/* ============================================================
   九博国际会馆 · 共享样式 /assets/site.css
   夜间精装手册：深海墨蓝纸底 + 琥珀书签 + 玻璃目录层
   ============================================================ */

:root{
  --ink-deep:#0B1B2B;
  --ink-night:#102A43;
  --glass:#1C3A55;
  --amber:#E0A83C;
  --amber-soft:#F2C97A;
  --coral:#E86A4A;
  --celadon:#5FA89B;
  --paper:#F4EBDD;
  --mist:#8FA3B8;
  --void:#06121E;

  --paper-88:rgba(244,235,221,.88);
  --paper-70:rgba(244,235,221,.70);
  --mist-70:rgba(143,163,184,.70);
  --mist-45:rgba(143,163,184,.45);
  --mist-25:rgba(143,163,184,.25);
  --mist-14:rgba(143,163,184,.14);

  --rail-w:96px;
  --page-max:1240px;
  --gutter:clamp(18px,4vw,44px);

  --font-display:"Noto Serif SC","Songti SC","STSong",serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;

  --ease:cubic-bezier(.22,.61,.36,1);
  --radius:4px;
}

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

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

body{
  margin:0;
  min-height:100vh;
  padding-left:var(--rail-w);
  background:var(--ink-deep);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,svg,video{display:block;max-width:100%;height:auto;}
button{font:inherit;color:inherit;}
a{color:inherit;}

::selection{background:var(--amber);color:var(--void);}

/* ---------- 焦点 ---------- */
:where(a,button,[tabindex],input,select,textarea):focus-visible{
  outline:2px solid var(--amber-soft);
  outline-offset:3px;
  border-radius:2px;
}

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

.skip-link{
  position:absolute;
  top:-140px;
  left:clamp(16px,4vw,44px);
  z-index:200;
  padding:12px 22px;
  background:var(--amber);
  color:var(--void);
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  text-decoration:none;
  border-radius:0 0 var(--radius) var(--radius);
  transition:top .2s var(--ease);
}
.skip-link:focus{top:0;}

.container{
  width:100%;
  max-width:var(--page-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.rule{
  height:1px;
  border:0;
  margin:clamp(28px,4vw,48px) 0;
  background:linear-gradient(90deg,var(--mist-25),rgba(143,163,184,0));
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-body);
  font-size:11px;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--amber);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:1px;
  background:var(--amber);
  flex:none;
}

.tag{
  display:inline-block;
  padding:3px 10px;
  border:1px solid var(--mist-25);
  border-radius:2px;
  font-size:11px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--mist);
  text-transform:uppercase;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),
             border-color .2s var(--ease),transform .2s var(--ease);
}
.btn--gold{
  background:var(--amber);
  border-color:var(--amber);
  color:var(--void);
}
.btn--gold:hover{background:var(--amber-soft);border-color:var(--amber-soft);}
.btn--ghost{
  background:transparent;
  border-color:rgba(224,168,60,.5);
  color:var(--amber-soft);
}
.btn--ghost:hover{
  background:rgba(224,168,60,.12);
  border-color:var(--amber);
  color:var(--amber-soft);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-size:12.5px;letter-spacing:.06em;color:var(--mist-70);}
.breadcrumb__list{display:flex;flex-wrap:wrap;gap:8px;}
.breadcrumb__list li{display:flex;align-items:center;gap:8px;}
.breadcrumb__list li + li::before{content:"/";color:var(--mist-45);}
.breadcrumb a{
  color:var(--mist-70);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.breadcrumb a:hover{color:var(--amber-soft);border-bottom-color:var(--amber);}

/* ---------- 正文容器 ---------- */
.prose{
  max-width:68ch;
  font-size:17px;
  line-height:1.85;
  color:var(--paper-88);
}
.prose > * + *{margin-top:1.15em;}
.prose h2{
  margin-top:2.2em;
  font-family:var(--font-display);
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;
  line-height:1.35;
  letter-spacing:-.01em;
  color:var(--paper);
}
.prose h3{
  margin-top:1.8em;
  font-family:var(--font-body);
  font-size:17px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--amber-soft);
}
.prose ul,.prose ol{padding-left:1.2em;}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin-bottom:.5em;}
.prose li::marker{color:var(--amber);}
.prose a{
  color:var(--amber-soft);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
}
.prose a:hover{color:var(--amber);}
.prose strong{color:var(--paper);font-weight:600;}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(18px,3vw,32px);}
.grid--split{
  grid-template-columns:minmax(0,7fr) minmax(0,4fr);
  gap:clamp(20px,4vw,56px);
  align-items:start;
}
@media (max-width:900px){
  .grid--split{grid-template-columns:minmax(0,1fr);}
}

/* ---------- 展签卡 ---------- */
.plate{
  position:relative;
  display:block;
  padding:22px 24px 24px;
  border:1px solid var(--mist-25);
  border-radius:var(--radius);
  background:rgba(28,58,85,.42);
  color:var(--paper);
  text-decoration:none;
  transition:border-color .22s var(--ease),background-color .22s var(--ease);
}
.plate:hover{
  border-color:rgba(224,168,60,.55);
  background:rgba(28,58,85,.62);
}
.plate__no{
  display:block;
  margin-bottom:10px;
  font-family:var(--font-display);
  font-size:13px;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--amber);
}
.plate__status{
  position:absolute;
  top:22px;
  right:22px;
  font-size:11px;
  letter-spacing:.14em;
  color:var(--mist);
}
.plate--paper{
  background:var(--paper);
  border-color:var(--paper);
  color:var(--ink-deep);
}
.plate--paper .plate__no{color:#8A5E11;}
.plate--paper .plate__status{color:rgba(11,27,43,.6);}
.plate--paper:hover{
  background:#FFF7E9;
  border-color:var(--amber);
}

/* ---------- 状态圆点 ---------- */
.dot{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:11px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--mist);
}
.dot::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--mist);
  flex:none;
}
.dot--ok::before{background:var(--celadon);}
.dot--warn::before{background:var(--coral);}
.dot--gold::before{background:var(--amber);}
.dot--ok{color:var(--celadon);}
.dot--warn{color:var(--coral);}
.dot--gold{color:var(--amber-soft);}

/* ---------- 大字数据 ---------- */
.figure-lg{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(56px,12vw,132px);
  line-height:.9;
  letter-spacing:-.04em;
  color:var(--paper);
}
.figure-cap{
  margin-top:14px;
  font-size:12.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
}

/* ---------- 图片容器基础（页面阶段放图） ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  width:100%;
  aspect-ratio:16 / 10;
  border:1px solid var(--mist-25);
  border-radius:var(--radius);
  background:
    radial-gradient(120% 90% at 20% 0%,rgba(28,58,85,.95),rgba(6,18,30,.98) 70%),
    var(--ink-night);
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.92) contrast(1.02);
}
.media-frame--tall{aspect-ratio:3 / 4;}
.media-frame--square{aspect-ratio:1 / 1;}
.media-frame__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:12px 16px;
  background:linear-gradient(0deg,rgba(6,18,30,.92),rgba(6,18,30,0));
  font-size:12px;
  letter-spacing:.08em;
  color:var(--paper-70);
}

/* ---------- 显现 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
[data-reveal].is-visible{
  opacity:1;
  transform:none;
}
html:not(.js) [data-reveal]{
  opacity:1;
  transform:none;
}

/* ============================================================
   页头
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:rgba(11,27,43,.86);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--mist-25);
}

/* 左侧书脊轨道 */
.brand-rail{
  position:fixed;
  top:0;
  bottom:0;
  left:0;
  z-index:80;
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:space-between;
  padding:28px 0 32px;
  background:linear-gradient(180deg,#06121E 0%,#0B1B2B 44%,#0B1B2B 100%);
  border-right:1px solid var(--mist-14);
}
.brand-rail__line{
  width:1px;
  height:56px;
  background:linear-gradient(180deg,var(--amber),rgba(224,168,60,0));
}
.brand-rail__mark{
  writing-mode:vertical-rl;
  font-family:var(--font-display);
  font-size:13px;
  font-weight:700;
  letter-spacing:.34em;
  color:var(--mist-70);
}
.brand-rail__dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--amber);
  box-shadow:0 0 0 4px rgba(224,168,60,.14);
}

/* 命令栏 */
.site-header__bar{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,26px);
  width:100%;
  max-width:var(--page-max);
  min-height:76px;
  margin-inline:auto;
  padding:12px var(--gutter);
}

.brand{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:1px;
  padding-left:14px;
  text-decoration:none;
  color:var(--paper);
  flex:none;
}
.brand::before{
  content:"";
  position:absolute;
  left:0;
  top:3px;
  bottom:3px;
  width:2px;
  border-radius:2px;
  background:var(--amber);
}
.brand__mark{
  font-family:var(--font-display);
  font-size:clamp(18px,1.5vw,22px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:.02em;
  color:var(--paper);
  transition:color .18s var(--ease);
}
.brand:hover .brand__mark{color:var(--amber-soft);}
.brand__sub{
  font-family:var(--font-body);
  font-size:10px;
  font-weight:500;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--mist);
}

.cmd-nav{margin-left:auto;}
.cmd-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
  counter-reset:navidx;
}
.cmd-nav__item{counter-increment:navidx;}
.cmd-nav__link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  padding:9px 11px;
  border:1px solid transparent;
  border-radius:3px;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:500;
  letter-spacing:.02em;
  color:var(--mist);
  text-decoration:none;
  white-space:nowrap;
  transition:color .18s var(--ease),border-color .18s var(--ease),
             background-color .18s var(--ease);
}
.cmd-nav__link::before{
  content:counter(navidx,decimal-leading-zero);
  font-size:10px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--mist);
  opacity:.8;
  transition:color .18s var(--ease),opacity .18s var(--ease);
}
.cmd-nav__link:hover{
  color:var(--paper);
  border-color:rgba(224,168,60,.4);
  background:rgba(28,58,85,.5);
}
.cmd-nav__link:hover::before{color:var(--amber);opacity:1;}
.cmd-nav__link[aria-current="page"]{
  color:var(--paper);
  border-color:rgba(224,168,60,.55);
  background:rgba(28,58,85,.72);
}
.cmd-nav__link[aria-current="page"]::before{color:var(--amber);opacity:1;}

.header-tools{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  flex:none;
}

.utility-chip{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:9px 14px;
  border:1px solid rgba(224,168,60,.45);
  border-radius:3px;
  background:linear-gradient(180deg,rgba(224,168,60,.16),rgba(224,168,60,.05));
  color:var(--amber-soft);
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  text-decoration:none;
  white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease);
}
.utility-chip::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--coral);
  box-shadow:0 0 0 3px rgba(232,106,74,.18);
  flex:none;
}
.utility-chip:hover{
  background:var(--amber);
  border-color:var(--amber);
  color:var(--void);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 12px;
  border:1px solid var(--mist-25);
  border-radius:3px;
  background:transparent;
  color:var(--paper);
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--amber);color:var(--amber-soft);}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;
  height:2px;
  background:currentColor;
  flex:none;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:2px;
  background:currentColor;
}
.nav-toggle__bars::before{top:-5px;}
.nav-toggle__bars::after{top:5px;}
.nav-toggle[aria-expanded="true"]{
  border-color:var(--amber);
  color:var(--amber-soft);
  background:rgba(224,168,60,.12);
}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--amber),var(--coral));
  pointer-events:none;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,120px);
  overflow:hidden;
  background:var(--void);
  border-top:1px solid rgba(224,168,60,.35);
  color:var(--mist);
}
.site-footer__seal{
  position:absolute;
  right:-.06em;
  bottom:-.3em;
  z-index:0;
  font-family:var(--font-display);
  font-size:clamp(150px,26vw,320px);
  font-weight:900;
  line-height:.8;
  color:rgba(244,235,221,.035);
  pointer-events:none;
  user-select:none;
}
.site-footer__inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(240px,1fr) minmax(0,1.65fr);
  gap:clamp(28px,5vw,64px);
  width:100%;
  max-width:var(--page-max);
  margin-inline:auto;
  padding:clamp(40px,6vw,72px) var(--gutter) clamp(30px,4vw,44px);
}
.site-footer__mast{max-width:34ch;}
.site-footer__brand{
  font-family:var(--font-display);
  font-size:clamp(17px,1.6vw,20px);
  font-weight:700;
  line-height:1.5;
  letter-spacing:.01em;
  color:var(--paper);
}
.site-footer__note{
  margin-top:14px;
  margin-bottom:24px;
  font-size:13.5px;
  line-height:1.8;
  color:var(--mist-70);
}
.site-footer__cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,3vw,36px);
}
.site-footer__title{
  margin-bottom:14px;
  font-family:var(--font-body);
  font-size:11px;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--amber);
}
.site-footer__list{display:flex;flex-direction:column;gap:2px;}
.site-footer__link{
  display:inline-block;
  padding:4px 0;
  border-bottom:1px solid transparent;
  font-size:14.5px;
  color:var(--mist);
  text-decoration:none;
  transition:color .18s var(--ease),border-color .18s var(--ease),
             transform .18s var(--ease);
}
.site-footer__link:hover{
  color:var(--amber-soft);
  border-bottom-color:var(--amber);
  transform:translateX(2px);
}
.site-footer__base{
  position:relative;
  z-index:1;
  border-top:1px solid var(--mist-14);
}
.site-footer__base-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 26px;
  width:100%;
  max-width:var(--page-max);
  margin-inline:auto;
  padding:18px var(--gutter) 26px;
  font-size:12.5px;
  letter-spacing:.03em;
  color:var(--mist-70);
}
.site-footer__legal{color:var(--amber-soft);letter-spacing:.06em;}
.site-footer__contact{color:var(--mist-70);}
.site-footer__copy{margin-left:auto;color:var(--mist-45);}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1080px){
  .brand-rail{display:none;}
  .nav-toggle{display:inline-flex;}

  .cmd-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    margin-left:0;
    padding:8px var(--gutter) 18px;
    background:var(--ink-night);
    border-bottom:1px solid var(--mist-25);
    box-shadow:0 24px 48px rgba(6,18,30,.55);
  }
  .cmd-nav[data-open]{display:block;}
  .cmd-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .cmd-nav__link{
    justify-content:flex-start;
    width:100%;
    padding:14px 6px;
    border:0;
    border-bottom:1px solid var(--mist-14);
    border-radius:0;
    font-size:15px;
  }
  .cmd-nav__link:hover{
    background:transparent;
    border-color:transparent;
    border-bottom-color:rgba(224,168,60,.4);
  }
  .cmd-nav__link[aria-current="page"]{
    background:transparent;
    border-color:transparent;
    border-bottom-color:rgba(224,168,60,.55);
  }

  .site-footer__inner{grid-template-columns:minmax(0,1fr);}
  .site-footer__mast{max-width:none;}
}

@media (max-width:760px){
  body{font-size:16px;}
  .site-footer__cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 20px;}
  .site-footer__copy{margin-left:0;width:100%;}
}

@media (max-width:560px){
  .site-header__bar{min-height:66px;padding-block:10px;gap:8px;}
  .brand{padding-left:11px;}
  .brand__sub{display:none;}
  .utility-chip{padding:8px 11px;font-size:12px;gap:7px;}
  .nav-toggle{padding:8px 10px;}
  .nav-toggle__text{display:none;}
  .site-footer__cols{grid-template-columns:minmax(0,1fr);}
  .site-footer__base-inner{font-size:12px;}
}

/* ============================================================
   动效偏好
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  [data-reveal]{
    opacity:1;
    transform:none;
  }
  .scroll-progress{display:none;}
}