/* 《靈性修煉指引》— 暖米色・金色・墨褐 */
:root{
  --bg:#faf5ec; --bg-2:#f3eadb; --card:#fffdf8;
  --ink:#3b3222; --ink-2:#6d6250; --muted:#958a76;
  --gold:#a8874f; --gold-2:#c9ab72; --rose:#d9bfb2; --line:#e6dac4;
  --deep:#2f2a22;
  --serif:"Noto Serif TC","Songti TC","PMingLiU",serif;
  --sans:"Noto Sans TC","PingFang TC","Microsoft JhengHei",sans-serif;
  --r:14px; --shadow:0 10px 30px -12px rgba(80,60,30,.25);
  --w:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.85;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.4;letter-spacing:.04em}
.wrap{max-width:var(--w);margin:0 auto;padding:0 20px}
.eyebrow{font-size:.8rem;letter-spacing:.3em;color:var(--gold);text-transform:uppercase}
.section{padding:88px 0}
.section-head{text-align:center;max-width:680px;margin:0 auto 48px}
.section-head h2{font-size:clamp(1.6rem,3.4vw,2.2rem);margin:.4em 0 .5em}
.section-head p{color:var(--ink-2)}
.ornament{display:flex;align-items:center;justify-content:center;gap:12px;color:var(--gold-2)}
.ornament::before,.ornament::after{content:"";width:48px;height:1px;background:currentColor}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,245,236,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:1.1rem;letter-spacing:.08em}
.logo-mark{width:30px;height:30px;border-radius:50%;background:radial-gradient(circle at 50% 45%,#fff6dc 0 22%,var(--gold-2) 23% 36%,transparent 37%),radial-gradient(circle,transparent 55%,var(--gold) 56% 60%,transparent 61%)}
.nav{display:flex;gap:28px;font-size:.95rem;color:var(--ink-2)}
.nav a:hover,.nav a.active{color:var(--gold)}
.menu-btn{display:none;background:none;border:0;font-size:1.5rem;color:var(--ink);cursor:pointer}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:999px;font-size:.95rem;letter-spacing:.06em;transition:.2s;cursor:pointer;border:1px solid transparent}
.btn-primary{background:var(--deep);color:#fbf3e2}
.btn-primary:hover{background:var(--gold)}
.btn-ghost{border-color:var(--gold-2);color:var(--ink)}
.btn-ghost:hover{background:var(--gold-2);color:#fff}
.btn-buy{background:#8f6e3a;color:#fff}
.btn-buy:hover{background:var(--deep)}

/* hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(ellipse at 70% 0%,#fff3d6 0,transparent 60%),var(--bg)}
.hero .wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;padding-top:72px;padding-bottom:80px}
.hero h1{font-size:clamp(2rem,5vw,3.3rem);margin:.3em 0 .4em;letter-spacing:.08em}
.hero h1 small{display:block;font-size:.42em;color:var(--ink-2);letter-spacing:.2em;margin-top:.4em}
.hero p.lead{font-size:1.08rem;color:var(--ink-2);max-width:30em}
.hero .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-stack{position:relative;height:440px}
.hero-stack img{position:absolute;width:46%;border-radius:8px;box-shadow:var(--shadow)}
.hero-stack img:nth-child(1){left:2%;top:40px;transform:rotate(-7deg)}
.hero-stack img:nth-child(2){left:27%;top:0;z-index:2}
.hero-stack img:nth-child(3){right:2%;top:40px;transform:rotate(7deg)}
.glow{position:absolute;inset:auto -10% -40% -10%;height:60%;background:radial-gradient(ellipse,rgba(201,171,114,.25),transparent 70%);pointer-events:none}

/* features */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px 22px}
.feature .icon{font-size:1.6rem;margin-bottom:10px}
.feature h3{font-size:1.08rem;margin-bottom:6px}
.feature p{color:var(--ink-2);font-size:.93rem}

/* series */
.series{background:var(--bg-2)}
.series + .series{background:var(--bg)}
.series-intro{display:grid;grid-template-columns:340px 1fr;gap:48px;align-items:center;margin-bottom:48px}
.series-intro img{border-radius:var(--r);box-shadow:var(--shadow)}
.series-intro h2{font-size:clamp(1.6rem,3vw,2.1rem);margin:.3em 0 .6em}
.series-intro p{color:var(--ink-2)}
.path{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;font-size:.88rem}
.path span{padding:4px 14px;border-radius:999px;border:1px solid var(--gold-2);color:var(--gold)}
.path span + span::before{content:"→ ";color:var(--muted)}
.books{display:grid;grid-template-columns:repeat(5,1fr);gap:22px}
.book-card{display:flex;flex-direction:column;background:var(--card);border-radius:var(--r);overflow:hidden;border:1px solid var(--line);transition:.25s}
.book-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.book-card .cover{aspect-ratio:3/4;overflow:hidden;background:var(--bg-2)}
.book-card .cover img{width:100%;height:100%;object-fit:cover}
.book-card .body{padding:16px 16px 20px;display:flex;flex-direction:column;flex:1}
.book-card .vol{font-size:.75rem;letter-spacing:.2em;color:var(--gold)}
.book-card h3{font-size:1.02rem;margin:4px 0 2px}
.book-card .sub{font-size:.84rem;color:var(--muted);line-height:1.6}
.book-card .more{margin-top:auto;padding-top:12px;font-size:.85rem;color:var(--gold)}

/* format / buy */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split img{border-radius:var(--r);box-shadow:var(--shadow)}
.checklist{list-style:none;margin:20px 0}
.checklist li{padding:10px 0 10px 34px;position:relative;border-bottom:1px dashed var(--line)}
.checklist li::before{content:"✦";position:absolute;left:6px;color:var(--gold)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:s}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px 24px;counter-increment:s}
.step::before{content:counter(s,decimal-leading-zero);font-family:var(--serif);font-size:1.8rem;color:var(--gold-2)}
.step h3{font-size:1.05rem;margin:6px 0}
.step p{color:var(--ink-2);font-size:.93rem}
.faq{max-width:760px;margin:0 auto}
.faq details{border-bottom:1px solid var(--line);padding:18px 4px}
.faq summary{cursor:pointer;font-family:var(--serif);font-size:1.05rem;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::after{content:"+";color:var(--gold);font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{color:var(--ink-2);margin-top:10px}

.quote{background:var(--deep);color:#f4ead6;text-align:center}
.quote blockquote{font-family:var(--serif);font-size:clamp(1.3rem,3vw,1.9rem);letter-spacing:.08em;max-width:780px;margin:0 auto;line-height:1.7}
.quote cite{display:block;margin-top:18px;font-style:normal;color:var(--gold-2);font-size:.9rem;letter-spacing:.2em}

/* footer */
.site-footer{background:#ece2cf;padding:56px 0 32px;font-size:.92rem;color:var(--ink-2)}
.site-footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px}
.site-footer h4{color:var(--ink);font-size:1rem;margin-bottom:10px}
.site-footer li{list-style:none;margin:4px 0}
.site-footer a:hover{color:var(--gold)}
.site-footer .fine{margin-top:36px;padding-top:20px;border-top:1px solid #dccfb6;font-size:.8rem;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

/* book page */
.crumbs{font-size:.85rem;color:var(--muted);padding:24px 0 0}
.crumbs a:hover{color:var(--gold)}
.book-hero{display:grid;grid-template-columns:380px 1fr;gap:56px;padding:32px 0 72px;align-items:start}
.book-hero .cover{border-radius:10px;overflow:hidden;box-shadow:0 24px 50px -20px rgba(70,50,20,.45);position:sticky;top:90px}
.book-hero h1{font-size:clamp(1.9rem,4vw,2.8rem);margin:.2em 0 .1em}
.book-hero .subtitle{font-family:var(--serif);font-size:1.15rem;color:var(--ink-2)}
.hook{margin:28px 0;padding:18px 22px;border-left:3px solid var(--gold-2);background:var(--card);font-family:var(--serif);font-size:1.1rem;border-radius:0 var(--r) var(--r) 0}
.book-hero .intro p{margin-bottom:1em;color:var(--ink-2)}
.buybox{margin:28px 0;padding:24px;border:1px solid var(--line);border-radius:var(--r);background:var(--card)}
.buybox .price{font-family:var(--serif);font-size:1.8rem;color:var(--ink)}
.buybox .price small{font-size:.9rem;color:var(--muted);margin-left:6px}
.buybox .fmt{font-size:.9rem;color:var(--ink-2);margin:6px 0 16px}
.buybox .actions{display:flex;flex-wrap:wrap;gap:10px}
.block{margin-top:40px}
.block h2{font-size:1.35rem;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.block h2::before{content:"";width:18px;height:1px;background:var(--gold)}
.tags{display:flex;flex-wrap:wrap;gap:10px}
.tags li{list-style:none;padding:6px 14px;background:var(--card);border:1px solid var(--line);border-radius:999px;font-size:.9rem}
.toc details{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden}
.toc summary,.toc .flat{padding:14px 18px;font-family:var(--serif);cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px}
.toc .flat{cursor:default;background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;color:var(--ink-2)}
.toc summary::after{content:"＋";color:var(--gold)}
.toc details[open] summary::after{content:"－"}
.toc ol{padding:0 18px 16px 44px;color:var(--ink-2);font-size:.95rem}
.toc ol li{padding:3px 0}
.note{margin-top:24px;font-size:.85rem;color:var(--muted);padding:14px 16px;background:var(--bg-2);border-radius:10px}
.pager{display:flex;justify-content:space-between;gap:16px;padding:32px 0;border-top:1px solid var(--line)}
.pager a{display:flex;flex-direction:column;max-width:48%}
.pager a small{color:var(--muted);font-size:.8rem}
.pager a span{font-family:var(--serif)}
.pager a:hover span{color:var(--gold)}
.pager .next{text-align:right;margin-left:auto}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .8s,transform .8s}
.reveal.in{opacity:1;transform:none}

@media (max-width:980px){
  .books{grid-template-columns:repeat(3,1fr)}
  .features{grid-template-columns:repeat(2,1fr)}
  .hero .wrap,.split{grid-template-columns:1fr}
  .hero-stack{height:360px;max-width:520px;margin:0 auto;width:100%}
  .series-intro{grid-template-columns:1fr}
  .series-intro img{max-width:380px}
  .book-hero{grid-template-columns:1fr;gap:32px}
  .book-hero .cover{position:static;max-width:320px;margin:0 auto}
}
@media (max-width:720px){
  .section{padding:64px 0}
  .nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:8px 20px}
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line)}
  .menu-btn{display:block}
  .books{grid-template-columns:repeat(2,1fr);gap:14px}
  .features,.steps{grid-template-columns:1fr}
  .site-footer .cols{grid-template-columns:1fr}
  .hero-stack{height:280px}
  .hero .wrap{padding-top:40px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}

/* 缺圖佔位 */
.ph{display:flex;align-items:center;justify-content:center;aspect-ratio:3/4;width:100%;border-radius:inherit;background:linear-gradient(160deg,#f6e8cc,#d9c09a);color:#6d5a37;font-family:var(--serif);text-align:center;padding:16px;letter-spacing:.1em}
.series-intro .ph{aspect-ratio:1;border-radius:var(--r)}
.split .ph{aspect-ratio:16/9;border-radius:var(--r)}
.hero-stack .ph{position:absolute;width:46%;box-shadow:var(--shadow);border-radius:8px}
.hero-stack .ph:nth-child(1){left:2%;top:40px;transform:rotate(-7deg)}
.hero-stack .ph:nth-child(2){left:27%;top:0;z-index:2}
.hero-stack .ph:nth-child(3){right:2%;top:40px;transform:rotate(7deg)}
.empty{color:var(--muted);grid-column:1/-1}

.book-card .cover{aspect-ratio:auto}
.book-card .cover,.book-hero .cover{position:relative}
.book-card .cover .ph,.book-hero .cover .ph{aspect-ratio:auto;height:100%}
.book-card .cover img{height:100%}
.book-hero .cover img{width:100%;height:100%;object-fit:cover}
/* 寬幅系列圖（例如療癒音樂橫幅） */
.series-intro.wide{grid-template-columns:1fr}
.series-intro.wide img{max-width:none;width:100%}

.book-card .price-tag{display:inline-block;margin-top:10px;font-family:var(--serif);font-size:1.05rem;color:var(--ink);letter-spacing:.04em}
.book-card .price-tag+.more{padding-top:6px}

/* 購買須知 */
.notice{max-width:720px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-left:3px solid var(--gold-2);border-radius:var(--r);padding:26px 30px;line-height:2}
.notice h3{font-size:1.15rem;margin-bottom:10px}
.notice p{color:var(--ink-2)}
.book-hero .notice{margin:28px 0 0;max-width:none;scroll-margin-top:90px}

.explore{list-style:none}
.explore li{position:relative;padding:8px 0 8px 28px;border-bottom:1px dashed var(--line);color:var(--ink-2)}
.explore li::before{content:"✦";position:absolute;left:4px;color:var(--gold)}