:root{--blue:#2563eb;--ink:#1f2937;--muted:#6b7280;--line:#e5e7eb;--bg:#f6f7fb;--card:#fff;--ipa-us:#2f5fd0;--ipa-uk:#8a8f98;--zh:#4b5563;--fall:#2563eb;--rise:#e11d48;--level:#9ca3af;--fr:#7c3aed;--rf:#d97706}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif}
[hidden]{display:none!important}
a{color:var(--blue);text-decoration:none;cursor:pointer}
.muted{color:var(--muted)}
.err{color:#dc2626;min-height:1.2em}
button{font:inherit;cursor:pointer}

/* 登录 */
#login{min-height:100vh;display:flex;align-items:center;justify-content:center}
.login-card{background:#fff;padding:32px 28px;border-radius:16px;box-shadow:0 6px 30px rgba(0,0,0,.08);width:min(360px,92vw);text-align:center}
.login-card h1{margin:0 0 4px;font-size:22px}
.login-card form{display:flex;gap:8px;margin-top:16px}
.login-card input{flex:1;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:16px}
.login-card button{padding:10px 18px;border:0;border-radius:10px;background:var(--blue);color:#fff}

/* 顶栏 */
#top{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;padding:10px 18px}
.brand{font-weight:700;color:var(--ink);white-space:nowrap}
.urlbar{flex:1;display:flex;gap:8px;max-width:900px}
.urlbar input{flex:1;min-width:0;padding:9px 12px;border:1px solid var(--line);border-radius:10px;font-size:15px;background:#fafbff}
.urlbar input:focus{outline:2px solid #bfd3ff;border-color:var(--blue)}
.urlbar button{padding:9px 20px;border:0;border-radius:10px;background:var(--blue);color:#fff;font-weight:600}

/* 首页 */
#home{max-width:880px;margin:0 auto;padding:28px 18px 60px}
.hero h1{font-size:26px;margin:10px 0 8px}
.opts{display:flex;flex-wrap:wrap;gap:18px;margin:16px 0 8px;align-items:center}
.opts select{padding:5px 8px;border-radius:8px;border:1px solid var(--line);font:inherit}
.chk{display:flex;align-items:center;gap:6px}
.examples{color:var(--muted);font-size:14px}
.examples a{margin-left:10px}
.hist h2{font-size:17px;margin:34px 0 10px}
#histList{list-style:none;margin:0;padding:0}
#histList li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 14px;margin-bottom:8px;display:flex;gap:10px;align-items:center}
#histList .ht{flex:1;min-width:0}
#histList .ht a{font-weight:600;color:var(--ink);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#histList .hu{font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#histList .hd{font-size:12px;color:var(--muted);white-space:nowrap}
#histList .del{border:0;background:none;color:#9ca3af;font-size:18px}
.empty{color:var(--muted)}

/* 等待 */
#busy{min-height:60vh;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--muted)}
.spinner{width:36px;height:36px;border:3px solid #dbe4ff;border-top-color:var(--blue);border-radius:50%;animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* 阅读页：工具栏 + 原网页框 */
body.reading{height:100vh;height:100dvh;display:flex;flex-direction:column;overflow:hidden}
body.reading #top{position:static;flex:none}
#reader{flex:1;min-height:0;display:flex;flex-direction:column}
.bar{flex:none;background:#f6f7fb;display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center;padding:7px 14px;border-bottom:1px solid var(--line)}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:9px;overflow:hidden;background:#fff}
.seg button{border:0;background:none;padding:4px 10px;font-size:13px;color:var(--muted)}
.seg button.on{background:var(--blue);color:#fff}
.tg{font-size:13px;display:flex;align-items:center;gap:4px;color:var(--zh)}
.prog{font-size:13px;color:var(--muted);margin-left:auto}
.prog .retry{margin-left:6px}
.links{font-size:13px;white-space:nowrap}
.links a{margin-left:8px}
#frame{flex:1;width:100%;border:0;background:#fff;min-height:0}
.slink{margin-top:12px;font-size:13px;color:var(--muted)}
/* 查词弹层 */
#sheet{position:fixed;inset:0;z-index:50}
.sheet-bg{position:absolute;inset:0;background:rgba(0,0,0,.25)}
.sheet-card{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(440px,92vw);max-height:80vh;overflow:auto;background:#fff;border-radius:16px;padding:18px 20px;box-shadow:0 10px 40px rgba(0,0,0,.18)}
.sheet-card .x{position:absolute;right:10px;top:6px;border:0;background:none;font-size:24px;color:#9ca3af}
.sw{font-size:24px;font-weight:700}
.sipa{margin:4px 0;font-size:14px}
.sipa span{margin-right:14px}
.sipa button{border:1px solid var(--line);background:#fff;border-radius:7px;font-size:12px;padding:1px 7px;margin-left:4px;color:var(--blue)}
.sctx{background:#f0f5ff;border-radius:10px;padding:8px 10px;margin:10px 0;font-size:14px}
.sctx b{color:var(--blue)}
.sdefs{margin:6px 0 0;padding-left:18px;font-size:14px;color:#374151}
.slemma{font-size:13px;color:var(--muted)}

@media (max-width:760px){
  #top{position:static;flex-wrap:wrap;padding:8px 10px;gap:6px}
  .brand{display:none}
  .urlbar{flex-basis:100%}
  .urlbar input,.urlbar button{padding:7px 10px;font-size:14px}
  .seg button{padding:3px 7px;font-size:12px}
  .tg,.prog,.links{font-size:12px}
  .links a{margin-left:0;margin-right:8px}
  .bar{gap:5px 10px;padding:6px 8px}
  .prog{margin-left:0;flex-basis:100%}
  .sheet-card{top:auto;bottom:0;left:0;transform:none;width:100%;border-radius:16px 16px 0 0;max-height:70vh}
}