/* layout: signage-like — black type, logo red as the single accent, one hazard stripe at the very top */
:root{
  --ink:#16191d; --ink-2:#4a4f57; --muted:#80858d;
  --paper:#f6f5f2; --white:#fff; --line:#e3e0d9;
  --red:#c8312b; --red-d:#9f241f; --red-l:#fbeceb;
  --hazard:#f2c230;
  --radius:8px; --wrap:1180px;
  --sans:"Noto Sans TC",-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.85;letter-spacing:.02em}
img{max-width:100%;height:auto;display:block}
a{color:var(--red);text-underline-offset:3px}
a:hover{color:var(--red-d)}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.skip{position:absolute;left:-999px;top:0;background:#000;color:#fff;padding:8px 12px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--hazard);outline-offset:2px}

.hazard{height:8px;background:repeating-linear-gradient(-45deg,var(--hazard) 0 14px,var(--ink) 14px 28px)}
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:16px}
.brand img{height:46px;width:auto}
.menu{list-style:none;margin:0;padding:0;display:flex;gap:2px}
.menu a{display:block;padding:9px 12px;color:var(--ink);text-decoration:none;font-size:15.5px;font-weight:500;border-radius:6px;white-space:nowrap}
.menu a:hover{background:var(--red-l);color:var(--red-d)}
.menu li.active>a{color:var(--red);box-shadow:inset 0 -3px 0 var(--red);border-radius:0}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px;padding:10px;cursor:pointer}
.nav-toggle span{display:block;height:2px;background:var(--ink);margin:5px 0;transition:.2s}

/* hero */
.hero{background:#fff;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center;padding-top:56px;padding-bottom:56px}
.eyebrow{font-size:13px;letter-spacing:.14em;color:var(--red);font-weight:700;margin:0 0 14px}
.hero h1{font-size:clamp(38px,5.4vw,64px);line-height:1.15;font-weight:900;margin:0 0 20px;letter-spacing:.04em}
.hero-lead{color:var(--ink-2);margin:0 0 28px;max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:10px}
.hero-banner img{border-radius:var(--radius);box-shadow:0 18px 40px rgba(20,22,26,.14)}

.btn{display:inline-block;padding:11px 22px;border-radius:6px;border:2px solid var(--ink);color:var(--ink);text-decoration:none;font-weight:700;font-size:15.5px;line-height:1.4;margin:4px 6px 4px 0;background:#fff;transition:.15s}
.btn:hover{background:var(--ink);color:#fff}
.btn-primary{background:var(--red);border-color:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-d);border-color:var(--red-d);color:#fff}

/* quick tiles */
.quick{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:-1px;padding-top:36px;padding-bottom:12px}
.tile{position:relative;display:block;background:#fff;border:1px solid var(--line);border-top:4px solid var(--ink);border-radius:var(--radius);padding:20px 22px 22px;text-decoration:none;color:var(--ink);transition:.15s}
.tile:hover{border-top-color:var(--red);transform:translateY(-2px);box-shadow:0 12px 26px rgba(20,22,26,.08);color:var(--ink)}
.tile h3{margin:0 0 6px;font-size:19px;font-weight:900}
.tile p{margin:0;color:var(--ink-2);font-size:14.5px;line-height:1.7}
.tile span{position:absolute;right:18px;top:18px;color:var(--red);font-weight:700}

/* sections */
.sec{font-size:26px;font-weight:900;margin:48px 0 20px;letter-spacing:.06em;display:flex;align-items:center;gap:12px}
.sec::before{content:"";width:10px;height:26px;background:var(--red)}
.sec-row{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.sec-row a{text-decoration:none;font-weight:700;font-size:15px}
.band{background:#fff;border-top:1px solid var(--line);margin-top:56px;padding:24px 0 8px}

/* bookshelf */
.shelf{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:28px 22px;padding-bottom:24px}
.book{display:flex;flex-direction:column;min-width:0}
.book-cover{display:block;background:#fff;border:1px solid var(--line);border-radius:4px;padding:10px;transition:.18s}
.book-cover img{width:100%;height:auto;aspect-ratio:5/7;object-fit:contain}
.book-cover:hover{border-color:var(--red);transform:translateY(-3px)}
.book-meta{padding-top:12px;display:flex;flex-direction:column;flex:1}
.ed{align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--red);border:1.5px solid var(--red);border-radius:4px;padding:1px 7px;margin-bottom:6px}
.book h3{font-size:15.5px;line-height:1.55;margin:0 0 10px;font-weight:700;flex:1}
.buy-row{display:flex;gap:8px;flex-wrap:wrap}
.buy{font-size:14px;font-weight:700;text-decoration:none;color:#fff;background:var(--ink);padding:6px 12px;border-radius:5px}
.buy:hover{background:var(--red);color:#fff}
.buy.alt{background:#fff;color:var(--ink);border:1.5px solid var(--ink);padding:4.5px 10.5px}

/* authors */
.authors{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:18px;padding-bottom:20px}
.author{text-decoration:none;color:var(--ink);text-align:center;font-weight:700}
.author .ph{aspect-ratio:1;border-radius:50%;overflow:hidden;background:#e9e6df;border:3px solid #fff;box-shadow:0 0 0 1px var(--line);margin-bottom:8px}
.author .ph img{width:100%;height:100%;object-fit:cover}
.author:hover .ph{box-shadow:0 0 0 3px var(--red)}
.author:hover{color:var(--red)}

/* page head */
.page-head{background:var(--ink);color:#fff;padding:40px 0 36px;position:relative}
.page-head::after{content:"";position:absolute;left:0;right:0;bottom:0;height:5px;background:var(--red)}
.page-head h1{font-size:clamp(28px,4vw,40px);font-weight:900;margin:6px 0 0;letter-spacing:.06em;line-height:1.3}
.page-head .lead{margin:12px 0 0;color:#cfd2d6;max-width:46em}
.crumbs{font-size:13.5px;color:#aab0b8}
.crumbs a{color:#fff;text-decoration:none}
.crumbs span{margin:0 6px;opacity:.6}
.subnav{background:#fff;border-bottom:1px solid var(--line)}
.subnav .wrap{display:flex;gap:4px;overflow-x:auto;padding-top:8px;padding-bottom:8px}
.subnav a{flex:none;padding:6px 12px;border-radius:999px;text-decoration:none;color:var(--ink-2);font-size:15px}
.subnav a[aria-current]{background:var(--ink);color:#fff;font-weight:700}

/* prose */
.prose{max-width:900px;padding-top:40px;padding-bottom:64px;overflow-wrap:anywhere}
.band .prose{padding-top:16px}
.prose h2{font-size:24px;font-weight:900;line-height:1.5;margin:44px 0 14px;letter-spacing:.04em}
.prose h2.center{text-align:center}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:19px;margin:30px 0 10px}
.prose p{margin:0 0 18px}
.prose p.center{text-align:center}
.prose hr{border:0;border-top:1px solid var(--line);margin:40px 0}
.prose figure{margin:24px 0}
.prose figure img{border-radius:6px;margin:0 auto}
.prose figcaption{font-size:14px;color:var(--muted);text-align:center;margin-top:8px}
.prose ul,.prose ol{padding-left:1.4em}
.cols{display:grid;gap:28px;margin:24px 0}
.cols-2{grid-template-columns:1fr 1fr}
.cols-3{grid-template-columns:repeat(3,1fr)}
.cols-4{grid-template-columns:repeat(4,1fr)}
.col{min-width:0}
.col>*:first-child{margin-top:0}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:8px;margin:20px 0 28px}
.gallery-few{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.gallery .g-item{display:block;aspect-ratio:4/3;overflow:hidden;border-radius:6px;background:#e9e6df}
.gallery .g-item img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.gallery .g-item:hover img{transform:scale(1.04)}
.video,.map,.embed{position:relative;margin:24px 0;border-radius:8px;overflow:hidden;background:#000}
.video{aspect-ratio:16/9}
.embed{height:600px;background:#fff;border:1px solid var(--line)}
.video iframe,.map iframe,.embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.pdf-embed{height:min(80vh,820px);margin:20px 0 10px;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}
.pdf-embed iframe{width:100%;height:100%;border:0}
.file-card{display:flex;align-items:center;gap:14px;padding:12px 16px;margin:10px 0;background:#fff;border:1px solid var(--line);border-left:4px solid var(--ink);border-radius:6px;text-decoration:none;color:var(--ink)}
.file-card:hover{border-left-color:var(--red);color:var(--ink)}
.f-ext{flex:none;font-size:12px;font-weight:900;letter-spacing:.06em;color:#fff;background:var(--red);border-radius:4px;padding:5px 8px;min-width:46px;text-align:center}
.f-name{flex:1;word-break:break-all;line-height:1.5;min-width:0}
.f-size{flex:none;font-size:13px;color:var(--muted)}
.table-wrap{overflow-x:auto;margin:20px 0}
.table-wrap table{border-collapse:collapse;width:100%;background:#fff}
.table-wrap td{border:1px solid var(--line);padding:8px 12px;vertical-align:top}
.contact-card{background:var(--red-l);border-radius:var(--radius);padding:22px 24px;margin:28px 0}
.contact-card h3{margin-top:0}

/* footer */
.site-footer{background:var(--ink);color:#c3c7cc;font-size:15px;padding:48px 0 22px;margin-top:0}
.site-footer a{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1.2fr;gap:36px}
.site-footer h4{color:#fff;margin:0 0 10px;font-size:15px;letter-spacing:.1em}
.f-logo{background:#fff;padding:6px 10px;border-radius:6px;height:58px;width:auto;margin-bottom:12px}
.copy{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:16px;font-size:13px;color:#8d939b}

/* lightbox */
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(10,12,14,.94);display:flex;align-items:center;justify-content:center}
.lightbox[hidden]{display:none}
.lightbox img{max-width:92vw;max-height:88vh;width:auto;border-radius:4px}
.lightbox button{position:absolute;background:none;border:0;color:#fff;font-size:44px;line-height:1;cursor:pointer;padding:16px;opacity:.85}
.lb-close{top:8px;right:12px}
.lb-prev{left:6px;top:50%;transform:translateY(-50%)}
.lb-next{right:6px;top:50%;transform:translateY(-50%)}

@media (max-width:1000px){
  .nav-toggle{display:block}
  .site-nav{position:fixed;inset:80px 0 0 0;background:#fff;overflow-y:auto;padding:12px 16px 40px;display:none}
  .nav-open .site-nav{display:block}
  .nav-open{overflow:hidden}
  .nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-open .nav-toggle span:nth-child(2){opacity:0}
  .nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .menu{flex-direction:column}
  .menu a{font-size:17px;padding:14px 10px;border-bottom:1px solid var(--line);border-radius:0}
  .menu li.active>a{box-shadow:inset 4px 0 0 var(--red)}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .quick{grid-template-columns:1fr 1fr}
  .cols-2,.cols-3,.cols-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:560px){
  body{font-size:16px}
  .brand img{height:38px}
  .hero-grid{padding-top:36px;padding-bottom:36px}
  .quick{grid-template-columns:1fr;padding-top:24px}
  .shelf{grid-template-columns:1fr 1fr;gap:22px 14px}
  .book-cover{padding:6px}
  .book h3{font-size:14.5px}
  .authors{grid-template-columns:repeat(3,1fr);gap:12px}
  .gallery{grid-template-columns:repeat(2,1fr);gap:6px}
  .prose h2{font-size:21px}
  .embed{height:480px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

.split{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start;padding-top:28px;padding-bottom:56px}
.split p{color:var(--ink-2)}
.sec.plain{margin-top:0}
.info-box{background:var(--paper);border:1px solid var(--line);border-top:4px solid var(--red);border-radius:var(--radius);padding:24px 26px}
.info-box h3{margin:0 0 8px;font-size:20px;font-weight:900}
@media (max-width:1000px){.split{grid-template-columns:1fr;gap:24px}}

.prose img.law-cover{max-width:300px;margin:8px auto;border:1px solid var(--line);border-radius:4px}

/* slideshow for large galleries */
.carousel{margin:20px 0 30px;outline:none}
.cr-stage{position:relative;background:#16181b;border-radius:8px;overflow:hidden}
.cr-track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.cr-track::-webkit-scrollbar{display:none}
.cr-slide{flex:0 0 100%;scroll-snap-align:start;aspect-ratio:3/2;display:flex;align-items:center;justify-content:center}
.cr-slide a.g-item{display:block;width:100%;height:100%;aspect-ratio:auto;background:none;border-radius:0}
.cr-slide img{width:100%;height:100%;object-fit:contain;transform:none!important}
.cr-btn{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;border:0;background:rgba(255,255,255,.88);color:#16181b;font-size:28px;line-height:1;cursor:pointer;display:grid;place-items:center;box-shadow:0 2px 10px rgba(0,0,0,.25)}
.cr-btn:hover{background:#fff}
.cr-prev{left:12px}.cr-next{right:12px}
.cr-count{position:absolute;right:12px;bottom:10px;background:rgba(0,0,0,.55);color:#fff;font-size:13px;padding:3px 10px;border-radius:999px;letter-spacing:.05em}
.cr-thumbs{display:flex;gap:6px;overflow-x:auto;padding:8px 0 4px;scrollbar-width:thin}
.cr-thumb{flex:0 0 auto;width:84px;height:60px;padding:0;border:2px solid transparent;border-radius:4px;overflow:hidden;cursor:pointer;opacity:.6;background:#ddd}
.cr-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.cr-thumb.on{opacity:1;border-color:currentColor}
.cr-thumb:hover{opacity:1}
@media (max-width:560px){.cr-btn{width:36px;height:36px;font-size:22px}.cr-thumb{width:64px;height:46px}}

/* 書籍封面＋檔案卡（資源下載、勘誤表） */
.book-files{display:grid;grid-template-columns:minmax(0,1fr);gap:16px;margin:24px 0}
.book-file{display:flex;gap:18px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;min-width:0}
.prose .book-file .g-item.bf-cover{flex:0 0 120px;width:120px;height:auto;aspect-ratio:auto;background:#fff;border:1px solid var(--line);border-radius:4px;overflow:hidden}
.prose .book-file .g-item.bf-cover img{display:block;width:100%;height:auto;object-fit:contain;border-radius:0;margin:0}
.prose .book-file .g-item.bf-cover:hover img{transform:none}
.book-file .bf-body{flex:1;min-width:0}
.prose .book-file h3{font-size:16px;line-height:1.5;margin:0 0 2px}
.prose .book-file .bf-sub{font-size:13.5px;color:var(--muted);margin:0 0 6px}
.book-file .file-card{margin:8px 0;padding:10px 12px;gap:10px}
.book-file .f-name{overflow-wrap:anywhere;font-size:15px;line-height:1.5}
@media (max-width:560px){.book-file{display:grid;grid-template-columns:76px minmax(0,1fr);grid-template-rows:auto 1fr;column-gap:14px;row-gap:0;padding:14px}.book-file .bf-body{display:contents}.prose .book-file .g-item.bf-cover{width:76px;grid-row:1 / span 2;align-self:start;margin-bottom:10px}.prose .book-file h3,.prose .book-file .bf-sub{grid-column:2;align-self:start}.book-file .file-card{grid-column:1 / -1}}