/* Penlulu stationery — main stylesheet */
@font-face{
  font-family:'PenluluCute';
  src:url('/fonts/zen-maru-gothic-700.ttf') format('truetype');
  font-weight:700;font-style:normal;font-display:swap;
}
:root{
  --bg:#fbf7ef; --bg-soft:#f4ede0; --card:#ffffff; --ink:#26262b; --ink-soft:#4a4a52;
  --muted:#7c766c; --line:#e7ddcc; --primary:#1f6f6b; --primary-d:#175754; --primary-soft:#e3f0ee;
  --accent:#c2632c; --gold:#b8862f; --rose:#8a3b5e;
  --shadow:0 6px 24px rgba(60,45,20,.08); --shadow-sm:0 2px 8px rgba(60,45,20,.06);
  --radius:16px; --radius-sm:10px; --maxw:1240px;
  --font:"Microsoft JhengHei","PingFang TC","Noto Sans TC",system-ui,sans-serif;
  --serif:"Microsoft JhengHei","PingFang TC",Georgia,serif;
}
[data-theme="dark"]{
  --bg:#161b1a; --bg-soft:#1d2423; --card:#222a29; --ink:#e9eceb; --ink-soft:#c4cac8;
  --muted:#8d9694; --line:#31403e; --primary:#4aa8a3; --primary-d:#358c87; --primary-soft:#223433;
  --accent:#e08a54; --shadow:0 6px 24px rgba(0,0,0,.4); --shadow-sm:0 2px 8px rgba(0,0,0,.3);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.8;font-size:16px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{line-height:1.35;color:var(--ink);font-weight:700}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.skip-link{position:absolute;left:-999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;z-index:200;border-radius:0 0 10px 0}
.skip-link:focus{left:0}

/* ---------- header / megamenu ---------- */
.site-header{position:sticky;top:0;z-index:100;background:var(--card);border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;gap:18px;height:68px}
.brand{display:flex;flex-direction:column;line-height:1.25;flex-shrink:0}
.brand img{height:44px;width:auto}
.brand .b-main{font-weight:800;font-size:16px;color:var(--ink)}
.brand .b-sub{font-size:11px;color:var(--primary);letter-spacing:.5px}
.main-nav{display:flex;gap:0;margin-left:auto}
.nav-item{position:relative}
.nav-item>a,.nav-item>button{display:flex;align-items:center;gap:4px;background:none;border:none;font:inherit;font-size:14.5px;font-weight:600;white-space:nowrap;color:var(--ink-soft);padding:9px 9px;border-radius:10px;cursor:pointer}
.nav-item>a:hover,.nav-item>button:hover,.nav-item.open>button{background:var(--primary-soft);color:var(--primary);text-decoration:none}
.caret{font-size:10px;opacity:.7}
.mega{position:absolute;top:100%;left:0;min-width:520px;max-width:640px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 18px;display:none;flex-direction:column;gap:12px;z-index:90}
.nav-item.open .mega{display:flex}
.mega-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;border-bottom:1px solid var(--line);padding-bottom:8px}
.mega-head strong{font-size:15px;color:var(--ink)}
.mega-head span{font-size:11.5px;color:var(--muted)}
.mega-cats{display:grid;gap:8px}
.mega-cats.c3{grid-template-columns:repeat(3,1fr)}
.mega-cats.c2{grid-template-columns:repeat(2,1fr)}
.mega-cat{display:flex;flex-direction:column;gap:3px;padding:9px 11px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--card)}
.mega-cat:hover{border-color:var(--primary);background:var(--primary-soft);text-decoration:none}
.mega-cat .mc-title{font-size:13.5px;font-weight:700;color:var(--ink);line-height:1.3}
.mega-cat:hover .mc-title{color:var(--primary-d)}
.mega-cat .mc-desc{font-size:11.5px;color:var(--muted);line-height:1.45}
.mega-foot{border-top:1px solid var(--line);padding-top:9px;font-size:13px}
/* 單例 mega-panel */
.mega-panel{position:absolute;z-index:120;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 18px;min-width:520px;max-width:680px}
.mega-panel .mega-inner{display:flex;flex-direction:column;gap:12px}
.mega-panel .mega-inner.wide{min-width:640px}
.mega-panel.mobile{position:static;min-width:0;max-width:none;box-shadow:none;border:none;padding:6px 0 10px}
.mega-all{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.mega-all-col{display:flex;flex-direction:column;gap:3px;border:1px solid var(--line);border-radius:var(--radius-sm);padding:9px 10px}
.mega-all-col .mac-pillar{font-size:13.5px;font-weight:700;color:var(--primary-d);margin-bottom:4px}
.mega-all-col a{font-size:12px;color:var(--ink-soft);padding:2px 4px;border-radius:6px}
.mega-all-col a:hover{background:var(--primary-soft)}
.footer-mega-btn{background:none;border:1px solid var(--line);border-radius:8px;padding:3px 10px;font:inherit;font-size:12.5px;cursor:pointer;color:var(--ink-soft)}
.footer-mega-btn:hover{border-color:var(--primary);color:var(--primary)}
.noscript-nav{background:var(--bg-soft);padding:14px 22px}
.noscript-nav ul{columns:2;font-size:13px}
.header-actions{display:flex;align-items:center;gap:8px;margin-left:8px}
.icon-btn{background:var(--bg-soft);border:none;width:40px;height:40px;border-radius:50%;font-size:17px;cursor:pointer;color:var(--ink);display:grid;place-items:center}
.icon-btn:hover{background:var(--primary-soft);color:var(--primary)}
.burger{display:none}

/* ---------- search overlay ---------- */
.search-overlay{position:fixed;inset:0;background:rgba(30,25,15,.45);z-index:300;display:none;align-items:flex-start;justify-content:center;padding:90px 16px}
.search-overlay.open{display:flex}
.search-box{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);width:min(720px,100%);overflow:hidden}
.search-input-row{display:flex;align-items:center;gap:10px;padding:16px 18px;border-bottom:1px solid var(--line)}
.search-input-row input{flex:1;border:none;background:none;font:inherit;font-size:17px;color:var(--ink);outline:none}
.suggest{max-height:50vh;overflow:auto}
.suggest a{display:flex;flex-direction:column;padding:11px 18px;border-bottom:1px solid var(--line)}
.suggest a:hover{background:var(--bg-soft);text-decoration:none}
.suggest .s-title{font-weight:600;font-size:15px}
.suggest .s-meta{font-size:12px;color:var(--muted)}
.suggest .s-empty{padding:18px;color:var(--muted)}
.search-hint{padding:10px 18px;font-size:12px;color:var(--muted)}

/* ---------- hero ---------- */
/* 滿版攝影 hero-banner */
/* hero：左文右圖雙欄，文字完全不遮人物與鋼筆 */
.hero-split{background:linear-gradient(135deg,#0e2033 0%,#14532d 42%,#1f6f6b 70%,#2b7a78 100%);min-height:520px;display:flex;align-items:center;padding:56px 0;overflow:hidden}
.hero-split-inner{display:flex;align-items:center;gap:44px;width:100%}
.hero-text{flex:1.05;max-width:600px;text-align:left;display:flex;flex-direction:column;align-items:flex-start}
.hero-text *{text-align:left}
.hero-text .hero-kicker{font-size:12.5px;letter-spacing:3px;font-weight:700;color:#a7f3d0;margin-bottom:18px}
.hero-text h1{font-size:40px;line-height:1.16;margin:0 0 24px;color:#fff;text-shadow:0 2px 14px rgba(0,0,0,.25)}
.h1-line1{display:block;font-size:.82em}
/* 鋼筆身世圖譜：黑藍色 ripple */
.h1-line2{display:block;font-size:1.06em;letter-spacing:2px;
  background:linear-gradient(120deg,#ffffff 0%,#93c5fd 18%,#2563eb 38%,#ffffff 50%,#3b82f6 66%,#bfdbfe 84%,#ffffff 100%);
  background-size:320% 100%;
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
  animation:rippleNeon 6s linear infinite}
@keyframes rippleNeon{0%{background-position:0% 50%}100%{background-position:320% 50%}}
.hero-text .hero-cta{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-start}
.hero-text .btn,.hero-text .btn.ghost.light{background:linear-gradient(135deg,#1d4ed8,#2563eb);border:none;color:#fff;box-shadow:0 4px 14px rgba(29,78,216,.35)}
.hero-text .btn:hover,.hero-text .btn.ghost.light:hover{background:linear-gradient(135deg,#1e40af,#1d4ed8)}
.hero-text .hero-sub{font-size:13px;line-height:1.75;color:#eef2ff;margin-top:30px;max-width:520px;opacity:.9;letter-spacing:.4px}
.hero-visual{flex:1;display:flex;justify-content:flex-end;align-items:center}
.hero-visual img{max-width:100%;max-height:470px;width:auto;height:auto;border-radius:22px;box-shadow:0 20px 55px rgba(0,0,0,.38);object-fit:contain}
/* hero 只放站名標題，其餘文字移到下一區 */
.hero-text .hero-brand-only{font-size:54px;line-height:1.1;margin:0}
.hero-intro{background:linear-gradient(rgba(255,255,255,.60),rgba(255,255,255,.60)),url('../../images/penlulu_stationery_card_fp-brands.webp') center/cover no-repeat;padding:52px 0 60px;border-bottom:1px solid var(--border)}
.hero-gap{background:var(--card);height:28px}
.hero-intro-head{max-width:700px;margin:0 auto;text-align:center;display:flex;flex-direction:column;align-items:center}
.hero-intro-head *{text-align:center}
.hero-intro-head .hero-kicker{color:#64748b;margin-bottom:14px}
.intro-line2{font-size:34px;margin:0 0 24px;line-height:1.2;font-weight:700;letter-spacing:2px;color:#1e3a8a}
.hero-intro-head .hero-cta{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-bottom:6px}
.hero-intro-head .hero-cta .btn,.hero-intro-head .hero-cta .btn.ghost.light{background:linear-gradient(135deg,#1d4ed8,#1f6f6b);border:none;color:#fff;box-shadow:0 4px 14px rgba(31,111,107,.35)}
.hero-intro-head .hero-cta .btn:hover,.hero-intro-head .hero-cta .btn.ghost.light:hover{background:linear-gradient(135deg,#1e40af,#175754)}
.hero-intro-head .hero-sub{margin:24px auto 0;font-size:13.5px;line-height:1.75;color:#475569;opacity:1;max-width:620px;text-align:center}
/* hero 滿版圖：標題置中放上、縮小、可愛可商用字型 */
.hero-content .hero-brand-only{font-size:36px;line-height:1.15;margin:0;font-family:'PenluluCute','Zen Maru Gothic','Noto Sans TC','Microsoft JhengHei',sans-serif;font-weight:700;letter-spacing:1px;text-shadow:0 2px 12px rgba(0,0,0,.35)}
/* hero 兩張滿版圖輪流播放（純 CSS 淡入淡出） */
.hero-carousel{position:absolute;inset:0}
.hero-slide{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;opacity:0}
.hero-slide.slide-1{animation:heroFade 12s ease-in-out infinite;animation-delay:-6s}
.hero-slide.slide-2{animation:heroFade 12s ease-in-out infinite;animation-delay:0s}
@keyframes heroFade{0%{opacity:0}12%{opacity:1}50%{opacity:1}62%{opacity:0}100%{opacity:0}}
.hero-search,.hero-search .hs-ico,.hero-search:hover{display:none}
.hero-banner{position:relative;overflow:hidden;min-height:520px;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(20,40,45,.55) 0%,rgba(20,40,45,.28) 42%,rgba(20,40,45,.05) 70%)}
.hero-content{position:relative;z-index:2;padding:40px clamp(20px,6vw,64px) 30px;color:#fff;width:100%;max-width:none;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;height:100%;box-sizing:border-box}
.hero-content *{text-align:center}
.hero-kicker{font-size:12.5px;letter-spacing:3px;font-weight:700;color:#dbeafe;margin-bottom:18px}
.hero-banner h1{font-size:42px;line-height:1.18;margin:0 0 26px;color:#fff;text-shadow:0 2px 14px rgba(0,0,0,.35)}
.h1-line1{display:block;font-size:.82em}
/* 鋼筆身世圖譜：黑藍色 ripple neon */
.h1-line2{display:block;font-size:1.06em;letter-spacing:2px;
  background:linear-gradient(120deg,#ffffff 0%,#93c5fd 18%,#2563eb 38%,#ffffff 50%,#3b82f6 66%,#bfdbfe 84%,#ffffff 100%);
  background-size:320% 100%;
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
  animation:rippleNeon 6s linear infinite}
@keyframes rippleNeon{0%{background-position:0% 50%}100%{background-position:320% 50%}}
.hero-sub{font-size:12.5px;line-height:1.75;color:#eef2ff;margin:34px 0 0;text-shadow:0 1px 6px rgba(0,0,0,.4);max-width:480px;opacity:.85;letter-spacing:.4px;margin-top:auto}
.hero-search,.hero-search .hs-ico,.hero-search:hover{display:none}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:6px;justify-content:flex-start}
/* 兩顆按鈕都改藍底 */
.hero-cta .btn,.hero-cta .btn.ghost.light{background:linear-gradient(135deg,#1d4ed8,#2563eb);border:none;color:#fff;box-shadow:0 4px 14px rgba(29,78,216,.35)}
.hero-cta .btn:hover,.hero-cta .btn.ghost.light:hover{background:linear-gradient(135deg,#1e40af,#1d4ed8)}
.btn{display:inline-flex;align-items:center;gap:7px;background:var(--primary);color:#fff;padding:11px 20px;border-radius:30px;font-weight:600;font-size:15px;border:none;cursor:pointer}
.btn:hover{background:var(--primary-d);text-decoration:none}
.btn.ghost{background:var(--card);color:var(--primary);border:1px solid var(--primary)}
.btn.ghost.light{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.7)}

/* ---------- section heading ---------- */
.section{padding:46px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:24px;gap:12px}
.section-head h2{font-size:27px;margin:0}
.section-head .more{font-size:14px;white-space:nowrap}

/* ---------- article cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-soft)}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card .body{padding:16px 17px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.card .meta{font-size:12px;color:var(--muted);display:flex;gap:8px;align-items:center;flex-wrap:nowrap;white-space:nowrap}
.card .meta span{white-space:nowrap;flex-shrink:0}
.level{background:var(--primary-soft);color:var(--primary);padding:2px 9px;border-radius:20px;font-weight:600;font-size:11.5px;white-space:nowrap}
.card h3{font-size:16.5px;margin:0}
.card h3 a{color:var(--ink)}
.card .excerpt{font-size:13.5px;color:var(--muted);margin:0;flex:1}
.card .tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.tag{font-size:12px;color:var(--primary);background:var(--primary-soft);padding:2px 10px;border-radius:20px}
.tag:hover{text-decoration:none;background:var(--primary);color:#fff}

/* ---------- topic cluster cards ---------- */
.clusters{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.cluster{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);display:grid;grid-template-columns:200px 1fr}
.cluster .c-img{background:var(--bg-soft);overflow:hidden}
.cluster .c-img img{width:100%;height:100%;object-fit:cover}
.cluster .c-body{padding:18px 20px}
.cluster .c-en{font-size:12px;letter-spacing:1px;color:var(--muted);text-transform:uppercase}
.cluster h3{font-size:20px;margin:2px 0 6px}
.cluster h3 a{color:var(--ink)}
.cluster .c-desc{font-size:13.5px;color:var(--ink-soft);margin:0 0 10px}
.cluster .c-subs{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:12px}
.cluster .c-go{font-size:13.5px;font-weight:600}

/* ---------- breadcrumb ---------- */
.breadcrumb{font-size:13px;color:var(--muted);padding:16px 0 0}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0}
.breadcrumb li::after{content:"/";margin-left:6px;color:var(--line)}
.breadcrumb li:last-child::after{content:""}
.breadcrumb li:last-child{color:var(--ink-soft)}

/* ---------- article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:34px;padding:18px 0 50px}
.article-head .kicker{font-size:13px;color:var(--primary);font-weight:600;letter-spacing:.5px;text-transform:uppercase}
.article-head h1{font-size:32px;margin:8px 0 12px}
.lead{font-size:18px;color:var(--ink-soft);border-left:4px solid var(--primary);padding:4px 0 4px 16px;margin:0 0 16px}
.article-meta{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--muted);align-items:center;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:20px}
.fav-btn{background:var(--bg-soft);border:1px solid var(--line);border-radius:24px;padding:6px 14px;font:inherit;font-size:13px;cursor:pointer;color:var(--ink)}
.fav-btn.active{background:var(--rose);color:#fff;border-color:var(--rose)}
.article-hero{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin-bottom:26px}
.article-content h2{font-size:24px;margin:38px 0 14px;padding-top:10px}
.article-content h3{font-size:19px;margin:26px 0 10px}
.article-content p{margin:0 0 16px}
.article-content ul,.article-content ol{margin:0 0 16px;padding-left:24px}
.article-content li{margin:5px 0}
.article-content figure{margin:26px 0}
.article-content figure img{border-radius:var(--radius);box-shadow:var(--shadow-sm);width:100%}
.article-content figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:9px}
.article-content table{border-collapse:collapse;width:100%;margin:20px 0;font-size:14.5px;box-shadow:var(--shadow-sm);border-radius:var(--radius);overflow:hidden}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 13px;text-align:left;vertical-align:top}
.article-content th{background:var(--primary-soft);color:var(--primary-d)}
.article-content tr:nth-child(even) td{background:var(--bg)}
.article-content blockquote{margin:20px 0;border-left:4px solid var(--gold);background:var(--bg-soft);padding:14px 18px;border-radius:0 12px 12px 0;color:var(--ink-soft)}
.callout{border-radius:var(--radius-sm);padding:14px 18px;margin:20px 0;font-size:14.5px;border:1px solid}
.callout.tip{background:var(--primary-soft);border-color:var(--primary)}
.callout.warn{background:#fbeee4;border-color:var(--accent)}
.accordion{margin:18px 0;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.accordion-item+.accordion-item{border-top:1px solid var(--line)}
.accordion-head{width:100%;text-align:left;background:var(--card);border:none;font:inherit;font-weight:600;font-size:15.5px;color:var(--ink);padding:15px 18px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:10px}
.accordion-head .pm{color:var(--primary);font-size:20px}
.accordion-body{display:none;padding:0 18px 16px;color:var(--ink-soft);font-size:14.5px}
.accordion-item.open .accordion-body{display:block}
.accordion-item.open .pm{transform:rotate(45deg)}

/* FAQ */
.faq{background:var(--bg-soft);border-radius:var(--radius);padding:24px 26px;margin:34px 0}
.faq h2{margin-top:0}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:0 16px;margin:10px 0}
.faq summary{cursor:pointer;font-weight:600;padding:13px 0;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--primary);font-size:20px}
.faq details[open] summary::after{content:"−"}
.faq .a{padding:0 0 14px;color:var(--ink-soft)}

/* sources */
.sources{font-size:13px;color:var(--muted)}
.sources ol{padding-left:20px}
.sources a{word-break:break-all}

/* related */
.related{margin:40px 0 10px}
.related h2{font-size:22px}
.pager{display:flex;justify-content:space-between;gap:14px;margin-top:30px;border-top:1px solid var(--line);padding-top:22px}
.pager a{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 16px;font-size:14px;flex:1}
.pager .next{text-align:right}
.pager small{display:block;color:var(--muted);font-size:12px}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:88px;align-self:start;display:flex;flex-direction:column;gap:20px;max-height:calc(100vh - 104px);overflow:auto;padding-right:4px}
.side-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 17px}
.side-box h4{margin:0 0 10px;font-size:15px;display:flex;align-items:center;gap:7px}
.toc{list-style:none;margin:0;padding:0;font-size:13.5px}
.toc ul{list-style:none;padding-left:14px;margin:2px 0}
.toc a{display:block;padding:4px 8px;color:var(--ink-soft);border-left:2px solid var(--line);border-radius:0}
.toc a:hover,.toc a.active{color:var(--primary);border-left-color:var(--primary);background:var(--primary-soft);text-decoration:none}
.treemap{font-size:13px}
.treemap .tm-pill{font-weight:700;color:var(--primary);display:block;margin:8px 0 3px}
.treemap ul{list-style:none;margin:0;padding-left:12px;border-left:1px dashed var(--line)}
.treemap a{color:var(--ink-soft);padding:2px 0;display:block}
.treemap a:hover{color:var(--primary)}
/* 側邊分類 mega 手風琴 */
.side-cats{display:flex;flex-direction:column}
.side-cats details{border-bottom:1px dashed var(--line)}
.side-cats details:last-child{border-bottom:none}
.side-cats summary{cursor:pointer;font-size:13.5px;font-weight:700;color:var(--ink);padding:7px 6px;list-style:none;border-radius:8px}
.side-cats summary::-webkit-details-marker{display:none}
.side-cats summary::before{content:"▸ ";color:var(--primary);font-size:10px}
.side-cats details[open] summary::before{content:"▾ "}
.side-cats summary:hover{background:var(--primary-soft);color:var(--primary)}
.side-cats .sc-body{display:flex;flex-direction:column;padding:1px 0 7px 12px}
.side-cats .sc-body a{font-size:12.5px;color:var(--ink-soft);padding:4px 8px;border-radius:7px}
.side-cats .sc-body a:hover{background:var(--primary-soft);color:var(--primary);text-decoration:none}
.side-cats .sc-body a.cur{background:var(--primary-soft);color:var(--primary-d);font-weight:700}
.side-tags{display:flex;flex-wrap:wrap;gap:6px}
.side-fav-list{list-style:none;margin:0;padding:0;font-size:13px}
.side-fav-list li{padding:4px 0;border-bottom:1px dashed var(--line)}
.side-fav-list .empty{color:var(--muted)}

/* ---------- pillar page ---------- */
.pillar-hero{display:grid;grid-template-columns:1fr 320px;gap:30px;align-items:center;padding:30px 0}
.pillar-hero h1{font-size:34px;margin:6px 0}
.pillar-hero .pen{color:var(--muted);letter-spacing:1px;text-transform:uppercase;font-size:13px}
.pillar-hero img{border-radius:var(--radius);box-shadow:var(--shadow)}
.subgroup{margin:30px 0}
.subgroup-head{display:flex;align-items:baseline;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.subgroup-head h2{font-size:21px;margin:0}
.subgroup-head .cnt{font-size:13px;color:var(--muted)}
.subgroup-head .desc{font-size:13.5px;color:var(--muted);flex-basis:100%}

/* ---------- faceted search page ---------- */
.facet-layout{display:grid;grid-template-columns:240px 1fr;gap:28px;padding:24px 0 50px}
.facet-panel{position:sticky;top:88px;align-self:start;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.facet-group{margin-bottom:18px}
.facet-group h4{font-size:14px;margin:0 0 8px}
.facet-group label{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-soft);padding:3px 0;cursor:pointer}
.result-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;font-size:14px;color:var(--muted)}
.result-bar select{font:inherit;padding:6px 10px;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--ink)}
.clear-facets{font-size:13px}

/* ---------- tags index / az ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;padding:20px 0}
.tag-cloud a{padding:6px 16px;border-radius:24px;background:var(--card);border:1px solid var(--line);color:var(--ink-soft)}
.az-letters{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0}
.az-letters a{width:38px;height:38px;display:grid;place-items:center;border-radius:9px;background:var(--card);border:1px solid var(--line);font-weight:700}
.az-group h2{border-bottom:2px solid var(--primary);padding-bottom:6px;margin-top:30px}
.az-group ul{list-style:none;padding:0}
.az-group li{padding:6px 0;border-bottom:1px dashed var(--line)}

/* knowledge graph */
.graph-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin:20px 0}
.graph-box canvas{width:100%;height:420px;border-radius:var(--radius-sm);background:var(--bg)}
.graph-legend{font-size:12.5px;color:var(--muted);margin-top:8px}

/* pagination */
.pagination{display:flex;gap:7px;justify-content:center;margin:36px 0}
.pagination a,.pagination span{min-width:40px;height:40px;display:grid;place-items:center;border-radius:9px;background:var(--card);border:1px solid var(--line);font-size:14px;padding:0 8px}
.pagination .current{background:var(--primary);color:#fff;border-color:var(--primary)}

/* fixed dock */
.dock{position:fixed;right:20px;bottom:22px;z-index:90;display:flex;flex-direction:column;gap:9px}
.dock button,.dock a{width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow);font-size:19px;cursor:pointer;color:var(--primary);display:grid;place-items:center}
.dock button:hover,.dock a:hover{background:var(--primary);color:#fff;text-decoration:none}
.dock .dock-mega{width:52px;height:52px;border-radius:50%;border:1px solid var(--line);background:var(--primary);color:#fff;box-shadow:var(--shadow);font-size:21px;cursor:pointer;display:grid;place-items:center}
.dock .dock-line{width:58px;height:58px;border-radius:14px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);padding:0;margin-bottom:16px}
.dock .dock-line img{width:100%;height:100%;object-fit:cover;display:block}
.dock .dock-line:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.dock .dock-mega:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.dock-mega-panel{position:absolute;bottom:calc(100% + 14px);right:0;width:min(250px,calc(100vw - 40px));min-width:210px;background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:8px;z-index:95;max-height:calc(100vh - 130px);overflow:auto;writing-mode:horizontal-tb}
.dock-mega-panel .dmp-head{font-size:12.5px;font-weight:700;letter-spacing:1px;color:var(--muted);padding:6px 12px 8px;border-bottom:1px solid var(--line);margin-bottom:6px;writing-mode:horizontal-tb}
.dock-mega-panel .dmp-major{display:block;font-size:16px;font-weight:700;color:var(--ink);text-decoration:none;padding:12px 12px;border-bottom:1px solid var(--line);white-space:nowrap;writing-mode:horizontal-tb}
.dock-mega-panel .dmp-major:last-child{border-bottom:0}
.dock-mega-panel .dmp-major:hover{color:var(--primary);background:var(--primary-soft)}

/* footer */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:42px 0 26px;margin-top:30px}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:28px}
.footer-grid h5{font-size:14px;margin:0 0 10px}
.footer-grid ul{list-style:none;margin:0;padding:0;font-size:13.5px}
.footer-grid li{padding:3px 0}
.footer-grid a{color:var(--ink-soft)}
.footer-bottom{border-top:1px solid var(--line);margin-top:26px;padding-top:16px;font-size:12.5px;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.social{display:flex;gap:10px}
.social a{width:36px;height:36px;border-radius:50%;background:var(--card);display:grid;place-items:center;border:1px solid var(--line)}

/* 404 */
.error-page{text-align:center;padding:90px 20px;max-width:620px;margin:0 auto}
.error-page .big{font-size:110px;font-weight:800;color:var(--primary);line-height:1}
.error-page h1{font-size:28px}

/* responsive */
@media (max-width:1020px){
  .hero-inner{grid-template-columns:1fr}
  .article-layout{grid-template-columns:1fr}
  .sidebar{position:static;max-height:none;display:grid;grid-template-columns:1fr 1fr}
  .facet-layout{grid-template-columns:1fr}
  .facet-panel{position:static}
  .pillar-hero{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cluster{grid-template-columns:1fr}
  .cluster .c-img{aspect-ratio:16/7}
}
@media (max-width:1200px){
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--card);flex-direction:column;padding:12px;border-bottom:1px solid var(--line);z-index:80}
  .main-nav.mobile-open{display:flex}
  .mega{position:static;min-width:0;max-width:none;box-shadow:none}
  .mega-cats.c3,.mega-cats.c2{grid-template-columns:1fr 1fr}
  .burger{display:grid}
}
@media (max-width:760px){
  .mega-panel{min-width:0}
  .mega-all{grid-template-columns:1fr 1fr}
  .mega-panel .mega-inner.wide{min-width:0}
  .cards{grid-template-columns:1fr}
  .clusters{grid-template-columns:1fr}
  .sidebar{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-split{min-height:0;padding:30px 0}
  .hero-banner{min-height:330px}
  .hero-content{padding:22px clamp(16px,5vw,24px)}
  .hero-content .hero-brand-only{font-size:25px}
  .hero-content .hero-brand-only{font-size:31px}
  .hero-bg{object-position:center}
  .hero-split-inner{flex-direction:column;gap:26px}
  .hero-text{max-width:100%}
  .hero-text h1{font-size:28px}
  .hero-text .hero-brand-only{font-size:30px}
  .hero-intro{padding:30px 16px 36px}
  .intro-line2{font-size:24px;margin-bottom:18px}
  .hero-intro-head .hero-sub{font-size:12px}
  .hero-visual{justify-content:center;order:-1}
  .hero-visual img{max-height:300px;width:100%;max-width:100%;border-radius:16px}
  .hero-text .hero-sub{font-size:12px}
  .hero-text .hero-cta{gap:10px}
  .h1-line1{font-size:.85em}
  .h1-line2{font-size:1.12em}
}