:root{font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;color:#081a3a;background:#fff;--blue:#2563eb;--ink:#081a3a;--muted:#61738f;--line:#dce5f0}*{box-sizing:border-box}body{margin:0;background:#fff}a{color:inherit;text-decoration:none}.kb-container{width:min(calc(100% - 64px),1290px);margin:auto}.kb-header{height:74px;border-bottom:1px solid #eef2f7;background:#ffffffeb}.kb-nav{height:100%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center}.kb-brand{display:inline-flex;align-items:center;gap:10px;font-weight:780;letter-spacing:-.035em}.kb-brand img{width:32px;height:32px;object-fit:contain}.kb-nav-links{display:flex;gap:38px;font-size:14px;font-weight:650}.kb-nav-links a{position:relative;padding:8px 1px}.kb-nav-links .is-active{color:var(--blue)}.kb-nav-links .is-active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--blue)}.kb-download{justify-self:end;padding:11px 22px;border-radius:8px;background:var(--blue);color:#fff;font-weight:700;font-size:14px;box-shadow:0 9px 20px #2563eb38}.kb-hero{padding:105px 0 74px;background:linear-gradient(180deg,#fff,#f8fbff)}.kb-hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:84px;align-items:center}.kb-hero h1{margin:0;font-size:clamp(52px,5vw,76px);letter-spacing:-.075em;line-height:1.07}.kb-hero p{max-width:650px;color:var(--muted);font-size:18px;line-height:1.8}.kb-search{height:58px;max-width:630px;display:flex;align-items:center;gap:13px;margin-top:32px;padding:0 18px;border:1px solid #cfdbea;border-radius:10px;background:#fff;box-shadow:0 10px 30px #1737690d;color:var(--blue)}.kb-search input{width:100%;border:0;outline:0;color:var(--ink);font:inherit}.kb-featured{padding:8px 0 8px 44px;border-left:1px solid #cbd7e8}.kb-featured span{color:var(--blue);font-weight:750;font-size:14px}.kb-featured h2{margin:15px 0;font-size:29px;letter-spacing:-.05em;line-height:1.28}.kb-featured p{font-size:16px}.kb-featured a{display:inline-block;margin-top:10px;color:var(--blue);font-weight:730}.kb-featured b{margin-left:8px;font-size:20px}.kb-categories{border-bottom:1px solid var(--line)}.category-rail{display:grid;grid-template-columns:repeat(5,1fr)}.category{display:flex;gap:12px;align-items:center;padding:34px 18px;border-left:1px solid var(--line);background:#fff;text-align:left;cursor:pointer}.category.is-active{box-shadow:inset 0 -3px var(--blue)}.category-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:#edf4ff;color:var(--blue);font-weight:800}.category strong{font-size:14px}.kb-articles{padding:78px 0 112px}.section-title{display:flex;justify-content:space-between;align-items:end;margin-bottom:24px}.section-title h2{margin:0;font-size:34px;letter-spacing:-.055em}.section-title p{margin:8px 0 0;color:var(--muted)}.section-title span{color:var(--muted);font-size:14px}.article-list{border-top:1px solid var(--line)}.article-row{display:grid;grid-template-columns:1fr auto auto;gap:30px;align-items:center;padding:25px 0;border-bottom:1px solid var(--line)}.article-row h3{margin:0 0 7px;font-size:19px;letter-spacing:-.03em}.article-row p{margin:0;color:var(--muted);font-size:14px}.article-row time{color:#71839f;font-size:14px}.article-arrow{color:var(--blue);font-size:25px}.kb-footer{padding:26px 0;border-top:1px solid var(--line);color:#71839f;font-size:12px}.kb-footer .kb-container{display:flex;gap:26px}.kb-footer a:last-child{margin-left:auto}.admin-page{margin:0;min-width:1040px}.admin-header{height:72px;display:flex;align-items:center;gap:26px;padding:0 42px;border-bottom:1px solid var(--line)}.admin-name{padding-left:26px;border-left:1px solid var(--line);font-weight:750;font-size:18px}.admin-header>div{display:flex;align-items:center;gap:24px;margin-left:auto;font-size:14px;color:var(--blue);font-weight:700}.admin-header button,.new-article{border:0;border-radius:8px;background:var(--blue);color:#fff;font:inherit;font-weight:700;cursor:pointer}.admin-header button{padding:12px 20px}.admin-layout{display:grid;grid-template-columns:265px 1fr 345px;min-height:calc(100vh - 72px)}.admin-sidebar,.article-settings{padding:28px 24px;border-right:1px solid var(--line)}.article-settings{border-right:0;border-left:1px solid var(--line)}.admin-sidebar h2,.article-settings h2{font-size:15px;margin:20px 0 12px}.new-article{width:100%;padding:12px}.admin-sidebar button:not(.new-article){display:block;width:100%;padding:11px 12px;border:0;background:transparent;border-radius:7px;text-align:left;color:#26405f;font:inherit;cursor:pointer}.admin-sidebar .side-active{background:#edf4ff;color:var(--blue);font-weight:750}.admin-sidebar hr{border:0;border-top:1px solid var(--line);margin:24px 0}.category-item{padding:10px 12px;color:#26405f;font-size:14px}.editor-area{padding:34px 24px 24px}.title-input{width:100%;padding:16px;border:1px solid #cbd8e8;border-radius:8px;color:var(--ink);font:750 25px/1.25 inherit;letter-spacing:-.035em}.editor-tabs{display:flex;gap:28px;align-items:center;height:64px;border-bottom:1px solid var(--line)}.editor-tabs button{height:100%;border:0;border-bottom:2px solid transparent;background:transparent;color:#566b89;font:inherit;font-weight:700}.editor-tabs .is-active{color:var(--blue);border-color:var(--blue)}.editor-tabs span{margin-left:auto;color:#8191a8;font-size:13px}.editor-split{display:grid;grid-template-columns:1fr 1fr;min-height:calc(100vh - 238px);border:1px solid #d6e0ec}.editor-split textarea{resize:none;padding:28px;border:0;border-right:1px solid #d6e0ec;outline:0;font:15px/1.8 Cascadia Mono,Consolas,monospace;color:#19355e}.markdown-preview{padding:28px;color:#1a3055;line-height:1.8}.markdown-preview h1{font-size:30px;line-height:1.25}.markdown-preview h2{margin-top:28px;padding-bottom:10px;border-bottom:1px solid var(--line);font-size:22px}.markdown-preview code{padding:2px 5px;background:#edf4ff;color:var(--blue)}.article-settings label{display:grid;gap:8px;margin:20px 0;color:#26405f;font-size:14px;font-weight:700}.article-settings input,.article-settings select,.article-settings textarea{width:100%;border:1px solid #cbd8e8;border-radius:7px;padding:11px;color:#29405e;background:#fff;font:14px/1.5 inherit}.article-settings textarea{height:120px;resize:vertical}.save-draft{width:100%;margin-top:8px;padding:12px;border:1px solid var(--blue);border-radius:8px;color:var(--blue);background:#fff;font-weight:700;cursor:pointer}@media(max-width:800px){.kb-container{width:min(calc(100% - 32px),1290px)}.kb-nav{grid-template-columns:1fr auto}.kb-nav-links{display:none}.kb-hero{padding:76px 0 58px}.kb-hero-grid{grid-template-columns:1fr;gap:46px}.kb-hero h1{font-size:48px}.kb-featured{padding-left:24px}.category-rail{grid-template-columns:1fr}.category{border-left:0;border-top:1px solid var(--line)}.article-row{grid-template-columns:1fr auto}.article-row time{display:none}.kb-footer .kb-container{flex-wrap:wrap}.kb-footer a:last-child{margin-left:0}}button{font:inherit}.category{border:0;border-left:1px solid var(--line);color:var(--ink)}.category:first-child{border-left:0}.kb-showcase{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 252px;align-items:center;gap:46px;min-height:354px;isolation:isolate}.mascot-stage{position:relative;width:252px;height:318px;margin:0}.mascot-halo{position:absolute;top:41px;right:0;width:244px;height:244px;border-radius:50%;background:radial-gradient(circle at 40% 35%,#f7fbff 0,#e7f1ff 72%);z-index:-1}.knowledge-mascot{position:absolute;top:5px;right:-4px;width:268px;height:auto;filter:drop-shadow(0 20px 28px rgba(18,78,151,.13));mix-blend-mode:multiply;-webkit-mask-image:radial-gradient(ellipse 72% 65% at 51% 50%,#000 54%,transparent 86%);mask-image:radial-gradient(ellipse 72% 65% at 51% 50%,#000 54%,transparent 86%);animation:mascot-float 5.2s ease-in-out infinite;transform-origin:center bottom}.kb-showcase .kb-featured{position:relative;z-index:1;max-width:none;padding:24px 28px 24px 30px;border:1px solid #d8e4f2;border-left:3px solid #2563eb;border-radius:0 14px 14px 0;background:#ffffffb8;box-shadow:0 17px 38px #1e417712;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.kb-showcase .kb-featured h2{margin:13px 0;font-size:26px}.kb-showcase .kb-featured p{margin:0}.kb-showcase .kb-featured a{transition:color .2s ease,transform .2s ease}.kb-showcase .kb-featured a:hover{transform:translate(4px)}.knowledge-page .kb-header{animation:knowledge-header-in .42s ease both}.knowledge-page main{animation:knowledge-page-in .56s cubic-bezier(.2,.7,.2,1) both}.kb-hero-copy h1{max-width:640px}.kb-hero-copy h1 span,.kb-hero-copy h1 strong{display:block}.kb-hero-copy h1 strong{width:fit-content;color:#2563eb;letter-spacing:-.085em}.kb-hero-copy h1 strong:after{content:"";display:block;width:100%;height:8px;margin-top:-7px;border-radius:999px;background:#dceaff}.kb-hero-copy p{max-width:575px}.kb-nav-links a:after{content:"";position:absolute;right:0;bottom:2px;left:0;height:2px;border-radius:2px;background:#2563eb;transform:scaleX(0);transform-origin:left;transition:transform .24s ease}.kb-nav-links a:hover{color:#2563eb}.kb-nav-links a:hover:after,.kb-nav-links .is-active:after{transform:scaleX(1)}.kb-nav-links .is-active:after{bottom:2px}.category{position:relative;overflow:hidden;transition:color .22s ease,background .22s ease,box-shadow .22s ease}.kb-categories{border-bottom:0;background:#fff}.kb-categories .kb-container{padding-top:18px;padding-bottom:18px}.category-rail{grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid #dce5f0;border-radius:14px;overflow:hidden;box-shadow:0 12px 30px #193d710b}.category{min-height:88px;padding:24px 28px}.category.is-active{box-shadow:inset 0 -3px #2563eb}.category:before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(37,99,235,.06),transparent 54%);opacity:0;transition:opacity .22s ease}.category:hover{color:#1858cf;background:#fbfdff}.category:hover:before{opacity:1}.category-mark{position:relative;transition:transform .24s ease,background .24s ease}.category:hover .category-mark,.category.is-active .category-mark{transform:scale(1.08);background:#e4efff}.article-row{position:relative;transition:padding .24s ease,background .24s ease}.article-row:before{content:"";position:absolute;top:18px;bottom:18px;left:-15px;width:3px;border-radius:3px;background:#2563eb;opacity:0;transform:scaleY(.5);transition:opacity .22s ease,transform .22s ease}.article-row:hover,.article-row:focus-visible{padding-right:15px;padding-left:15px;background:#f8fbff;outline:0}.article-row:hover:before,.article-row:focus-visible:before{opacity:1;transform:scaleY(1)}.article-arrow{transition:transform .22s ease}.article-row:hover .article-arrow,.article-row:focus-visible .article-arrow{transform:translate(6px)}.kb-articles{padding-top:64px;background:linear-gradient(180deg,#fff,#fbfdff)}.section-title{align-items:center;gap:24px;margin-bottom:20px;padding:0 0 23px;border-bottom:1px solid #dce5f0}.section-kicker{display:block;margin-bottom:8px;color:#2563eb;font-size:12px;font-weight:750;letter-spacing:.12em}.section-title h2{font-size:37px;line-height:1.1}.section-title p{margin-top:9px}.article-toolbar{display:flex;align-items:center;gap:15px;flex-shrink:0}.article-toolbar #article-count{padding:7px 11px;border:1px solid #d9e6f7;border-radius:999px;background:#f4f8ff;color:#4f6690;font-size:13px}.article-toolbar button{border:0;background:transparent;color:#2563eb;font:inherit;font-size:14px;font-weight:750;cursor:pointer;transition:transform .2s ease}.article-toolbar button:hover{transform:translate(3px)}.article-toolbar button b{margin-left:4px;font-size:17px}.article-list{border-top:0}.article-row{grid-template-columns:46px minmax(0,1fr) auto auto;gap:20px;min-height:104px;padding:21px 12px 21px 0}.article-row:before{left:-1px}.article-row:hover,.article-row:focus-visible{padding-right:14px;padding-left:14px}.article-index{color:#9bb2d2;font-size:13px;font-weight:750;letter-spacing:.04em}.article-title-line{display:flex;align-items:center;gap:9px}.article-row h3{margin:0;color:#102752;font-size:19px}.article-row p{margin-top:7px}.article-pin{display:inline-flex;align-items:center;padding:3px 7px;border-radius:5px;background:#e9f1ff;color:#2563eb;font-size:11px;font-weight:750;line-height:1}.article-row time{min-width:92px;text-align:right}.articles-empty{padding:30px 0;color:#61738f}.article-settings .pin-setting{display:flex;align-items:center;gap:9px;margin:17px 0;cursor:pointer}.article-settings .pin-setting input{width:16px;height:16px;padding:0;accent-color:#2563eb}.article-reader{padding:0 0 92px;animation:reader-reveal .34s ease both}.reader-sheet{position:relative;max-width:870px;margin:0 auto;padding:48px 62px;border:1px solid #dce5f0;border-radius:18px;background:#fff;box-shadow:0 22px 60px #193e731a}.reader-sheet>p{margin:0 0 12px;color:#2563eb;font-size:14px;font-weight:750}.reader-sheet h2{max-width:720px;margin:0 0 28px;font-size:clamp(30px,4vw,44px);letter-spacing:-.055em;line-height:1.18}.reader-content{color:#2a4265;font-size:17px;line-height:1.9}.reader-content h1{display:none}.reader-content h2{margin:30px 0 12px;font-size:24px}.reader-content p{margin:0 0 14px}.reader-content li{margin:6px 0}.reader-content code{padding:2px 5px;border-radius:4px;background:#edf4ff;color:#1858cf}.reader-content .content-image{margin:26px 0}.reader-content .content-image img{display:block;max-width:100%;height:auto;border:1px solid #dce6f3;border-radius:10px}.reader-content .content-image figcaption{margin-top:8px;color:#7b8ca5;font-size:13px}.reader-close{position:absolute;top:20px;right:22px;display:grid;width:34px;height:34px;place-items:center;border:0;border-radius:50%;background:#edf4ff;color:#2563eb;font-size:25px;line-height:1;cursor:pointer;transition:transform .2s ease,background .2s ease}.reader-close:hover{background:#dceaff;transform:rotate(90deg)}@keyframes mascot-float{0%,to{transform:translateY(0) rotate(0)}50%{transform:translateY(-8px) rotate(-1.5deg)}}@keyframes knowledge-header-in{0%{opacity:0;transform:translateY(-7px)}to{opacity:1;transform:translateY(0)}}@keyframes knowledge-page-in{0%{opacity:0;transform:translateY(13px)}to{opacity:1;transform:translateY(0)}}@keyframes reader-reveal{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}@media(max-width:800px){.kb-showcase{grid-template-columns:1fr;min-height:0;gap:2px}.mascot-stage{order:-1;width:100%;height:245px}.knowledge-mascot{top:-42px;right:12px;width:258px}.mascot-halo{top:8px;right:4px;width:190px;height:190px}.kb-showcase .kb-featured{padding:20px 20px 20px 18px}.kb-showcase .kb-featured h2{font-size:23px}.kb-categories .kb-container{padding-top:12px;padding-bottom:12px}.category-rail{grid-template-columns:1fr;border-radius:10px}.category{min-height:66px;padding:16px 18px}.reader-sheet{padding:40px 25px}.section-title{align-items:flex-start;flex-direction:column}.article-row{grid-template-columns:32px minmax(0,1fr) auto;gap:12px}.article-row time{display:none}.article-title-line{align-items:flex-start;flex-direction:column;gap:6px}.article-toolbar{width:100%;justify-content:space-between}}@media(prefers-reduced-motion:reduce){.knowledge-mascot,.knowledge-page .kb-header,.knowledge-page main,.article-reader{animation:none}.category,.category-mark,.article-row,.article-arrow,.reader-close{transition:none}}[hidden]{display:none!important}.admin-login{min-height:100vh;display:grid;place-items:center;padding:28px;background:radial-gradient(circle at 72% 18%,#eaf3ff 0,transparent 28%),#f8fbff}.login-card{width:min(100%,430px);padding:42px;border:1px solid #dbe7f6;border-radius:22px;background:#fffffff0;box-shadow:0 24px 60px #0d33621f}.login-card .kb-brand{display:inline-flex;margin-bottom:38px}.login-card .kb-brand img{width:30px;height:30px;object-fit:contain}.login-kicker{margin:0 0 9px;color:#2563eb;font-size:13px;font-weight:700;letter-spacing:.08em}.login-card h1{margin:0 0 12px;color:#0b2045;font-size:29px}.login-card>p:not(.login-kicker){margin:0 0 26px;color:#60728f;line-height:1.75}.login-card label{display:grid;gap:9px;color:#1a3157;font-size:14px;font-weight:650}.login-card input{min-height:46px;padding:0 13px;border:1px solid #cbdcf1;border-radius:9px;color:#102650;font:inherit;outline:none}.login-card input:focus{border-color:#2563eb;box-shadow:0 0 0 4px #2563eb1a}.login-card button{width:100%;min-height:46px;margin-top:19px;border:0;border-radius:9px;background:#2563eb;color:#fff;font-weight:700;cursor:pointer;box-shadow:0 8px 18px #2563eb38}.login-card small{display:block;min-height:20px;margin-top:12px;color:#b42318;line-height:1.4}.admin-article-list{display:grid;gap:4px;margin:12px 0 18px}.admin-article-item{display:grid;gap:3px;width:100%;padding:9px 11px;border:0;border-radius:8px;color:#526783;background:transparent;text-align:left;cursor:pointer}.admin-article-item:hover,.admin-article-item.is-current{color:#1552c0;background:#edf4ff}.admin-article-item span{overflow:hidden;font-size:13px;font-weight:650;text-overflow:ellipsis;white-space:nowrap}.admin-article-item small{color:inherit;font-size:11px}.admin-empty{margin:10px 0;color:#7890ad;font-size:13px}@media(max-width:640px){.admin-login{padding:16px}.login-card{padding:30px 23px}}