/* ============================================================
   四喜娱乐主站 · 共享样式 /assets/site.css
   夜间计时器的精密感 × 江南纸本的秩序感
   ============================================================ */

/* ---------- 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,ul,ol{margin:0;}
ul,ol{padding:0;}
ul[class],ol[class]{list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
img,svg,video{display:block;max-width:100%;}
img{height:auto;}
address{font-style:normal;}
:focus-visible{outline:2px solid #D4A017;outline-offset:3px;border-radius:2px;}
::selection{background:rgba(200,16,46,.42);color:#FFF7F0;}

/* ---------- 2. tokens ---------- */
:root{
  --ink:#12141C;
  --ink-2:#181B26;
  --ink-3:#20242F;
  --red:#C8102E;
  --red-2:#8E0B20;
  --gold:#D4A017;
  --gold-2:#F0C75E;
  --jade:#3E8E7E;
  --paper:#F5EFE6;
  --paper-2:#E6DDCE;
  --text:#EFE9E0;
  --text-2:#A9AFBD;
  --text-3:#767D8D;
  --line:rgba(245,239,230,.14);
  --line-2:rgba(212,160,23,.32);
  --glass:rgba(18,20,28,.72);
  --maxw:1200px;
  --gut:clamp(18px,4vw,48px);
  --r-s:3px;
  --r-m:8px;
  --r-l:16px;
  --f-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --f-serif:"Songti SC","SimSun","Source Han Serif SC",Georgia,serif;
  --f-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --shadow:0 18px 48px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- 3. base ---------- */
body{
  min-height:100vh;
  color:var(--text);
  font-family:var(--f-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  background:
    radial-gradient(1200px 560px at 10% -10%, rgba(200,16,46,.17), transparent 62%),
    radial-gradient(1000px 460px at 92% 0%, rgba(212,160,23,.11), transparent 60%),
    linear-gradient(180deg,#12141C 0%,#101219 46%,#0D0F16 100%);
  background-attachment:fixed;
}
#main-content{display:block;scroll-margin-top:140px;}

/* ---------- 4. layout ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut);}
.container--wide{max-width:1360px;}
.container--narrow{max-width:840px;}
.section{padding-block:clamp(40px,6.5vw,84px);}
.section--tight{padding-block:clamp(24px,3.6vw,46px);}
.section--paper{
  color:#22252E;
  background:linear-gradient(180deg,var(--paper) 0%,var(--paper-2) 100%);
  border-block:1px solid rgba(18,20,28,.14);
}
.section--paper .section-head{border-bottom-color:rgba(18,20,28,.16);}
.section--paper .section-head__title,
.section--paper .panel__title,
.section--paper .footer-col__title{color:#12141C;}
.section--paper .section-head__meta{color:#6C7280;}
.section--paper .eyebrow{color:var(--red-2);}
.section--paper .prose{color:#3B404B;}
.section--paper .prose strong{color:#12141C;}
.grid{display:grid;gap:clamp(16px,2.4vw,32px);grid-template-columns:minmax(0,1fr);}
.grid--asym{grid-template-columns:minmax(0,1fr);}
.grid--duo{grid-template-columns:minmax(0,1fr);}
.grid--trio{grid-template-columns:minmax(0,1fr);}
@media (min-width:720px){
  .grid--duo{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:900px){
  .grid--asym{grid-template-columns:minmax(190px,250px) minmax(0,1fr);gap:clamp(24px,3.6vw,52px);}
  .grid--trio{grid-template-columns:repeat(3,minmax(0,1fr));}
}

/* ---------- 5. type helpers ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--f-mono);font-size:11.5px;line-height:1;
  letter-spacing:.28em;text-transform:uppercase;color:var(--gold);
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:14px;padding-bottom:14px;margin-bottom:clamp(20px,3vw,34px);
  border-bottom:1px solid var(--line);
}
.section-head__title{
  font-family:var(--f-serif);font-size:clamp(22px,3.4vw,34px);
  line-height:1.22;letter-spacing:.04em;color:var(--paper);
}
.section-head__meta{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.18em;color:var(--text-3);}
.display-num{
  display:inline-flex;align-items:baseline;gap:8px;
  font-family:var(--f-mono);font-weight:700;letter-spacing:-.02em;
  font-size:clamp(40px,7vw,76px);line-height:1;color:var(--paper);
}
.display-num__unit{font-size:clamp(12px,1.4vw,15px);font-weight:400;letter-spacing:.16em;color:var(--gold);}
.prose{font-size:16px;line-height:1.95;color:var(--text-2);}
.prose p{margin-bottom:1.05em;}
.prose h2,.prose h3{font-family:var(--f-serif);color:var(--paper);letter-spacing:.03em;margin:1.5em 0 .6em;}
.prose ul,.prose ol{list-style:disc;padding-left:1.15em;margin-bottom:1.05em;}
.prose li{margin-bottom:.35em;}
.prose strong{color:var(--paper);font-weight:600;}
.prose a{border-bottom:1px solid var(--line-2);color:var(--gold);}

/* ---------- 6. surfaces & atoms ---------- */
.panel{
  background:rgba(32,36,47,.5);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  padding:clamp(18px,2.4vw,28px);
}
.panel--glass{
  background:linear-gradient(150deg,rgba(245,239,230,.075),rgba(18,20,28,.52));
  border-color:var(--line-2);
  backdrop-filter:blur(10px);
}
.panel__title{
  font-family:var(--f-serif);font-size:clamp(17px,2vw,21px);
  line-height:1.35;letter-spacing:.04em;color:var(--paper);margin-bottom:.5em;
}
.tag{
  display:inline-block;padding:3px 10px;border:1px solid var(--line);border-radius:999px;
  font-family:var(--f-mono);font-size:11px;line-height:1.6;letter-spacing:.14em;color:var(--text-2);
}
.tag--gold{border-color:var(--line-2);color:var(--gold);background:rgba(212,160,23,.07);}
.tag--jade{border-color:rgba(62,142,126,.5);color:#85CCBC;background:rgba(62,142,126,.1);}
.note{
  font-family:var(--f-mono);font-size:12px;line-height:1.9;letter-spacing:.05em;
  color:var(--text-3);padding-left:14px;border-left:2px solid var(--line-2);
}
.note--rule{border-left-color:var(--red);}

/* ---------- 7. buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 22px;border-radius:var(--r-s);border:1px solid transparent;
  font-size:14.5px;letter-spacing:.1em;line-height:1.2;
  transition:background-color .22s var(--ease),color .22s var(--ease),
             border-color .22s var(--ease),transform .22s var(--ease);
}
.btn--solid{
  background:linear-gradient(140deg,var(--red),var(--red-2));
  color:#FFF5EE;border-color:rgba(212,160,23,.45);
  box-shadow:0 10px 26px rgba(200,16,46,.3);
}
.btn--solid:hover{transform:translateY(-1px);}
.btn--outline{border-color:var(--line-2);color:var(--gold);background:rgba(212,160,23,.06);}
.btn--outline:hover{background:rgba(212,160,23,.15);color:var(--gold-2);}
.btn--ghost{border-color:var(--line);color:var(--text-2);}
.btn--ghost:hover{color:var(--paper);border-color:var(--paper);}
.btn-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}

/* ---------- 8. breadcrumbs / table / media ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--f-mono);font-size:11.5px;letter-spacing:.16em;color:var(--text-3);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px;}
.breadcrumbs__item a:hover,.breadcrumbs__item a:focus-visible{color:var(--paper);}
.breadcrumbs__item [aria-current="page"]{color:var(--paper);}
.breadcrumbs__sep{color:var(--gold);}
.ledger-table{width:100%;border-collapse:collapse;font-size:14.5px;}
.ledger-table th,.ledger-table td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;}
.ledger-table th{
  font-family:var(--f-mono);font-size:11.5px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--gold);
}
.ledger-table td{color:var(--text-2);}
.ledger-table tbody tr:hover{background:rgba(245,239,230,.035);}
.media-frame{
  margin:0;overflow:hidden;border:1px solid var(--line-2);border-radius:var(--r-m);
  background:linear-gradient(150deg,var(--ink-3),var(--ink-2));
}
.media-frame__inner{
  position:relative;width:100%;aspect-ratio:16/10;overflow:hidden;
  background-image:
    repeating-linear-gradient(45deg,rgba(245,239,230,.045) 0 8px,transparent 8px 16px),
    radial-gradient(120% 90% at 12% 0%,rgba(212,160,23,.16),transparent 62%);
}
.media-frame__inner img{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(.82) contrast(1.05) brightness(.96);
}
.media-frame__inner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(212,160,23,.22),inset 0 -48px 64px rgba(18,20,28,.42);
}
.media-frame__cap{
  padding:10px 14px;border-top:1px dashed var(--line);
  font-family:var(--f-mono);font-size:11.5px;letter-spacing:.12em;color:var(--text-3);
}
.media-frame--wide .media-frame__inner{aspect-ratio:21/9;}
.media-frame--tall .media-frame__inner{aspect-ratio:3/4;}

/* ---------- 9. fold ---------- */
.fold{
  border:1px solid var(--line);border-radius:var(--r-m);
  background:var(--glass);overflow:hidden;
}
.fold + .fold{margin-top:10px;}
.fold__trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;text-align:left;font-size:15.5px;line-height:1.5;color:var(--text);
}
.fold__trigger::after{
  content:"＋";flex:none;font-family:var(--f-mono);font-size:14px;color:var(--gold);
  transition:transform .25s var(--ease);
}
.fold__trigger:hover{background:rgba(245,239,230,.04);}
.fold__trigger[aria-expanded="true"]::after{transform:rotate(45deg);}
.fold__panel{padding:0 18px 18px;font-size:15px;line-height:1.9;color:var(--text-2);}
.fold__panel[hidden]{display:none;}

/* ---------- 10. header ---------- */
.skip-link{
  position:fixed;left:14px;top:-70px;z-index:200;
  padding:10px 18px;border-radius:var(--r-s);
  background:var(--red);color:#FFF6EE;
  font-size:14px;letter-spacing:.1em;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:14px;}
.site-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,rgba(18,20,28,.97),rgba(18,20,28,.88));
  backdrop-filter:blur(14px) saturate(1.2);
  border-bottom:1px solid var(--line-2);
}
.scroll-progress{
  position:absolute;left:0;top:0;z-index:3;height:3px;width:100%;
  background:linear-gradient(90deg,var(--red),var(--gold));
  transform:scaleX(0);transform-origin:0 50%;pointer-events:none;
}
.ledger{
  overflow:hidden;max-height:46px;
  border-bottom:1px solid var(--line);
  transition:max-height .3s var(--ease),opacity .3s var(--ease),border-color .3s var(--ease);
}
.ledger__inner{
  width:100%;max-width:var(--maxw);margin-inline:auto;
  padding:9px var(--gut);
  display:flex;align-items:center;gap:14px;
  font-family:var(--f-mono);font-size:11px;line-height:1;
  letter-spacing:.16em;text-transform:uppercase;color:var(--text-3);
}
.ledger__item{white-space:nowrap;}
.ledger__item--muted{color:rgba(212,160,23,.78);}
.ledger__item--end{color:var(--text-3);}
.ledger__rule{
  flex:1;height:1px;
  background:repeating-linear-gradient(90deg,var(--line-2) 0 6px,transparent 6px 12px);
}
.masthead__inner{
  width:100%;max-width:var(--maxw);margin-inline:auto;
  padding:18px var(--gut);
  display:flex;align-items:center;justify-content:center;gap:18px;
  transition:padding .3s var(--ease);
}
.brand{display:inline-flex;align-items:center;gap:14px;color:var(--text);}
.brand__seal{
  flex:none;width:44px;height:44px;display:grid;place-items:center;
  writing-mode:vertical-rl;
  font-family:var(--f-serif);font-size:15px;line-height:1;letter-spacing:.02em;
  color:#FFF6EA;
  background:linear-gradient(150deg,var(--red),var(--red-2));
  border:1px solid rgba(212,160,23,.55);border-radius:2px;
  box-shadow:0 6px 18px rgba(200,16,46,.34),inset 0 0 0 3px rgba(18,20,28,.34);
  transition:width .3s var(--ease),height .3s var(--ease),font-size .3s var(--ease);
}
.brand__text{display:flex;flex-direction:column;line-height:1.3;}
.brand__name{
  font-family:var(--f-serif);font-weight:700;
  font-size:clamp(19px,2.4vw,25px);letter-spacing:.16em;color:var(--paper);
  transition:font-size .3s var(--ease);
}
.brand__tag{
  font-family:var(--f-mono);font-size:10.5px;letter-spacing:.32em;
  text-transform:uppercase;color:var(--gold);
}
.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 12px;border:1px solid var(--line-2);border-radius:var(--r-s);
  background:rgba(212,160,23,.07);color:var(--gold);
  font-family:var(--f-mono);font-size:11px;letter-spacing:.2em;
}
.nav-toggle__bars{display:grid;gap:4px;width:18px;}
.nav-toggle__bars i{
  display:block;height:1.5px;border-radius:2px;background:currentColor;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}
.nav-toggle__label{line-height:1;}
.primary-nav{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(32,36,47,.55),rgba(18,20,28,.18));
}
.nav-list{
  width:100%;max-width:var(--maxw);margin-inline:auto;padding:0 var(--gut);
  display:flex;flex-wrap:wrap;justify-content:center;gap:2px;
}
.nav-list__item{position:relative;}
.nav-link{
  position:relative;display:block;padding:13px 17px;
  font-size:14.5px;letter-spacing:.12em;color:var(--text-2);
  transition:color .22s var(--ease),background-color .22s var(--ease),padding .3s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:17px;right:17px;bottom:8px;height:2px;
  background:linear-gradient(90deg,var(--red),var(--gold));
  transform:scaleX(0);transform-origin:50% 50%;
  transition:transform .26s var(--ease);
}
.nav-link:hover,.nav-link:focus-visible{color:var(--paper);}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1);}
.nav-link[aria-current="page"]{
  color:var(--paper);font-weight:600;
  background:radial-gradient(80% 110% at 50% 130%,rgba(200,16,46,.3),transparent 70%);
}
.nav-link[aria-current="page"]::after{transform:scaleX(1);}
.site-header[data-scrolled="true"] .ledger{max-height:0;opacity:0;border-bottom-color:transparent;}
.site-header[data-scrolled="true"] .masthead__inner{padding-block:10px;}
.site-header[data-scrolled="true"] .brand__seal{width:34px;height:34px;font-size:12px;}
.site-header[data-scrolled="true"] .brand__name{font-size:19px;}
.site-header[data-scrolled="true"] .nav-link{padding-block:9px;}

/* ---------- 11. footer ---------- */
.site-footer{
  position:relative;margin-top:clamp(56px,8vw,110px);
  border-top:1px solid var(--line-2);
  background:linear-gradient(180deg,rgba(24,27,38,.92) 0%,#0D0F16 60%,#0A0C12 100%);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;height:2px;width:min(520px,62%);
  background:linear-gradient(90deg,var(--red),var(--gold) 55%,rgba(212,160,23,0));
}
.footer-grid{
  display:grid;gap:clamp(24px,3.6vw,52px);
  grid-template-columns:minmax(0,1.2fr) repeat(3,minmax(0,.62fr));
  padding-block:clamp(36px,5.5vw,68px);
}
.footer-brand__note{
  margin-top:14px;max-width:34ch;
  font-size:14px;line-height:1.85;color:var(--text-3);
}
.brand--footer .brand__seal{width:40px;height:40px;font-size:14px;}
.brand--footer .brand__name{font-size:19px;letter-spacing:.14em;}
.footer-col__title{
  padding-bottom:10px;margin-bottom:12px;border-bottom:1px dashed var(--line-2);
  font-family:var(--f-mono);font-size:11.5px;font-weight:500;
  letter-spacing:.24em;text-transform:uppercase;color:var(--gold);
}
.footer-list{display:grid;gap:9px;}
.footer-link{
  display:inline-block;font-size:14.5px;color:var(--text-2);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-link:hover,.footer-link:focus-visible{color:var(--paper);padding-left:6px;}
.footer-link[aria-current="page"]{color:var(--gold);}
.footer-contact{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(14px,2vw,26px);
  padding-block:clamp(22px,3vw,32px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.footer-contact__item{display:grid;gap:6px;align-content:start;}
.footer-contact__item--wide{grid-column:1 / -1;}
.footer-contact__key{
  font-family:var(--f-mono);font-size:11px;letter-spacing:.22em;color:var(--text-3);
}
.footer-contact__val{
  font-size:15px;line-height:1.6;color:var(--paper);word-break:break-word;
}
.footer-contact__note{
  grid-column:1 / -1;margin-top:4px;padding-left:12px;
  border-left:2px solid var(--line-2);
  font-size:13.5px;line-height:1.9;color:var(--text-3);
}
.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;padding-block:20px clamp(22px,3vw,30px);
  font-family:var(--f-mono);font-size:11.5px;letter-spacing:.14em;color:var(--text-3);
}
.footer-legal__copy{margin:0;}
.footer-legal__icp{color:var(--gold);}

/* ---------- 12. reveal ---------- */
html.has-js [data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .62s var(--ease),transform .62s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
  will-change:opacity,transform;
}
html.has-js [data-reveal].is-revealed{opacity:1;transform:none;}

/* ---------- 13. responsive ---------- */
@media (max-width:980px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-brand{grid-column:1 / -1;}
  .footer-contact{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:860px){
  #main-content{scroll-margin-top:110px;}
  .ledger__item--muted,.ledger__rule{display:none;}
  .ledger__item--end{margin-left:auto;}
  .masthead__inner{justify-content:space-between;padding-block:12px;}
  .nav-toggle{display:inline-flex;}
  .primary-nav{
    position:absolute;left:0;right:0;top:100%;
    max-height:0;overflow:hidden;visibility:hidden;
    background:rgba(16,18,25,.98);
    backdrop-filter:blur(16px);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line-2);
    box-shadow:var(--shadow);
    transition:max-height .3s var(--ease),visibility .3s var(--ease);
  }
  .primary-nav[data-open]{max-height:72vh;overflow-y:auto;visibility:visible;}
  .nav-list{flex-direction:column;align-items:stretch;padding:10px var(--gut) 22px;gap:0;}
  .nav-list__item{border-bottom:1px dashed var(--line);}
  .nav-list__item:last-child{border-bottom:0;}
  .nav-link{padding:15px 2px;font-size:16px;letter-spacing:.14em;}
  .nav-link::after{left:2px;right:auto;bottom:11px;width:26px;transform-origin:0 50%;}
  .nav-link[aria-current="page"]{background:none;}
  .site-header[data-scrolled="true"] .nav-link{padding-block:13px;}
  .brand__tag{letter-spacing:.22em;}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-contact{grid-template-columns:1fr;}
  .footer-legal{justify-content:flex-start;}
  .brand__seal{width:38px;height:38px;font-size:13px;}
  .brand__tag{font-size:9.5px;}
  .ledger__inner{font-size:10px;letter-spacing:.1em;}
}

/* ---------- 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;
  }
  html.has-js [data-reveal]{opacity:1;transform:none;}
  .nav-link::after{transform:scaleX(1);}
}