,microsoft yahei,sans-serif}.book-menu .book-menu-content a{transition:color .2s ease,background-color .2s ease;border-radius:0 8px 8px 0}.book-menu .book-menu-content a:hover{color:var(--seal);background-color:rgba(163,45,45,5%)}.book-menu .book-menu-content a.active{color:var(--seal);background-color:rgba(163,45,45,8%);font-weight:600}.book-menu .book-menu-content li.book-section-flat>label,.book-menu .book-menu-content li>label{color:var(--ink-light)}.book-menu .book-menu-content li.book-section-flat>label:hover,.book-menu .book-menu-content li>label:hover{color:var(--seal)}.book-menu .book-menu-content li img,.book-menu .book-menu-content li .book-icon{filter:sepia(.15)}.book-toc .book-toc-content{background-image:linear-gradient(180deg,rgba(255,251,242,.96),rgba(247,244,237,.94)),repeating-linear-gradient(90deg,rgba(44,44,42,3%) 0,rgba(44,44,42,3%) 1px,transparent 1px,transparent 8px);border-inline-start:1px solid rgba(136,135,128,.18)}.book-toc .book-toc-content a{color:var(--ink-light);transition:color .2s ease,background-color .2s ease,border-color .2s ease}.book-toc .book-toc-content a:hover,.book-toc .book-toc-content a.active,.book-toc .book-toc-content a[aria-current=true]{color:var(--seal);background-color:rgba(163,45,45,6%);border-inline-start-color:var(--seal)}.admin-dashboard{margin-top:1rem}.admin-dashboard__header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 1.05rem;border-radius:14px;border:1px solid rgba(111,80,57,.18);background:linear-gradient(180deg,rgba(255,251,245,.94) 0%,rgba(245,236,219,.9) 100%);box-shadow:0 10px 20px rgba(90,58,38,8%)}.admin-dashboard__header h1{margin:.2rem 0 0;font-size:clamp(1.5rem,2.5vw,1.9rem)}.admin-dashboard__eyebrow{color:#7a5a45;font-size:.82rem}.admin-dashboard__actions{display:flex;flex-wrap:wrap;gap:.65rem}.admin-dashboard__content{margin-top:1rem;display:grid;gap:1rem}.admin-dashboard__stats{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:.85rem}a.admin-stat-card,.admin-stat-card{display:block;padding:1rem;border-radius:12px;border:1px solid rgba(111,80,57,.18);background:rgba(255,251,245,.86);text-align:center;text-decoration:none;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}a.admin-stat-card:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(90,58,38,.12);background:rgba(255,251,245,.98)}a.admin-stat-card:focus-visible{outline:2px solid rgba(142,46,27,.6);outline-offset:2px}.admin-stat-card__value{display:block;font-size:1.8rem;font-weight:700;color:#8e2e1b}.admin-stat-card__value--warning{color:#b94a48}.admin-stat-card__label{display:block;margin-top:.25rem;color:#6b4b39;font-size:.88rem}.admin-dashboard__card{padding:1rem 1.05rem;border-radius:14px;border:1px solid rgba(111,80,57,.18);background:linear-gradient(180deg,rgba(255,251,245,.94) 0%,rgba(245,236,219,.9) 100%);box-shadow:0 10px 20px rgba(90,58,38,8%)}.admin-dashboard__card-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.8rem;margin-bottom:.8rem}.admin-dashboard__card-head h2{margin:0}.admin-dashboard__toolbar{display:flex;gap:.5rem}.admin-search-input{min-height:38px;padding:.45rem .7rem;border-radius:9px;border:1px solid rgba(118,86,63,.28);background:rgba(255,252,247,.95);color:#2a1e18;font:inherit}.admin-table-wrap{overflow-x:auto;border-radius:10px;border:1px solid rgba(109,74,47,.16)}.admin-table{width:100%;border-collapse:collapse;margin:0;font-size:.92rem}.admin-table th,.admin-table td{padding:.7rem .8rem;text-align:left;border-bottom:1px solid rgba(109,74,47,.12)}.admin-table th{background:rgba(234,217,185,.72);color:#4a3020;font-weight:600}.admin-table tr:last-child td{border-bottom:none}.admin-table__empty{text-align:center;color:#7a5d49;padding:1.5rem}.admin-role{display:inline-flex;padding:.2rem .55rem;border-radius:999px;background:rgba(109,74,47,.1);color:#5b3c2c;font-size:.82rem}.admin-role.is-admin{background:rgba(184,69,47,.14);color:#8e2e1b}.admin-status-badge{display:inline-flex;padding:.2rem .55rem;border-radius:999px;font-size:.82rem}.admin-status-badge.is-active{background:rgba(76,175,80,.14);color:#2e5c2e}.admin-status-badge.is-inactive{background:rgba(139,48,30,.12);color:#8b301e}.admin-toggle-btn{min-height:32px;padding:.35rem .65rem;font-size:.86rem}.admin-pagination{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:.65rem;margin-top:.85rem}.admin-pagination__info{color:#6b4b39;font-size:.88rem}.admin-status__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem}.admin-status__item{display:grid;gap:.2rem;padding:.8rem;border-radius:10px;border:1px solid rgba(109,74,47,.14);background:rgba(255,251,244,.8)}.admin-status__item span{color:#7a5a45;font-size:.82rem}.admin-status__item strong{color:#3f291d;font-weight:600}.admin-status__loading,.admin-status__error{margin:0;color:#7a5d49}.admin-status__error{color:#8b301e}.admin-dashboard__denied{margin-top:1rem;padding:1.5rem 1.2rem;border-radius:14px;border:1px solid rgba(139,48,30,.2);background:rgba(255,248,239,.92);text-align:center}.admin-dashboard__denied h2{margin-top:0;color:#8e2e1b}.admin-dashboard__denied p{color:#6b4b39;margin-bottom:1.2rem}@media(max-width:720px){.admin-dashboard__stats{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-status__grid{grid-template-columns:1fr}.admin-stat-card__value{font-size:1.45rem}.admin-stat-card__label{font-size:.78rem}}@media(max-width:420px){.admin-dashboard__stats{grid-template-columns:1fr}.admin-dashboard__header,.admin-dashboard__card-head,.admin-dashboard__toolbar{flex-direction:column;align-items:flex-start}}.search-page{margin-top:1rem}.search-page__hero{text-align:center;margin-bottom:1.25rem}.search-page__eyebrow{display:inline-block;margin-bottom:.35rem;padding:.15rem .55rem;border-radius:999px;border:1px solid rgba(139,48,30,.24);background:rgba(255,247,235,.82);color:#8b301e;font-size:.82rem}.search-page__hero h1{margin:.35rem 0 .55rem;font-size:clamp(1.5rem,3vw,2rem)}.search-page__hero p{margin:0;color:#6b4b39}.search-page__form{max-width:640px;margin:0 auto 1.25rem}.search-page__status{text-align:center;color:#6b4b39;margin-bottom:1rem}.search-page__status p{margin:.35rem 0}.search-page__meta{color:#7a5a45;font-size:.9rem}.search-page__list{margin:0;padding:0;list-style:none;display:grid;gap:.85rem}.search-page__item{padding:1rem 1.05rem;border-radius:12px;border:1px solid rgba(116,85,63,.16);background:rgba(255,251,244,.8);display:grid;gap:.35rem}.search-page__item a{color:#4d3022;text-decoration:none;font-weight:600;font-size:1.05rem}.search-page__item a:hover{text-decoration:underline;color:#8e2e1b}.search-page__section{color:#7a5a45;font-size:.82rem}.search-page__excerpt{margin:0;color:#5e4737;font-size:.9rem;line-height:1.6}.search-page__score{justify-self:start;padding:.12rem .45rem;border-radius:999px;border:1px solid rgba(120,88,65,.2);background:rgba(255,249,239,.86);color:#7a5a45;font-size:.75rem}.search-page__empty{text-align:center;padding:2rem 1rem;border-radius:12px;border:1px dashed rgba(118,87,64,.24);color:#6b4b39;background:rgba(255,250,244,.68)}.search-page__empty strong{color:#8e2e1b}@media(max-width:720px){.search-page__form{padding:0 .5rem}}.page-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.65rem}.page-actions .page-actions__buttons{display:flex;flex-wrap:wrap;gap:.55rem}.page-actions .page-actions__favorite,.page-actions .page-actions__note,.page-actions .page-actions__share{display:inline-flex;align-items:center;gap:.35rem;min-height:36px;padding:.45rem .75rem;border-radius:10px;border:1px solid rgba(143,49,31,.42);background:linear-gradient(180deg,#b64730 0%,#8f2f1b 100%);color:#fff7ed!important;font:inherit;cursor:pointer;transition:opacity .15s ease,transform .05s ease}.page-actions .page-actions__favorite:disabled,.page-actions .page-actions__note:disabled,.page-actions .page-actions__share:disabled{opacity:.65;cursor:not-allowed}.page-actions .page-actions__favorite--active{background:linear-gradient(180deg,#8e2e1b 0%,#6f2213 100%);color:#fff7ed!important}.page-actions .page-actions__share{border-color:rgba(105,76,56,.28);background:rgba(255,248,239,.92);color:#55392a!important}.page-actions .page-actions__favorite:hover,.page-actions .page-actions__note:hover{background:linear-gradient(180deg,#9e3a25 0%,#7e2716 100%);color:#fff!important}.page-actions .page-actions__share:hover{background:#fff8ef;color:#4a2e1e!important}.page-actions .page-actions__feedback{min-height:1.4em;font-size:.86rem;color:#6b4b39}.page-actions .page-actions__feedback--success{color:#2e5c2e}.page-actions .page-actions__feedback--error{color:#8e2e1b}.page-actions__note-panel{width:100%;margin-top:.75rem;padding:.85rem;border-radius:12px;border:1px solid rgba(118,86,63,.2);background:rgba(255,251,244,.95);box-shadow:0 8px 18px rgba(90,58,38,8%);display:grid;gap:.65rem}.page-actions__note-head{display:flex;justify-content:space-between;align-items:center;gap:.5rem}.page-actions__note-head strong{color:#3f281c;font-size:1rem}.page-actions__note-close{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:50%;background:rgba(184,69,47,.1);color:#8e2e1b;font-size:1.2rem;cursor:pointer}.page-actions__note-text{width:100%;padding:.65rem .75rem;border-radius:10px;border:1px solid rgba(118,86,63,.28);background:rgba(255,252,247,.95);color:#2a1e18;font:inherit;resize:vertical}.page-actions__note-text.page-actions__note-text--over{border-color:#8e2e1b;box-shadow:0 0 0 3px rgba(142,46,27,.12)}.page-actions__note-meta{display:flex;justify-content:flex-end;align-items:center}.page-actions__note-counter{font-size:.8rem;color:#7f624c;letter-spacing:.02em}.page-actions__note-counter--over{color:#8e2e1b;font-weight:600}.page-actions__note-foot{display:flex;flex-wrap:wrap;gap:.55rem}.page-actions .page-actions__note-save,.page-actions .page-actions__note-delete{display:inline-flex;align-items:center;justify-content:center;gap:.35rem;min-height:36px;padding:.45rem .85rem;border-radius:10px;font:inherit;cursor:pointer}.page-actions .page-actions__note-save{border:1px solid rgba(143,49,31,.42);background:linear-gradient(180deg,#b64730 0%,#8f2f1b 100%);color:#fff7ed!important}.page-actions .page-actions__note-save:hover{background:linear-gradient(180deg,#9e3a25 0%,#7e2716 100%);color:#fff!important}.page-actions .page-actions__note-delete{border:1px solid rgba(105,76,56,.28);background:rgba(255,248,239,.92);color:#55392a!important}.page-actions .page-actions__note-delete:hover{background:#fff8ef;color:#4a2e1e!important}.feedback-form{max-width:720px;margin:0 auto;padding:1.2rem}.feedback-form__intro{text-align:center;margin-bottom:1.5rem}.feedback-form__intro h1{margin:.35rem 0 .6rem;font-size:1.8rem;color:#3f281c}.feedback-form__intro p{color:#6f5442;line-height:1.7;max-width:560px;margin:0 auto}.feedback-form__eyebrow{display:inline-block;font-size:.8rem;letter-spacing:.08em;color:#8b301e;background:rgba(255,247,235,.84);border:1px solid rgba(139,48,30,.26);padding:.28rem .62rem;border-radius:999px}.feedback-form__body{background:rgba(255,251,243,.74);border:1px solid rgba(107,74,51,.14);border-radius:12px;box-shadow:0 8px 20px rgba(76,48,30,8%);padding:1.2rem;display:grid;gap:1rem}.feedback-form__guest{display:grid;gap:1rem}.feedback-form__honeypot{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.feedback-form__honeypot input{opacity:0;pointer-events:none}.feedback-form__field{display:grid;gap:.45rem}.feedback-form__field span{color:#5d4332;font-weight:500;font-size:.92rem}.feedback-form__field span em{color:#8e2e1b;font-style:normal}.feedback-form__field input,.feedback-form__field textarea{padding:.65rem .75rem;border-radius:10px;border:1px solid rgba(118,86,63,.28);background:rgba(255,252,247,.95);color:#2a1e18;font:inherit;font-size:.95rem}.feedback-form__field input:focus,.feedback-form__field textarea:focus{outline:none;border-color:rgba(142,46,27,.6);box-shadow:0 0 0 3px rgba(184,69,47,.16)}.feedback-form__field textarea{resize:vertical;min-height:160px}.feedback-form__counter{justify-self:flex-end;font-size:.8rem;color:#7f624c}.feedback-form__counter--over{color:#8e2e1b;font-weight:600}.feedback-form__actions{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center}.feedback-form__status{min-height:1.5em;margin:0;font-size:.92rem;color:#6b4b39}.feedback-form__status--success{color:#2e5c2e}.feedback-form__status--error{color:#8e2e1b}.feedback-form__note{margin-top:1.5rem;padding:1rem 1.15rem;background:rgba(233,217,190,.34);border-radius:10px;border-inline-start:4px solid #b26249}.feedback-form__note h2{margin:0 0 .6rem;font-size:1rem;color:#3f281c}.feedback-form__note ul{margin:0;padding-left:1.2rem;color:#6f5442;line-height:1.7;font-size:.92rem}.feedback-form__note li+li{margin-top:.35rem}@media(max-width:768px){.feedback-form{padding:1rem .85rem}.feedback-form__intro h1{font-size:1.5rem}.feedback-form__actions{flex-direction:column;align-items:stretch}}.admin-table__row--unread{background:rgba(184,69,47,4%)}.admin-table--feedback td:nth-child(5){max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.admin-feedback-read,.admin-feedback-delete{padding:.32rem .55rem;font-size:.82rem;min-height:28px}.admin-feedback-read+.admin-feedback-delete{margin-left:.35rem}.back-to-top{position:fixed;right:1.25rem;bottom:1.5rem;z-index:1000;display:flex;align-items:center;justify-content:center;width:2.75rem;height:2.75rem;border-radius:50%;border:1px solid rgba(118,86,63,.3);background:rgba(255,251,245,.92);color:#8e2e1b;box-shadow:0 4px 14px rgba(76,48,30,.14);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(.5rem);transition:opacity .2s ease,visibility .2s ease,transform .2s ease,background .2s ease;text-decoration:none}.back-to-top--visible{opacity:1;visibility:visible;transform:translateY(0)}.back-to-top:hover,.back-to-top:focus-visible{background:#8e2e1b;color:#fffbf5;outline:none}.back-to-top svg{display:block}@media(min-width:1100px){.back-to-top{right:2rem;bottom:2rem}}@media(max-width:768px){.back-to-top{right:.75rem;bottom:1rem;width:2.5rem;height:2.5rem}}