/* ============================================================
   澳门威斯人3775 中文站 · 共享样式 /assets/site.css
   夜航展览画册体系：深葡黑基底、澳门金展签、霓虹青状态、珊瑚橙动作
   ============================================================ */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit}
img,svg,picture{max-width:100%;height:auto}
button{font:inherit;color:inherit}
[hidden]{display:none!important}

/* ---------- 2. tokens ---------- */
:root{
  --ink:#0B0E13;
  --ink-soft:#11161D;
  --ink-lift:#161C24;
  --gold:#C9A227;
  --gold-warm:#E8C86A;
  --cyan:#28E0D0;
  --coral:#FF6B4A;
  --mist:#F4F1EA;
  --graphite:#2A3038;
  --slate:#7C8B8F;
  --teal:#0F3B3A;
  --line:rgba(244,241,234,.14);
  --line-strong:rgba(244,241,234,.28);
  --mist-70:rgba(244,241,234,.72);
  --mist-60:rgba(244,241,234,.62);
  --mist-40:rgba(244,241,234,.42);
  --font-display:"Songti SC","Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --font-body:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --shell:1480px;
  --gutter:clamp(16px,3.4vw,48px);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:.26s;
}

/* ---------- 3. base typography ---------- */
html{background-color:var(--ink)}
body{
  min-height:100vh;
  color:var(--mist);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.8;
  background-color:var(--ink);
  background-image:
    radial-gradient(900px 560px at 84% -10%, rgba(15,59,58,.62), transparent 64%),
    radial-gradient(640px 420px at 2% 6%, rgba(201,162,39,.12), transparent 62%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.12;
  letter-spacing:.01em;
  color:var(--mist);
}
h1{font-size:clamp(40px,6.4vw,88px)}
h2{font-size:clamp(28px,3.6vw,44px)}
h3{font-size:clamp(20px,2.2vw,26px)}
p{color:var(--mist-70)}
strong{color:var(--mist);font-weight:600}
::selection{background:var(--gold);color:var(--ink)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:0}

/* ---------- 4. shared layout ---------- */
.container{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(56px,8vw,120px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:.7em;
  font-size:12px;letter-spacing:.28em;color:var(--gold);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--gold);display:block}
.section-title{font-size:clamp(28px,3.6vw,44px);margin-top:.35em}
.lede{max-width:56ch;font-size:17px;color:var(--mist-60);margin-top:1.1em}
.rule{height:1px;background:var(--line);border:0;margin:0}
.note-vertical{
  writing-mode:vertical-rl;text-orientation:mixed;
  font-size:11px;letter-spacing:.34em;color:var(--mist-40);text-transform:uppercase;
}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,28px)}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}

/* ---------- 5. breadcrumb ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:.55em;
  font-size:12px;letter-spacing:.16em;color:var(--mist-40);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:.55em}
.breadcrumb li+li::before{content:"/";color:rgba(201,162,39,.7)}
.breadcrumb a{color:var(--mist-60);text-decoration:none;border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--gold-warm);border-bottom-color:var(--gold-warm)}
.breadcrumb .is-current{color:var(--gold-warm)}

/* ---------- 6. buttons / chips ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  padding:.82em 1.5em;border:1px solid var(--line-strong);
  background:transparent;color:var(--mist);
  font-size:14px;letter-spacing:.09em;text-decoration:none;cursor:pointer;
  border-radius:0;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn:hover{border-color:var(--gold-warm);color:var(--gold-warm);transform:translateY(-1px)}
.btn--gold{background:var(--gold);border-color:var(--gold);color:#0B0E13;font-weight:600}
.btn--gold:hover{background:var(--gold-warm);border-color:var(--gold-warm);color:#0B0E13}
.btn--coral{background:var(--coral);border-color:var(--coral);color:#180804;font-weight:600}
.btn--coral:hover{background:#FF8468;border-color:#FF8468;color:#180804}
.btn--ghost{color:var(--mist-60)}
.btn--ghost:hover{color:var(--cyan);border-color:rgba(40,224,208,.6)}

.filter-bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.chip{
  display:inline-flex;align-items:center;gap:.5em;
  padding:.5em 1em;border:1px solid var(--line);background:transparent;
  color:var(--mist-60);font-size:13px;letter-spacing:.1em;cursor:pointer;border-radius:0;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.chip:hover{color:var(--mist);border-color:var(--line-strong)}
.chip[aria-pressed="true"]{color:var(--cyan);border-color:rgba(40,224,208,.7);background:rgba(40,224,208,.08)}
.filter-status{font-size:12px;letter-spacing:.18em;color:var(--mist-40)}

/* ---------- 7. plate / tags ---------- */
.plate{
  position:relative;display:block;
  background:linear-gradient(180deg,rgba(22,28,36,.9),rgba(17,22,29,.9));
  border:1px solid var(--line);
  padding:clamp(18px,2.4vw,30px);
  text-decoration:none;color:inherit;
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.plate:hover{border-color:rgba(201,162,39,.72);transform:translateY(-3px);box-shadow:0 24px 48px -32px rgba(40,224,208,.5)}
.plate-index{display:block;font-family:var(--font-display);font-size:12px;letter-spacing:.24em;color:var(--gold);margin-bottom:.9em}
.tag-label{
  display:inline-block;padding:3px 9px;border:1px solid var(--line-strong);
  font-size:11px;letter-spacing:.2em;color:var(--mist-60);white-space:nowrap;
}
.tag-label--cyan{border-color:rgba(40,224,208,.55);color:var(--cyan)}
.tag-label--coral{border-color:rgba(255,107,74,.55);color:var(--coral)}
.tag-label--gold{border-color:rgba(201,162,39,.6);color:var(--gold-warm)}

/* ---------- 8. numbered list ---------- */
.list-index{display:grid;gap:14px}
.list-index>li{position:relative;padding-left:2.6em;color:var(--mist-70)}
.list-index>li::before{
  content:attr(data-index);position:absolute;left:0;top:.2em;
  font-family:var(--font-display);font-size:12px;letter-spacing:.14em;color:var(--gold);
}

/* ---------- 9. image frame protocol ---------- */
.img-frame{
  position:relative;display:block;overflow:hidden;
  border:1px solid var(--line);border-radius:0;
  background:
    radial-gradient(120% 120% at 18% 8%, rgba(40,224,208,.20), transparent 58%),
    radial-gradient(110% 110% at 88% 92%, rgba(255,107,74,.16), transparent 60%),
    linear-gradient(150deg,var(--teal) 0%, #101820 46%, #17130E 100%);
}
.img-frame::after{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;opacity:.55;
  background-image:
    linear-gradient(90deg,rgba(201,162,39,.16) 1px,transparent 1px),
    linear-gradient(0deg,rgba(40,224,208,.10) 1px,transparent 1px);
  background-size:38px 38px;
}
.img-frame>img,.img-frame>picture>img{
  position:relative;z-index:1;display:block;width:100%;height:100%;object-fit:cover;
}
.img-frame--wide{aspect-ratio:16/9}
.img-frame--tall{aspect-ratio:3/4}
.img-frame--square{aspect-ratio:1/1}
.img-frame__cap{
  position:absolute;left:12px;bottom:12px;z-index:3;
  font-size:11px;letter-spacing:.18em;color:var(--mist-60);
  background:rgba(11,14,19,.72);border:1px solid var(--line);padding:3px 8px;
}

/* ---------- 10. reveal ---------- */
html[data-reveal="on"] [data-reveal]{opacity:0;transform:translateY(16px)}
[data-reveal]{
  transition:opacity .34s var(--ease),transform .34s var(--ease);
}
[data-reveal].is-in{opacity:1;transform:none}
.is-filtered{opacity:.18}

/* ============================================================
   11. HEADER
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:linear-gradient(180deg,rgba(11,14,19,.97),rgba(11,14,19,.9));
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";position:absolute;left:0;top:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,162,39,.7),transparent);
}
.header-inner{
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding:16px var(--gutter);
  display:flex;align-items:center;gap:clamp(12px,2vw,30px);
  transition:padding var(--dur) var(--ease);
}
.site-header[data-scrolled="true"] .header-inner{padding-block:9px}

/* skip link */
.skip-link{
  position:absolute;left:12px;top:-120px;z-index:200;
  padding:10px 18px;background:var(--gold);color:#0B0E13;
  font-size:13px;letter-spacing:.08em;text-decoration:none;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:10px}

/* brand */
.brand{
  order:1;flex:0 0 auto;display:inline-flex;align-items:center;gap:10px;
  text-decoration:none;color:var(--mist);
}
.brand-index{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:46px;padding:4px 6px;border:1px solid var(--gold);
  font-family:var(--font-display);font-size:12px;letter-spacing:.16em;
  color:var(--gold-warm);
}
.brand-text{display:flex;flex-direction:column;gap:1px;line-height:1.25}
.brand-name{
  font-family:var(--font-display);font-weight:800;
  font-size:20px;letter-spacing:.03em;
  transition:font-size var(--dur) var(--ease);
}
.site-header[data-scrolled="true"] .brand-name{font-size:17px}
.brand-sub{font-size:10px;letter-spacing:.3em;color:var(--mist-40)}

/* nav */
.site-nav{order:2;flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.nav-list{display:flex;align-items:center;gap:clamp(8px,1.5vw,24px);flex-wrap:nowrap}
.nav-item{flex:0 0 auto}
.nav-link{
  position:relative;display:inline-flex;flex-direction:column;gap:2px;
  padding:9px 2px;text-decoration:none;
  font-size:14px;letter-spacing:.08em;color:var(--mist-60);
  transition:color var(--dur) var(--ease);
  white-space:nowrap;
}
.nav-num{font-size:9px;letter-spacing:.22em;color:rgba(201,162,39,.78);transition:color var(--dur) var(--ease)}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{color:var(--mist)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--gold-warm)}
.nav-link[aria-current="page"] .nav-num{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--gold-warm)}

/* utility */
.header-utility{
  order:3;flex:0 0 auto;display:flex;align-items:center;gap:clamp(8px,1.2vw,18px);
}
.util-link{
  font-size:13px;letter-spacing:.1em;color:var(--mist-70);text-decoration:none;
  padding:6px 0;border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.util-link:hover,.util-link:focus-visible{color:var(--cyan);border-bottom-color:var(--cyan)}
.util-cta{
  display:inline-flex;align-items:center;
  padding:9px 16px;background:var(--coral);color:#180804;
  font-size:13px;font-weight:600;letter-spacing:.08em;text-decoration:none;
  border:1px solid var(--coral);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.util-cta:hover{background:transparent;color:var(--coral);transform:translateY(-1px)}

/* toggle */
.nav-toggle{
  order:2;display:none;align-items:center;gap:9px;
  padding:8px 12px;background:transparent;
  border:1px solid var(--line-strong);color:var(--mist-70);
  font-size:12px;letter-spacing:.18em;cursor:pointer;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-toggle:hover{color:var(--cyan);border-color:rgba(40,224,208,.6)}
.nav-toggle-label{line-height:1}
.nav-toggle-bars{
  position:relative;display:block;width:16px;height:1px;background:currentColor;
  transition:transform var(--dur) var(--ease);
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:16px;height:1px;background:currentColor;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle-bars::before{top:-5px}
.nav-toggle-bars::after{top:5px}
.site-header[data-open="true"] .nav-toggle{color:var(--cyan);border-color:rgba(40,224,208,.7)}
.site-header[data-open="true"] .nav-toggle-bars{transform:rotate(45deg)}
.site-header[data-open="true"] .nav-toggle-bars::before{transform:translateY(5px) rotate(-90deg)}
.site-header[data-open="true"] .nav-toggle-bars::after{opacity:0}

/* progress */
.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;z-index:2;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--gold) 0%,var(--cyan) 58%,var(--coral) 100%);
}

/* ============================================================
   12. FOOTER
   ============================================================ */
.site-footer{
  position:relative;
  border-top:1px solid var(--line);
  background:
    radial-gradient(760px 420px at 88% 0%, rgba(15,59,58,.6), transparent 68%),
    linear-gradient(180deg,#0B0E13 0%,#0E1319 58%,#090C10 100%);
  padding-top:clamp(48px,6vw,92px);
  color:var(--mist-60);
}
.site-footer::before{
  content:"";position:absolute;left:0;top:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(201,162,39,.8),rgba(40,224,208,.35),transparent);
}
.footer-inner{
  width:100%;max-width:var(--shell);margin-inline:auto;
  padding-inline:var(--gutter);
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.7fr) minmax(0,.95fr);
  gap:clamp(28px,4vw,72px);
  padding-bottom:clamp(36px,5vw,64px);
}
.footer-brand{position:relative;padding-right:clamp(0px,3vw,48px)}
.footer-index{
  display:inline-block;padding:4px 10px;border:1px solid rgba(201,162,39,.55);
  font-family:var(--font-display);font-size:12px;letter-spacing:.2em;color:var(--gold-warm);
}
.footer-name{
  margin-top:18px;
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(22px,2.4vw,30px);line-height:1.2;color:var(--mist);
}
.footer-summary{margin-top:14px;max-width:34ch;font-size:14px;line-height:1.9;color:var(--mist-60)}
.footer-vertical{
  position:absolute;right:0;top:4px;
  writing-mode:vertical-rl;text-orientation:mixed;
  font-size:10px;letter-spacing:.34em;color:rgba(244,241,234,.28);
}

.footer-col{display:block;min-width:0}
.footer-title{
  position:relative;
  font-family:var(--font-body);font-weight:600;
  font-size:12px;letter-spacing:.26em;color:var(--gold);
  padding-top:14px;margin-bottom:20px;
}
.footer-title::before{
  content:"";position:absolute;left:0;top:0;width:28px;height:1px;background:var(--gold);
}
.footer-links{display:grid;gap:11px}
.footer-link{
  position:relative;display:inline-block;
  font-size:14px;letter-spacing:.06em;color:var(--mist-70);text-decoration:none;
  padding-left:14px;
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-link::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:1px;background:var(--slate);
  transition:background var(--dur) var(--ease),width var(--dur) var(--ease);
}
.footer-link:hover,.footer-link:focus-visible{color:var(--cyan);transform:translateX(2px)}
.footer-link:hover::before,.footer-link:focus-visible::before{background:var(--cyan);width:10px}

.contact-list{display:grid;gap:12px}
.contact-item{display:grid;gap:2px;border-bottom:1px solid rgba(244,241,234,.08);padding-bottom:9px}
.contact-key{font-size:11px;letter-spacing:.22em;color:var(--slate)}
.contact-val{font-size:14px;line-height:1.6;color:var(--mist-70);word-break:break-word}
.footer-cta{
  display:inline-block;margin-top:20px;
  font-size:13px;letter-spacing:.1em;color:var(--gold-warm);text-decoration:none;
  border-bottom:1px solid rgba(232,200,106,.5);padding-bottom:3px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-cta:hover,.footer-cta:focus-visible{color:var(--cyan);border-bottom-color:var(--cyan)}

.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;
  border-top:1px solid var(--line);
  padding-block:22px 26px;
}
.footer-copy{font-size:12px;letter-spacing:.05em;color:var(--mist-40)}
.footer-icp{color:var(--mist-60)}
.legal-links{display:flex;flex-wrap:wrap;gap:8px 20px}
.legal-link{
  font-size:12px;letter-spacing:.14em;color:var(--mist-40);text-decoration:none;
  transition:color var(--dur) var(--ease);
}
.legal-link:hover,.legal-link:focus-visible{color:var(--cyan)}

/* ============================================================
   13. responsive
   ============================================================ */
@media (max-width:1180px){
  .nav-list{gap:10px}
  .nav-link{font-size:13px;letter-spacing:.05em}
  .util-link{font-size:12px}
  .util-cta{padding:8px 12px;font-size:12px}
}

@media (max-width:1080px){
  .header-inner{flex-wrap:wrap;gap:10px 12px;padding-block:12px}
  .brand{order:1;flex:1 1 auto}
  .brand-sub{display:none}
  .nav-toggle{order:2;display:inline-flex}
  .header-utility{
    order:3;flex:1 0 100%;justify-content:space-between;gap:10px;
    border-top:1px solid var(--line);padding-top:10px;
  }
  .util-link{flex:1 1 0;text-align:center;padding:4px 0}
  .util-cta{flex:1 1 0;justify-content:center}
  .site-nav{
    order:4;flex:1 0 100%;display:none;justify-content:flex-start;
    border-top:1px solid var(--line);padding-top:8px;
  }
  .site-header[data-open="true"] .site-nav{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{border-bottom:1px solid rgba(244,241,234,.08)}
  .nav-item:last-child{border-bottom:0}
  .nav-link{
    flex-direction:row;align-items:center;gap:14px;
    padding:14px 2px;font-size:16px;letter-spacing:.06em;
  }
  .nav-num{font-size:10px;letter-spacing:.2em;min-width:2.2em}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{background:rgba(201,162,39,.07);padding-left:10px}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer-brand{grid-column:1 / -1;padding-right:0;padding-bottom:8px}
  .footer-vertical{position:static;writing-mode:horizontal-tb;margin-top:16px;letter-spacing:.24em}
}

@media (max-width:900px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-3,.span-4,.span-5,.span-6{grid-column:span 6}
  .span-8{grid-column:span 6}
}

@media (max-width:680px){
  body{font-size:16px;line-height:1.8}
  .brand-name{font-size:17px}
  .brand-index{min-width:40px;font-size:11px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .footer-legal{flex-direction:column;align-items:flex-start}
  .legal-links{gap:8px 16px}
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr))}
  .span-3,.span-4,.span-5,.span-6,.span-8{grid-column:span 2}
}

@media (max-width:420px){
  .header-inner{padding-inline:14px}
  .brand-index{display:none}
  .util-link{font-size:12px;letter-spacing:.08em}
}

/* ============================================================
   14. motion preferences
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  html[data-reveal="on"] [data-reveal]{opacity:1;transform:none}
  .plate:hover{transform:none}
  .btn:hover{transform:none}
}