/* 英點都不難 樣式：深空藍＋電光藍紫漸層＋琥珀成就色；手機優先。 */
:root{
  --navy:#0b1226; --navy2:#111a36; --ink:#182238; --sub:#5c688c;
  --paper:#f6f7fb; --card:#fff; --line:#e4e8f2;
  --cyan:#22d3ee; --violet:#6366f1; --amber:#ffb020;
  --grad:linear-gradient(92deg,#22d3ee,#6366f1);
  --ok:#0e9f6e; --bad:#e05252; --r:18px;
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
body{font-family:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;color:var(--ink);background:var(--paper);line-height:1.65;-webkit-font-smoothing:antialiased;overscroll-behavior-y:none}
button,a{touch-action:manipulation}
img{display:block}
a{color:var(--violet)}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.hidden{display:none!important}

/* 頁首 */
header.site{position:sticky;top:0;z-index:50;background:rgba(11,18,38,.94);backdrop-filter:blur(12px)}
.hbar{display:flex;align-items:center;gap:16px;min-height:62px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff}
.brand img{width:36px;height:36px}
.brand b{font-size:19px;letter-spacing:1px;white-space:nowrap}
nav.main{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
nav.main::-webkit-scrollbar{display:none}
nav.main a{color:#c6d2f2;text-decoration:none;font-weight:600;padding:8px 12px;border-radius:10px;white-space:nowrap}
nav.main a:hover{background:rgba(255,255,255,.09);color:#fff}
.hactions{margin-left:auto;display:flex;align-items:center;gap:12px}
.hactions a{color:#eef2ff;text-decoration:none;font-weight:700;white-space:nowrap}
.nav-cta{background:var(--grad);padding:9px 18px;border-radius:999px}
.streak-chip{color:#ffd88a;background:rgba(255,176,32,.13);border:1px solid rgba(255,176,32,.4);font-size:13px;font-weight:700;border-radius:999px;padding:5px 12px;white-space:nowrap}

/* 按鈕與通用 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;cursor:pointer;font:inherit;font-weight:700;border-radius:999px;padding:12px 24px;font-size:15.5px;text-decoration:none;white-space:nowrap;transition:transform .12s}
.btn:active{transform:scale(.97)}
.btn.grad{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(80,110,240,.35)}
.btn.ghost{background:rgba(255,255,255,.08);color:#eef2ff;border:1px solid rgba(255,255,255,.22)}
.btn.light{background:#eef1fb;color:var(--navy)}
.btn.big{width:100%}
.btn[disabled]{opacity:.45;cursor:default;box-shadow:none}
.ptitle{font-size:clamp(26px,4.5vw,36px);font-weight:900;margin:34px 0 6px;letter-spacing:.5px}
.psub{color:var(--sub);max-width:640px}
.stitle{font-size:19px;font-weight:900;margin-bottom:10px}
.note{color:var(--sub);font-size:14px}
.note.light{color:#9fb2dd}
.msg{border-radius:13px;padding:13px 17px;margin:14px 0;font-size:15px}
.msg.ok{background:#e9f9f1;border:1px solid #b7e6cf;color:#0a6e4c}
.msg.err{background:#fdeeee;border:1px solid #f3c2c2;color:#a02c2c}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:0 8px 24px rgba(24,34,56,.05)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}
section.blk{padding:46px 0}
.sec-h{font-size:clamp(22px,3.4vw,30px);font-weight:900;margin:26px 0 4px}

/* 主視覺 */
.hero{background:radial-gradient(900px 480px at 85% -10%,rgba(99,102,241,.5),transparent 60%),radial-gradient(700px 420px at 8% 110%,rgba(34,211,238,.3),transparent 60%),var(--navy);color:#fff;padding:56px 0 64px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:3px;color:#9fd8ff;border:1px solid rgba(159,216,255,.35);border-radius:999px;padding:5px 15px;margin-bottom:20px}
.hero h1{font-size:clamp(30px,5vw,50px);line-height:1.22;font-weight:900}
.hero h1 .g{background:linear-gradient(92deg,#67e8f9,#a5b4fc);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{margin-top:16px;font-size:17.5px;color:#c6d2f2;max-width:540px}
.hero .cta{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap}
.dash{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:24px;padding:24px}
.dash .lv{font-size:12.5px;color:#9fb2dd;letter-spacing:2px}
.dash .xpnum{font-size:26px;font-weight:900;color:#fff}
.mini{margin-top:16px;display:grid;gap:9px}
.mini .m{display:grid;grid-template-columns:74px 1fr 42px;gap:10px;align-items:center;font-size:13.5px;color:#dbe4fb}
.mini .bar,.bars .bar{height:8px;border-radius:99px;background:rgba(255,255,255,.14);overflow:hidden}
.mini .bar i,.bars .bar i{display:block;height:100%;border-radius:99px;background:var(--grad)}
.xpbar{height:12px;border-radius:99px;background:rgba(255,255,255,.14);overflow:hidden;margin:12px 0 8px}
.xpbar i{display:block;height:100%;border-radius:99px;background:linear-gradient(92deg,#ffb020,#ff7847)}
.xpbar.dark{background:#e4e8f2}

/* 特色與任務 */
.feats{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:22px}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px}
.feat b{font-size:16.5px}
.feat p{color:var(--sub);font-size:14.5px;margin-top:4px}
.tasks{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}
.task{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px}
.task h3{font-size:17px;font-weight:900}
.task p{color:var(--sub);font-size:14.5px;margin:6px 0 12px;min-height:66px}
.task .meta{display:flex;justify-content:space-between;align-items:center;font-size:13.5px;color:var(--sub)}
.task .meta a{font-weight:900;text-decoration:none}
.task.done{border-color:#bfe8d5;background:#f2fbf7}
.ok{color:var(--ok)}

/* 表單 */
.narrow{max-width:560px}
form.form{display:grid;gap:14px;margin:20px 0 40px}
.frow{display:grid;gap:6px}
.frow label{font-weight:700;font-size:14.5px}
.frow input,.frow select{font:inherit;font-size:16px;padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;background:#fff;width:100%}
.frow input:focus,.frow select:focus{outline:2px solid var(--cyan);border-color:transparent}
.frow.check label{display:flex;gap:9px;align-items:center;font-weight:600}
.frow.check input{width:auto}

/* 作答 */
.qmeta{display:flex;justify-content:space-between;color:var(--sub);font-size:14px;margin-bottom:12px;gap:10px;flex-wrap:wrap}
.qtext{font-size:18px;font-weight:600;line-height:1.8;white-space:pre-line}
.opts{display:grid;gap:10px;margin-top:18px}
.opt{display:flex;gap:12px;align-items:flex-start;text-align:left;font:inherit;font-size:16px;font-weight:600;background:#fbfcfe;border:1.5px solid var(--line);border-radius:14px;padding:13px 16px;cursor:pointer;width:100%}
.opt .k{flex:none;width:26px;height:26px;border-radius:8px;background:#eef1fb;color:var(--navy);display:flex;align-items:center;justify-content:center;font-weight:900;font-size:14px}
.opt.sel{border-color:var(--violet);background:#eef0fe}
.dots{display:flex;gap:7px;flex-wrap:wrap;margin-top:18px}
.dot{width:34px;height:34px;border-radius:10px;border:1.5px solid var(--line);background:#fff;font:inherit;font-weight:700;cursor:pointer}
.dot.done{background:#e9f9f1;border-color:#b7e6cf}
.dot.now{border-color:var(--violet);background:#eef0fe}
.qnav{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}
.qnav .btn.grad{margin-left:auto}
.scorebox{text-align:center;padding:8px 0 4px}
.scorebox .score{font-size:52px;font-weight:900;line-height:1.1}
.scorebox p{color:var(--sub);max-width:520px;margin:8px auto 0}
.bars{display:grid;gap:10px;margin-top:18px}
.bar-row{display:grid;grid-template-columns:92px 1fr 48px;gap:10px;align-items:center;font-size:14.5px}
.bars .bar{background:#e9edf7}
.bars .bar i.low{background:linear-gradient(92deg,#ffb020,#ff7847)}
.nextbox{margin-top:18px;background:#fff8ea;border:1px solid #f2d492;border-radius:14px;padding:14px 17px;font-size:15px}
.exp-item{border-top:1px solid var(--line);padding:14px 0}
.exp-item p{margin:4px 0}
.ans.right{color:var(--ok);font-weight:800}
.ans.wrong{color:var(--bad);font-weight:800}
.wrongitem{border-top:1px solid var(--line);padding:10px 0;font-size:14.5px}

/* 單字卡 */
.vwrap{max-width:560px;margin:24px auto 44px;text-align:center}
.vcard{position:relative;height:300px;cursor:pointer;perspective:1000px}
.vfront,.vback{position:absolute;inset:0;border-radius:24px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:26px;backface-visibility:hidden;-webkit-backface-visibility:hidden;transition:transform .5s}
.vfront{background:var(--navy);color:#fff;box-shadow:0 22px 44px rgba(11,18,38,.26)}
.vback{background:#fff;border:1px solid var(--line);transform:rotateY(180deg);box-shadow:0 22px 44px rgba(24,34,56,.1)}
.vcard.flip .vfront{transform:rotateY(180deg)}
.vcard.flip .vback{transform:rotateY(360deg)}
.lvchip{font-size:12px;letter-spacing:2px;color:#9fd8ff;border:1px solid rgba(159,216,255,.4);padding:4px 12px;border-radius:99px;margin-bottom:14px}
.vword{font-size:clamp(36px,7vw,50px);font-weight:900}
.vpos{color:#a8bce6;margin-top:2px}
.vhint{margin-top:18px;font-size:13px;color:#7f92c2}
.vmean{font-size:25px;font-weight:900}
.vcol{margin-top:8px;color:var(--violet);font-weight:800}
.vex{margin-top:10px;color:var(--sub);font-size:15px}
.vbtns{display:flex;gap:12px;justify-content:center;margin-top:20px}

/* 訂閱 */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px}
.plan-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px}
.plan-card.pro{border-color:#c9d4ff;background:linear-gradient(180deg,#f4f6ff,#fff)}
.plan-card h2{font-size:18px;font-weight:900}
.plan-card .price{font-size:32px;font-weight:900;margin:8px 0}
.plan-card .price span{font-size:14px;color:var(--sub);font-weight:600}
.plan-card ul{list-style:none;color:var(--sub);font-size:14.5px;display:grid;gap:6px}
.plan-card li::before{content:"·";color:var(--amber);font-weight:900;margin-right:7px}

/* 後台 */
table.adm{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff}
table.adm th,table.adm td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
table.adm th{background:#eef1fb}
.admwrap{overflow-x:auto;border-radius:14px}
textarea.ta{font:inherit;padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;width:100%;min-height:90px}

/* 頁尾 */
footer.site{background:var(--navy);color:#8fa1cc;padding:40px 0;margin-top:56px;font-size:14px}
.flogo{display:flex;gap:11px;align-items:center;margin-bottom:13px}
.flogo img{width:32px;height:32px}
.flogo b{color:#fff;font-size:17px}
.flinks{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:13px}
.flinks a{color:#c6d2f2;text-decoration:none;font-weight:600}

/* 手機底部導覽（App 式）：桌機不顯示 */
.tabbar{display:none}
@media (max-width:860px){
  .hero-grid,.grid2,.feats{grid-template-columns:1fr}
  .tasks,.plans{grid-template-columns:1fr}
  .task p{min-height:0}
  nav.main{order:3;width:100%}
  .streak-chip{display:none}
  .hbar{gap:10px}
  .qnav .btn.grad{margin-left:0}
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  footer.site{margin-bottom:0}
  .tabbar{position:fixed;left:0;right:0;bottom:0;z-index:60;display:grid;grid-template-columns:repeat(5,1fr);
    background:rgba(11,18,38,.96);backdrop-filter:blur(14px);border-top:1px solid rgba(255,255,255,.12);
    padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
  .tabbar .tab{display:flex;flex-direction:column;align-items:center;gap:2px;color:#8fa1cc;text-decoration:none;
    font-size:11.5px;font-weight:700;padding:5px 0 3px;border-radius:12px;min-height:48px;justify-content:center}
  .tabbar .tab svg{width:23px;height:23px}
  .tabbar .tab.on{color:#fff}
  .tabbar .tab.on svg{color:var(--cyan)}
  .opt{padding:15px 16px}
  .vbtns .btn,.qnav .btn{padding:14px 22px}
}