/* =========================================================
   龙腾娱乐会馆 · 全站共享样式 /assets/site.css
   暖纸 + 墨黑 + 朱砂 + 赤金 · 门廊胶囊 + 档案柜页脚
   ========================================================= */

/* ---------- 1. 设计变量 ---------- */
:root{
  --paper:#F3E7D0;
  --paper-deep:#E4D3B4;
  --paper-soft:#F8F1E2;
  --ink:#14100C;
  --ink-soft:#2A211A;
  --cinnabar:#C43B2A;
  --cinnabar-deep:#8F241A;
  --gold:#C8922E;
  --gold-deep:#8A5F0E;
  --gold-bright:#F0C96A;
  --jade:#2F6F66;
  --jade-light:#9CC7BD;
  --muted:#6B5A47;

  --font-display:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono","Courier New",monospace;

  --wrap:1220px;
  --gutter:clamp(16px,4vw,40px);
  --radius:4px;
  --line:2px solid var(--ink);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-padding-top:112px;}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol,fieldset{margin:0;}
ul,ol{padding:0;list-style:none;}
img,picture,video,canvas,svg{display:block;max-width:100%;}
button,input,textarea,select{font:inherit;color:inherit;}
button{background:none;border:0;padding:0;}
a{color:inherit;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:3px solid var(--cinnabar);outline-offset:3px;border-radius:4px;}

/* ---------- 3. 中文排版与页面底纹 ---------- */
body{
  font-family:var(--font-body);
  font-size:clamp(15px,1.05vw + 12.6px,17px);
  line-height:1.75;
  letter-spacing:.012em;
  color:var(--ink);
  background-color:var(--paper);
  background-image:
    repeating-linear-gradient(0deg,rgba(20,16,12,.026) 0 1px,transparent 1px 4px),
    radial-gradient(circle at 10% -8%,rgba(200,146,46,.17),transparent 54%),
    radial-gradient(circle at 94% 2%,rgba(196,59,42,.11),transparent 46%);
  background-attachment:fixed;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.16;
  letter-spacing:.008em;
  color:var(--ink);
  text-wrap:balance;
}
h1{font-size:clamp(38px,5.2vw,72px);letter-spacing:-.01em;}
h2{font-size:clamp(26px,3.2vw,40px);}
h3{font-size:clamp(20px,2.2vw,28px);}
p{text-wrap:pretty;}
::selection{background:var(--cinnabar);color:var(--paper-soft);}

/* ---------- 4. 跳转链 ---------- */
.skip-link{
  position:fixed;top:12px;left:50%;
  transform:translate(-50%,-180%);
  z-index:9999;
  display:inline-block;
  padding:10px 22px;
  border:2px solid var(--gold);
  border-radius:999px;
  background:var(--ink);
  color:var(--gold-bright);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.12em;
  text-decoration:none;
  box-shadow:0 8px 22px rgba(20,16,12,.4);
  transition:transform .2s ease;
}
.skip-link:focus-visible{transform:translate(-50%,0);}

/* ---------- 5. 头部 · 悬浮胶囊浮岛 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  padding:14px clamp(12px,3vw,32px) 12px;
  background:linear-gradient(180deg,
    rgba(243,231,208,.98) 0%,
    rgba(243,231,208,.9) 62%,
    rgba(243,231,208,0) 100%);
}
.header-bar{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
}

/* 品牌岛 */
.brand{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:7px 18px 7px 7px;
  border-radius:999px;
  background:linear-gradient(120deg,var(--ink-soft),var(--ink) 62%);
  color:var(--paper);
  text-decoration:none;
  box-shadow:4px 4px 0 var(--gold);
  transition:transform .18s ease,box-shadow .18s ease;
}
.brand:hover{transform:translate(-1px,-1px);box-shadow:6px 6px 0 var(--gold);}
.brand-seal{
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  flex:0 0 auto;
  border-radius:9px;
  border:1px solid rgba(240,201,106,.7);
  background:linear-gradient(150deg,var(--cinnabar),var(--cinnabar-deep));
  color:var(--gold-bright);
  font-family:var(--font-display);
  font-weight:900;
  font-size:20px;
  line-height:1;
  box-shadow:inset 0 0 0 2px rgba(20,16,12,.28);
}
.brand-copy{display:flex;flex-direction:column;justify-content:center;}
.brand-name{
  display:block;
  font-family:var(--font-display);
  font-weight:800;
  font-size:16.5px;
  line-height:1.25;
  letter-spacing:.06em;
  color:var(--paper-soft);
}
.brand-tag{
  display:block;
  font-family:var(--font-mono);
  font-size:9.5px;
  line-height:1.5;
  letter-spacing:.2em;
  color:var(--gold-bright);
  opacity:.85;
}

/* 导航岛 */
.primary-nav{
  flex:0 1 auto;
  padding:5px;
  border:2px solid var(--ink);
  border-radius:999px;
  background:rgba(248,241,226,.95);
  box-shadow:4px 4px 0 rgba(20,16,12,.16);
}
.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
}
.nav-item{display:block;}
.nav-link{
  display:inline-block;
  padding:8px 14px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  line-height:1.3;
  letter-spacing:.02em;
  white-space:nowrap;
  color:var(--ink-soft);
  text-decoration:none;
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{background:var(--paper-deep);color:var(--ink);}
.nav-link[aria-current="page"]{
  background:var(--ink);
  color:var(--gold-bright);
  box-shadow:inset 0 -2px 0 var(--cinnabar);
}

/* 工具岛 */
.header-tools{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:9px;
}
.station-badge{
  display:inline-block;
  padding:4px 11px;
  border:1.5px solid var(--cinnabar);
  border-radius:999px;
  background:rgba(196,59,42,.07);
  color:var(--cinnabar-deep);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  white-space:nowrap;
}
.quick-link{
  display:inline-block;
  padding:7px 15px;
  border:2px solid var(--ink);
  border-radius:999px;
  background:var(--cinnabar);
  color:var(--paper-soft);
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  white-space:nowrap;
  text-decoration:none;
  box-shadow:3px 3px 0 var(--ink);
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease;
}
.quick-link:hover{background:var(--cinnabar-deep);transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--ink);}
.quick-link:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink);}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:8px 14px 8px 11px;
  border:2px solid var(--ink);
  border-radius:999px;
  background:var(--paper-soft);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  cursor:pointer;
  box-shadow:3px 3px 0 var(--ink);
  transition:background .16s ease,transform .16s ease,box-shadow .16s ease;
}
.nav-toggle:hover{background:var(--paper-deep);}
.nav-toggle:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink);}
.nav-toggle-bars{
  display:inline-flex;
  flex-direction:column;
  gap:3px;
  width:16px;
}
.nav-toggle-bars span{
  display:block;
  height:2px;
  border-radius:2px;
  background:var(--cinnabar);
  transition:transform .2s ease,opacity .2s ease;
}
.site-header[data-open] .nav-toggle-bars span:nth-child(1){transform:translateY(5px) 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(-5px) rotate(-45deg);}

/* 阅读进度光带 */
.progress-track{
  position:absolute;
  left:50%;
  bottom:0;
  transform:translateX(-50%);
  width:min(var(--wrap),calc(100% - 2 * clamp(12px,3vw,32px)));
  height:3px;
  border-radius:999px;
  background:rgba(20,16,12,.1);
  overflow:hidden;
  pointer-events:none;
}
.progress-fill{
  display:block;
  width:100%;
  height:100%;
  border-radius:999px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cinnabar),var(--gold) 58%,var(--gold-bright));
  transition:transform .12s linear;
}

/* ---------- 6. 页脚 · 会馆档案柜 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,120px);
  color:var(--paper);
  background:
    radial-gradient(circle at 6% -6%,rgba(200,146,46,.22),transparent 46%),
    radial-gradient(circle at 94% 8%,rgba(196,59,42,.22),transparent 42%),
    linear-gradient(180deg,var(--ink-soft),var(--ink) 42%);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:6px;
  background:repeating-linear-gradient(90deg,var(--gold) 0 14px,transparent 14px 28px);
  opacity:.55;
}
.footer-shell{
  position:relative;
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:clamp(42px,5.5vw,74px) clamp(18px,4vw,40px) 26px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.05fr 1.55fr;
  gap:clamp(28px,4.5vw,64px);
  align-items:start;
}
.footer-brand{max-width:42ch;}
.footer-seal{
  display:grid;
  place-items:center;
  width:54px;
  height:54px;
  margin-bottom:18px;
  border-radius:11px;
  border:2px solid var(--gold);
  background:linear-gradient(150deg,var(--cinnabar),var(--cinnabar-deep));
  color:var(--gold-bright);
  font-family:var(--font-display);
  font-weight:900;
  font-size:27px;
  line-height:1;
  box-shadow:4px 4px 0 rgba(240,201,106,.26);
}
.footer-brand-line{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(18px,2vw,22px);
  letter-spacing:.07em;
  color:var(--paper-soft);
}
.footer-summary{
  margin-top:10px;
  font-size:14px;
  line-height:1.85;
  color:rgba(243,231,208,.72);
}
.footer-nav{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(20px,3vw,44px);
}
.footer-group-title{
  padding-bottom:10px;
  margin-bottom:12px;
  border-bottom:1px solid rgba(240,201,106,.34);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.24em;
  color:var(--gold-bright);
}
.footer-group-links{display:flex;flex-direction:column;gap:1px;}
.footer-link{
  display:inline-block;
  padding:5px 0;
  font-size:14px;
  line-height:1.6;
  color:rgba(243,231,208,.82);
  text-decoration:none;
  transition:color .16s ease,transform .16s ease;
}
.footer-link:hover{color:var(--gold-bright);transform:translateX(4px);}
.footer-contact{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:10px 30px;
  margin-top:clamp(28px,4vw,46px);
  padding:18px 22px;
  border:1px solid rgba(240,201,106,.28);
  border-radius:14px;
  background:rgba(243,231,208,.05);
}
.footer-contact-item{
  font-size:13.5px;
  line-height:1.7;
  color:rgba(243,231,208,.8);
  word-break:break-word;
}
.footer-contact-label{
  display:inline-block;
  margin-right:9px;
  padding:2px 8px;
  border:1px solid rgba(240,201,106,.42);
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.16em;
  color:var(--gold-bright);
}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  margin-top:clamp(26px,3.5vw,40px);
  padding-top:18px;
  border-top:1px solid rgba(243,231,208,.16);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:rgba(243,231,208,.6);
}
.footer-icp{color:rgba(243,231,208,.55);}
.legal-list{display:flex;flex-wrap:wrap;gap:6px 18px;}
.legal-list a{
  padding-bottom:2px;
  border-bottom:1px solid rgba(240,201,106,.42);
  color:rgba(243,231,208,.8);
  text-decoration:none;
  transition:color .16s ease,border-color .16s ease;
}
.legal-list a:hover{color:var(--gold-bright);border-bottom-color:var(--gold-bright);}

/* ---------- 7. 通用容器与正文 ---------- */
.container{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.prose{max-width:68ch;}
.prose p + p{margin-top:1em;}
.prose h2{margin:1.6em 0 .6em;font-size:clamp(24px,2.9vw,34px);}
.prose h3{margin:1.4em 0 .5em;font-size:clamp(19px,2.1vw,24px);}
.prose ul,.prose ol{margin:1em 0;padding-left:1.35em;list-style:revert;}
.prose li + li{margin-top:.35em;}
.prose strong{font-weight:800;}
.prose a{
  color:var(--cinnabar-deep);
  text-decoration:underline;
  text-decoration-thickness:2px;
  text-underline-offset:3px;
}
.prose a:hover{color:var(--cinnabar);}
.prose blockquote{
  margin:1.4em 0;
  padding-left:1em;
  border-left:4px solid var(--gold);
  font-family:var(--font-display);
  font-size:1.08em;
  color:var(--ink-soft);
}
.prose code{
  padding:.12em .4em;
  border-radius:3px;
  background:var(--paper-deep);
  font-family:var(--font-mono);
  font-size:.92em;
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.4em;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.07em;
  line-height:1.6;
  color:var(--muted);
}
.breadcrumbs li{display:flex;align-items:center;gap:.4em;}
.breadcrumbs li + li::before{content:"／";color:var(--gold);}
.breadcrumbs a{
  color:var(--cinnabar-deep);
  text-decoration:none;
  border-bottom:1px solid rgba(143,36,26,.34);
  padding-bottom:1px;
}
.breadcrumbs a:hover{border-bottom-color:var(--cinnabar-deep);}
.breadcrumbs [aria-current="page"]{color:var(--ink);font-weight:600;}

/* ---------- 9. 按钮 ---------- */
.btn{
  --btn-bg:var(--ink);
  --btn-fg:var(--paper-soft);
  --btn-edge:var(--ink);
  --btn-shadow:var(--gold);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.55em;
  padding:12px 24px;
  border:2px solid var(--btn-edge);
  border-radius:999px;
  background:var(--btn-bg);
  color:var(--btn-fg);
  font-family:var(--font-body);
  font-size:15px;
  font-weight:700;
  letter-spacing:.04em;
  line-height:1.35;
  text-decoration:none;
  cursor:pointer;
  box-shadow:4px 4px 0 var(--btn-shadow);
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease;
}
.btn:hover{transform:translate(-1px,-1px);box-shadow:6px 6px 0 var(--btn-shadow);}
.btn:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--btn-shadow);}
.btn--cinnabar{--btn-bg:var(--cinnabar);--btn-fg:#FFF7E8;--btn-edge:var(--ink);--btn-shadow:var(--ink);}
.btn--cinnabar:hover{--btn-bg:var(--cinnabar-deep);}
.btn--outline{--btn-bg:transparent;--btn-fg:var(--ink);--btn-edge:var(--ink);--btn-shadow:var(--paper-deep);}
.btn--outline:hover{--btn-bg:var(--paper-deep);--btn-shadow:var(--ink);}

/* ---------- 10. 标签与引导语 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:.4em;
  padding:4px 10px;
  border:1.5px solid currentColor;
  border-radius:999px;
  background:rgba(196,59,42,.08);
  color:var(--cinnabar-deep);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.13em;
  line-height:1.5;
  white-space:nowrap;
}
.tag--jade{color:var(--jade);background:rgba(47,111,102,.11);}
.tag--gold{color:var(--gold-deep);background:rgba(200,146,46,.16);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.6em;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  color:var(--cinnabar-deep);
}
.eyebrow::before{
  content:"";
  width:28px;
  height:2px;
  background:linear-gradient(90deg,var(--cinnabar),var(--gold));
}

/* ---------- 11. 分区头与分隔线 ---------- */
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:1rem 1.6rem;
  padding-bottom:.8rem;
  margin-bottom:1.6rem;
  border-bottom:2px solid var(--ink);
}
.section-head h2{margin:0;}
.rule{height:0;border:0;border-top:2px solid var(--ink);margin:clamp(28px,4vw,48px) 0;}

/* ---------- 12. 栅格 ---------- */
.grid{display:grid;gap:clamp(16px,2.2vw,28px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--auto{grid-template-columns:repeat(auto-fill,minmax(258px,1fr));}

/* ---------- 13. 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  border:2px solid var(--ink);
  border-radius:var(--radius);
  background:
    linear-gradient(135deg,rgba(200,146,46,.22),rgba(196,59,42,.12)),
    var(--paper-deep);
  box-shadow:6px 6px 0 rgba(20,16,12,.88);
}
.media-frame > img,
.media-frame > picture,
.media-frame > picture > img,
.media-frame > figure > img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:16 / 9;}
.media-frame--hero{aspect-ratio:4 / 3;}
.media-frame--square{aspect-ratio:1 / 1;}
.media-frame--tall{aspect-ratio:3 / 4;}
.media-frame--strip{aspect-ratio:21 / 9;}
.media-frame__caption{
  margin-top:.6rem;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.09em;
  line-height:1.7;
  color:var(--muted);
}

/* ---------- 14. 辅助类 ---------- */
.visually-hidden{
  position:absolute!important;
  width:1px;height:1px;
  margin:-1px;padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

/* ---------- 15. 交互态 ---------- */
[data-spy-target].is-active{
  color:var(--cinnabar-deep)!important;
  box-shadow:inset 3px 0 0 var(--cinnabar);
}
.is-revealed{animation:reveal-up .55s cubic-bezier(.2,.7,.3,1) both;}
@keyframes reveal-up{
  from{opacity:0;transform:translateY(16px);}
  to{opacity:1;transform:translateY(0);}
}

/* ---------- 16. 响应式 ---------- */
@media (max-width:1100px) and (min-width:901px){
  .nav-link{padding:8px 10px;font-size:13px;}
  .brand-tag{display:none;}
  .station-badge{display:none;}
}

@media (max-width:900px){
  html{scroll-padding-top:132px;}
  .header-bar{flex-wrap:wrap;row-gap:8px;}
  .brand{order:1;}
  .header-tools{order:2;margin-left:auto;}
  .primary-nav{
    order:3;
    flex:1 0 100%;
    display:none;
    padding:8px;
    border-radius:20px;
    box-shadow:0 12px 26px rgba(20,16,12,.18);
  }
  .site-header[data-open] .primary-nav{display:block;}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-link{display:block;padding:11px 14px;border-radius:14px;font-size:15px;}
  .nav-toggle{display:inline-flex;}
  .footer-top{grid-template-columns:1fr;}
  .grid--2,.grid--3{grid-template-columns:1fr;}
}

@media (max-width:720px){
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-contact{padding:16px 18px;gap:8px 20px;}
}

@media (max-width:560px){
  .station-badge{display:none;}
  .quick-link{display:none;}
  .brand-tag{display:none;}
  .brand{padding:6px 14px 6px 6px;}
  .brand-seal{width:32px;height:32px;font-size:18px;}
  .nav-toggle-text{display:none;}
  .nav-toggle{padding:9px 12px;}
  .footer-nav{grid-template-columns:1fr;gap:22px;}
  .footer-base{flex-direction:column;align-items:flex-start;}
  .grid--auto{grid-template-columns:1fr;}
}

/* ---------- 17. 动效偏好 ---------- */
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  html{scroll-behavior:auto;}
  .progress-fill{transition:none;}
  .brand:hover,.quick-link:hover,.btn:hover,.footer-link:hover{transform:none;}
  .is-revealed{animation:none;}
}