/* OPEN Design 裝修知識庫 v1 — 2026-08 */
:root{
  --bg:#383D41; --bg2:#2E3438; --line:#515759; --line2:#43484C;
  --sage:#84B394; --sage-d:#5F8A6F; --green:#007733;
  --paper:#F6F4F0; --ink:#2B3034; --ink2:#4A5157; --mute:#8A9096;
  --max:1100px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:#CCC;
  font:16px/1.85 "微軟正黑體","Microsoft JhengHei","Heiti TC","PingFang TC",sans-serif;}
img{max-width:100%;height:auto;display:block}
a{color:var(--sage);text-decoration:none}
a:hover{text-decoration:underline}

/* ---------- header ---------- */
.gh{background:#fff;border-bottom:1px solid #E3E1DD}
.gh-in{max-width:var(--max);margin:0 auto;display:flex;align-items:center;
  gap:4px;padding:0 16px;min-height:56px;flex-wrap:wrap}
.gh-logo{display:flex;align-items:center;gap:9px;margin-right:18px;padding:8px 0}
.gh-logo b{width:30px;height:30px;border-radius:50%;background:var(--sage);
  display:flex;align-items:center;justify-content:center;color:#fff;
  font:700 10px/1 sans-serif;letter-spacing:.5px}
.gh-logo span{color:#2B3034;font-weight:700;font-size:15px;letter-spacing:.5px}
.gh nav{display:flex;flex-wrap:wrap}
.gh nav a{display:block;padding:7px 11px;color:#2B3034;text-align:center;line-height:1.25}
.gh nav a i{display:block;font-style:normal;font-size:13.5px;font-weight:700}
.gh nav a em{display:block;font-style:normal;font-size:9.5px;color:#9AA0A5;letter-spacing:.6px}
.gh nav a:hover{text-decoration:none;background:#F2F5F3}
.gh nav a.at i{color:var(--sage-d)}
.gh nav a.at{box-shadow:inset 0 -3px 0 var(--sage)}

/* ---------- shell ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:22px 16px 60px}
.crumb{font-size:12.5px;color:#9AA0A5;margin:0 0 14px}
.crumb a{color:#A9B6AD}
.crumb span{color:#7C8288}

/* ---------- section title (站台同款) ---------- */
.sect{display:flex;align-items:center;gap:12px;margin:0 0 16px}
.sect b{width:34px;height:34px;border-radius:50%;background:var(--line2);flex:0 0 34px}
.sect u{text-decoration:none;font:300 26px/1 "Segoe UI",sans-serif;color:#EDEDED;letter-spacing:2px}
.sect i{font-style:normal;font-size:17px;color:#B9BFC4}

/* ---------- article paper ---------- */
.paper{background:var(--paper);color:var(--ink);border-radius:3px;
  padding:38px 44px 44px;box-shadow:0 2px 14px rgba(0,0,0,.28)}
.paper h1{font-size:31px;line-height:1.4;margin:0 0 6px;color:#1F2528;font-weight:700;letter-spacing:.3px}
.paper .meta{font-size:12.5px;color:#8A9096;margin:0 0 26px;padding-bottom:18px;border-bottom:2px solid #E4E0DA}
.paper .meta em{font-style:normal}
.paper .lead{font-size:17px;line-height:1.95;color:#3A4147;margin:0 0 26px}
.paper h2{font-size:23px;line-height:1.5;margin:44px 0 14px;padding-left:13px;
  border-left:5px solid var(--sage);color:#1F2528;font-weight:700;scroll-margin-top:20px}
.paper h3{font-size:18px;margin:28px 0 10px;color:#2B3034;font-weight:700}
.paper p{margin:0 0 17px;color:var(--ink2)}
.paper ul,.paper ol{margin:0 0 19px;padding-left:23px;color:var(--ink2)}
.paper li{margin:0 0 8px}
.paper strong{color:#1F2528}
.paper a{color:#0A6B3C;text-decoration:underline;text-underline-offset:3px}

/* key points */
.kp{background:#EDF3EE;border:1px solid #D3E2D8;border-radius:3px;padding:20px 24px;margin:0 0 28px}
.kp b{display:block;font-size:14px;color:#3E6B4F;margin:0 0 9px;letter-spacing:1px}
.kp ul{margin:0;padding-left:20px}
.kp li{color:#33474d;margin:0 0 6px}

/* TOC */
.toc{background:#FBFAF8;border:1px solid #E4E0DA;border-radius:3px;padding:18px 24px;margin:0 0 34px}
.toc b{display:block;font-size:13.5px;color:#6E757B;letter-spacing:1.5px;margin:0 0 9px}
.toc ol{margin:0;padding-left:20px;columns:2;column-gap:34px}
.toc li{margin:0 0 5px;break-inside:avoid}
.toc a{color:#3A4147;text-decoration:none;font-size:14.5px}
.toc a:hover{color:#0A6B3C;text-decoration:underline}

/* tables */
.tw{margin:6px 0 26px;overflow-x:auto;-webkit-overflow-scrolling:touch}
.paper table{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff;
  table-layout:auto;min-width:520px}
.paper th,.paper td{border:1px solid #DFDBD4;padding:9px 12px;text-align:left;vertical-align:top}
.paper thead th{background:#3E4A43;color:#F2F5F3;font-weight:700;white-space:nowrap}
.paper tbody tr:nth-child(even){background:#FAF9F7}
.paper td.num{text-align:right;font-variant-numeric:tabular-nums}
.cap{font-size:12.5px;color:#8A9096;margin:-18px 0 26px}

/* callout */
.note{border-left:4px solid #C7A76A;background:#FBF7EF;padding:15px 20px;margin:0 0 24px;
  font-size:15px;color:#5A5040}
.note b{color:#7A6430}

/* FAQ */
.faq{margin:44px 0 0;border-top:2px solid #E4E0DA;padding-top:8px}
.faq details{border-bottom:1px solid #E9E5DE;padding:4px 0}
.faq details[open] summary{color:#0A6B3C}
.faq summary{cursor:pointer;padding:15px 30px 15px 4px;font-weight:700;color:#1F2528;
  font-size:16.5px;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:13px;font-size:21px;
  color:var(--sage-d);font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 4px 16px;color:var(--ink2)}
.faq .a p{margin:0 0 12px}
.faq .a p:last-child{margin:0}

/* related */
.rel{margin:36px 0 0;border-top:2px solid #E4E0DA;padding-top:22px}
.rel b{display:block;font-size:15px;color:#1F2528;margin:0 0 13px}
.rel ul{list-style:none;margin:0;padding:0;display:grid;
  grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:9px}
.rel li{margin:0}
.rel a{display:block;padding:11px 14px;background:#FBFAF8;border:1px solid #E7E3DC;
  border-radius:3px;color:#2B3034;text-decoration:none;font-size:14.5px;line-height:1.5}
.rel a:hover{background:#EDF3EE;border-color:#C6DACD}
.rel a s{display:block;text-decoration:none;font-size:11.5px;color:#96A29A;margin-top:2px}

/* CTA */
.cta{margin:34px 0 0;background:linear-gradient(135deg,#3E4A43,#2E3438);border-radius:3px;
  padding:30px 34px;color:#E7EAE8}
.cta b{display:block;font-size:20px;color:#fff;margin:0 0 8px}
.cta p{margin:0 0 18px;color:#B8C2BB;font-size:15px}
.cta a{display:inline-block;background:var(--sage);color:#1F2528;font-weight:700;
  padding:12px 30px;border-radius:2px;text-decoration:none;font-size:15.5px}
.cta a:hover{background:#98C6A7;text-decoration:none}

/* hub cards */
.hub{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;margin:0 0 34px}
.hub a{display:block;background:var(--bg2);border:1px solid var(--line2);border-radius:3px;
  padding:18px 20px;color:#D6DAD7;text-decoration:none}
.hub a:hover{border-color:var(--sage-d);background:#333A3D;text-decoration:none}
.hub a strong{display:block;color:#F0F2F0;font-size:17px;margin:0 0 6px;font-weight:700}
.hub a span{display:block;font-size:13.5px;color:#9AA29C;line-height:1.65}
.hubcat{margin:0 0 10px;font-size:12px;color:var(--sage);letter-spacing:1.5px}
.hubh2{font-size:20px;color:#EDEDED;margin:34px 0 14px;padding-left:12px;border-left:4px solid var(--sage)}

/* ---------- footer ---------- */
.gf{background:var(--bg2);border-top:1px solid var(--line2);margin-top:44px}
.gf-in{max-width:var(--max);margin:0 auto;padding:32px 16px;
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:26px;font-size:13.5px;color:#9AA0A5}
.gf b{display:block;color:#D6DAD7;font-size:13px;letter-spacing:1.5px;margin:0 0 11px}
.gf ul{list-style:none;margin:0;padding:0}
.gf li{margin:0 0 6px}
.gf a{color:#9AA0A5}
.gf a:hover{color:var(--sage)}
.gf-cr{border-top:1px solid var(--line2);text-align:center;padding:14px 16px;
  font-size:12px;color:#767C81}

@media(max-width:860px){
  .paper{padding:26px 20px 32px}
  .paper h1{font-size:25px}
  .paper h2{font-size:20px}
  .toc ol{columns:1}
  .gf-in{grid-template-columns:1fr}
  .gh nav a{padding:6px 8px}
  .gh nav a i{font-size:12.5px}
  .sect u{font-size:21px}
}