/* ============================================================
   內容頁共用模板樣式
   配色完全由各頁 <style> 內的 :root 變數決定，本檔不含任何寫死的顏色。
   各頁需定義的變數：
   --dark --card-bg --accent --accent2 --silver --text
   --accent-rgb --dark-rgb（rgba() 用的逗號分隔三元組）
   --subtitle --navlink --intro --dim --dim2 --latin --mag --td --footer
   ============================================================ */

*{margin:0;padding:0;box-sizing:border-box;}
body{background:var(--dark);color:var(--text);font-family:'PingFang TC','微軟正黑體','Microsoft JhengHei','Noto Sans TC',sans-serif;line-height:1.8;}
a{color:var(--accent);text-decoration:none;}

header{background:linear-gradient(160deg,var(--dark) 0%,var(--card-bg) 100%);padding:3rem 2rem 2rem;text-align:center;border-bottom:1px solid rgba(var(--accent-rgb),0.2);}
header h1{font-size:2.4rem;color:var(--accent2);letter-spacing:.15em;text-shadow:0 0 30px rgba(var(--accent-rgb),0.5);}
header .subtitle{color:var(--subtitle);font-size:1rem;margin:.4rem 0 1.8rem;letter-spacing:.2em;}
.hero-svgs{display:flex;gap:2rem;justify-content:center;flex-wrap:wrap;margin-top:1rem;}

nav{position:sticky;top:0;background:rgba(var(--dark-rgb),0.96);backdrop-filter:blur(8px);border-bottom:1px solid rgba(var(--accent-rgb),0.15);z-index:100;padding:.55rem 0;}
nav ul{display:flex;justify-content:center;gap:.2rem;list-style:none;flex-wrap:wrap;}
nav a{padding:.4rem .95rem;border-radius:20px;font-size:.82rem;color:var(--navlink);transition:all .2s;letter-spacing:.05em;}
nav a:hover,nav a.active{background:rgba(var(--accent-rgb),0.18);color:var(--accent);}

main{max-width:900px;margin:0 auto;padding:2rem 1.5rem;}
section{margin-bottom:3.5rem;scroll-margin-top:3.2rem;}
.sec-title{font-size:1.35rem;color:var(--accent);border-left:3px solid var(--accent);padding-left:.9rem;margin-bottom:1.5rem;letter-spacing:.1em;}
.sec-title span{font-size:.8rem;color:var(--dim2);margin-left:.6rem;}

.intro-box{background:var(--card-bg);border:1px solid rgba(var(--accent-rgb),0.15);border-radius:12px;padding:1.5rem;line-height:2;color:var(--intro);}
.intro-box strong{color:var(--accent2);}
blockquote{border-left:4px solid var(--accent);background:var(--card-bg);border-radius:0 12px 12px 0;padding:1rem 1.4rem;margin-top:1.4rem;font-style:italic;color:var(--silver);}

.fact-table{width:100%;border-collapse:collapse;background:var(--card-bg);border-radius:12px;overflow:hidden;border:1px solid rgba(var(--accent-rgb),0.12);}
.fact-table th,.fact-table td{padding:.75rem 1.1rem;text-align:left;font-size:.9rem;}
.fact-table th{background:rgba(var(--accent-rgb),0.1);color:var(--accent);font-weight:bold;width:30%;border-bottom:1px solid rgba(var(--accent-rgb),0.15);}
.fact-table td{color:var(--td);border-bottom:1px solid rgba(255,255,255,0.04);}
.fact-table tr:last-child th,.fact-table tr:last-child td{border-bottom:none;}

.steps{display:flex;flex-direction:column;gap:1.2rem;}
.step{display:flex;gap:1.2rem;align-items:flex-start;background:var(--card-bg);border-radius:12px;padding:1.3rem;border:1px solid rgba(var(--accent-rgb),0.1);}
.step-num{width:38px;height:38px;border-radius:50%;background:rgba(var(--accent-rgb),0.2);border:2px solid var(--accent);color:var(--accent);font-weight:bold;font-size:1rem;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.step-body h3{color:var(--accent2);margin-bottom:.3rem;font-size:1rem;}
.step-body p{color:var(--dim);font-size:.9rem;line-height:1.8;}

.star-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1.2rem;}
.star-card{background:var(--card-bg);border:1px solid rgba(var(--accent-rgb),0.12);border-radius:12px;padding:1.3rem;}
.star-card .star-name{font-size:1.05rem;color:var(--accent2);margin-bottom:.2rem;}
.star-card .star-latin{font-size:.75rem;color:var(--latin);font-style:italic;margin-bottom:.7rem;}
.star-card .star-dot{width:12px;height:12px;border-radius:50%;display:inline-block;margin-right:.5rem;vertical-align:middle;}
.star-card p{font-size:.88rem;color:var(--dim);line-height:1.8;}
.star-card .star-mag{font-size:.8rem;color:var(--mag);margin-top:.5rem;}

.myth-box{background:var(--card-bg);border-radius:12px;padding:1.8rem;border:1px solid rgba(var(--accent-rgb),0.12);}
.myth-box p{color:var(--dim);line-height:2;margin-bottom:1rem;}
.myth-box p:last-child{margin-bottom:0;}
.myth-box strong{color:var(--accent2);}
.myth-divider{border:none;border-top:1px solid rgba(var(--accent-rgb),0.15);margin:1.2rem 0;}

.timeline{position:relative;padding-left:2rem;}
.timeline::before{content:'';position:absolute;left:.5rem;top:0;bottom:0;width:2px;background:rgba(var(--accent-rgb),0.25);}
.tl-item{position:relative;margin-bottom:1.4rem;}
.tl-item::before{content:'';position:absolute;left:-1.57rem;top:.4rem;width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent);}
.tl-item .tl-label{font-size:.78rem;color:var(--accent);font-weight:bold;margin-bottom:.2rem;}
.tl-item p{font-size:.88rem;color:var(--dim2);line-height:1.8;}

.obs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem;}
.obs-card{background:var(--card-bg);border:1px solid rgba(var(--accent-rgb),0.1);border-radius:10px;padding:1.1rem;text-align:center;}
.obs-card .obs-icon{font-size:1.8rem;margin-bottom:.5rem;}
.obs-card h3{color:var(--accent);font-size:.9rem;margin-bottom:.4rem;}
.obs-card p{font-size:.82rem;color:var(--dim2);line-height:1.7;}

footer{text-align:center;padding:2rem;color:var(--footer);font-size:.8rem;border-top:1px solid rgba(var(--accent-rgb),0.08);}

/* ---- 延伸版面元件（圖文並排、卡片格、辨認框；仙后／獅子／獵戶／天蠍等頁使用） ---- */
header .latin{font-size:.95rem;font-style:italic;opacity:.7;margin-top:.35rem;color:var(--subtitle);}

.info-row{display:flex;gap:2rem;align-items:flex-start;flex-wrap:wrap;}
.info-row .text{flex:1 1 300px;}
.info-row .text p{margin-bottom:.9rem;color:var(--intro);}
.info-row .text p:last-child{margin-bottom:0;}
.info-row .text strong{color:var(--accent2);}
.info-row .text em{color:var(--silver);}
.info-row .visual{flex:0 0 auto;background:var(--card-bg);border-radius:16px;padding:1rem;text-align:center;border:1px solid rgba(var(--accent-rgb),0.2);}
.info-row .visual figcaption{font-size:.82rem;color:var(--dim2);margin-top:.6rem;}

.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1.4rem;}
.card{background:var(--card-bg);border-radius:14px;padding:1.4rem 1.2rem;text-align:center;transition:transform .2s;border:1px solid rgba(var(--accent-rgb),0.15);}
.card:hover{transform:translateY(-4px);}
.card .icon{font-size:2.8rem;margin-bottom:.6rem;}
.card h3{color:var(--accent2);font-size:1.05rem;margin-bottom:.4rem;}
.card p{font-size:.92rem;color:var(--dim);margin:0;}

.identify-box{background:var(--card-bg);border-radius:16px;padding:1.8rem;border:1px solid rgba(var(--accent-rgb),0.2);}
.identify-box h3{color:var(--accent);margin-bottom:1rem;font-size:1.1rem;}
.step-list{counter-reset:step;list-style:none;}
.step-list li{counter-increment:step;display:flex;gap:1rem;align-items:flex-start;margin-bottom:1rem;padding:.8rem 1rem;background:rgba(var(--accent-rgb),0.07);border-radius:10px;border:1px solid rgba(var(--accent-rgb),0.1);}
.step-list li::before{content:counter(step);min-width:28px;height:28px;background:var(--accent);color:var(--dark);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:bold;flex-shrink:0;box-shadow:0 0 10px rgba(var(--accent-rgb),0.5);}
.step-list li .step-text{color:var(--dim);font-size:.93rem;line-height:1.7;}
.step-list li .step-text strong{color:var(--accent2);}

.tl-item h3{color:var(--accent2);font-size:1rem;}

/* ---- 鍵盤焦點 ---- */
a:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

/* ---- 相關星座 / 上下一個（頁面間互連） ---- */
.related-box{background:var(--card-bg);border:1px solid rgba(var(--accent-rgb),0.12);border-radius:12px;padding:1.4rem;}
.related-list{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:.8rem;margin-bottom:1.3rem;}
.related-list a{display:block;padding:.75rem .95rem;border:1px solid rgba(var(--accent-rgb),0.2);border-radius:10px;color:var(--accent2);font-size:.95rem;transition:background .2s,border-color .2s;}
.related-list a:hover{background:rgba(var(--accent-rgb),0.1);border-color:var(--accent);}
.related-list a span{display:block;font-size:.72rem;color:var(--dim2);font-style:italic;margin-top:.2rem;}
.seq-nav{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.88rem;padding-top:1rem;border-top:1px solid rgba(var(--accent-rgb),0.12);}
.seq-nav a:hover{text-decoration:underline;}
.related-all{margin-top:.9rem;font-size:.85rem;}

/* 手機上導覽列會折成兩行，錨點捲動需預留更高的 sticky nav */
@media (max-width:640px){
  section{scroll-margin-top:5.8rem;}
}