/* ==========================================================================
   site.css — 九游娱乐主站 共享外壳与基础组件
   深海夜蓝 / 电光青 / 行动橙红 / 奶油纸
   ========================================================================== */

:root{
  --ink-950:#050F18;
  --ink-900:#081826;
  --ink-800:#12324A;
  --ink-700:#0B2033;
  --cyan:#16E0C8;
  --cyan-deep:#0F7F73;
  --orange:#FF5A36;
  --violet:#A78BFA;
  --cream:#F5EBDD;
  --cream-2:#FFFDF8;
  --brown:#241B17;
  --mist:#DDF7F2;
  --amber:#FFC857;

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --shell-w:1280px;
  --gutter:24px;
  --angle:8deg;
}

/* ---------- reset ---------- */
*,
*::before,
*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}

body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--brown);
  background:var(--cream);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0;}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.18;
  letter-spacing:-.01em;
}

ul,ol{margin:0;padding:0;list-style:none;}

img,svg,video{display:block;max-width:100%;height:auto;}

a{color:inherit;}

button{font:inherit;color:inherit;}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  box-shadow:0 0 0 4px rgba(22,224,200,.22);
}

.visually-hidden{
  position:absolute !important;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
}

/* ---------- 容器 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-w);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.page-main{display:block;}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  left:14px;
  top:-90px;
  z-index:1000;
  padding:11px 20px;
  background:var(--cyan);
  color:var(--ink-950);
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  text-decoration:none;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
  transition:top .18s ease;
}
.skip-link:focus{top:14px;}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  color:var(--cream);
  background:var(--ink-900);
  isolation:isolate;
  box-shadow:0 1px 0 rgba(22,224,200,.2);
  transition:box-shadow .24s ease;
}
.site-header[data-scrolled]{
  box-shadow:0 16px 34px -22px rgba(0,0,0,.95),0 1px 0 rgba(22,224,200,.34);
}
.site-header::before{
  content:"";
  position:absolute;
  top:0;right:0;left:0;
  height:2px;
  z-index:3;
  background:linear-gradient(90deg,var(--cyan) 0%,rgba(22,224,200,0) 46%,rgba(167,139,250,.8) 74%,var(--orange) 100%);
}

/* ---- 上层：品牌 + 状态 + 行动 ---- */
.header-utility{
  position:relative;
  border-bottom:1px solid rgba(245,235,221,.1);
  background-image:
    repeating-linear-gradient(90deg,rgba(245,235,221,.045) 0 1px,transparent 1px 64px),
    linear-gradient(118deg,rgba(22,224,200,.11) 0%,rgba(22,224,200,0) 42%,rgba(167,139,250,.09) 100%);
}
.header-utility__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px 22px;
  padding-block:14px;
  transition:padding .24s ease;
}
.site-header[data-scrolled] .header-utility__inner{padding-block:8px;}

/* ---- 品牌标记 ---- */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 1 auto;
  min-width:0;
  color:inherit;
  text-decoration:none;
}
.brand__mark{
  position:relative;
  flex:0 0 auto;
  width:40px;
  height:40px;
  display:grid;
  place-items:center;
  border:1px solid rgba(22,224,200,.5);
  background:linear-gradient(135deg,rgba(22,224,200,.2),rgba(167,139,250,.14));
  transform:skewX(-8deg);
  transition:border-color .2s ease,background .2s ease;
}
.brand:hover .brand__mark{
  border-color:var(--cyan);
  background:linear-gradient(135deg,rgba(22,224,200,.36),rgba(167,139,250,.2));
}
.brand__slash{
  position:absolute;
  top:5px;bottom:5px;left:50%;
  width:2px;
  transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(22,224,200,.9),rgba(22,224,200,0));
}
.brand__dot{
  width:8px;height:8px;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(22,224,200,.9);
  transform:skewX(8deg);
}
.brand__text{
  display:flex;
  flex-direction:column;
  gap:3px;
  min-width:0;
}
.brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:19px;
  line-height:1.05;
  letter-spacing:.02em;
  color:var(--cream);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.brand__tagline{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:rgba(22,224,200,.82);
  white-space:nowrap;
  overflow:hidden;
  max-height:20px;
  opacity:1;
  transition:max-height .24s ease,opacity .2s ease;
}
.site-header[data-scrolled] .brand__tagline{
  max-height:0;
  opacity:0;
}

/* ---- 状态灯 ---- */
.header-status{
  display:flex;
  align-items:center;
  gap:14px;
  margin-left:auto;
}
.status-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border:1px solid rgba(22,224,200,.35);
  background:rgba(22,224,200,.08);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--mist);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%);
}
.status-pill__lamp{
  flex:0 0 auto;
  width:7px;height:7px;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(22,224,200,.18);
  animation:lampPulse 2.6s ease-in-out infinite;
}
.status-pill__text{white-space:nowrap;}

@keyframes lampPulse{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:.4;transform:scale(.86);}
}

/* ---- 行动按钮 ---- */
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border:1px solid transparent;
  border-radius:0;
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  text-decoration:none;
  white-space:nowrap;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn--solid{
  background:var(--orange);
  color:#1A0F0A;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);
}
.btn--solid:hover{background:#FF7555;transform:translateY(-1px);}
.btn--solid:active{transform:translateY(0);}
.btn--ghost{
  background:transparent;
  color:var(--cream);
  border-color:rgba(245,235,221,.3);
}
.btn--ghost:hover{
  border-color:var(--cyan);
  color:var(--cyan);
  background:rgba(22,224,200,.08);
}

/* ---- 下层：栏目轨道 ---- */
.header-nav{
  background:linear-gradient(180deg,rgba(11,32,51,.98),rgba(8,24,38,.98));
  border-top:1px solid rgba(245,235,221,.06);
}
.header-nav__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:0;
}
.nav{
  flex:1 1 auto;
  min-width:0;
}
.nav__list{
  display:flex;
  flex-wrap:wrap;
  margin:0;
  padding:0;
  list-style:none;
}
.nav__link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  padding:15px 18px;
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.02em;
  color:rgba(245,235,221,.7);
  text-decoration:none;
  transition:color .18s ease,background-color .18s ease;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:18px;right:18px;bottom:0;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav__link:hover{
  color:var(--cream);
  background:rgba(22,224,200,.07);
}
.nav__link:hover::after{transform:scaleX(1);}
.nav__link[aria-current="page"]{color:var(--cyan);}
.nav__link[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--orange);
}
.nav__index{
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:500;
  letter-spacing:.12em;
  color:rgba(22,224,200,.5);
  transition:color .18s ease;
}
.nav__link:hover .nav__index,
.nav__link[aria-current="page"] .nav__index{color:var(--cyan);}

/* ---- 移动导航按钮 ---- */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  background:transparent;
  border:1px solid rgba(22,224,200,.4);
  color:var(--cream);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.16em;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.nav-toggle:hover{
  border-color:var(--cyan);
  background:rgba(22,224,200,.1);
}
.nav-toggle__bars{
  display:grid;
  gap:4px;
  width:16px;
}
.nav-toggle__bars > span{
  display:block;
  height:2px;
  background:var(--cyan);
  transition:transform .2s ease,opacity .2s ease;
}
.site-header[data-open] .nav-toggle__bars > span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.site-header[data-open] .nav-toggle__bars > span:nth-child(2){opacity:0;}
.site-header[data-open] .nav-toggle__bars > span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.nav-toggle__text{line-height:1;}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{
  position:relative;
  color:rgba(245,235,221,.78);
  background-color:var(--ink-950);
  background-image:
    repeating-linear-gradient(90deg,rgba(245,235,221,.035) 0 1px,transparent 1px 72px),
    repeating-linear-gradient(0deg,rgba(245,235,221,.03) 0 1px,transparent 1px 72px),
    linear-gradient(180deg,#0B2033 0%,#081826 44%,#050F18 100%);
  border-top:1px solid rgba(22,224,200,.22);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;right:0;left:0;
  height:2px;
  background:linear-gradient(90deg,var(--orange) 0%,rgba(255,90,54,0) 28%,rgba(22,224,200,0) 62%,var(--cyan) 100%);
}

.footer-top__inner{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1.15fr) minmax(0,.95fr);
  gap:48px;
  padding-block:clamp(48px,6vw,80px) clamp(36px,4vw,56px);
}

.footer-brand{min-width:0;}
.brand--footer .brand__name{font-size:20px;}
.brand--footer .brand__tagline{color:rgba(22,224,200,.8);}

.footer-brand__line{
  margin-top:18px;
  max-width:36ch;
  font-size:14px;
  line-height:1.85;
  color:rgba(245,235,221,.6);
}

.footer-facts{
  margin-top:24px;
  display:grid;
  gap:0;
  border-top:1px solid rgba(245,235,221,.14);
}
.footer-facts li{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding-block:10px;
  border-bottom:1px solid rgba(245,235,221,.09);
}
.footer-facts__key{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:rgba(245,235,221,.42);
}
.footer-facts__val{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--cyan);
}

.footer-cols{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:32px;
  min-width:0;
}
.footer-col{min-width:0;}
.footer-col__title,
.footer-contact__title{
  margin:0 0 18px;
  font-family:var(--font-mono);
  font-weight:600;
  font-size:11.5px;
  line-height:1.4;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-col__list{
  display:grid;
  gap:12px;
}
.footer-col__link{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:14.5px;
  color:rgba(245,235,221,.76);
  text-decoration:none;
  transition:color .18s ease;
}
.footer-col__link::before{
  content:"";
  flex:0 0 auto;
  width:10px;
  height:1px;
  background:var(--orange);
  transition:width .18s ease,background-color .18s ease;
}
.footer-col__link:hover{color:var(--cream);}
.footer-col__link:hover::before{width:20px;background:var(--cyan);}

.footer-contact{min-width:0;}
.footer-contact__list{
  display:grid;
  gap:16px;
}
.footer-contact__label{
  display:block;
  margin-bottom:3px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.16em;
  color:rgba(245,235,221,.4);
}
.footer-contact__value{
  display:block;
  font-size:14px;
  line-height:1.65;
  color:var(--cream);
  word-break:break-word;
}
.footer-contact__note{
  margin-top:20px;
  padding:12px 14px;
  border-left:2px solid var(--amber);
  background:rgba(255,200,87,.07);
  font-size:12.5px;
  line-height:1.8;
  color:rgba(245,235,221,.66);
}

.footer-bottom{
  border-top:1px solid rgba(245,235,221,.1);
  background:rgba(0,0,0,.24);
}
.footer-bottom__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding-block:20px;
}
.footer-legal{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:rgba(245,235,221,.5);
}
.footer-legal__icp{color:rgba(245,235,221,.74);}
.footer-legal__links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
}
.footer-legal__link{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:rgba(245,235,221,.58);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer-legal__link:hover{
  color:var(--cyan);
  border-bottom-color:var(--cyan);
}

/* ==========================================================================
   通用基础组件
   ========================================================================== */
.section{
  position:relative;
  padding-block:clamp(48px,7vw,96px);
}
.section__head{
  max-width:64ch;
  margin-bottom:clamp(28px,4vw,48px);
}

.grid{display:grid;gap:24px;}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr));}

.surface{
  padding:clamp(20px,3vw,32px);
  border:1px solid rgba(36,27,23,.16);
  background:var(--cream-2);
  color:var(--brown);
}
.surface--dark{
  background:var(--ink-800);
  border-color:rgba(22,224,200,.25);
  color:var(--cream);
}
.surface--paper{
  background:var(--cream);
  border-color:rgba(36,27,23,.18);
  color:var(--brown);
}
.surface--cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;
  background:var(--orange);
}
.eyebrow--dark{color:var(--cyan-deep);}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid rgba(36,27,23,.22);
  background:rgba(245,235,221,.6);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:rgba(36,27,23,.75);
}
.tag--dark{
  border-color:rgba(22,224,200,.35);
  background:rgba(22,224,200,.1);
  color:var(--mist);
}
.tag--alert{
  border-color:rgba(255,90,54,.5);
  background:rgba(255,90,54,.14);
  color:#B32E12;
}

.rule{
  height:1px;
  border:0;
  margin:0;
  background:linear-gradient(90deg,var(--orange) 0%,rgba(36,27,23,.16) 32%,rgba(36,27,23,.16) 100%);
}

.prose{
  max-width:70ch;
  font-size:16.5px;
  line-height:1.85;
}
.prose p{margin:0 0 1.15em;}
.prose h2{
  margin:1.8em 0 .6em;
  font-size:clamp(24px,3vw,30px);
}
.prose h3{
  margin:1.5em 0 .5em;
  font-size:clamp(19px,2.2px + 1.2vw,22px);
}
.prose ul,
.prose ol{
  margin:0 0 1.15em;
  padding-left:1.4em;
  list-style:disc;
}
.prose ol{list-style:decimal;}
.prose li{margin-bottom:.4em;}
.prose strong{font-weight:700;}
.prose a{
  color:var(--cyan-deep);
  text-decoration:none;
  border-bottom:1px solid rgba(15,127,115,.35);
}
.prose a:hover{
  color:var(--orange);
  border-bottom-color:var(--orange);
}

.breadcrumbs{padding-block:18px;}
.breadcrumbs__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:rgba(36,27,23,.55);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px;}
.breadcrumbs__item[aria-current="page"]{color:rgba(36,27,23,.88);}
.breadcrumbs__link{
  color:inherit;
  text-decoration:none;
  transition:color .18s ease;
}
.breadcrumbs__link:hover{color:var(--orange);}
.breadcrumbs__sep{opacity:.45;}
.breadcrumbs--dark .breadcrumbs__list,
.breadcrumbs--dark .breadcrumbs__link{color:rgba(245,235,221,.58);}
.breadcrumbs--dark .breadcrumbs__item[aria-current="page"]{color:rgba(245,235,221,.9);}
.breadcrumbs--dark .breadcrumbs__link:hover{color:var(--cyan);}

.media-frame{
  position:relative;
  overflow:hidden;
  isolation:isolate;
  border:1px solid rgba(18,50,74,.4);
  background:var(--ink-800);
}
.media-frame__img{
  display:block;
  width:100%;
  aspect-ratio:16 / 10;
  object-fit:cover;
  background:linear-gradient(135deg,var(--ink-800),var(--ink-900));
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(22,224,200,.14);
}
.media-frame__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:10px 14px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:rgba(245,235,221,.82);
  background:linear-gradient(180deg,rgba(5,15,24,0),rgba(5,15,24,.88));
}

.scroll-progress{
  position:fixed;
  top:0;left:0;
  width:0;
  height:3px;
  z-index:999;
  pointer-events:none;
  background:linear-gradient(90deg,var(--cyan),var(--violet),var(--orange));
  transition:width .08s linear;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1024px){
  :root{--gutter:22px;}
  .header-utility__inner{gap:12px 18px;}
  .nav__link{padding:14px 14px;}
  .nav__link::after{left:14px;right:14px;}
}

@media (max-width:960px){
  .footer-top__inner{
    grid-template-columns:minmax(0,1fr) minmax(0,1fr);
    gap:36px;
  }
  .footer-brand{grid-column:1 / -1;}
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr));gap:20px;}
}

@media (max-width:860px){
  :root{--gutter:18px;}

  .header-utility__inner{padding-block:10px;gap:10px 14px;}
  .site-header[data-scrolled] .header-utility__inner{padding-block:7px;}
  .brand__mark{width:36px;height:36px;}
  .brand__name{font-size:17px;}
  .brand__tagline{display:none;}
  .status-pill{padding:5px 10px;font-size:10.5px;}
  .header-actions .btn--ghost{display:none;}
  .btn{padding:10px 16px;font-size:13.5px;}

  .header-nav__inner{padding-block:8px;}
  .nav-toggle{
    display:inline-flex;
    order:1;
    margin-left:auto;
  }
  .nav{
    order:2;
    flex:1 0 100%;
    display:none;
  }
  .site-header[data-open] .nav{display:block;}
  .nav__list{flex-direction:column;}
  .nav__link{
    width:100%;
    padding:14px 4px;
    border-bottom:1px solid rgba(245,235,221,.09);
  }
  .nav__link::after{left:4px;right:4px;bottom:0;}
}

@media (max-width:640px){
  .footer-top__inner{
    grid-template-columns:minmax(0,1fr);
    gap:32px;
    padding-block:44px 36px;
  }
  .footer-bottom__inner{
    flex-direction:column;
    align-items:flex-start;
  }
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .grid--12{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
  .breadcrumbs{padding-block:14px;}
}

@media (max-width:520px){
  .brand__name{font-size:16px;}
  .header-utility__inner{gap:8px 10px;}
  .btn{padding:9px 13px;font-size:13px;}
  .footer-cols{grid-template-columns:minmax(0,1fr);}
}

@media (max-width:420px){
  .status-pill{display:none;}
}

/* ==========================================================================
   动效可访问性
   ========================================================================== */
@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;
  }
  .scroll-progress{transition:none;}
  .status-pill__lamp{animation:none;opacity:1;}
}