:root{
  --ink:#1E2340; --navy:#1E2A5A; --navy-2:#2B3A7A; --paper:#FBF7F0; --card:#FFFFFF; --line:#E8E1D3;
  --muted:#6B6F86; --accent:#FFB547; --accent-2:#F97316; --ok:#22C55E; --shadow:0 6px 24px rgba(30,42,90,.08);
  --r:18px; --mono:"JetBrains Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit}
img,svg{max-width:100%;height:auto;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
h1,h2,h3{line-height:1.3;margin:0 0 .5em}
h1{font-size:clamp(28px,4.6vw,46px);font-weight:900;letter-spacing:.5px}
h2{font-size:clamp(22px,3vw,30px);font-weight:900}
h3{font-size:19px;font-weight:700}
code,.tag{font-family:var(--mono)}
a.tag{text-decoration:none}
a.tag:hover{background:#E9E0CF}

/* top bar */
.topbar{position:sticky;top:0;z-index:50;background:rgba(251,247,240,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar-in{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-mark{background:var(--navy);color:var(--accent);font-family:var(--mono);font-weight:700;padding:6px 9px;border-radius:10px;font-size:15px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:16px}.logo-text small{font-size:12px;color:var(--muted)}
.nav{display:flex;gap:4px}
.nav a{text-decoration:none;padding:8px 12px;border-radius:999px;font-size:15px;font-weight:500;color:#3A3F5C}
.nav a:hover{background:#F1EADC}
.nav a.on{background:var(--navy);color:#fff}
.menu-btn{display:none;border:0;background:var(--navy);color:#fff;font-size:20px;width:42px;height:42px;border-radius:12px;cursor:pointer}
@media (max-width:900px){
  .menu-btn{display:block}
  .nav{position:fixed;top:66px;left:0;right:0;flex-direction:column;background:var(--paper);padding:12px 20px 20px;border-bottom:1px solid var(--line);display:none;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .nav a{padding:12px 14px;font-size:16px}
}

main{min-height:70vh;padding-top:28px;padding-bottom:60px}

/* hero */
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;padding:30px 0 40px}
.hero .eyebrow{display:inline-block;background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 14px;font-size:13px;color:var(--muted);margin-bottom:14px}
.hero h1 em{font-style:normal;background:linear-gradient(transparent 62%,var(--accent) 62%)}
.hero p.lead{font-size:18px;color:#454A66;max-width:560px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.stats{display:flex;gap:26px;margin-top:28px;flex-wrap:wrap}
.stats div b{display:block;font-size:28px;font-weight:900;color:var(--navy)}
.stats div span{font-size:13px;color:var(--muted)}
@media (max-width:860px){.hero{grid-template-columns:1fr}.hero-art{order:-1;max-width:420px}}

.btn{display:inline-flex;align-items:center;gap:8px;text-decoration:none;border:0;cursor:pointer;font:inherit;font-weight:700;padding:12px 22px;border-radius:999px;font-size:16px;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-primary{background:var(--navy);color:#fff}
.btn-accent{background:var(--accent);color:var(--navy)}
.btn-ghost{background:#fff;color:var(--navy);border:1.5px solid var(--navy)}
.btn-sm{padding:7px 14px;font-size:14px}

/* sections */
.sec{margin:46px 0}
.sec-head{display:flex;justify-content:space-between;align-items:end;gap:12px;margin-bottom:18px;flex-wrap:wrap}
.sec-head p{margin:0;color:var(--muted)}
.book-no{font-family:var(--mono);color:var(--accent-2);font-weight:700;font-size:14px;letter-spacing:2px}

.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:980px){.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}.toolbar{position:static}}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:0 1px 0 rgba(0,0,0,.02);text-decoration:none;display:block;transition:transform .15s,box-shadow .15s,border-color .15s}
a.card:hover,.card.click:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#D9CFBD}
.card.click{cursor:pointer}

.area-card .num{font-family:var(--mono);font-size:13px;color:var(--accent-2);font-weight:700}
.area-card .ico{font-size:34px;margin:6px 0}
.area-card p{margin:0;color:var(--muted);font-size:14.5px}

.cat-card{padding:0;overflow:hidden}
.cat-card .body{padding:16px 18px 18px}
.cat-card p{margin:4px 0 0;color:var(--muted);font-size:14px}

/* steps / start */
.steps3{counter-reset:s}
.step{position:relative;padding-top:52px}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:18px;left:20px;width:28px;height:28px;border-radius:50%;background:var(--navy);color:#fff;font-weight:700;display:grid;place-items:center;font-size:14px}

/* dictionary */
.toolbar{position:sticky;top:66px;z-index:20;background:var(--paper);padding:12px 0;display:flex;flex-direction:column;gap:12px}
.search{display:flex;align-items:center;gap:10px;background:#fff;border:1.5px solid var(--line);border-radius:999px;padding:4px 6px 4px 18px}
.search input{flex:1;border:0;outline:0;font:inherit;font-size:16px;padding:10px 0;background:transparent;min-width:0}
.search:focus-within{border-color:var(--navy)}
.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
.chip{flex:0 0 auto;border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:6px 14px;font:inherit;font-size:14px;cursor:pointer;white-space:nowrap}
.chip.on{background:var(--navy);border-color:var(--navy);color:#fff}
.chip .n{opacity:.6;margin-left:4px;font-size:12px}
.filters{display:flex;gap:8px;flex-wrap:wrap;align-items:center;font-size:14px;color:var(--muted)}

.cmd-card{display:flex;flex-direction:column;gap:8px;border-top:5px solid var(--c,#ccc)}
.cmd-top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.tag{display:inline-block;background:#F3EEE4;color:var(--navy);font-weight:700;padding:3px 10px;border-radius:8px;font-size:14.5px}
.cmd-card h3{margin:0;font-size:18px}
.cmd-card .scene{font-size:14px;color:var(--muted);margin:0}
.lv{font-size:12px;padding:2px 8px;border-radius:999px;background:#EEF2FF;color:#3730A3;white-space:nowrap}
.lv.l1{background:#DCFCE7;color:#166534}.lv.l3{background:#FEE2E2;color:#991B1B}
.fav{border:0;background:none;font-size:20px;cursor:pointer;line-height:1;padding:2px}
.empty{text-align:center;padding:60px 20px;color:var(--muted)}

/* command detail */
.crumb{font-size:14px;color:var(--muted);margin-bottom:14px}
.crumb a{text-decoration:none;color:var(--navy)}
.detail{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
@media (max-width:900px){.detail{grid-template-columns:1fr}}
.detail-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:6px}
.big-tag{font-family:var(--mono);font-size:24px;font-weight:700;background:var(--navy);color:var(--accent);padding:6px 16px;border-radius:12px}
.box{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;margin-bottom:16px}
.box h4{margin:0 0 8px;font-size:15px;color:var(--muted);font-weight:700}
.tipbox{background:#FFF7E6;border-color:#FBD99A}
.prompt{background:#1E2340;color:#F1F5F9;border-radius:14px;padding:16px 18px;font-size:16px;line-height:1.8;position:relative}
.prompt mark{background:#FFB547;color:#1E2340;border-radius:4px;padding:0 3px}
.prompt-actions{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.figure{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:12px}
.figure figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.io{display:grid;gap:10px}
.io .q{background:#EEF1FB;border-radius:12px;padding:10px 14px}
.io .a{background:#F0FDF4;border-radius:12px;padding:10px 14px;white-space:pre-line}
.io b{display:block;font-size:12px;color:var(--muted)}

/* path */
.day{display:grid;grid-template-columns:90px 1fr auto;gap:18px;align-items:center}
.day-no{background:var(--navy);color:#fff;border-radius:16px;text-align:center;padding:12px 0}
.day-no small{display:block;font-size:12px;opacity:.7}.day-no b{font-size:28px;font-weight:900}
.day.done .day-no{background:var(--ok)}
.day .cmds{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}
.day .cmds a{text-decoration:none}
@media (max-width:640px){.day{grid-template-columns:64px 1fr}.day .done-btn{grid-column:1/-1}}
.progress{height:12px;background:#ECE4D4;border-radius:999px;overflow:hidden}
.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--ok));transition:width .4s}

/* practice */
.prac{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media (max-width:900px){.prac{grid-template-columns:1fr}}
.field{margin-bottom:14px}
.field label{display:block;font-weight:700;font-size:14px;margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:16px;padding:11px 14px;border:1.5px solid var(--line);border-radius:12px;background:#fff}
.field textarea{min-height:90px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--navy)}

/* notes */
.note-card .fig{border-radius:14px;overflow:hidden;margin:-4px -4px 12px}
.badge{display:inline-block;font-size:12px;padding:2px 10px;border-radius:999px;background:#F3EEE4;color:#6B4E16;margin-right:6px}
.note-steps{counter-reset:n;list-style:none;padding:0;margin:0}
.note-steps li{counter-increment:n;position:relative;padding:14px 0 14px 54px;border-bottom:1px dashed var(--line)}
.note-steps li::before{content:counter(n);position:absolute;left:0;top:14px;width:38px;height:38px;border-radius:12px;background:var(--accent);color:var(--navy);font-weight:900;display:grid;place-items:center}

/* tools / methods */
.tool{display:flex;flex-direction:column;gap:6px}
.tool .t-type{font-size:12px;color:var(--muted)}
.method ol{margin:8px 0;padding-left:22px}
.method .res{background:#F0FDF4;border-radius:10px;padding:8px 12px;font-size:14px}

/* about */
.about{display:grid;grid-template-columns:280px 1fr;gap:32px;align-items:start}
@media (max-width:760px){.about{grid-template-columns:1fr}}
.avatar{aspect-ratio:1;border-radius:28px;background:linear-gradient(135deg,var(--navy),var(--navy-2));display:grid;place-items:center;color:var(--accent);font-size:56px;font-weight:900}
.contact-list{list-style:none;padding:0;margin:0}
.contact-list li{padding:10px 0;border-bottom:1px solid var(--line);display:flex;gap:10px}

/* cta band */
.band{background:var(--navy);color:#fff;border-radius:26px;padding:34px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.band p{margin:4px 0 0;opacity:.8}

/* footer */
.footer{background:#14193A;color:#C9CDE2;padding:40px 0 20px;margin-top:40px}
.footer .logo-text small{color:#9AA0BF}.footer .muted{color:#9AA0BF;font-size:14px;max-width:520px}
.foot-in{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.foot-links{display:flex;flex-direction:column;gap:6px}
.foot-links a{text-decoration:none;color:#E7E9F5;font-size:14px}
.copy{font-size:13px;color:#7F86AA;margin-top:24px;border-top:1px solid #262C55;padding-top:16px}

.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%) translateY(40px);background:var(--navy);color:#fff;padding:10px 20px;border-radius:999px;opacity:0;transition:.25s;z-index:99;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.line-fab{position:fixed;right:18px;bottom:18px;background:#06C755;color:#fff;text-decoration:none;font-weight:700;padding:12px 18px;border-radius:999px;box-shadow:0 8px 24px rgba(6,199,85,.35);z-index:40;font-size:15px}
@media print{.topbar,.line-fab,.footer{display:none}}

/* ===== 第二期：會員、AI、證書 ===== */
.nav a.me-link{border:1.5px solid var(--navy);margin-left:6px}
.nav a.me-link.on{color:#fff}
.auth-wrap{max-width:460px;margin:10px auto 40px}
.auth-box{padding:28px}
.btn-line{background:#06C755;color:#fff;width:100%;justify-content:center;margin:8px 0}
.btn-line.disabled{opacity:.5}
.or{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;margin:16px 0}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}
.tabs{display:flex;gap:8px;margin-bottom:14px}
.ai-ans{border-color:#A5B4FC;background:#F5F7FF}
.ai-text{white-space:pre-wrap;line-height:1.85;font-size:15.5px}
.ai-loading{display:flex;gap:6px;padding:10px 0}
.ai-loading span{width:10px;height:10px;border-radius:50%;background:var(--navy);animation:blink 1s infinite}
.ai-loading span:nth-child(2){animation-delay:.2s}.ai-loading span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,100%{opacity:.2}50%{opacity:1}}
.figure img{border-radius:12px;width:100%}
.note-card .fig img{aspect-ratio:320/230;object-fit:cover;width:100%}
.cert{max-width:860px;margin:0 auto;background:#fff;padding:16px;border-radius:20px;box-shadow:var(--shadow)}
.cert-in{border:3px double #C9A86A;border-radius:14px;padding:44px 30px;text-align:center;background:radial-gradient(circle at 50% 0,#FFF7E6,#fff 60%)}
.cert-mark{display:inline-block;background:var(--navy);color:var(--accent);font-family:var(--mono);font-weight:700;padding:8px 14px;border-radius:12px;font-size:20px;margin-bottom:14px}
.cert-name{font-size:44px;font-weight:900;color:var(--navy);border-bottom:2px solid #C9A86A;display:inline-block;padding:0 30px 6px;margin:10px 0 16px}
.cert-foot{display:flex;justify-content:space-around;margin:34px 0 14px;gap:20px;flex-wrap:wrap}
.cert-foot b{display:block;font-size:18px;border-top:1px solid #C9A86A;padding-top:8px;min-width:200px}
.cert-foot small{color:var(--muted)}
@media print{body{background:#fff}.crumb,.cert+div,.toast{display:none}main{padding:0}.cert{box-shadow:none}}