/* ============================================================
   匠域文章區共用樣式 — 沿用首頁的和紙設計系統
   單一主題（和紙淺色），與 index.html tokens 一致
   ============================================================ */
:root{
  --washi:    #f8f5ee;
  --washi-2:  #efe9db;
  --card:     #fbf9f3;
  --ink:      #262119;
  --ink-soft: #6b6355;
  --line:     rgba(38,34,29,.18);
  --line-soft:rgba(38,34,29,.10);
  --indigo:   #3d5573;
  --moss:     #6f7f58;
  --copper:   #b3763e;
  --serif: "Noto Serif TC", "PMingLiU", serif;
  --sans:  "Noto Sans TC", "Microsoft JhengHei", sans-serif;
}
*{ margin:0; padding:0; box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *, *::before, *::after{ animation:none !important; transition:none !important; }
}
body{
  background:
    radial-gradient(130% 80% at 50% 0%, rgba(255,255,255,.38), rgba(255,255,255,0) 55%),
    var(--washi);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
/* 和紙紙紋 */
body::after{
  content:""; position:fixed; inset:0; z-index:60; pointer-events:none;
  opacity:.05; mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='p'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23p)' opacity='0.6'/%3E%3C/svg%3E");
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1, h2, h3, .brand{ font-feature-settings:"palt" 1; }
::selection{ background:rgba(61,85,115,.22); }
::-webkit-scrollbar{ width:11px; }
::-webkit-scrollbar-track{ background:var(--washi-2); }
::-webkit-scrollbar-thumb{
  background:rgba(38,34,29,.28); border-radius:6px;
  border:3px solid var(--washi-2);
}
::-webkit-scrollbar-thumb:hover{ background:rgba(38,34,29,.42); }
:focus-visible{
  outline:2px solid var(--indigo); outline-offset:3px; border-radius:2px;
}

.wrap{ max-width:1160px; margin:0 auto; padding:0 32px; }

/* ---------- nav（與首頁一致） ---------- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:50;
  height:66px; display:flex; align-items:center;
  background:rgba(248,245,238,.88);
  backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-soft);
}
.nav-inner{
  width:100%; padding:0 clamp(28px, 5.5vw, 84px);
  display:flex; align-items:center; justify-content:space-between;
}
.brand{ display:flex; align-items:center; }
.brand img{ height:38px; width:auto; display:block; }
.nav-links{ display:flex; gap:34px; }
.nav-links a{
  position:relative;
  font-size:.87rem; color:var(--ink-soft); letter-spacing:.1em;
  padding-bottom:5px;
  transition:color .25s ease;
}
.nav-links a::after{
  content:""; position:absolute; left:0; bottom:0;
  width:100%; height:1px; background:var(--ink);
  transform:scaleX(0); transform-origin:left;
  transition:transform .4s cubic-bezier(.16,1,.3,1);
}
.nav-links a:hover{ color:var(--ink); }
.nav-links a:hover::after{ transform:scaleX(1); }
.nav-links a.on{ color:var(--ink); }
.nav-links a.on::after{ transform:scaleX(1); }

/* ---------- 頁首區塊 ---------- */
.page-head{ padding:clamp(120px, 13vw, 172px) 0 clamp(40px, 4.4vw, 62px); }
.sec-mark{ display:flex; align-items:center; gap:12px; margin-bottom:22px; }
.sec-mark .k-num{
  font-family:var(--serif); font-size:.78rem; font-weight:600;
  letter-spacing:.24em; color:var(--ink-soft);
}
.sec-mark .k-line{ width:44px; height:1px; background:var(--ink); opacity:.55; }
.sec-mark .k-dot{ width:4px; height:4px; border-radius:50%; background:var(--ink); opacity:.6; }
.sec-mark .k-label{ font-size:.78rem; letter-spacing:.3em; color:var(--ink-soft); }
.page-head h1{
  font-family:var(--serif); font-weight:700;
  font-size:clamp(1.7rem, 3.3vw, 2.55rem);
  line-height:1.45; letter-spacing:.03em;
  text-wrap:balance;
}
.page-head .lead{ color:var(--ink-soft); font-size:.93rem; margin-top:14px; }

/* ---------- 文章列表 ---------- */
.alist{
  padding-bottom:clamp(80px, 9vw, 128px);
  border-top:1px solid var(--line);
}
.aitem{
  display:grid; grid-template-columns:minmax(0, 8.4em) minmax(0, 1fr);
  gap:clamp(24px, 3.4vw, 56px);
  padding:clamp(30px, 3.4vw, 44px) 0;
  border-bottom:1px solid var(--line-soft);
  transition:background .3s ease;
}
.aitem:hover{ background:rgba(38,34,29,.022); }
.aitem-meta{ padding-top:5px; }
.aitem-date{
  font-family:var(--serif); font-size:.78rem; font-weight:600;
  letter-spacing:.14em; color:var(--ink-soft);
  font-variant-numeric:tabular-nums;
}
.aitem-cat{
  display:block; margin-top:8px;
  font-size:.7rem; letter-spacing:.18em; color:var(--indigo);
}
.aitem h2{
  font-family:var(--serif); font-weight:700;
  font-size:clamp(1.14rem, 1.7vw, 1.36rem);
  line-height:1.55; letter-spacing:.03em;
  transition:color .25s ease;
}
.aitem:hover h2{ color:var(--indigo); }
.aitem p{
  color:var(--ink-soft); font-size:.89rem; margin-top:10px; max-width:42em;
}
.aitem-more{
  display:inline-block; margin-top:14px;
  font-size:.8rem; letter-spacing:.1em; color:var(--ink);
  border-bottom:1px solid var(--line); padding-bottom:3px;
}
.aitem-more i{ font-style:normal; margin-left:7px; display:inline-block;
  transition:transform .3s cubic-bezier(.16,1,.3,1); }
.aitem:hover .aitem-more i{ transform:translateX(5px); }
.alist-empty{
  padding:60px 0 90px; color:var(--ink-soft); font-size:.9rem;
}

/* ---------- 文章內頁（單欄置中，避免整頁偏左） ---------- */
.article{ padding-bottom:clamp(70px, 8vw, 110px); }
.article-head{
  padding:clamp(112px, 12vw, 158px) 0 clamp(30px, 3.4vw, 46px);
  border-bottom:1px solid var(--line);
}
.article-head .wrap, .article .wrap{ max-width:712px; }
.article-back{
  display:inline-block; margin-bottom:26px;
  font-size:.8rem; letter-spacing:.1em; color:var(--ink-soft);
  transition:color .25s ease;
}
.article-back:hover{ color:var(--ink); }
.article-cat{
  font-size:.72rem; letter-spacing:.22em; color:var(--indigo);
  margin-bottom:14px;
}
.article-head h1{
  font-family:var(--serif); font-weight:700;
  font-size:clamp(1.62rem, 3.1vw, 2.35rem);
  line-height:1.5; letter-spacing:.03em;
  text-wrap:balance;
}
.article-date{
  margin-top:20px; font-family:var(--serif);
  font-size:.78rem; font-weight:600; letter-spacing:.14em; color:var(--ink-soft);
  font-variant-numeric:tabular-nums;
}

/* 內文排版 */
.prose{ padding-top:clamp(36px, 4vw, 54px); }
.prose > * + *{ margin-top:1.5em; }
.prose p{ color:#453f34; font-size:1rem; line-height:2.05; }
.prose h2{
  font-family:var(--serif); font-weight:700;
  font-size:1.32rem; line-height:1.6; letter-spacing:.03em;
  margin-top:2.6em; padding-top:.9em;
  border-top:1px solid var(--line-soft);
}
.prose h3{
  font-family:var(--serif); font-weight:700;
  font-size:1.08rem; line-height:1.6; letter-spacing:.04em;
  margin-top:2em;
}
.prose ul, .prose ol{ padding-left:0; list-style:none; }
.prose li{
  position:relative; padding-left:1.5em;
  color:#453f34; line-height:2.05;
}
.prose li + li{ margin-top:.5em; }
.prose ul li::before{
  content:"・"; position:absolute; left:.2em; color:var(--ink);
}
.prose ol{ counter-reset:pl; }
.prose ol li{ counter-increment:pl; }
.prose ol li::before{
  content:counter(pl, decimal-leading-zero);
  position:absolute; left:0; top:0;
  font-family:var(--serif); font-size:.76rem; font-weight:600;
  letter-spacing:.08em; color:var(--ink-soft); line-height:2.7;
}
.prose blockquote{
  border-left:2px solid var(--copper);
  padding:.2em 0 .2em 1.5em;
  color:var(--ink); font-family:var(--serif);
  font-size:1.06rem; line-height:1.95;
}
.prose strong{ color:var(--ink); font-weight:600; }
.prose figure{
  margin-top:2.8em; margin-bottom:2.8em;
  margin-left:calc(-1 * clamp(0px, 3vw, 44px));
  margin-right:calc(-1 * clamp(0px, 3vw, 44px));
}
.prose figure img{
  width:100%; border:1px solid var(--line-soft); border-radius:2px;
  background:var(--card);
}
.prose figcaption{
  margin-top:12px; font-size:.78rem; color:var(--ink-soft);
  letter-spacing:.04em; line-height:1.8;
  padding-left:clamp(0px, 3vw, 44px);
}
.prose a:not(.btn){
  color:var(--indigo); border-bottom:1px solid rgba(61,85,115,.4);
  padding-bottom:1px; transition:opacity .25s ease;
}
.prose a:not(.btn):hover{ opacity:.7; }
.prose table{
  width:100%; border-collapse:collapse; font-size:.88rem;
}
.prose th, .prose td{
  text-align:left; padding:10px 14px 10px 0;
  border-bottom:1px solid var(--line-soft);
  color:var(--ink-soft); line-height:1.85;
}
.prose th{ color:var(--ink); font-weight:600; letter-spacing:.1em; font-size:.78rem; }
.prose-scroll{ overflow-x:auto; }

/* 相關文章 */
.article-rel{
  margin-top:clamp(52px, 5.6vw, 78px);
  padding-top:clamp(26px, 2.8vw, 34px);
  border-top:1px solid var(--line);
}
.article-rel > b{
  display:block; font-size:.72rem; font-weight:600;
  letter-spacing:.22em; color:var(--ink-soft); margin-bottom:18px;
}
.rel-list{ display:grid; gap:2px; }
.rel-item{
  display:block; padding:14px 0;
  border-bottom:1px solid var(--line-soft);
  transition:padding-left .3s cubic-bezier(.16,1,.3,1);
}
.rel-item:hover{ padding-left:8px; }
.rel-cat{
  display:block; font-size:.7rem; letter-spacing:.18em;
  color:var(--indigo); margin-bottom:4px;
}
.rel-t{
  font-family:var(--serif); font-size:1rem; font-weight:700;
  letter-spacing:.03em; line-height:1.6;
}
.rel-item:hover .rel-t{ color:var(--indigo); }

/* 文末 CTA */
.article-cta{
  margin-top:clamp(56px, 6vw, 84px);
  padding:clamp(30px, 3.4vw, 44px);
  background:var(--card); border:1px solid var(--line); border-radius:2px;
}
.article-cta b{
  display:block; font-family:var(--serif); font-size:1.14rem; font-weight:700;
  letter-spacing:.04em; margin-bottom:10px;
}
.article-cta p{ color:var(--ink-soft); font-size:.88rem; margin-bottom:22px; }
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  height:50px; padding:0 32px; border-radius:999px;
  font-family:var(--sans); font-size:.92rem; letter-spacing:.12em;
  cursor:pointer; white-space:nowrap;
  background:var(--ink); color:var(--washi); font-weight:500;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.13), 0 4px 18px rgba(38,34,29,.18);
  transition:transform .25s cubic-bezier(.16,1,.3,1), box-shadow .25s ease;
}
.btn:hover{ transform:translateY(-2px); box-shadow:0 8px 26px rgba(38,34,29,.24); }
.btn:active{ transform:scale(.98); }

/* ---------- LINE 浮動鈕 ---------- */
.line-fab{
  position:fixed; right:clamp(16px, 2.4vw, 30px); bottom:clamp(16px, 2.4vw, 30px);
  z-index:70;
  width:54px; height:54px; border-radius:50%;
  background:#06C755;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 8px 24px rgba(6,199,85,.35);
  transition:transform .3s cubic-bezier(.16,1,.3,1), box-shadow .3s ease;
}
.line-fab:hover{ transform:translateY(-3px); box-shadow:0 12px 30px rgba(6,199,85,.45); }
.line-fab span{
  color:#fff; font-weight:700; font-size:.68rem; letter-spacing:.06em;
  font-family:Arial, var(--sans);
}

/* ---------- footer（與首頁一致） ---------- */
footer{ border-top:1px solid var(--line-soft); padding:44px 0 34px; }
.footer-top{
  display:flex; justify-content:space-between; align-items:flex-start; gap:28px; flex-wrap:wrap;
  padding-bottom:26px; margin-bottom:24px;
  border-bottom:1px solid var(--line-soft);
}
.footer-brand b{
  font-family:var(--serif); font-size:1rem; font-weight:700; letter-spacing:.08em;
  display:block; margin-bottom:6px;
}
.footer-brand p{ color:var(--ink-soft); font-size:.82rem; letter-spacing:.06em; max-width:44em; }
.footer-meta{
  display:flex; gap:34px; flex-wrap:wrap;
  color:var(--ink-soft); font-size:.8rem; letter-spacing:.06em;
}
.footer-meta b{
  display:block; font-weight:600; color:var(--ink);
  font-size:.7rem; letter-spacing:.24em; margin-bottom:4px;
}
.footer-meta a{ transition:color .25s ease; }
.footer-meta a:hover{ color:var(--indigo); }
.footer-inner{
  display:flex; justify-content:space-between; align-items:center; gap:16px; flex-wrap:wrap;
  color:var(--ink-soft); font-size:.78rem; letter-spacing:.08em;
}

/* ---------- 進場 ---------- */
.reveal{
  opacity:0; transform:translateY(26px);
  transition:opacity .9s cubic-bezier(.16,1,.3,1), transform .9s cubic-bezier(.16,1,.3,1);
}
.reveal.visible{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){ .reveal{ opacity:1; transform:none; } }

/* ---------- RWD ---------- */
@media (max-width: 720px){
  .wrap, .nav-inner{ padding:0 22px; }
  .nav-links{ gap:20px; }
  .nav-links a:nth-child(n+3){ display:none; }
  .aitem{ grid-template-columns:1fr; gap:12px; }
  .aitem-meta{ display:flex; align-items:baseline; gap:16px; padding-top:0; }
  .aitem-cat{ margin-top:0; }
  .prose{ max-width:none; }
}