:root{color-scheme:light;--paper:#f8f5ec;--ink:#242820;--muted:#62665b;--line:#dad8ca;--green:#2f5342;--card:#fffdf6}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 system-ui,sans-serif}
.top{border-bottom:1px solid var(--line);background:var(--paper)}
.top-inner,main{max-width:1100px;margin:auto;padding:0 28px}
.top-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px;flex-wrap:wrap}
main{padding-top:44px;padding-bottom:70px}
button,input,textarea{font:inherit}
button{cursor:pointer;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:8px;padding:6px 12px}
button:hover{border-color:var(--green)}
button:disabled{opacity:.55;cursor:wait}
nav{display:flex;gap:6px;flex-wrap:wrap}
nav button,.brand{border-color:transparent;background:transparent}
nav button[aria-current=true]{background:#e6ebe1;color:var(--green)}
.brand{padding-left:0;font-weight:750;font-size:22px}
.brand span{font:italic 23px Georgia,serif;color:var(--green)}
.primary{background:var(--green);color:white;border-color:var(--green)}
h1,h2,h3,p{margin:0 0 12px}
h1{font-size:clamp(30px,5vw,52px);line-height:1.15;letter-spacing:-.035em}
h2{font-size:23px}
.eyebrow{font-size:13px;letter-spacing:.12em;color:var(--green);font-weight:700}
.subtle{color:var(--muted)}
#manual{display:grid;gap:9px;margin-top:22px}
input,textarea{border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink);padding:8px 12px;width:100%}
textarea{min-height:92px}
.notice{padding:10px 14px;background:#e6ebe1;border:1px solid #c8d4c7;border-radius:8px;margin-bottom:18px}
.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:24px}
.shelf{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(285px,100%),1fr));gap:16px}
.card,.note{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}
.card{display:flex;align-items:flex-start;gap:18px}
.card .cover{width:72px;aspect-ratio:2/3;object-fit:cover;border-radius:4px;background:#dee6db}
.card h2{line-height:1.25}
.reader-layout{display:grid;grid-template-columns:minmax(165px,205px) minmax(0,700px);gap:35px;align-items:start}
.toc{display:grid;gap:6px;border-right:1px solid var(--line);padding-right:14px;max-height:75vh;overflow:auto;position:sticky;top:20px}
.toc button{text-align:left;font-size:14px}
.reading h1{font-size:clamp(27px,4vw,42px)}
.reading h2{font-family:Georgia,serif}
.reader-tools{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0;position:sticky;top:0;background:var(--paper);padding:8px 0;z-index:1}
.block{scroll-margin-top:78px;margin:0 0 20px}
.block-text{font:clamp(19px,2.6vw,24px)/1.8 Georgia,serif;white-space:pre-wrap}
.block:focus,.block.highlight{outline:2px solid #9cae9f;outline-offset:7px;border-radius:4px}
.block img{max-width:100%;max-height:65vh;object-fit:contain}
.block .bookmark{font-size:12px;padding:2px 8px;margin-top:4px;color:var(--muted)}
.chapter-nav{display:flex;justify-content:space-between;margin-top:22px;gap:10px}
.note{margin-bottom:12px}
.note blockquote,dialog blockquote{margin:10px 0;padding:5px 12px;border-left:3px solid #9fb2a0;font:19px/1.55 Georgia,serif;white-space:pre-wrap}
dialog{width:min(590px,94vw);border:1px solid var(--line);border-radius:13px;background:var(--card);color:var(--ink);padding:22px}
dialog::backdrop{background:#24282070}
.dialog-head{display:flex;justify-content:space-between;gap:12px}
@media(max-width:650px){.top-inner,main{padding-left:16px;padding-right:16px}.top-inner{padding-block:10px}main{padding-top:26px}.reader-layout{display:block}.toc{position:static;display:flex;overflow:auto;border:0;padding:0 0 14px}.toc button{flex:0 0 auto;max-width:55vw}.reader-tools{top:0}}
.login-code{display:block;letter-spacing:.24em;font:700 28px/1.4 monospace;margin:8px 0}
.account-card{display:block;margin-bottom:16px;max-width:620px}
.account-card form{display:grid;gap:10px;margin:12px 0}


.login{
  position:relative;max-width:468px;margin:12px auto 0;padding:36px 40px 30px;
  overflow:hidden;background:var(--card);border:1px solid var(--line);border-radius:18px;
  box-shadow:0 12px 32px #24282009
}
.login h1{font-size:clamp(24px,5vw,30px);letter-spacing:-.035em;margin-bottom:22px}
.login .eyebrow{margin-bottom:7px}
.login-bookmark{
  position:absolute;right:0;top:0;width:76px;height:76px;background:#e6ebe1;color:var(--green);
  clip-path:polygon(0 0,100% 0,100% 100%);display:flex;justify-content:flex-end;align-items:flex-start;
  padding:12px
}
.login-tabs{display:flex;gap:28px;border-bottom:1px solid var(--line);margin-bottom:22px}
.login-tab{
  border:0;border-bottom:2px solid transparent;border-radius:0;background:transparent;
  padding:0 0 9px;color:var(--muted);font-weight:600
}
.login-tab[aria-selected=true]{border-bottom-color:var(--green);color:var(--green)}
.login-tab:focus-visible,.login-link:focus-visible{outline:2px solid var(--green);outline-offset:3px}
.login-submit{width:100%;min-height:46px;border-radius:999px;font-weight:700}
.login-submit:disabled{cursor:not-allowed}
.wechat-intro{text-align:center;padding:4px 6px 15px}
.wechat-intro h2{font-size:18px;margin:10px 0 5px}
.wechat-intro p{font-size:14px;line-height:1.65;margin:0 auto;max-width:300px}
.wechat-icon{
  width:56px;height:56px;display:inline-grid;place-items:center;border:1px solid var(--line);
  border-radius:16px;background:#e6ebe1;color:var(--green)
}
.wechat-request{border:1px solid var(--line);border-radius:12px;text-align:center;padding:14px;background:var(--paper)}
.wechat-request p{font-size:14px;margin:0 0 8px}
.login-hint,.login-footer{font-size:13px;color:var(--muted);line-height:1.55;text-align:center}
.login-hint{margin:12px 0 0}
.login-footer{border-top:1px solid var(--line);margin:22px 0 0;padding-top:14px}
.login form{display:grid;gap:8px}
.login form label{font-size:14px;font-weight:600}
.login form input{min-height:44px}
.login form input:focus{outline:2px solid #9cae9f;outline-offset:1px}
.login-link{border:0;background:transparent;padding:2px 0;color:var(--green);font-size:14px;text-decoration:underline;text-underline-offset:3px}
.password-input{position:relative}
.password-input input{padding-right:62px}
.password-input button{position:absolute;top:50%;right:12px;transform:translateY(-50%)}
.forgot-password{justify-self:end;margin:3px 0 8px}
.reset-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.reset-head h2{font-size:18px;margin:0}
.reset-panel form + form{margin-top:14px}
.login-notice{font-size:14px}
@media(max-width:520px){.login{margin-top:0;padding:28px 22px 22px}.login-bookmark{width:62px;height:62px;padding:9px}}