/* ==========================================================================
   今年会中心 · rightdoor-jnh.com.cn
   共享样式 /assets/site.css
   冰蓝冷域 + 奶油纸横带 + 暖金与信号红点色
   ========================================================================== */

/* ---------- 变量 ---------- */
:root{
  --frost:#F2F7FA;
  --cream:#F6F1E6;
  --ice-blue:#1E5C82;
  --ink-ice:#0A2436;
  --crystal:#BCD7E6;
  --mist:#6E8798;
  --brown-black:#2B2320;
  --gold:#C9902F;
  --signal:#C63B2C;

  --maxw:1280px;
  --gutter:24px;

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

  --line:1px solid var(--crystal);
  --radius:2px;
}

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

/* ---------- 基础排版 ---------- */
body{
  background:var(--frost);
  color:var(--brown-black);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  display:flex;
  flex-direction:column;
  min-height:100vh;
}
h1,h2,h3,h4{font-weight:700;line-height:1.25;}
p{max-width:74ch;}
.mono,.footer-legal .mono,.brand__mark{
  font-family:var(--font-mono);
  letter-spacing:.04em;
}
.txt-mist{color:var(--mist);}
.rule-ink{display:block;height:1px;background:var(--crystal);border:0;}

/* ---------- 焦点与可访问性 ---------- */
:focus-visible{
  outline:2px solid var(--signal);
  outline-offset:3px;
}
.skip-link{
  position:fixed;
  top:8px;
  left:8px;
  z-index:200;
  transform:translateY(-160%);
  padding:10px 18px;
  background:var(--ink-ice);
  color:var(--frost);
  font-size:14px;
  border-radius:var(--radius);
  transition:transform .18s ease;
}
.skip-link:focus{transform:translateY(0);}
.visually-hidden{
  position:absolute !important;
  width:1px;height:1px;
  margin:-1px;padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

/* ---------- 容器与网格 ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.container--narrow{max-width:820px;}
.section{padding-block:clamp(48px,6vw,88px);}
.band{
  background:var(--cream);
  border-top:var(--line);
  border-bottom:var(--line);
  padding-block:clamp(40px,5vw,72px);
}
.grid{display:grid;gap:var(--gutter);}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr));}
.col-3{grid-column:span 3;}
.col-4{grid-column:span 4;}
.col-5{grid-column:span 5;}
.col-6{grid-column:span 6;}
.col-7{grid-column:span 7;}
.col-8{grid-column:span 8;}
.col-9{grid-column:span 9;}
.col-12{grid-column:span 12;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1.2;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--primary{background:var(--ice-blue);color:var(--frost);}
.btn--primary:hover{background:var(--ink-ice);}
.btn--outline{border-color:var(--ice-blue);color:var(--ice-blue);}
.btn--outline:hover{background:var(--ice-blue);color:var(--frost);}
.btn--quiet{border-color:var(--crystal);color:var(--brown-black);}
.btn--quiet:hover{border-color:var(--ice-blue);color:var(--ice-blue);}
.btn--sm{padding:8px 14px;font-size:13px;}

/* ---------- 编辑部标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--ice-blue);
}
.tag::before{content:"";width:18px;height:1px;background:currentColor;flex:0 0 auto;}
.tag--gold{color:var(--gold);}
.tag--signal{color:var(--signal);}
.tag--mist{color:var(--mist);}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-size:13px;color:var(--mist);}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb__link{color:var(--mist);}
.breadcrumb__link:hover{color:var(--ice-blue);}
.breadcrumb__sep{color:var(--crystal);}
.breadcrumb__current{color:var(--ink-ice);}

/* ---------- 内页题头带 ---------- */
.page-header{
  border-bottom:var(--line);
  padding-block:clamp(40px,5vw,76px) clamp(28px,3vw,44px);
}
.page-header__title{
  font-family:var(--font-serif);
  font-weight:600;
  font-size:clamp(26px,3.4vw,44px);
  line-height:1.16;
  letter-spacing:-.01em;
  color:var(--ink-ice);
  max-width:24ch;
}
.page-header__lead{margin-top:16px;max-width:62ch;color:var(--brown-black);}

/* ---------- 图片容器 ---------- */
.frame{
  display:flex;
  flex-direction:column;
  background:var(--cream);
  border:var(--line);
  border-radius:var(--radius);
  overflow:hidden;
}
.frame__media{position:relative;display:block;overflow:hidden;background:linear-gradient(135deg,#E7F0F6 0%,#F6F1E6 100%);}
.frame__media img{width:100%;height:100%;object-fit:cover;}
.frame--wide .frame__media{aspect-ratio:16 / 9;}
.frame--photo .frame__media{aspect-ratio:4 / 3;}
.frame--square .frame__media{aspect-ratio:1 / 1;}
.frame__caption{
  padding:10px 14px;
  font-size:12px;
  line-height:1.6;
  color:var(--mist);
  border-top:var(--line);
}

/* ---------- 筛选条 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;}
.filter-btn{
  padding:8px 16px;
  background:var(--frost);
  border:1px solid var(--crystal);
  border-radius:var(--radius);
  font-size:13px;
  color:var(--brown-black);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.filter-btn:hover{border-color:var(--ice-blue);color:var(--ice-blue);}
.filter-btn[aria-pressed="true"]{background:var(--ice-blue);border-color:var(--ice-blue);color:var(--frost);}
.filter-empty{
  padding:28px 24px;
  border:1px dashed var(--crystal);
  border-radius:var(--radius);
  background:var(--cream);
  font-size:14px;
  color:var(--mist);
}
.filter-empty__reset{
  margin-left:10px;
  color:var(--ice-blue);
  font-weight:600;
  border-bottom:1px solid currentColor;
}

/* ---------- 显现与锚点状态 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .5s ease,transform .5s ease;
}
[data-reveal].is-visible{opacity:1;transform:none;}
[data-spy-link][aria-current="true"]{
  color:var(--ice-blue);
  border-color:var(--ice-blue);
  font-weight:600;
}

/* ==========================================================================
   页头
   ========================================================================== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--frost);
  border-bottom:var(--line);
}
.site-header__inner{
  position:relative;
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:14px var(--gutter);
  display:flex;
  align-items:center;
  gap:24px;
}
.scroll-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  width:100%;
  height:2px;
  background:transparent;
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--ice-blue) 0%,var(--gold) 100%);
}

/* 品牌 */
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand__mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  background:var(--ink-ice);
  color:var(--frost);
  font-size:14px;
  border-radius:var(--radius);
}
.brand__text{display:flex;flex-direction:column;gap:2px;}
.brand__name{font-weight:800;font-size:18px;line-height:1.2;color:var(--ink-ice);letter-spacing:.01em;}
.brand__tagline{font-size:12px;line-height:1.3;color:var(--mist);}

/* 导航区 */
.nav-cluster{margin-left:auto;display:flex;align-items:center;gap:20px;}
.site-nav__list{display:flex;align-items:center;gap:2px;}
.site-nav__link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:14px;
  color:var(--brown-black);
  transition:color .18s ease;
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:4px;
  height:2px;
  background:var(--ice-blue);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.site-nav__link:hover{color:var(--ice-blue);}
.site-nav__link:hover::after{transform:scaleX(1);}
.site-nav__link[aria-current="page"]{color:var(--ice-blue);font-weight:600;}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);}

.header-aside{
  display:flex;
  align-items:center;
  gap:14px;
  padding-left:20px;
  border-left:var(--line);
}
.header-aside__link{font-size:13px;color:var(--mist);transition:color .18s ease;}
.header-aside__link:hover{color:var(--ice-blue);}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  margin-left:auto;
  align-items:center;
  gap:10px;
  padding:9px 14px;
  border:var(--line);
  border-radius:var(--radius);
  font-size:13px;
  color:var(--ink-ice);
  background:var(--frost);
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;}
.nav-toggle__bars i{display:block;width:18px;height:1.5px;background:currentColor;}
.nav-toggle[aria-expanded="true"]{border-color:var(--ice-blue);color:var(--ice-blue);}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer{
  margin-top:auto;
  background:var(--ink-ice);
  color:var(--frost);
}
.site-footer__inner{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(48px,6vw,80px) var(--gutter) 28px;
}
.site-footer__top{
  display:grid;
  grid-template-columns:1fr 2.6fr;
  gap:clamp(32px,4vw,64px);
  padding-bottom:clamp(32px,4vw,48px);
  border-bottom:1px solid rgba(188,215,230,.22);
}
.footer-brand__link{display:flex;align-items:center;gap:12px;}
.footer-brand__mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border:1px solid var(--gold);
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  border-radius:var(--radius);
}
.footer-brand__name{font-weight:800;font-size:18px;color:var(--frost);}
.footer-brand__tagline{margin-top:16px;font-size:14px;line-height:1.7;color:rgba(242,247,250,.72);}
.footer-brand__region{margin-top:10px;font-size:12px;color:var(--gold);}

.footer-nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(24px,3vw,40px);
}
.footer-col__title{
  padding-bottom:10px;
  margin-bottom:16px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--frost);
  border-bottom:1px solid rgba(188,215,230,.22);
}
.footer-col__list{display:flex;flex-direction:column;gap:10px;}
.footer-col__link{font-size:14px;color:rgba(242,247,250,.78);transition:color .18s ease;}
.footer-col__link:hover{color:var(--gold);}
.footer-col__text{font-size:14px;line-height:1.7;color:rgba(242,247,250,.78);}
.footer-col__list--plain li{font-size:14px;line-height:1.7;color:rgba(242,247,250,.78);word-break:break-word;}

.site-footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:12px 32px;
  padding-top:24px;
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:8px;
  font-size:13px;
  color:rgba(242,247,250,.66);
}
.footer-legal__sep{color:rgba(188,215,230,.5);}
.footer-note{max-width:52ch;font-size:13px;line-height:1.7;color:rgba(242,247,250,.55);}

/* ---------- 公告浮标 ---------- */
.notice-dock{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:70;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:10px;
}
.notice-dock__toggle{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:11px 16px;
  background:var(--ink-ice);
  color:var(--frost);
  border:1px solid rgba(188,215,230,.28);
  border-radius:var(--radius);
  font-size:13px;
  box-shadow:0 14px 30px -18px rgba(10,36,54,.7);
}
.notice-dock__dot{width:7px;height:7px;border-radius:50%;background:var(--signal);flex:0 0 auto;}
.notice-dock__count{font-size:12px;color:var(--gold);}
.notice-dock__panel{
  width:min(300px,calc(100vw - 48px));
  padding:18px;
  background:var(--frost);
  border:var(--line);
  border-top:2px solid var(--signal);
  border-radius:var(--radius);
  color:var(--brown-black);
  box-shadow:0 24px 50px -26px rgba(10,36,54,.55);
  transition:opacity .16s ease;
}
.notice-dock[data-open] .notice-dock__panel{opacity:1;}
.notice-dock__panel-title{
  margin-bottom:12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--mist);
}
.notice-dock__list{display:flex;flex-direction:column;gap:10px;margin-bottom:14px;}
.notice-dock__link{
  display:block;
  padding-left:10px;
  font-size:14px;
  line-height:1.55;
  color:var(--ink-ice);
  border-left:2px solid var(--crystal);
  transition:border-color .18s ease,color .18s ease;
}
.notice-dock__link:hover{border-color:var(--signal);color:var(--ice-blue);}
.notice-dock__more{font-size:13px;font-weight:600;color:var(--ice-blue);}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1180px){
  .header-aside__link{display:none;}
}

@media (max-width:1024px){
  .grid--12{grid-template-columns:repeat(8,minmax(0,1fr));}
  .col-3,.col-4{grid-column:span 4;}
  .col-5,.col-6{grid-column:span 8;}
  .col-7,.col-8,.col-9{grid-column:span 8;}
  .site-footer__top{grid-template-columns:1fr;}
  .footer-nav{grid-template-columns:repeat(3,minmax(0,1fr));}
}

@media (max-width:980px){
  .nav-toggle{display:inline-flex;}
  .nav-cluster{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:16px;
    padding:10px var(--gutter) 22px;
    background:var(--frost);
    border-bottom:var(--line);
    box-shadow:0 22px 44px -30px rgba(10,36,54,.6);
  }
  .nav-cluster[data-open]{display:flex;}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0;}
  .site-nav__item{border-bottom:var(--line);}
  .site-nav__link{display:block;padding:14px 0;font-size:16px;}
  .site-nav__link::after{display:none;}
  .site-nav__link[aria-current="page"]{padding-left:12px;border-left:2px solid var(--ice-blue);}
  .header-aside{
    flex-direction:column;
    align-items:flex-start;
    gap:12px;
    padding-left:0;
    border-left:0;
    padding-top:16px;
  }
  .header-aside__link{display:inline-block;font-size:14px;}
  .header-aside .btn{width:100%;}
}

@media (max-width:900px){
  .grid--12{grid-template-columns:repeat(4,minmax(0,1fr));}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9,.col-12{grid-column:span 4;}
  .footer-nav{grid-template-columns:1fr;gap:28px;}
  .footer-col__title{margin-bottom:12px;}
}

@media (max-width:600px){
  :root{--gutter:18px;}
  .brand__mark{width:38px;height:38px;font-size:13px;}
  .brand__name{font-size:16px;}
  .brand__tagline{display:none;}
  .notice-dock{right:12px;bottom:12px;}
  .notice-dock__panel{width:calc(100vw - 24px);}
  .site-footer__bottom{flex-direction:column;align-items:flex-start;}
}

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