:root{
  --bg:#f5f7fa;--panel:#fff;--ink:#16202c;--muted:#5b6878;--line:#dde3ea;
  --brand:#0b5fa8;--brand-d:#08467d;--accent:#00a3c4;--foot:#0c2238;--foot-ink:#c7d3e0;
  --r:10px;--sh:0 1px 2px rgba(16,32,48,.06),0 6px 20px rgba(16,32,48,.06);
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0f1721;--panel:#17212d;--ink:#e8eef5;--muted:#9fb0c2;--line:#27384a;--brand:#4aa3ea;--brand-d:#7bbcf2;--accent:#2cc4e3;--foot:#0a121b;--foot-ink:#9fb0c2;--sh:none}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 "Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;-webkit-text-size-adjust:100%}
img{max-width:100%;height:auto}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.wrap{width:min(1120px,100% - 32px);margin-inline:auto}

/* header */
.top{position:sticky;top:0;z-index:20;background:var(--panel);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.logo{display:flex;align-items:center;gap:8px;color:var(--ink);font-size:15px;white-space:nowrap}
.logo:hover{text-decoration:none}.logo img{height:30px}
.logo b{color:var(--brand);font-size:20px;letter-spacing:.06em}
.menu{display:flex;gap:2px;list-style:none;margin:0;padding:0}
.menu>li{position:relative}
.menu>li>a{display:block;padding:20px 12px;color:var(--ink);font-size:15px}
.menu>li>a:hover,.menu>li.active>a{color:var(--brand);text-decoration:none}
.menu>li.active>a{box-shadow:inset 0 -3px 0 var(--brand)}
.sub{display:none;position:absolute;top:100%;left:0;min-width:240px;list-style:none;margin:0;padding:6px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh)}
.menu>li:hover .sub,.menu>li:focus-within .sub{display:block}
.sub a{display:block;padding:8px 12px;color:var(--ink);border-radius:6px;font-size:14px}
.sub a:hover{background:var(--bg);color:var(--brand);text-decoration:none}
.mt,.burger{display:none}

/* hero + banner */
.hero,.banner{color:#fff;--ov:linear-gradient(120deg,rgba(6,38,70,.88),rgba(11,95,168,.72));background:#0b3b66 center/cover no-repeat}
.hero{padding:84px 0 92px}
.hero h1{font-size:clamp(28px,5vw,46px);line-height:1.25;margin:.2em 0 .5em;font-weight:700}
.eyebrow{font-size:13px;letter-spacing:.12em;text-transform:none;color:#8fd8ea;margin:0}
.lead{max-width:760px;font-size:17px;color:#e3edf7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.banner{padding:34px 0 38px}
.banner h1{margin:.15em 0 0;font-size:clamp(24px,3.6vw,34px);line-height:1.3}
.crumb{font-size:13px;color:#bcd3ea}.crumb a{color:#dcecff}.crumb span{opacity:.6;margin:0 4px}

/* buttons */
.btn{display:inline-block;padding:10px 22px;border-radius:999px;background:var(--brand);color:#fff;font-size:15px;border:1px solid var(--brand)}
.btn:hover{background:var(--brand-d);text-decoration:none}
.hero .btn{background:#fff;color:var(--brand-d);border-color:#fff}
.btn.ghost,.hero .btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}

/* page */
.page{padding:36px 0 64px}
.sec{margin:0 0 20px;font-size:24px}
.prose{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:28px clamp(18px,4vw,40px);box-shadow:var(--sh)}
.prose:empty{display:none}
.prose h2{margin:1.6em 0 .5em;font-size:22px;padding-left:12px;border-left:4px solid var(--accent);line-height:1.4}
.prose h2:first-child{margin-top:0}
.prose h3{margin:1.3em 0 .4em;font-size:18px;color:var(--brand)}
.prose p{margin:.7em 0}
.prose ul{padding-left:1.3em;margin:.6em 0}.prose li{margin:.3em 0}
.prose figure{margin:1em 0}.prose figure img{border-radius:8px;max-width:360px}
.note{margin:1em 0;padding:12px 16px;border-radius:8px;background:rgba(0,163,196,.1);border-left:4px solid var(--accent);color:var(--muted);font-size:15px}
.hero-img{margin:0 0 20px}.hero-img img{display:block;max-height:360px;border-radius:var(--r);border:1px solid var(--line);background:#fff}
.dl{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px 22px;margin-bottom:20px;box-shadow:var(--sh)}
.dl h3{margin:0 0 6px;font-size:16px}.dl ul{margin:0 0 12px;padding-left:1.2em}

/* cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px;margin-top:24px}
.page>.grid:first-child{margin-top:0}
.card{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;color:var(--ink);box-shadow:var(--sh);transition:transform .15s,border-color .15s}
.card:hover{transform:translateY(-3px);border-color:var(--brand);text-decoration:none}
.card .ph{aspect-ratio:16/10;background:#e9eef4;display:flex;align-items:center;justify-content:center;overflow:hidden}
.card .ph img{width:100%;height:100%;object-fit:cover}
.card .ph.noimg{background:linear-gradient(135deg,#0b5fa8,#00a3c4)}
.card h3{margin:14px 16px 4px;font-size:17px;line-height:1.4}
.card p{margin:0 16px 16px;color:var(--muted);font-size:14px;line-height:1.6}

/* footer */
footer{background:var(--foot);color:var(--foot-ink);font-size:14px}
.foot{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:28px;padding:36px 0 20px}
.foot b{color:#fff}.foot p{margin:.5em 0}.foot a{color:var(--foot-ink)}
.copy{text-align:center;padding:14px 16px;border-top:1px solid rgba(255,255,255,.08);font-size:12px}

@media (max-width:900px){
  .burger{display:block;width:44px;height:44px;cursor:pointer;position:relative}
  .burger i,.burger i::before,.burger i::after{position:absolute;left:11px;width:22px;height:2px;background:var(--ink);content:"";transition:.2s}
  .burger i{top:21px}.burger i::before{top:-7px;left:0}.burger i::after{top:7px;left:0}
  nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--panel);border-bottom:1px solid var(--line);max-height:75vh;overflow:auto}
  .mt:checked ~ nav{display:block}
  .menu{flex-direction:column;padding:8px 16px}
  .menu>li>a{padding:12px 4px}
  .sub{display:block;position:static;border:0;box-shadow:none;padding:0 0 6px 14px}
  .hero{padding:56px 0 60px}
}
.lang{display:inline-block;margin-left:10px;padding:5px 12px;border:1px solid var(--brand);border-radius:999px;font-size:13px;color:var(--brand)}
.lang:hover{background:var(--brand);color:#fff;text-decoration:none}
@media(min-width:901px){html[lang=en] .menu>li>a{padding:20px 8px;font-size:14px}html[lang=en] nav{white-space:nowrap}.lang{margin-left:6px}}
@media(min-width:901px){header.top nav{display:flex;align-items:center}}

.logo img{height:40px}
.acts{display:flex;align-items:center;gap:6px}
.act{display:inline-flex;align-items:center;justify-content:center;color:var(--ink);min-width:36px;height:36px;border-radius:999px;font-size:14px}
.act:hover{color:var(--brand);background:var(--bg);text-decoration:none}
.act.login{padding:0 14px;border:1px solid var(--line)}
.map{margin:14px 0 6px;border-radius:var(--r);overflow:hidden;border:1px solid var(--line)}
.map iframe{display:block;width:100%;height:380px;border:0}
.sbox{width:100%;padding:14px 16px;font-size:17px;border:1px solid var(--line);border-radius:var(--r);background:var(--panel);color:var(--ink);margin-bottom:22px}
.sr{padding:16px 18px}
.lform{display:grid;gap:12px;max-width:360px;margin-top:18px}
.lform label{display:grid;gap:4px;font-size:14px}
.lform input{padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink)}
@media(min-width:901px){header.top nav{gap:6px}}
@media(max-width:900px){.acts{padding:8px 0}}

.logo img{height:120px;width:auto}
.bar{min-height:132px}
@media(prefers-color-scheme:dark){.logo img{filter:invert(1) brightness(1.1)}}
@media(max-width:900px){.logo img{height:72px}}
/* 首頁主視覺:只在左側文字區加深,右側讓圖片清楚呈現 */
.hero{
  --ov:linear-gradient(90deg,rgba(4,22,44,.90) 0%,rgba(4,22,44,.72) 30%,rgba(4,22,44,.28) 58%,rgba(4,22,44,0) 85%),
       linear-gradient(0deg,rgba(4,22,44,.5) 0%,rgba(4,22,44,0) 30%);
  background-position:60% 42%;
  min-height:560px;padding:120px 0 110px
}
.hero h1,.hero .lead,.hero .eyebrow{text-shadow:0 2px 14px rgba(0,0,0,.6)}
.hero h1{font-size:clamp(30px,5.2vw,52px)}
.hero .lead{color:#f4f8fc}
.hero .eyebrow{color:#9fe3f2}
@media(max-width:900px){.hero{min-height:460px;padding:80px 0;--ov:linear-gradient(180deg,rgba(4,22,44,.55),rgba(4,22,44,.85))}}

/* 關於我們：帶照片的頁首橫幅（左側壓暗放文字，右側露出照片） */
.banner.photo{--ov:linear-gradient(90deg,rgba(4,22,44,.84) 0%,rgba(4,22,44,.66) 32%,rgba(4,22,44,.30) 58%,rgba(4,22,44,0) 85%);min-height:300px;padding:70px 0 64px;background-position:50% 50%}
.banner.photo h1,.banner.photo .crumb,.banner.photo .crumb a{text-shadow:0 2px 12px rgba(0,0,0,.65)}
@media(max-width:900px){.banner.photo{min-height:200px;padding:40px 0;--ov:linear-gradient(180deg,rgba(4,22,44,.55),rgba(4,22,44,.7))}}

.grid+.sec,.prose+.sec{margin-top:40px}

/* ---- forms / member / admin ---- */
.wform{display:grid;gap:14px;max-width:640px;margin-top:18px}
.wform label{display:grid;gap:5px;font-size:14px}
.wform input,.wform textarea,.lform input{padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);font:inherit;width:100%;box-sizing:border-box}
.wform textarea{min-height:130px;resize:vertical}
.wform button,.lform button{justify-self:start;cursor:pointer}
.wform button:disabled,.lform button:disabled{opacity:.6;cursor:default}
.hp,.wform .hp,.lform .hp{position:absolute!important;left:-9999px;width:1px;height:0;overflow:hidden}
.fmsg{font-size:14px;min-height:1.3em}
.fmsg.ok{color:#0a7d3c}.fmsg.err{color:#c0392b}
.lform .alt{font-size:14px;color:var(--muted)}
.tw{overflow-x:auto;margin:10px 0 28px}
#admin table{border-collapse:collapse;font-size:13px;min-width:700px}
#admin th,#admin td{border:1px solid var(--line);padding:6px 8px;text-align:left;vertical-align:top}
#admin td.ac button{margin:0 4px 4px 0;padding:4px 10px;border:1px solid var(--line);border-radius:6px;background:var(--panel);color:var(--ink);cursor:pointer}
#member ul,#dl ul{padding-left:1.2em}