/* Travel in Sai Kung — design system */
:root{
  --ocean:#0e5a6e;--ocean-dark:#083442;--ocean-light:#1a829c;
  --sand:#f6f1e7;--sand-2:#efe7d6;--coral:#e8744a;--coral-dark:#cf5c34;
  --ink:#1d2b30;--muted:#5d6b70;--line:#e0dac9;--white:#fff;
  --radius:14px;--radius-sm:8px;--shadow:0 6px 24px rgba(8,40,52,.10);
  --max:1140px;--ff:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","PingFang TC","Microsoft JhengHei",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--ff);color:var(--ink);background:var(--white);line-height:1.65;font-size:17px}
img{max-width:100%;height:auto;display:block}
a{color:var(--ocean);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.25;color:var(--ocean-dark);margin:0 0 .5em}
h1{font-size:clamp(2rem,5vw,3rem)}
h2{font-size:clamp(1.5rem,3.2vw,2.1rem)}
h3{font-size:1.25rem}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
.narrow{max-width:720px;margin:0 auto}
.visually-hidden,.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:8px;top:8px;background:var(--coral);color:#fff;padding:8px 14px;border-radius:8px;z-index:200}

/* Buttons */
.btn{display:inline-block;padding:.7em 1.3em;border-radius:999px;font-weight:600;border:2px solid transparent;cursor:pointer;transition:.18s;text-decoration:none}
.btn--primary{background:var(--coral);color:#fff}
.btn--primary:hover{background:var(--coral-dark);text-decoration:none}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn--ghost:hover{background:rgba(255,255,255,.15);text-decoration:none}
.btn--block{display:block;text-align:center;background:var(--ocean);color:#fff;width:100%}
.btn--block:hover{background:var(--ocean-dark);text-decoration:none}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:var(--white);border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(0,0,0,.02)}
.header-inner{display:flex;align-items:center;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ocean-dark);font-size:1.1rem;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand-logo{border-radius:8px;flex:0 0 auto}
.brand-text{white-space:nowrap}
.primary-nav{margin-left:auto;display:flex;align-items:center;gap:14px}
.primary-nav ul{display:flex;gap:6px;list-style:none;margin:0;padding:0;flex-wrap:nowrap}
.primary-nav a{color:var(--ink);font-weight:600;font-size:.92rem;white-space:nowrap;padding:6px 8px;border-radius:8px}
.primary-nav a:hover{color:var(--coral);background:var(--sand);text-decoration:none}
.nav-search{display:flex;align-items:center;background:var(--sand);border-radius:999px;padding:2px 4px 2px 12px;flex:0 1 auto}
.nav-search input{border:0;background:transparent;padding:6px 4px;font-size:.88rem;width:130px;min-width:90px;outline:none}
.nav-search button{border:0;background:transparent;cursor:pointer;font-size:1rem;padding:4px 8px}
.lang-switch{font-weight:700;color:var(--ocean);border:1.5px solid var(--ocean);border-radius:999px;padding:6px 14px;font-size:.85rem;white-space:nowrap;flex:0 0 auto}
.lang-switch:hover{background:var(--ocean);color:#fff;text-decoration:none}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;position:relative}
.nav-toggle-bar,.nav-toggle-bar::before,.nav-toggle-bar::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:20px;height:2px;background:var(--ink)}
.nav-toggle-bar::before{transform:translate(-50%,-7px)}
.nav-toggle-bar::after{transform:translate(-50%,5px)}

/* Hero */
.hero{position:relative;color:#fff;background:linear-gradient(135deg,var(--ocean) 0%,var(--ocean-dark) 100%);overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:url("../img/hero-pattern.svg") center/cover;opacity:.18}
.hero-inner{position:relative;z-index:2;padding:88px 20px;max-width:780px}
.hero-eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:.8rem;font-weight:700;opacity:.85;margin:0 0 .4em}
.hero h1{color:#fff;margin:0 0 .2em}
.hero-tagline{font-size:1.2rem;opacity:.95;margin:0 0 1.6em}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}

/* Sections */
.section{padding:64px 0}
.section--alt{background:var(--sand)}
.section-head{margin-bottom:32px;display:flex;justify-content:space-between;align-items:end;gap:16px;flex-wrap:wrap}
.section-head h2{margin:0}
.section-head p{color:var(--muted);max-width:640px;margin:.4em 0 0;flex-basis:100%}
.section-more{font-weight:700;white-space:nowrap}

/* Category tiles */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.cat-tile{display:flex;flex-direction:column;gap:6px;padding:22px;border-radius:var(--radius);background:var(--ocean);color:#fff;font-weight:700;transition:.18s;box-shadow:var(--shadow)}
.cat-tile:hover{transform:translateY(-3px);background:var(--ocean-dark);text-decoration:none}
.cat-tile-name{font-size:1.15rem}
.cat-tile-desc{font-size:.85rem;font-weight:400;opacity:.85}

/* Cards */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow);transition:.18s}
.card:hover{transform:translateY(-3px)}
.card-media{display:block;aspect-ratio:3/2;background:var(--ocean-light);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-media--placeholder{display:flex;align-items:center;justify-content:center;height:100%;color:#fff;font-size:2rem;font-weight:800;opacity:.5}
.card-body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1}
.card-kind{font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;color:var(--coral);font-weight:700}
.card-title{font-size:1.15rem;margin:0}
.card-title a{color:var(--ocean-dark)}
.card-excerpt{color:var(--muted);font-size:.92rem;margin:0;flex:1}
.card-link{font-weight:700;font-size:.9rem;margin-top:6px}

/* Geopark feature */
.geopark-feature{background:linear-gradient(135deg,var(--ocean-dark),#0a4250);color:#fff}
.geopark-feature h2{color:#fff}
.geopark-copy{max-width:640px}
.link-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:8px}
.link-list a{color:#ffd9c7;font-weight:600}

/* Page head */
.page-head{background:var(--sand);padding:54px 0 40px}
.page-head--image{color:#fff;background-size:cover;background-position:center}
.page-head--image h1,.page-head--image .page-head-lede{color:#fff}
.page-head h1{margin:0 0 .2em}
.page-head-lede{color:var(--muted);max-width:720px;font-size:1.1rem;margin:0}

/* Breadcrumbs */
.breadcrumbs{background:var(--sand-2);font-size:.85rem}
.breadcrumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:10px 0}
.breadcrumbs li:not(:last-child)::after{content:"/";margin-left:6px;color:var(--muted)}
.breadcrumbs span[aria-current]{color:var(--muted)}

/* Article */
.article-head{padding:56px 0 44px;background:var(--ocean-dark);color:#fff}
.article-head--image{background-size:cover;background-position:center}
.article-head h1{color:#fff;max-width:880px}
.article-kind{display:inline-block;text-transform:uppercase;letter-spacing:.12em;font-size:.75rem;font-weight:700;color:#ffd9c7;margin-bottom:10px}
.article-sub{font-size:1.15rem;opacity:.92;max-width:760px}
.article-meta{font-size:.85rem;opacity:.8;margin:.6em 0 0}
.article-layout{display:grid;grid-template-columns:1fr 280px;gap:48px;padding-top:44px;padding-bottom:44px}
.article-body{font-size:1.06rem;min-width:0}
.article-body h2{margin-top:1.8em;padding-top:.3em;border-top:2px solid var(--line)}
.article-body h3{margin-top:1.4em;color:var(--ocean)}
.article-body p,.article-body li{color:#293a40}
.article-body ul,.article-body ol{padding-left:1.3em}
.article-body img{border-radius:var(--radius);margin:1.4em 0}
.article-body blockquote{border-left:4px solid var(--coral);margin:1.4em 0;padding:.4em 1.2em;background:var(--sand);border-radius:0 8px 8px 0;color:var(--muted)}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:.95rem}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--sand)}
.article-body a{text-decoration:underline;text-underline-offset:2px}
.article-aside{align-self:start;position:sticky;top:84px;display:grid;gap:18px}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{background:var(--sand);color:var(--muted);font-size:.8rem;padding:4px 10px;border-radius:999px}
.map-link{margin-top:2em}
.map-link .btn{color:var(--ocean);border-color:var(--ocean)}

/* FAQ */
.faq{margin-top:2.4em}
.faq-item{border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:10px;padding:0 16px;background:#fff}
.faq-item summary{cursor:pointer;font-weight:700;padding:14px 0;color:var(--ocean-dark)}
.faq-answer{padding-bottom:14px;color:#293a40}

/* Prose (about) */
.prose{max-width:760px;font-size:1.08rem}
.prose a{text-decoration:underline}

/* Forms */
.form,.search-form{display:grid;gap:14px;max-width:560px}
.search-form{grid-template-columns:1fr auto;align-items:center}
.form label{display:grid;gap:6px;font-weight:600;font-size:.92rem}
.form input,.form textarea,.search-form input{border:1px solid var(--line);border-radius:var(--radius-sm);padding:11px 13px;font-size:1rem;font-family:inherit}
.form input:focus,.form textarea:focus{outline:2px solid var(--ocean-light);border-color:var(--ocean)}
.flash{padding:12px 16px;border-radius:var(--radius-sm);margin-bottom:16px}
.flash--success{background:#e3f3e8;color:#1d6b3a}
.flash--error{background:#fae3e0;color:#a8331f}
.result-count{color:var(--muted);margin-bottom:20px}
.empty{color:var(--muted);text-align:center;padding:40px 0}

/* Footer */
.site-footer{background:var(--ocean-dark);color:#cfe2e8;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:40px;padding:54px 20px}
.brand--footer{color:#fff;margin-bottom:14px}
.footer-about p{color:#a9c6cf;max-width:380px}
.footer-h{color:#fff;font-size:1rem;margin:0 0 14px}
.footer-col ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.footer-col a{color:#cfe2e8}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);font-size:.85rem;padding:16px 0}
.footer-bottom p{margin:0;color:#9fbcc5}
.error-page{text-align:center}
.error-page .lede{color:var(--muted);max-width:560px;margin:0 auto 24px}
.error-page .card-grid{margin-top:40px;text-align:left}

/* Mobile */
@media(max-width:880px){
  .nav-toggle{display:block}
  .primary-nav{position:fixed;inset:64px 0 auto;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 0 16px;margin:0;border-bottom:1px solid var(--line);box-shadow:var(--shadow);max-height:calc(100vh - 64px);overflow:auto;transform:translateY(-120%);transition:transform .25s;visibility:hidden}
  .primary-nav.is-open{transform:translateY(0);visibility:visible}
  .primary-nav ul{flex-direction:column;gap:0}
  .primary-nav li{border-bottom:1px solid var(--line)}
  .primary-nav ul a{display:block;padding:14px 20px}
  .nav-search{margin:12px 20px}
  .nav-search input{width:100%}
  .lang-switch{margin:0 20px;text-align:center}
  .article-layout{grid-template-columns:1fr;gap:24px}
  .article-aside{position:static}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .section{padding:44px 0}
}