/* ============================================================
   北都綠廊 · 貨流光帶 — base design system
   Hung Shui Kiu Modern Logistics Cluster · Site 2
   ============================================================ */

@font-face{
  font-family:"Manrope";
  src:url("../assets/fonts/manrope-latin.woff2") format("woff2-variations");
  font-weight:200 800;
  font-style:normal;
  font-display:swap;
}

:root{
  /* Color */
  --ink:#0B2233;
  --ink-2:#0F2C42;
  --ink-3:#17445F;
  --paper:#F6F9FB;
  --paper-2:#EAF2F7;
  --paper-3:#DEE9F1;
  --white:#FCFEFF;
  --gold:#C9A46A;
  --gold-2:#E3C48F;
  --gold-3:#8A6A3D;
  --teal:#1F7A6B;
  --teal-2:#6FC8B4;
  --muted:#5A6E7C;
  --line:rgba(11,34,51,.14);
  --line-soft:rgba(11,34,51,.08);
  --line-light:rgba(246,249,251,.14);
  --line-light-soft:rgba(246,249,251,.08);
  --danger:#A6473C;
  --sky:#4FA8DC;
  --sky-2:#8DD2F3;
  --sky-3:#DFF2FC;
  --navy:#0B2233;

  /* Type */
  --font:"Manrope","PingFang TC","PingFang HK","Noto Sans TC","Hiragino Sans GB","Microsoft JhengHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono:"SF Mono","JetBrains Mono",ui-monospace,Menlo,monospace;

  /* Layout */
  --shell:1320px;
  --header-h:76px;
  --radius:30px;
  --radius-sm:18px;

  /* Motion */
  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  background:var(--paper);
}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.65;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--gold-2);color:var(--ink)}
[id]{scroll-margin-top:calc(var(--header-h) + 24px)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:2px}
[hidden]{display:none !important}

/* ---------- shell + helpers ---------- */
.shell{
  width:min(var(--shell),calc(100% - 96px));
  margin-inline:auto;
}
.shell--narrow{width:min(1080px,calc(100% - 96px));margin-inline:auto}
.section-label{
  display:flex;align-items:center;gap:12px;
  font-size:10.5px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;
  color:var(--gold-3);
}
.section-label::before{
  content:"";width:22px;height:1px;background:currentColor;opacity:.65;flex:none;
}
.on-dark .section-label{color:var(--gold-2)}
.eyebrow{
  display:flex;align-items:center;gap:11px;
  font-size:10.5px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;
  color:var(--gold-3);
}
.eyebrow__dot{
  width:5px;height:5px;border-radius:50%;background:var(--gold);flex:none;
  box-shadow:0 0 0 4px rgba(201,164,106,.15);
}
.on-dark .eyebrow{color:var(--gold-2)}
.rule{height:1px;background:var(--line);border:0;margin:0}
.on-dark .rule{background:var(--line-light)}
.muted{color:var(--muted)}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0;
}
.skip-link{
  position:fixed;top:12px;left:12px;z-index:200;
  padding:12px 18px;border-radius:999px;background:var(--ink);color:var(--paper);
  font-size:13px;font-weight:600;transform:translateY(-160%);
  transition:transform .3s var(--ease);
}
.skip-link:focus{transform:none}

/* ---------- typography ---------- */
.display{
  font-weight:600;
  line-height:1.06;
  letter-spacing:-.02em;
  text-wrap:balance;
}
.display em{font-style:normal;color:var(--gold-2)}
.lead{
  font-size:clamp(16px,1.25vw,19px);
  line-height:1.85;
  color:var(--muted);
  text-wrap:pretty;
}
.on-dark .lead{color:rgba(246,249,251,.66)}

/* ---------- buttons ---------- */
.btn{
  position:relative;
  display:inline-flex;align-items:center;justify-content:center;gap:12px;
  height:54px;padding:0 30px;border-radius:999px;
  font-size:14px;font-weight:600;letter-spacing:.06em;line-height:1;
  white-space:nowrap;
  transition:transform .45s var(--ease),background-color .35s var(--ease),
             border-color .35s var(--ease),color .35s var(--ease),box-shadow .45s var(--ease);
}
.btn svg{width:15px;height:15px;flex:none;transition:transform .45s var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn--gold{background:var(--gold);color:#181008;box-shadow:0 10px 30px -12px rgba(201,164,106,.55)}
.btn--gold:hover{background:var(--gold-2);transform:translateY(-2px);box-shadow:0 18px 42px -14px rgba(201,164,106,.62)}
.btn--ink{background:var(--ink);color:var(--paper)}
.btn--ink:hover{background:var(--ink-3);transform:translateY(-2px)}
.btn--ghost{color:var(--paper);border:1px solid rgba(246,249,251,.34);background:rgba(246,249,251,.03);backdrop-filter:blur(8px)}
.btn--ghost:hover{border-color:rgba(246,249,251,.62);background:rgba(246,249,251,.08);transform:translateY(-2px)}
.btn--outline{color:var(--ink);border:1px solid rgba(11,34,51,.22)}
.btn--outline:hover{border-color:var(--ink);background:rgba(11,34,51,.04);transform:translateY(-2px)}
.btn--sm{height:42px;padding:0 20px;font-size:12px;letter-spacing:.08em}
.btn--lg{height:58px;padding:0 34px}
.btn[disabled],.btn[aria-disabled="true"]{opacity:.42;pointer-events:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:600;letter-spacing:.05em;
  border-bottom:1px solid rgba(11,34,51,.25);padding-bottom:5px;
  transition:border-color .3s var(--ease),gap .3s var(--ease);
}
.link-arrow svg{width:14px;height:14px;transition:transform .35s var(--ease)}
.link-arrow:hover{border-color:var(--ink);gap:13px}
.link-arrow:hover svg{transform:translateX(2px)}
.on-dark .link-arrow{border-color:rgba(246,249,251,.3)}
.on-dark .link-arrow:hover{border-color:var(--gold-2)}

/* ---------- header ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:80;
  height:var(--header-h);
  display:flex;align-items:center;
  border-bottom:1px solid transparent;
  transition:background-color .45s var(--ease),backdrop-filter .45s var(--ease),
             border-color .45s var(--ease),color .45s var(--ease);
}
.site-header[data-theme="dark"]{color:var(--paper)}
.site-header[data-theme="dark"].is-solid{
  background:rgba(7,17,14,.74);
  -webkit-backdrop-filter:blur(20px) saturate(1.25);
  backdrop-filter:blur(20px) saturate(1.25);
  border-bottom-color:rgba(246,249,251,.1);
}
.site-header[data-theme="light"]{
  color:var(--ink);
  background:rgba(252,254,255,.9);
  -webkit-backdrop-filter:blur(20px) saturate(1.15);
  backdrop-filter:blur(20px) saturate(1.15);
  border-bottom-color:rgba(11,34,51,.1);
}
.header__inner{
  width:min(var(--shell),calc(100% - 64px));
  margin-inline:auto;
  display:flex;align-items:center;gap:34px;
}
.brand{display:flex;align-items:center;gap:13px;flex:none}
.brand__mark{width:30px;height:30px;flex:none;overflow:visible}
.brand__mark .mark-gold{stroke:var(--gold)}
.brand__mark .mark-teal{stroke:var(--teal-2)}
[data-theme="light"] .brand__mark .mark-teal{stroke:var(--teal)}
.brand__text{display:flex;flex-direction:column;gap:3px;line-height:1}
.brand__zh{font-size:17px;font-weight:700;letter-spacing:.16em}
.brand__sub{font-size:8px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;opacity:.5}
[data-theme="light"] .brand__sub{opacity:.55}
.nav{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav a{
  position:relative;font-size:12.5px;font-weight:500;letter-spacing:.1em;
  padding:6px 0;opacity:.88;
}
.nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:currentColor;opacity:.75;
  transform:scaleX(0);transform-origin:right;
  transition:transform .45s var(--ease);
}
.nav a:hover{opacity:1}
.nav a:hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1);transform-origin:left}
.nav a[aria-current="page"]{opacity:1}
.header__end{display:flex;align-items:center;gap:22px;flex:none}
.lang{display:flex;align-items:center;gap:6px;font-size:11px;font-weight:600;letter-spacing:.08em}
.lang button{opacity:.45;padding:4px 1px;transition:opacity .3s var(--ease),color .3s var(--ease)}
.lang button:hover{opacity:.8}
.lang button.is-active{opacity:1;color:var(--gold-2)}
[data-theme="light"] .lang button.is-active{color:var(--gold-3)}
.lang__sep{opacity:.25}
.header__cta{height:40px;padding:0 21px;font-size:11.5px;letter-spacing:.09em}
.nav-toggle{display:none;width:42px;height:42px;place-items:center;border-radius:50%;border:1px solid currentColor;color:inherit}
.nav-toggle span{display:block;width:16px;height:1px;background:currentColor;position:relative;transition:transform .4s var(--ease),background-color .3s}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1px;background:currentColor;
  transition:transform .4s var(--ease),top .4s var(--ease);
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

/* mobile drawer */
.drawer{
  position:fixed;inset:0;z-index:70;
  background:var(--ink);color:var(--paper);
  display:flex;flex-direction:column;justify-content:center;
  padding:calc(var(--header-h) + 28px) 32px 44px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .45s var(--ease),visibility .45s,transform .45s var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer__nav{display:flex;flex-direction:column;gap:6px}
.drawer__nav a{
  display:flex;align-items:baseline;justify-content:space-between;gap:20px;
  padding:16px 0;border-bottom:1px solid rgba(246,249,251,.12);
  font-size:clamp(24px,7vw,34px);font-weight:600;letter-spacing:.02em;
}
.drawer__nav a span{font-size:10px;letter-spacing:.2em;color:var(--gold-2);opacity:.75}
.drawer__foot{margin-top:auto;padding-top:34px;display:flex;flex-direction:column;gap:18px}
.drawer__lang{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em}
.drawer__lang button{opacity:.45;padding:4px 2px;color:inherit;transition:opacity .3s,color .3s}
.drawer__lang button.is-active{opacity:1;color:var(--gold-2)}
.drawer__lang button:hover{opacity:.85}
.drawer__lang span{opacity:.25}
.drawer__foot p{font-size:11px;line-height:1.8;letter-spacing:.05em;color:rgba(246,249,251,.45)}
.drawer .btn{width:100%}

/* ---------- footer ---------- */
.site-footer{
  background:linear-gradient(180deg,var(--paper) 0%,var(--paper-2) 100%);
  color:var(--ink);
  padding:64px 0 30px;position:relative;
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,164,106,.55),transparent);
}
.footer__top{
  display:grid;grid-template-columns:1.1fr 1.3fr 1fr;gap:48px;
  padding-bottom:46px;border-bottom:1px solid var(--line);
}
.footer__brand{display:flex;align-items:flex-start;gap:14px}
.footer__brand .mark-teal{stroke:var(--teal)}
.footer__brand .mark-gold{stroke:var(--gold-3)}
.footer__brand .brand__zh{font-size:20px}
.footer__brand .brand__sub{opacity:.42}
.footer__claim{margin-top:18px;font-size:12.5px;line-height:1.8;color:var(--muted);max-width:28ch}
.footer__disclaimer{font-size:11.5px;line-height:2;letter-spacing:.04em;color:var(--muted)}
.footer__disclaimer b{color:var(--gold-3);font-weight:600;letter-spacing:.08em}
.footer__links{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.footer__coord{width:100%;margin:0 0 4px;font-size:12.5px;line-height:1.7;letter-spacing:.04em;color:var(--ink)}
.footer__links a{font-size:12.5px;letter-spacing:.06em;color:var(--muted);transition:color .3s}
.footer__links a:hover{color:var(--ink)}
.footer__bottom{
  display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;justify-content:space-between;
  padding-top:26px;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:rgba(11,34,51,.44);
}
.footer__bottom a{transition:color .3s;text-transform:none;letter-spacing:.04em}
.footer__bottom a:hover{color:var(--gold-3)}
.footer__meta{display:flex;flex-wrap:wrap;gap:12px 26px}

/* ---------- reveal ---------- */
.reveal{
  opacity:0;transform:translateY(26px);
  transition:opacity 1s var(--ease-out),transform 1s var(--ease-out);
  transition-delay:var(--d,0ms);
}
.reveal.is-in{opacity:1;transform:none}
.reveal-img img{clip-path:inset(0 0 100% 0);transition:clip-path 1.2s var(--ease-out)}
.reveal-img.is-in img{clip-path:inset(0 0 0 0)}

/* ---------- texture ---------- */
.grain{
  position:fixed;inset:0;z-index:90;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.42'/%3E%3C/svg%3E");
  mix-blend-mode:overlay;
}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .header__inner{width:calc(100% - 48px);gap:22px}
  .nav{gap:22px}
  .nav a{font-size:11.5px}
  .footer__top{grid-template-columns:1fr 1fr;gap:40px}
  .footer__links{grid-column:1/-1;flex-direction:row;flex-wrap:wrap;gap:24px}
}
@media (max-width:860px){
  :root{--header-h:66px}
  .shell,.shell--narrow{width:calc(100% - 40px)}
  .nav,.header__cta,.header__end .lang{display:none}
  .nav-toggle{display:grid}
  .header__end{margin-left:auto}
  .brand__sub{display:none}
  .brand__zh{font-size:15px;letter-spacing:.12em}
  .footer__top{grid-template-columns:1fr;gap:32px}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:14px}
  .site-footer{padding:48px 0 26px}
  .grain{opacity:.04}
}
@media (max-width:560px){
  .btn{height:50px;padding:0 24px;font-size:13px}
  .display{letter-spacing:-.01em}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal,.reveal-img{opacity:1;transform:none}
  .reveal-img img{clip-path:none}
}

/* print */
@media print{
  .site-header,.site-footer,.grain,.actnav,.scrollhint,.toolbar{display:none !important}
  body{background:#fff;color:#000}
}