@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@300;400;500;700&family=Noto+Serif+TC:wght@400;500;600;700&display=swap');

:root{
  --g:#00ff80;
  --b:#0000ff;
  --k:#000000;
  --w:#ffffff;
  --serif:"Noto Serif TC","Songti SC","STSong",serif;
  --sans:"Noto Sans TC",system-ui,-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--w);color:var(--k);font-family:var(--sans);font-size:17px;line-height:1.7;font-weight:400;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:var(--k)}
h1,h2,h3{font-family:var(--serif);font-weight:700;line-height:1.25;letter-spacing:.02em;margin:0}
:focus-visible{outline:4px solid var(--b);outline-offset:2px}

.masthead{border-bottom:5px solid var(--k);background:var(--w)}
.brandbar{display:flex;align-items:center;padding:12px 16px;border-bottom:3px solid var(--k);background:var(--g)}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:46px;padding:4px 12px;border:3px solid var(--k);background:var(--w);text-decoration:none;font-family:var(--serif);font-size:20px;font-weight:700;letter-spacing:.04em}
.brand:hover,.brand:focus{background:var(--k);color:var(--g)}
.brandlogo{width:32px;height:32px;object-fit:contain}

.navbar{background:var(--k)}
.navgroup{padding:0}
.navsum{display:flex;align-items:center;gap:10px;min-height:48px;padding:0 16px;color:var(--w);font-weight:700;letter-spacing:.22em;cursor:pointer;list-style:none;background:var(--k)}
.navsum::-webkit-details-marker{display:none}
.navsum::before{content:"";width:12px;height:12px;background:var(--g);border:2px solid var(--w);flex:none}
.navgroup[open] .navsum::before{background:var(--b)}
.navmenu{display:flex;flex-wrap:wrap;margin:0;padding:0;list-style:none}
.navmenu > li{flex:1 1 auto;border-top:2px solid var(--w);border-right:2px solid var(--w)}
.navmenu > li:last-child{border-right:0}
.navlink{display:flex;align-items:center;justify-content:center;min-height:48px;padding:8px 14px;background:var(--g);color:var(--k);text-decoration:none;font-weight:700;font-size:16px;line-height:1.4;text-align:center}
.navlink:hover,.navlink:focus{background:var(--b);color:var(--w)}

.hero{display:grid;grid-template-columns:1.15fr .85fr;min-height:45vh;border-bottom:5px solid var(--k)}
.hero-copy{display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;gap:14px;padding:26px 20px}
.hero-copy h1{font-size:clamp(26px,4.2vw,44px);max-width:15em}
.hero-desc{margin:0;max-width:28em;font-size:16px;line-height:1.6;color:#111}
.hero-art{position:relative;display:flex;align-items:center;justify-content:center;padding:16px 16px 16px 34px;border-left:5px solid var(--k);background:repeating-linear-gradient(135deg,var(--g) 0 18px,var(--b) 18px 36px);overflow:hidden}
.hero-img{position:relative;width:100%;height:100%;object-fit:cover;border:4px solid var(--k)}
.slash{position:absolute;left:0;top:-10%;bottom:-10%;width:26px;background:var(--k);transform:skewX(-11deg)}

.spread{display:grid;grid-template-columns:258px minmax(0,1fr)}
.rail{border-right:5px solid var(--k);padding:0 0 30px}
.rail-title{display:block;margin:0;padding:12px 16px;background:var(--k);color:var(--g);font-size:18px;letter-spacing:.16em;border-bottom:5px solid var(--k)}
.raillist{list-style:none;margin:0;padding:16px;display:flex;flex-direction:column;gap:12px;counter-reset:rail}
.raillist > li{counter-increment:rail}
.railcard{display:flex;align-items:center;gap:10px;min-height:48px;padding:10px 12px;border:3px solid var(--k);border-bottom-width:8px;border-bottom-color:var(--g);border-radius:18px;background:var(--w);color:var(--k);text-decoration:none;font-weight:700;font-size:16px;line-height:1.4}
.railcard::before{content:counter(rail,decimal-leading-zero);flex:none;font-family:var(--serif);font-size:14px;line-height:1;padding:3px 5px;background:var(--k);color:var(--g)}
.railcard:hover,.railcard:focus{background:var(--g);border-bottom-color:var(--b);transform:translate(-3px,-3px);box-shadow:4px 4px 0 var(--k)}
.railcard:active{transform:none;box-shadow:none}

.body-shell{min-width:0;padding:34px 26px 70px}
.body-shell > div{padding-bottom:42px;margin-bottom:42px;border-bottom:4px solid var(--k);scroll-margin-top:24px}
.body-shell > div:last-child{border-bottom:0;margin-bottom:0;padding-bottom:8px}
.body-shell h2{margin:0 0 18px;font-size:clamp(21px,2.4vw,30px)}
.body-shell h2 span{display:inline-block;padding:2px 8px;background:var(--g);border-bottom:5px solid var(--k)}
.body-shell h3{margin:26px 0 12px;font-size:19px;padding-left:12px;border-left:8px solid var(--b)}
.body-shell p{margin:0 0 16px}
.body-shell ul,.body-shell ol{margin:0 0 18px;padding-left:1.4em}
.body-shell li{margin-bottom:8px}
.body-shell a{color:var(--b);text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}
.body-shell a:hover,.body-shell a:focus{background:var(--g);color:var(--k)}
.body-shell blockquote{margin:0 0 18px;padding:14px 18px;border:3px solid var(--k);border-left:12px solid var(--g);background:#f2fff8;font-family:var(--serif)}
.body-shell img{margin:18px 0;border:4px solid var(--k)}
.body-shell table{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:16px}
.body-shell th,.body-shell td{border:2px solid var(--k);padding:8px 10px;text-align:left}
.body-shell th{background:var(--g)}

.foot{border-top:5px solid var(--k);background:var(--k);color:var(--w)}
.footcols{display:grid;grid-template-columns:repeat(4,1fr)}
.fcol{margin:0;padding:24px 18px;border-right:2px solid #4a4a4a}
.fcol:last-child{border-right:0}
.fcol dt{margin-bottom:12px;font-family:var(--serif);font-size:16px;font-weight:700;letter-spacing:.12em;color:var(--g)}
.fcol dd{margin:0 0 6px;font-size:16px;line-height:1.5}
.fcol dd a{display:inline-flex;align-items:center;min-height:42px;color:var(--w);text-decoration:none;border-bottom:2px solid transparent}
.fcol dd a:hover,.fcol dd a:focus{color:var(--g);border-bottom-color:var(--g)}
.ftag{margin:0 0 12px;font-family:var(--serif);font-size:16px;font-weight:700;letter-spacing:.12em;color:var(--g)}
.flabel{display:block;margin-bottom:6px;font-size:15px}
.finput{width:100%;min-height:46px;padding:8px 10px;border:3px solid var(--w);background:var(--k);color:var(--w);font:inherit;font-size:16px}
.finput::placeholder{color:#a8a8a8}
.fbtn{width:100%;min-height:46px;margin-top:10px;border:3px solid var(--g);background:var(--g);color:var(--k);font:inherit;font-weight:700;font-size:16px;cursor:pointer}
.fbtn:hover,.fbtn:focus{background:var(--b);border-color:var(--w);color:var(--w)}
.copy{margin:0;padding:14px 18px;border-top:2px solid #4a4a4a;font-size:15px;letter-spacing:.08em}
.copy span{color:var(--g)}

[data-stagger] > *{opacity:1}
@media (prefers-reduced-motion: no-preference){
  [data-stagger] > *{opacity:0}
  [data-stagger].is-in > *{animation:stepIn .3s steps(6) both;animation-delay:calc(var(--i,0) * 70ms)}
  @keyframes stepIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
}

@media (max-width:860px){
  .navmenu{flex-direction:column}
  .navmenu > li{flex:none;border-right:0}
  .navlink{justify-content:flex-start;padding:8px 16px}
  .hero{grid-template-columns:1fr;min-height:0}
  .hero-art{min-height:170px;border-left:0;border-top:5px solid var(--k);padding:16px 16px 16px 30px}
  .hero-img{max-height:240px}
  .spread{grid-template-columns:1fr}
  .rail{border-right:0;border-bottom:5px solid var(--k);padding-bottom:18px}
  .raillist{flex-direction:row;flex-wrap:wrap;gap:10px;padding:14px}
  .raillist > li{flex:1 1 44%}
  .body-shell{padding:26px 18px 56px}
  .footcols{grid-template-columns:1fr 1fr}
  .fcol{border-right:2px solid #4a4a4a;border-bottom:2px solid #4a4a4a}
  .fcol:nth-child(2n){border-right:0}
}

@media (max-width:520px){
  .footcols{grid-template-columns:1fr}
  .fcol{border-right:0}
  .hero-copy{padding:22px 16px}
  .raillist > li{flex:1 1 100%}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .railcard:hover{transform:none;box-shadow:none}
}

button[aria-expanded]{min-width:44px;min-height:44px}