/* ============================================================
   拾字 · 个人文学收藏 —— 样式与主题系统
   所有主题通过 <html> 上的 CSS 变量注入，便于用户自定义 / 上传
   ============================================================ */

/* ---------- 主题：默认（宣纸淡墨） ---------- */
:root{
  color-scheme: light;
  --bg:        #f7f5f0;
  --bg-soft:   #f1eee7;
  --surface:   #ffffff;
  --surface-2: #faf8f4;
  --border:    #e3ded3;
  --text:      #23201b;
  --text-2:    #5b5449;
  --text-3:    #93897c;
  --accent:    #9a3b2e;
  --accent-2:  #c2785e;
  --accent-ink:#ffffff;
  --shadow:    0 1px 2px rgba(35,32,27,.04), 0 8px 28px rgba(35,32,27,.07);
  --shadow-lg: 0 2px 6px rgba(35,32,27,.06), 0 24px 60px rgba(35,32,27,.14);
  --radius:    14px;
  --radius-sm: 9px;
  --font-serif: "Songti SC","Source Han Serif SC","Noto Serif SC",Georgia,"Times New Roman",serif;
  --font-sans:  "PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:  ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --deco:      url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.7' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 .55 0 0 0 0 .5 0 0 0 0 .44 0 0 0 .035 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
  --deco-size: 160px 160px;
  --deco-opacity: .9;
  --read-width: 43rem;
}

/* ---------- 主题：午夜书房（深色） ---------- */
html[data-theme="midnight"]{
  color-scheme: dark;
  --bg:#14161a; --bg-soft:#191c21; --surface:#1c1f25; --surface-2:#212530;
  --border:#2c313c; --text:#e9e6df; --text-2:#a9a49a; --text-3:#767165;
  --accent:#c9a25a; --accent-2:#8f7440; --accent-ink:#1a1509;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.36);
  --shadow-lg:0 2px 8px rgba(0,0,0,.4), 0 28px 70px rgba(0,0,0,.6);
  --deco:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 .95 0 0 0 0 .8 0 0 0 .035 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}
/* ---------- 主题：竹青 ---------- */
html[data-theme="bamboo"]{
  --bg:#f2f6f1; --bg-soft:#e9f0e7; --surface:#ffffff; --surface-2:#f6faf5;
  --border:#d8e3d5; --text:#1d2a20; --text-2:#4c5c50; --text-3:#7d8f81;
  --accent:#2f6b4f; --accent-2:#5c9a78; --accent-ink:#ffffff;
  --shadow:0 1px 2px rgba(29,42,32,.05), 0 8px 28px rgba(29,42,32,.08);
  --deco:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cg fill='none' stroke='%232f6b4f' stroke-width='1' stroke-opacity='.05'%3E%3Cpath d='M20 0v120M60 0v120M100 0v120M0 20h120M0 60h120M0 100h120'/%3E%3C/g%3E%3C/svg%3E");
}
/* ---------- 主题：樱灰 ---------- */
html[data-theme="sakura"]{
  --bg:#faf5f6; --bg-soft:#f4ebee; --surface:#ffffff; --surface-2:#fdf8f9;
  --border:#eddfe3; --text:#2b2126; --text-2:#5f4e56; --text-3:#9b8890;
  --accent:#b04a63; --accent-2:#d38a9c; --accent-ink:#ffffff;
  --shadow:0 1px 2px rgba(43,33,38,.04), 0 8px 28px rgba(176,74,99,.08);
  --deco:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cg fill='%23b04a63' fill-opacity='.045'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3Ccircle cx='90' cy='70' r='3'/%3E%3Ccircle cx='60' cy='105' r='3.5'/%3E%3Ccircle cx='105' cy='20' r='2.5'/%3E%3C/g%3E%3C/svg%3E");
}
/* ---------- 主题：海蓝夜 ---------- */
html[data-theme="ocean"]{
  --bg:#eef3f8; --bg-soft:#e5edf5; --surface:#ffffff; --surface-2:#f5f9fc;
  --border:#d7e2ec; --text:#16222e; --text-2:#44586b; --text-3:#7b8fa3;
  --accent:#1f5f8b; --accent-2:#4a8cbd; --accent-ink:#ffffff;
  --shadow:0 1px 2px rgba(22,34,46,.05), 0 10px 30px rgba(31,95,139,.1);
  --deco:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='60'%3E%3Cpath d='M0 40q30-26 60 0t60 0' fill='none' stroke='%231f5f8b' stroke-opacity='.07'/%3E%3C/svg%3E");
}
/* ---------- 主题：古籍黄（仿旧书） ---------- */
html[data-theme="scroll"]{
  --bg:#f6ecd6; --bg-soft:#f0e3c6; --surface:#fdf7e8; --surface-2:#f8efd9;
  --border:#e0cfa5; --text:#3a2c14; --text-2:#6b5630; --text-3:#9c8555;
  --accent:#8a5a20; --accent-2:#b98a45; --accent-ink:#fdf7e8;
  --shadow:0 1px 2px rgba(58,44,20,.08), 0 10px 30px rgba(58,44,20,.12);
  --deco:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='p'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.04 .9' numOctaves='4'/%3E%3CfeColorMatrix values='0 0 0 0 .45 0 0 0 0 .33 0 0 0 0 .12 0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23p)'/%3E%3C/svg%3E");
}

/* ---------- 基础 ---------- */
/* 关键：hidden 属性必须真正隐藏。否则 .modal-mask{display:grid} / .dropdown{display:flex}
   会覆盖 UA 的 [hidden]{display:none}，导致遮罩一直显示并拦截所有点击。 */
[hidden]{display:none !important}
*{box-sizing:border-box}
html,body{height:100%}
html{overflow-x:hidden}
body{
  margin:0; overflow-x:hidden; background:var(--bg); color:var(--text);
  font-family:var(--font-sans); font-size:15px; line-height:1.7;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  transition:background .35s ease, color .35s ease;
}
body::before{
  content:""; position:fixed; inset:0; pointer-events:none; z-index:0;
  background-image:var(--deco); background-size:var(--deco-size,auto);
  opacity:var(--deco-opacity,1); transition:background-image .35s ease;
}
/* 自定义背景图（覆盖在底纹之上、内容之下） */
body::after{
  content:""; position:fixed; inset:0; pointer-events:none; z-index:0;
  background-image:var(--bg-image,none);
  background-size:var(--bg-image-size,cover);
  background-position:center;
  background-repeat:var(--bg-image-repeat,no-repeat);
  opacity:var(--bg-image-opacity,.35);
  transition:background-image .35s ease, opacity .35s ease;
}
.view, .footer, .topbar{position:relative; z-index:1}
a{color:inherit; text-decoration:none}
button{font:inherit; color:inherit; cursor:pointer}
img{max-width:100%; display:block}
::selection{background:var(--accent); color:var(--accent-ink)}
.wrap{width:min(1120px,100% - 40px); margin-inline:auto}
.view{position:relative; z-index:1; min-height:calc(100vh - 190px); padding:34px 0 70px}
.footer{position:relative; z-index:1; border-top:1px solid var(--border); padding:20px 0; background:var(--bg-soft)}
.footer-inner{display:flex; justify-content:space-between; align-items:center; gap:14px; flex-wrap:wrap; font-size:12.5px; color:var(--text-3)}
.footer-left{display:flex; align-items:center; gap:9px}
.footer-right{display:flex; align-items:center; gap:8px}
.footer a:hover{color:var(--accent)}
.dot{opacity:.5}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky; top:0; z-index:40; background:color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter:saturate(1.6) blur(14px); -webkit-backdrop-filter:saturate(1.6) blur(14px);
  border-bottom:1px solid var(--border);
}
.topbar-inner{display:flex; align-items:center; gap:22px; height:62px}
.brand{display:flex; align-items:center; gap:11px; flex-shrink:0}
.brand-mark{
  width:34px; height:34px; border-radius:10px; display:grid; place-items:center;
  background:linear-gradient(150deg,var(--accent),var(--accent-2)); color:var(--accent-ink);
  font-family:var(--font-serif); font-size:19px; font-weight:700; box-shadow:var(--shadow);
}
.brand-mark.small{width:22px;height:22px;border-radius:7px;font-size:12px}
.brand-text{display:flex; flex-direction:column; line-height:1.15}
.brand-text b{font-family:var(--font-serif); font-size:17px; letter-spacing:.06em}
.brand-text i{font-style:normal; font-size:10.5px; color:var(--text-3); letter-spacing:.04em}
.nav{display:flex; gap:4px; margin-left:8px}
.nav-auth{display:none}
.nav-link{
  padding:7px 13px; border-radius:9px; font-size:14px; color:var(--text-2);
  transition:background .18s, color .18s;
}
.nav-link:hover{background:var(--surface); color:var(--text)}
.nav-link.active{background:var(--surface); color:var(--accent); font-weight:600; box-shadow:var(--shadow)}
.topbar-actions{margin-left:auto; display:flex; align-items:center; gap:9px}
.icon-btn{
  width:34px; height:34px; border-radius:9px; border:1px solid var(--border);
  background:var(--surface); display:grid; place-items:center; font-size:15px;
  transition:transform .18s, border-color .18s, color .18s;
}
.icon-btn:hover{transform:translateY(-1px); border-color:var(--accent); color:var(--accent)}
.nav-toggle{display:none}
.btn{
  border:1px solid transparent; border-radius:10px; padding:8px 16px; font-size:14px;
  transition:transform .18s, box-shadow .18s, background .18s, border-color .18s, color .18s;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent); color:var(--accent-ink); box-shadow:var(--shadow)}
.btn-primary:hover{box-shadow:var(--shadow-lg); filter:brightness(1.06)}
.btn-ghost{background:transparent; border-color:var(--border); color:var(--text-2)}
.btn-ghost:hover{border-color:var(--accent); color:var(--accent)}
.btn-soft{background:var(--surface-2); border-color:var(--border); color:var(--text-2)}
.btn-soft:hover{border-color:var(--accent); color:var(--accent)}
.btn-sm{padding:6px 12px; font-size:13px; border-radius:9px}
.btn-danger{color:#b03434; border-color:color-mix(in srgb,#b03434 35%, var(--border))}
.btn-danger:hover{background:color-mix(in srgb,#b03434 10%, transparent)}
.user-menu{position:relative}
.user-chip{
  display:flex; align-items:center; gap:8px; padding:5px 10px 5px 5px; border-radius:999px;
  border:1px solid var(--border); background:var(--surface);
}
.user-chip:hover{border-color:var(--accent)}
.avatar{
  width:26px; height:26px; border-radius:50%; display:grid; place-items:center; font-size:12.5px;
  background:linear-gradient(150deg,var(--accent),var(--accent-2)); color:var(--accent-ink); font-weight:600;
}
.user-name{font-size:13.5px; max-width:110px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap}
.caret{font-size:10px; color:var(--text-3)}
.dropdown{
  position:absolute; right:0; top:calc(100% + 8px); min-width:180px; padding:7px;
  background:var(--surface); border:1px solid var(--border); border-radius:12px;
  box-shadow:var(--shadow-lg); display:flex; flex-direction:column; gap:1px;
}
.dropdown a, .dropdown button{
  text-align:left; padding:9px 11px; border-radius:8px; font-size:13.5px; background:none; border:none;
  color:var(--text-2); width:100%;
}
.dropdown a:hover, .dropdown button:hover{background:var(--surface-2); color:var(--accent)}
.dropdown .sep{height:1px; background:var(--border); margin:5px 3px}

/* ---------- 通用元件 ---------- */
.card{background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); box-shadow:var(--shadow)}
.page-head{display:flex; align-items:flex-end; justify-content:space-between; gap:18px; margin-bottom:22px; flex-wrap:wrap}
.page-title{font-family:var(--font-serif); font-size:30px; margin:0; letter-spacing:.02em; font-weight:600}
.page-sub{color:var(--text-3); font-size:13px; margin-top:6px}
.eyebrow{font-size:11.5px; letter-spacing:.22em; text-transform:uppercase; color:var(--accent); font-weight:600}
.muted{color:var(--text-3)}
.divider{height:1px; background:var(--border); margin:26px 0}
.row{display:flex; gap:10px; align-items:center; flex-wrap:wrap}
.grow{flex:1}
.spacer{flex:1}

.input, .textarea, .select{
  width:100%; background:var(--surface); color:var(--text);
  border:1px solid var(--border); border-radius:10px; padding:11px 13px; font-size:14px;
  font-family:inherit; transition:border-color .18s, box-shadow .18s;
}
.input:focus, .textarea:focus, .select:focus{
  outline:none; border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(120,120,120,.18);
  box-shadow:0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent);
}
.textarea{resize:vertical; line-height:1.8}
.field{margin-bottom:14px}
.label{display:block; font-size:12.5px; color:var(--text-2); margin-bottom:6px; font-weight:600}
.hint{font-size:11.5px; color:var(--text-3); margin-top:5px}
.err{color:#b03434; font-size:12.5px; min-height:18px}

.chip{
  display:inline-flex; align-items:center; gap:5px; padding:4px 10px; border-radius:999px;
  background:var(--surface-2); border:1px solid var(--border); font-size:12px; color:var(--text-2);
}
.chip.accent{background:var(--surface-2); border-color:var(--accent); color:var(--accent);
  background:color-mix(in srgb,var(--accent) 12%, transparent); border-color:color-mix(in srgb,var(--accent) 30%, transparent)}
.chip button{background:none; border:none; padding:0; color:inherit; opacity:.6}
.chip button:hover{opacity:1}

.empty{text-align:center; padding:56px 20px; color:var(--text-3)}
.empty h3{font-family:var(--font-serif); color:var(--text-2); font-size:19px; margin:16px 0 6px}
.empty p{font-size:13.5px; margin:0 0 18px}

/* ---------- 首页 Hero ---------- */
.hero{display:grid; grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr); gap:34px; align-items:center; padding:22px 0 6px}
.hero-title{font-family:var(--font-serif); font-size:clamp(30px,4.6vw,50px); line-height:1.24; margin:14px 0 16px; letter-spacing:.02em}
.hero-title em{font-style:normal; color:var(--accent); position:relative}
.hero-title em::after{content:""; position:absolute; left:0; right:0; bottom:.06em; height:.32em; background:transparent; background:color-mix(in srgb,var(--accent) 16%, transparent); border-radius:2px; z-index:-1}
.hero-desc{color:var(--text-2); font-size:15.5px; max-width:34em}
.hero-actions{display:flex; gap:12px; margin-top:26px; flex-wrap:wrap}
.hero-art{position:relative; max-width:100%; overflow:hidden}
.hero-art svg{width:100%; height:auto; max-width:100%; display:block; filter:drop-shadow(0 18px 32px rgba(0,0,0,.10))}

/* 每日一句 */
.quote-hero{
  margin-top:44px; padding:30px 34px; border-radius:20px; position:relative; overflow:hidden;
  background:linear-gradient(140deg, var(--surface), var(--surface));
  background:linear-gradient(140deg, color-mix(in srgb,var(--accent) 9%, var(--surface)), var(--surface));
  border:1px solid var(--border); box-shadow:var(--shadow);
}
.quote-hero::before{
  content:"“"; position:absolute; left:14px; top:-34px; font-family:var(--font-serif);
  font-size:150px; color:color-mix(in srgb,var(--accent) 12%, transparent); line-height:1;
}
.quote-hero blockquote{
  position:relative; margin:0; font-family:var(--font-serif); font-size:clamp(17px,2.2vw,23px);
  line-height:1.85; letter-spacing:.03em; white-space:pre-wrap;
}
.quote-hero .who{margin-top:16px; font-size:13px; color:var(--text-3); display:flex; gap:10px; align-items:center; flex-wrap:wrap}
.quote-hero .who b{color:var(--accent); font-weight:600}

/* 统计 */
.stats{display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-top:26px}
.stat{padding:18px 20px; border-radius:var(--radius); background:var(--surface); border:1px solid var(--border)}
.stat b{display:block; font-family:var(--font-serif); font-size:27px; line-height:1.2}
.stat span{font-size:12px; color:var(--text-3)}

/* ---------- 作品网格 ---------- */
.grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(268px,1fr)); gap:18px}
.work{
  padding:20px 20px 16px; border-radius:var(--radius); background:var(--surface);
  border:1px solid var(--border); box-shadow:var(--shadow); cursor:pointer; position:relative;
  display:flex; flex-direction:column; gap:10px; transition:transform .2s, box-shadow .2s, border-color .2s;
}
.work:hover{transform:translateY(-3px); box-shadow:var(--shadow-lg); border-color:var(--accent)}
.work-top{display:flex; align-items:center; gap:8px; font-size:11.5px; color:var(--text-3)}
.work-cat{padding:2.5px 9px; border-radius:999px; background:var(--surface-2); color:var(--accent); font-weight:600;
  background:color-mix(in srgb,var(--accent) 11%, transparent)}
.work h3{font-family:var(--font-serif); font-size:18.5px; margin:0; line-height:1.4; letter-spacing:.02em}
.work-excerpt{
  font-size:13.4px; color:var(--text-2); line-height:1.85; flex:1;
  display:-webkit-box; -webkit-line-clamp:4; -webkit-box-orient:vertical; overflow:hidden; white-space:pre-wrap;
}
.work-meta{display:flex; align-items:center; gap:10px; font-size:11.5px; color:var(--text-3); border-top:1px solid var(--border); padding-top:11px}
.work-meta .spacer{flex:1}
.fav{color:var(--accent)}
.icon-mini{background:none; border:none; padding:2px 4px; border-radius:6px; font-size:13px; opacity:.55}
.icon-mini:hover{opacity:1; background:var(--surface-2)}

/* 工具条 */
.toolbar{display:flex; gap:10px; align-items:center; flex-wrap:wrap; margin-bottom:20px}
.search-box{position:relative; flex:1; min-width:210px}
.search-box .input{padding-left:34px}
.search-box::before{content:"⌕"; position:absolute; left:12px; top:50%; transform:translateY(-50%); color:var(--text-3); font-size:15px}
.seg{display:flex; background:var(--surface); border:1px solid var(--border); border-radius:10px; padding:3px; gap:2px}
.seg button{padding:6px 13px; border:none; background:none; border-radius:7px; font-size:13px; color:var(--text-2)}
.seg button.on{background:var(--accent); color:var(--accent-ink); font-weight:600}

/* ---------- 阅读器 ---------- */
.reader-wrap{max-width:var(--read-width); margin:0 auto}
.reader-head{text-align:center; margin-bottom:30px}
.reader-head h1{font-family:var(--font-serif); font-size:clamp(25px,3.6vw,36px); margin:8px 0 12px; line-height:1.3}
.reader-head .meta{color:var(--text-3); font-size:13px; display:flex; gap:12px; justify-content:center; flex-wrap:wrap}
.reader-body{
  font-family:var(--font-serif); font-size:var(--read-font,18px); line-height:var(--read-lh,2.05);
  letter-spacing:.02em; color:var(--text); white-space:pre-wrap; word-break:break-word;
}
.reader-body p{margin:0 0 1.15em}
.reader-toolbar{
  position:sticky; top:74px; z-index:20; display:flex; gap:8px; align-items:center; flex-wrap:wrap;
  padding:10px 14px; border-radius:12px; background:color-mix(in srgb,var(--bg) 88%, transparent);
  backdrop-filter:blur(12px); border:1px solid var(--border); margin-bottom:26px; box-shadow:var(--shadow);
}
.reader-toolbar .spacer{flex:1}
.back-link{display:inline-flex; align-items:center; gap:6px; font-size:13px; color:var(--text-3); margin-bottom:14px}
.back-link:hover{color:var(--accent)}

/* ---------- 编辑器 ---------- */
.editor-grid{display:grid; grid-template-columns:1fr 340px; gap:22px; align-items:start}
.editor-main{padding:24px}
.editor-side{display:flex; flex-direction:column; gap:16px; position:sticky; top:84px}
.panel{padding:18px 20px}
.panel h4{margin:0 0 13px; font-size:13px; letter-spacing:.06em; color:var(--text-2)}
.wordcount{font-size:11.5px; color:var(--text-3); text-align:right; margin-top:6px}
.drop{
  border:1.5px dashed var(--border); border-radius:12px; padding:18px; text-align:center;
  font-size:12.5px; color:var(--text-3); transition:border-color .2s, background .2s; cursor:pointer;
}
.drop:hover, .drop.over{border-color:var(--accent); background:color-mix(in srgb,var(--accent) 6%, transparent); color:var(--accent)}

/* ---------- 主题画廊 ---------- */
.theme-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(232px,1fr)); gap:18px}
.theme-card{border-radius:var(--radius); border:1px solid var(--border); background:var(--surface); overflow:hidden; box-shadow:var(--shadow); transition:transform .2s, box-shadow .2s}
.theme-card:hover{transform:translateY(-3px); box-shadow:var(--shadow-lg)}
.theme-card.on{border-color:var(--accent); box-shadow:0 0 0 2px color-mix(in srgb,var(--accent) 30%, transparent), var(--shadow)}
.theme-preview{height:118px; padding:14px; display:flex; flex-direction:column; justify-content:space-between; position:relative; overflow:hidden}
.theme-preview .tp-title{font-family:var(--font-serif); font-size:16px; line-height:1.3}
.theme-preview .tp-line{font-size:10.5px; opacity:.72}
.theme-preview .tp-chips{display:flex; gap:5px}
.theme-preview .tp-dot{width:15px; height:15px; border-radius:50%; box-shadow:inset 0 0 0 1px rgba(0,0,0,.12)}
.theme-info{padding:13px 15px; display:flex; align-items:center; justify-content:space-between; gap:10px}
.theme-info b{font-size:14px; display:block}
.theme-info span{font-size:11px; color:var(--text-3)}
.swatch-row{display:flex; gap:8px; flex-wrap:wrap}
.swatch{width:34px; height:34px; border-radius:9px; border:1px solid var(--border); position:relative; overflow:hidden}
.swatch input{position:absolute; inset:-6px; width:200%; height:200%; border:none; background:none; padding:0; cursor:pointer}
.pattern-row{display:grid; grid-template-columns:repeat(auto-fill,minmax(64px,1fr)); gap:9px}
.pattern{
  height:52px; border-radius:10px; border:1px solid var(--border); cursor:pointer; position:relative;
  background-color:var(--surface-2); background-size:cover; transition:border-color .18s, transform .18s;
}
.pattern:hover{transform:translateY(-2px)}
.pattern.on{border-color:var(--accent); box-shadow:0 0 0 2px color-mix(in srgb,var(--accent) 26%, transparent)}
.pattern span{position:absolute; left:0; right:0; bottom:3px; font-size:9.5px; text-align:center; color:var(--text-3)}

/* ---------- 弹窗 ---------- */
.modal-mask{
  position:fixed; inset:0; z-index:80; display:grid; place-items:center; padding:22px;
  background:color-mix(in srgb,#000 42%, transparent); backdrop-filter:blur(3px);
  animation:fade .18s ease;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal-mask:not(.open){display:none !important}
@keyframes rise{from{opacity:0; transform:translateY(14px) scale(.985)}to{opacity:1; transform:none}}
.modal{
  width:min(460px,100%); max-height:88vh; overflow:auto; background:var(--surface);
  border:1px solid var(--border); border-radius:18px; box-shadow:var(--shadow-lg);
  padding:28px 30px; animation:rise .22s cubic-bezier(.2,.8,.3,1);
}
.modal.wide{width:min(620px,100%)}
.modal h2{font-family:var(--font-serif); font-size:22px; margin:0 0 6px}
.modal .sub{color:var(--text-3); font-size:13px; margin-bottom:20px}
.modal-close{position:absolute; top:14px; right:16px; width:30px; height:30px; border:none; background:none; font-size:18px; color:var(--text-3); border-radius:8px}
.modal-close:hover{background:var(--surface-2); color:var(--text)}
.modal-foot{display:flex; gap:10px; justify-content:flex-end; margin-top:20px}

/* ---------- 提示 ---------- */
.toasts{position:fixed; right:22px; bottom:22px; z-index:99; display:flex; flex-direction:column; gap:10px; align-items:flex-end}
.toast{
  padding:11px 16px; border-radius:11px; background:var(--surface); border:1px solid var(--border);
  box-shadow:var(--shadow-lg); font-size:13.5px; max-width:330px; animation:rise .2s ease;
  border-left:3px solid var(--accent);
}
.toast.ok{border-left-color:#2f8f5b}
.toast.err{border-left-color:#b03434}

/* ---------- 响应式 ---------- */
@media (max-width: 940px){
  .hero{grid-template-columns:1fr; gap:22px}
  .hero-art{order:-1; max-width:400px; margin:0 auto}
  .editor-grid{grid-template-columns:1fr}
  .editor-side{position:static}
  .stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width: 720px){
  .modal-mask{padding:14px; align-items:end}
  .modal{border-radius:16px; max-height:86vh}
  .modal h2{font-size:19px}
  .wrap{width:min(1120px,100% - 26px)}
  .nav{
    position:fixed; inset:62px 0 auto 0; flex-direction:column; gap:2px; padding:12px;
    background:var(--surface); border-bottom:1px solid var(--border);
    transform:translateY(-130%); transition:transform .26s cubic-bezier(.2,.8,.3,1); margin:0;
    box-shadow:var(--shadow);
  }
  .nav.open{transform:none}
  .nav-toggle{display:grid}
  .nav-link{padding:11px 14px}
  .nav-auth{display:flex; gap:9px; padding:10px 6px 4px; border-top:1px solid var(--border); margin-top:6px}
  .nav-auth .btn{flex:1}
  #btnLogin, #btnRegister{display:none}
  .view{padding:22px 0 56px}
  .page-title{font-size:24px}
  .modal{padding:22px 20px}
  .quote-hero{padding:24px 22px}
  .stats{grid-template-columns:1fr 1fr; gap:10px}
  .stat{padding:14px}
  .stat b{font-size:22px}
}
@media print{
  .topbar,.footer,.reader-toolbar,.toasts{display:none}
  body{background:#fff}
}

/* ---------- 插画（用 class 而不是 SVG 属性里的 var()，兼容老安卓浏览器） ---------- */
.hero-art .a-card, .empty .a-card{fill:var(--surface)}
.a-card{fill:var(--surface)}
.a-border{stroke:var(--border)}
.a-accent{fill:var(--accent)}
.a-accent2{fill:var(--accent-2)}
.a-accent-s{stroke:var(--accent); fill:none}
.a-text3{stroke:var(--text-3)}
.a-ink{fill:var(--accent-ink)}
.a-ink-s{stroke:var(--accent-ink); fill:none}
.a-grad{fill:var(--accent)}

/* ---------- 创始人署名 ---------- */
.hero-founder{margin-top:18px}
.founder-chip{display:inline-flex; align-items:center; gap:10px; padding:7px 14px 7px 7px;
  border:1px solid var(--border); border-radius:999px; background:var(--surface); box-shadow:var(--shadow)}
.founder-avatar{width:30px; height:30px; border-radius:50%; display:grid; place-items:center;
  background:linear-gradient(150deg,var(--accent),var(--accent-2)); color:var(--accent-ink);
  font-family:var(--font-serif); font-size:14px; font-weight:700}
.founder-avatar.lg{width:64px; height:64px; font-size:27px; flex:0 0 64px}
.founder-meta{display:flex; flex-direction:column; line-height:1.25; text-align:left}
.founder-meta b{font-size:13.5px}
.founder-meta i{font-style:normal; font-size:11px; color:var(--text-3)}
.founder-line{font-size:12.5px; color:var(--text-3)}
.founder-line b{color:var(--accent)}

.founder-card{display:flex; gap:18px; align-items:flex-start; margin-bottom:18px}
.founder-body h3{font-family:var(--font-serif); font-size:21px; margin:4px 0 2px}
.founder-title{font-size:12.5px; color:var(--accent); font-weight:600}
.founder-bio{margin:10px 0 0; font-size:13.5px; color:var(--text-2); line-height:1.9}
@media (max-width:560px){
  .founder-card{flex-direction:column; gap:12px}
}

/* ---------- 公告条 ---------- */
.ann-bar{background:linear-gradient(90deg,var(--accent),var(--accent-2)); color:var(--accent-ink);
  font-size:13px; padding:9px 0; position:relative; z-index:2}
.ann-bar .wrap{display:flex; gap:8px; align-items:center}

/* ---------- 管理台 ---------- */
.ad-works{max-height:340px; overflow:auto; border:1px solid var(--border); border-radius:10px; padding:6px}
.ad-work{display:flex; gap:10px; align-items:center; padding:8px 10px; border-radius:8px; font-size:13px; cursor:pointer}
.ad-work:hover{background:var(--surface-2)}
.ad-work input{width:16px; height:16px; flex:0 0 16px}
.ad-work b{font-weight:600}
.ad-work i{font-style:normal; color:var(--text-3); font-size:12px}

/* ---------- 公共文库 ---------- */
.cls-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(276px,1fr)); gap:16px}
.cls-card{padding:18px 18px 14px; border-radius:var(--radius); background:var(--surface);
  border:1px solid var(--border); box-shadow:var(--shadow); display:flex; flex-direction:column; gap:8px}
.cls-top{display:flex; align-items:center; gap:8px; font-size:11.5px; color:var(--text-3)}
.cls-card h3{font-family:var(--font-serif); font-size:17.5px; margin:0; letter-spacing:.02em}
.cls-author{font-size:12.5px; color:var(--accent); font-weight:600}
.cls-body{font-size:13px; color:var(--text-2); line-height:1.85; white-space:pre-wrap;
  display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden}
.cls-note{font-size:11.5px; color:var(--text-3); line-height:1.7; border-left:2px solid var(--border); padding-left:8px}
.cls-foot{display:flex; gap:8px; align-items:center; margin-top:auto; padding-top:10px; border-top:1px solid var(--border)}

/* ---------- 互动：朗读 / 默写 / 批注 / 打卡 ---------- */
.progress-line{height:6px;border-radius:3px;background:var(--surface-2);overflow:hidden;border:1px solid var(--border)}
.progress-line>div{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .3s}
.quiz-prompt{font-family:var(--font-serif);font-size:19px;line-height:2.1;white-space:pre-wrap;
  padding:18px;border-radius:12px;background:var(--surface-2);border:1px solid var(--border);letter-spacing:.02em}
.quiz-score{font-family:var(--font-serif);font-size:44px;line-height:1.2;color:var(--accent)}
.quiz-wrong{padding:12px 14px;border-radius:10px;background:var(--surface-2);border-left:3px solid #b03434;margin-bottom:10px}
.quote-mini{font-family:var(--font-serif);font-size:16px;line-height:2;margin:0 0 12px;white-space:pre-wrap}
.note-row{padding:12px 0;border-bottom:1px solid var(--border)}
.note-row:last-child{border-bottom:none}
.note-quote{font-family:var(--font-serif);font-size:14px;color:var(--accent);line-height:1.8}
.note-body{font-size:13.5px;color:var(--text-2);line-height:1.9;margin-top:4px}
.note-meta{font-size:11.5px;color:var(--text-3);margin-top:6px;display:flex;gap:10px;align-items:center}
mark.hl{background:color-mix(in srgb, var(--accent) 22%, transparent); background:rgba(200,180,120,.35);
  color:inherit; border-radius:3px; padding:0 2px}
.note-bar{position:fixed; left:50%; transform:translateX(-50%); bottom:22px; z-index:70;
  width:min(560px, calc(100% - 32px)); padding:14px 16px; border-radius:14px;
  background:var(--surface); border:1px solid var(--border); box-shadow:var(--shadow-lg)}
.note-bar-quote{font-family:var(--font-serif); font-size:13px; color:var(--accent); margin-bottom:8px; line-height:1.7}
.heat{display:flex; gap:4px; margin-top:8px; flex-wrap:wrap}
.heat-cell{width:14px; height:14px; border-radius:4px; background:var(--surface-2); border:1px solid var(--border)}
.heat-cell.on{background:var(--accent); border-color:var(--accent)}

/* ---------- 留言 / 点赞 ---------- */
.cm-row, .wall-row{padding:11px 0; border-bottom:1px solid var(--border)}
.cm-row:last-child, .wall-row:last-child{border-bottom:none}
.cm-head{display:flex; align-items:center; gap:10px; font-size:12.5px; color:var(--text-3)}
.cm-head b{color:var(--text); font-size:13px}
.cm-body{font-size:13.5px; color:var(--text-2); line-height:1.9; margin-top:4px; white-space:pre-wrap}
.live-tag{font-size:11.5px}
