:root{
  --bg:#f4f2ec; --paper:#fff; --ink:#1e2420; --muted:#5f6a62; --line:#dfe2d8;
  --brand:#3d6b4c; --brand-2:#a8743f; --ok:#2e7d4f; --warn:#b4541a; --radius:14px;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 "Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif}
a{color:var(--brand)}
.hidden{display:none!important}
.muted{color:var(--muted)}
.top{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 20px;background:var(--paper);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:baseline;gap:10px;text-decoration:none;color:var(--ink)}
.brand b{letter-spacing:.12em;color:var(--brand)}
.brand span{font-size:14px;color:var(--muted)}
nav{display:flex;align-items:center;gap:14px;font-size:14px}
#who{color:var(--muted);max-width:40vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
main{max-width:1180px;margin:0 auto;padding:24px 16px 60px;min-height:70vh}
.foot{text-align:center;color:var(--muted);font-size:13px;padding:24px}
.loading{padding:60px;text-align:center;color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:var(--paper);color:var(--ink);padding:10px 18px;border-radius:999px;font:inherit;cursor:pointer;text-decoration:none}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.gold{background:var(--brand-2);border-color:var(--brand-2);color:#fff}
.btn.small{padding:5px 12px;font-size:14px}
.btn:disabled{opacity:.5;cursor:default}
.link{background:none;border:0;color:var(--brand);cursor:pointer;font:inherit;padding:0;text-decoration:underline}
.link.big{font-size:17px;margin-top:14px;display:block}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.login{max-width:420px;margin:40px auto}
.login h1{margin:0 0 4px;font-size:24px}
label{display:block;margin:12px 0;font-size:14px;color:var(--muted)}
input,select,textarea{display:block;width:100%;margin-top:4px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font:inherit;color:var(--ink);background:#fff}
textarea{min-height:120px}
.login .btn{width:100%;margin-top:8px}
.msg{margin-top:14px;font-size:18px;font-weight:600;line-height:1.6}
.msg.ok{color:var(--ok)} .msg.err{color:#b3261e}
.help{font-size:14px;color:var(--muted);margin-top:18px}
h1.page{font-size:26px;margin:4px 0 4px}
.sub{color:var(--muted);margin:0 0 20px}
.crumb{font-size:14px;margin-bottom:8px}
.crumb a{text-decoration:none}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:18px}
.tile{display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:var(--ink);transition:transform .15s,box-shadow .15s}
.tile:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(60,40,20,.10)}
.tile .img{aspect-ratio:4/3;background:#efe9df center/cover no-repeat;display:grid}
.tile .mosaic{display:grid;grid-template-columns:repeat(3,1fr);aspect-ratio:4/3}
.tile .mosaic i{background:#efe9df center/cover no-repeat}
.tile .body{padding:12px 14px 14px}
.tile h3{margin:0 0 2px;font-size:18px}
.tile p{margin:0;font-size:14px;color:var(--muted)}
.badge{display:inline-block;font-size:12px;padding:2px 8px;border-radius:999px;background:#f1e7d6;color:#7a5b23;margin-top:8px}
.badge.red{background:#fde7e4;color:#a2321f}
.bar{height:6px;background:#eee7dc;border-radius:99px;overflow:hidden;margin-top:10px}
.bar i{display:block;height:100%;background:var(--ok)}
.prog-t{font-size:13px;color:var(--muted);margin-top:4px}
.gymcard{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin:0 0 22px;background:linear-gradient(120deg,#2f5a3e,#4f7d5c);color:#fff;border:0}
.gymcard h3{margin:0;font-size:20px}.gymcard p{margin:4px 0 0;opacity:.9}
.gymcard .btn{background:#fff;color:var(--brand);border-color:#fff;font-weight:700}
.section-t{font-size:15px;color:var(--muted);margin:26px 0 10px;letter-spacing:.05em}
/* 課程頁 */
.course-head{display:flex;gap:20px;align-items:center;flex-wrap:wrap;margin-bottom:18px}
.course-head img{width:150px;border-radius:10px;border:1px solid var(--line)}
.chap{margin-bottom:14px}
.chap h4{margin:0;padding:12px 16px;background:#efe9df;border-radius:10px 10px 0 0;font-size:16px}
.chap ul{list-style:none;margin:0;padding:0;border:1px solid var(--line);border-top:0;border-radius:0 0 10px 10px;background:var(--paper)}
.chap li a{display:flex;gap:10px;align-items:center;padding:11px 16px;border-top:1px solid var(--line);text-decoration:none;color:var(--ink)}
.chap li:first-child a{border-top:0}
.chap li a:hover{background:#faf7f2}
.chk{flex:0 0 22px;height:22px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;font-size:12px;color:#fff}
.chk.on{background:var(--ok);border-color:var(--ok)}
.kinds{margin-left:auto;font-size:13px;color:var(--muted);white-space:nowrap}
/* 單元頁 */
.lesson-wrap{display:grid;grid-template-columns:300px 1fr;gap:20px;align-items:start}
.side{position:sticky;top:70px;max-height:calc(100vh - 90px);overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:8px 0;font-size:14px}
.side h5{margin:10px 14px 4px;font-size:13px;color:var(--muted)}
.side a{display:flex;gap:8px;align-items:center;padding:7px 14px;text-decoration:none;color:var(--ink)}
.side a.cur{background:#f3ece0;font-weight:700}
.side .chk{flex-basis:18px;height:18px;font-size:10px}
.side-toggle{display:none}
.lesson h2{margin:0 0 16px;font-size:22px}
.blk{margin:0 0 22px}
.blk .bt{font-weight:700;margin-bottom:8px}
.video{position:relative;padding-top:56.25%;border-radius:12px;overflow:hidden;background:#000}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.text{white-space:pre-wrap;word-break:break-word;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.blk img{max-width:100%;border-radius:12px;border:1px solid var(--line)}
.filebox{display:flex;align-items:center;gap:12px;flex-wrap:wrap;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.filebox .nm{font-weight:600;flex:1 1 200px;word-break:break-all}
.pdfview{width:100%;height:78vh;border:1px solid var(--line);border-radius:12px;margin-top:10px;background:#fff}
audio{width:100%;margin-top:8px}
.embed{width:100%;height:75vh;border:1px solid var(--line);border-radius:12px;background:#fff}
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:28px;flex-wrap:wrap}
.empty{padding:40px;text-align:center;color:var(--muted)}
@media (max-width:860px){
  .lesson-wrap{grid-template-columns:1fr}
  .side{position:static;max-height:none;display:none}
  .side.open{display:block}
  .side-toggle{display:inline-flex;margin-bottom:12px}
  .pdfview{display:none}
  .brand span{display:none}
}
/* 後台 */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 18px}
.tabs button{border:1px solid var(--line);background:var(--paper);padding:8px 16px;border-radius:999px;cursor:pointer;font:inherit}
.tabs button.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.row>label{flex:1 1 180px;margin:6px 0}
.chkline{display:flex;gap:8px;align-items:center;color:var(--ink);font-size:15px;margin:8px 0}
.chkline input{width:auto;margin:0}
table{width:100%;border-collapse:collapse;background:var(--paper);font-size:14px}
th,td{border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{background:#efe9df;font-weight:600;position:sticky;top:0}
.tbl{overflow:auto;max-height:70vh;border:1px solid var(--line);border-radius:10px}
.ok-t{color:var(--ok)} .err-t{color:#b3261e}
.ed-chap{border:1px solid var(--line);border-radius:12px;background:var(--paper);margin:12px 0;padding:12px}
.ed-chap>.row input{font-weight:700}
.ed-les{border:1px dashed var(--line);border-radius:10px;padding:10px;margin:10px 0;background:#fcfaf6}
.ed-blk{display:flex;gap:8px;align-items:flex-start;border-top:1px solid var(--line);padding:8px 0}
.ed-blk .k{flex:0 0 74px;font-size:13px;color:var(--muted);padding-top:10px}
.ed-blk .v{flex:1}
.ed-blk textarea{min-height:80px}
.tools{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
.sticky-save{position:sticky;bottom:0;background:var(--bg);padding:12px 0;border-top:1px solid var(--line);display:flex;gap:10px;align-items:center;z-index:5}
/* 影片封面（點了才載入） */
.vposter{position:relative;padding-top:56.25%;border-radius:12px;background:#1d2a22;cursor:pointer;overflow:hidden}
.vposter .play{position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-size:20px;gap:6px;text-align:center}
.vposter .play b{display:grid;place-items:center;width:76px;height:76px;border-radius:50%;background:rgba(255,255,255,.18);font-size:30px;margin:0 auto 8px}
.covline{font-size:13px;color:var(--muted);margin-top:6px}
/* PDF 閱讀器 */
.pdfr{background:var(--paper);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.pdfr .tb{display:flex;gap:6px;align-items:center;flex-wrap:wrap;padding:8px 10px;border-bottom:1px solid var(--line);background:#f6f7f2}
.pdfr .tb .sp{flex:1}
.pdfr .pg{overflow:auto;max-height:80vh;background:#e9ebe4;text-align:center;padding:10px;touch-action:pan-x pan-y pinch-zoom}
.pdfr canvas{background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.12);max-width:none}
/* 測驗 */
.quiz .q{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:12px}
.quiz .q p{margin:0 0 8px;font-weight:600}
.quiz label{display:flex;gap:8px;align-items:flex-start;color:var(--ink);margin:6px 0;font-size:16px}
.quiz label input{width:auto;margin-top:5px}
.quiz .right{color:var(--ok);font-weight:700}.quiz .wrong{color:#b3261e}
.lockline{color:var(--muted);font-size:14px;padding:11px 16px;border-top:1px solid var(--line)}
.prog-big{font-size:34px;font-weight:800;color:var(--brand)}

/* S1G：章節內區塊小標題（有聲書／教學影片／PDF 電子書／MP3 音檔） */
.chap li.grp{list-style:none;font-weight:700;color:#8a6d1d;font-size:14px;padding:12px 16px 2px;border:0}
.side .grp{font-weight:700;color:#8a6d1d;font-size:13px;padding:8px 10px 2px}

/* S1M：護照版首頁、升級卡、課程最後的 AI 教練區塊 */
.passport{margin-bottom:28px}
.passport-banner{display:block;width:100%;height:auto;border-radius:16px;margin:6px 0 14px}
.passport-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.passport-head h2{margin:0;font-size:26px}
.upsell{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin:22px 0;border:2px dashed #c5a059;background:#fffaf0}
.upsell h3{margin:6px 0 4px}
.coach-block{margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.coach-locked{background:#fbf6ea;border:1px solid #e3cf9e}
.coach-locked h3{margin:0 0 4px}

/* S1Q：課程封面完整顯示（不裁切）、一行三本平均；手機一行兩本 */
.grid.books{grid-template-columns:repeat(3,minmax(0,1fr));max-width:960px}
.tile img.cover{display:block;width:100%;height:auto;aspect-ratio:1241/1755;object-fit:cover;object-position:center top;background:#efe9df}  /* S1Y：封面比例統一（A 系列書本 1241×1755），不同尺寸的圖也一樣高 */
@media(max-width:640px){.grid.books{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.grid.books .tile h3{font-size:16px}}

/* S1R：PDF 閱讀器工具列（頁碼輸入、縮放百分比、搜尋） */
.pdfr .pgnum{display:inline-flex;align-items:center;gap:4px;font-size:14px}
.pdfr .pgnum input{width:56px;padding:4px 6px;border:1px solid var(--line);border-radius:8px;text-align:center;font:inherit}
.pdfr select{padding:5px 8px;border:1px solid var(--line);border-radius:8px;background:#fff;font:inherit;font-size:14px}
.pdfr .srch{margin:0;background:#fff}
.pdfr .srch input[type=search]{flex:1 1 220px;min-width:0;padding:7px 10px;border:1px solid var(--line);border-radius:999px;font:inherit;font-size:14px}
.pdfr .srch .muted{font-size:13px}
.pdfr .pg{position:relative}
.pdfr canvas.pp{display:block;margin:0 auto 12px;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.12);max-width:none}
.pdfr .tb select{width:auto;flex:0 0 auto;margin:0}.pdfr .tb .btn{flex:0 0 auto;width:auto;margin:0}.pdfr .pgnum input{flex:0 0 auto;margin:0}
.pdfr .pbody{display:flex;align-items:stretch}
.pdfr .pbody .pg{flex:1;min-width:0}
.pdfr .pthumbs{flex:0 0 140px;max-height:80vh;overflow:auto;background:#dfe2da;padding:10px 8px;border-right:1px solid var(--line)}
.pdfr .pthumbs .th{display:block;width:100%;margin:0 0 10px;padding:4px;border:2px solid transparent;border-radius:6px;background:none;cursor:pointer;text-align:center}
.pdfr .pthumbs .th canvas{display:block;margin:0 auto;background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.15)}
.pdfr .pthumbs .th span{font-size:12px;color:var(--muted)}
.pdfr .pthumbs .th.on{border-color:var(--green,#3f6b4f);background:#fff}
@media(max-width:640px){.pdfr .pthumbs{flex-basis:96px}.pdfr .pthumbs .th canvas{width:72px!important;height:auto!important}}
.pdfr .zin{width:76px;flex:0 0 auto;margin:0;padding:5px 8px;border-radius:8px;text-align:center;font-size:14px}