/* =========================================================
   金年会娱乐赛 · V4 官方矩阵
   /assets/site.css — 共享外壳：reset / tokens / header / footer / 基础组件
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video,picture{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
main{display:block}
#main-content{scroll-margin-top:24px}

/* ---------- 2. Tokens ---------- */
:root{
  /* 色板 */
  --deep-sea:#041826;
  --midnight:#0A2742;
  --electric:#35E0F2;
  --gold:#E8B45C;
  --coral:#FF7A59;
  --neon:#7CFFB2;
  --ice:#EAF4FF;
  --steel:#8FA9BF;
  --paper:#F4E8D0;
  --ink:#101820;
  --line:#1E3A52;
  --line-soft:rgba(30,58,82,.65);
  --line-accent:rgba(53,224,242,.30);

  /* 轨道尺寸 */
  --rail-brand-w:96px;
  --rail-nav-w:236px;
  --matrix-bar-h:64px;

  /* 版心 */
  --shell-max:1100px;
  --gutter:clamp(20px,4vw,52px);

  /* 字体 */
  --font-display:'Space Grotesk','HarmonyOS Sans SC','Noto Sans SC',sans-serif;
  --font-body:'Noto Sans SC','HarmonyOS Sans SC',sans-serif;
  --font-data:'JetBrains Mono','IBM Plex Mono',monospace;

  /* 动效 */
  --ease:cubic-bezier(.22,.61,.36,1);
  --t-fast:160ms;
  --t-med:240ms;

  /* 层级 */
  --z-header:500;
  --z-panel:520;
  --z-bar:530;
}

/* ---------- 3. 基础排版 ---------- */
body{
  background-color:var(--deep-sea);
  color:var(--ice);
  font-family:var(--font-body);
  font-size:clamp(16px,1.02vw,18px);
  font-weight:400;
  line-height:1.75;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.08;
  letter-spacing:-.03em;
  color:var(--ice);
  text-wrap:balance;
}
h1{font-size:clamp(2.6rem,6vw,5.8rem);letter-spacing:-.035em}
h2{font-size:clamp(1.85rem,3.4vw,3rem)}
h3{font-size:clamp(1.2rem,1.9vw,1.55rem);line-height:1.25;letter-spacing:-.02em}
h4{font-size:clamp(1.02rem,1.3vw,1.15rem);line-height:1.35;letter-spacing:-.01em}
strong{font-weight:700;color:var(--ice)}

:focus-visible{outline:2px solid var(--electric);outline-offset:3px;border-radius:1px}

/* ---------- 4. 通用工具与内容组件 ---------- */
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
.shell{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.shell--narrow{max-width:820px}

.link{
  color:var(--electric);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
  transition:color var(--t-fast) var(--ease);
}
.link:hover{color:var(--gold)}

.lead{
  font-size:clamp(1.02rem,1.35vw,1.18rem);
  line-height:1.72;
  color:#C8DBEA;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--electric);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--electric);flex:none}

.data{font-family:var(--font-data);font-weight:600;letter-spacing:.02em}
.data--xl{font-size:clamp(1.5rem,2.6vw,2rem);font-weight:700}

/* 面包屑 */
.trail{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--steel);
}
.trail__link{color:var(--steel);transition:color var(--t-fast) var(--ease)}
.trail__link:hover{color:var(--electric)}
.trail__sep{color:var(--line-accent)}
.trail__current{color:var(--ice)}

/* 面板卡片 */
.panel{
  position:relative;
  background:var(--midnight);
  border:1px solid var(--line);
  border-radius:2px;
  padding:clamp(20px,2.6vw,32px);
  transition:transform var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease),
             box-shadow var(--t-fast) var(--ease);
}
.panel:hover{
  transform:translateY(-2px);
  border-color:var(--line-accent);
  box-shadow:0 0 0 1px rgba(53,224,242,.10),0 14px 30px -20px rgba(53,224,242,.55);
}

/* 状态标签与圆点 */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.12em;
  padding:4px 9px;
  border:1px solid var(--line);
  border-radius:2px;
  color:var(--steel);
  white-space:nowrap;
}
.tag--info{color:var(--electric);border-color:rgba(53,224,242,.38);background:rgba(53,224,242,.08)}
.tag--gold{color:var(--gold);border-color:rgba(232,180,92,.40);background:rgba(232,180,92,.08)}
.tag--warn{color:var(--coral);border-color:rgba(255,122,89,.40);background:rgba(255,122,89,.08)}
.tag--live{color:var(--neon);border-color:rgba(124,255,178,.35);background:rgba(124,255,178,.07)}

.dot{
  display:inline-block;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--steel);
  flex:none;
}
.dot--live{background:var(--neon);box-shadow:0 0 0 3px rgba(124,255,178,.16)}
.dot--info{background:var(--electric);box-shadow:0 0 0 3px rgba(53,224,242,.16)}
.dot--gold{background:var(--gold);box-shadow:0 0 0 3px rgba(232,180,92,.16)}
.dot--warn{background:var(--coral);box-shadow:0 0 0 3px rgba(255,122,89,.16)}

/* 图文容器：页面阶段放置真实图片 */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--midnight);
  border:1px solid var(--line);
  border-radius:2px;
  aspect-ratio:16 / 9;
}
.media-frame > img,
.media-frame > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  filter:brightness(.86) contrast(1.08) saturate(.92);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(53,224,242,.14) 1px,transparent 1px),
    linear-gradient(90deg,rgba(53,224,242,.14) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.35;
  mix-blend-mode:screen;
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:4 / 5}
.media-frame--square{aspect-ratio:1 / 1}

/* 暖纸长文阅读面板 */
.paper-sheet{
  background:var(--paper);
  color:var(--ink);
  border:1px solid rgba(16,24,32,.16);
  border-radius:2px;
  padding:clamp(24px,4vw,56px);
}
.paper-sheet h2,.paper-sheet h3,.paper-sheet h4{color:var(--ink)}
.paper-sheet .link{color:#0A5C6B}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:600;
  line-height:1.2;
  padding:11px 18px;
  border:1px solid var(--line);
  border-radius:2px;
  color:var(--ice);
  background:transparent;
  cursor:pointer;
  transition:background-color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease),
             color var(--t-fast) var(--ease),
             transform var(--t-fast) var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{
  background:var(--electric);
  border-color:var(--electric);
  color:var(--deep-sea);
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:.01em;
}
.btn--primary:hover{background:#5CE9F7;border-color:#5CE9F7}
.btn--gold{
  background:transparent;
  color:var(--gold);
  border-color:var(--gold);
  font-family:var(--font-display);
  font-weight:700;
}
.btn--gold:hover{background:rgba(232,180,92,.12)}
.btn--ghost{background:transparent;color:var(--ice);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--electric);color:var(--electric)}

/* ---------- 6. Skip link ---------- */
.skip-link{
  position:fixed;
  top:12px;left:12px;
  z-index:1000;
  transform:translateY(-180%);
  background:var(--electric);
  color:var(--deep-sea);
  font-family:var(--font-data);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  padding:10px 18px;
  border-radius:2px;
  transition:transform var(--t-fast) var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0);outline:2px solid var(--gold);outline-offset:3px}

/* ---------- 7. 头部：左右分置侧轨 ---------- */
.site-header{position:relative;z-index:var(--z-header)}

/* 左侧品牌轨道 */
.rail-brand{display:none}
.rail-brand__link{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:18px;
  width:100%;
  padding:6px 0;
  color:var(--ice);
}
.rail-brand__glyph{
  display:grid;
  place-items:center;
  width:38px;height:38px;
  background:var(--gold);
  color:var(--deep-sea);
  font-family:var(--font-display);
  font-size:16px;
  font-weight:900;
  letter-spacing:-.04em;
  border-radius:2px;
  transition:background-color var(--t-fast) var(--ease);
}
.rail-brand__link:hover .rail-brand__glyph{background:#F2C778}
.rail-brand__wordmark{
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-family:var(--font-display);
  font-size:15px;
  font-weight:700;
  letter-spacing:.28em;
  color:var(--ice);
}
.rail-brand__meta{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
}
.rail-brand__dot{
  width:7px;height:7px;
  border-radius:50%;
  background:var(--neon);
  box-shadow:0 0 0 3px rgba(124,255,178,.16);
}
.rail-brand__state{
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--steel);
}
.rail-brand__progress{
  position:absolute;
  top:0;right:-1px;
  width:2px;height:100%;
  background:var(--gold);
  transform:scaleY(0);
  transform-origin:bottom;
  transition:transform 90ms linear;
  pointer-events:none;
}

/* 右侧栏目轨道 */
.rail-nav{
  background:var(--deep-sea);
  padding:24px 20px;
}
.rail-nav__head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding-bottom:14px;
  margin-bottom:18px;
  border-bottom:1px solid var(--line);
}
.rail-nav__eyebrow{
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--steel);
}
.rail-nav__count{
  font-family:var(--font-data);
  font-size:12px;
  font-weight:700;
  color:var(--electric);
}
.rail-nav__list{display:flex;flex-direction:column;gap:2px}
.rail-nav__item{display:block}
.rail-nav__link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:12px;
  margin-left:-2px;
  padding:11px 12px 11px 14px;
  border-left:2px solid transparent;
  color:var(--steel);
  font-size:15px;
  transition:color var(--t-fast) var(--ease),
             background-color var(--t-fast) var(--ease),
             border-color var(--t-fast) var(--ease);
}
.rail-nav__link:hover{
  color:var(--ice);
  background:rgba(53,224,242,.07);
  border-left-color:rgba(53,224,242,.50);
}
.rail-nav__link[aria-current="page"]{
  color:var(--ice);
  border-left-color:var(--electric);
  background:linear-gradient(90deg,rgba(53,224,242,.16),rgba(53,224,242,0));
}
.rail-nav__link[aria-current="page"] .rail-nav__index{color:var(--gold)}
.rail-nav__index{
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--steel);
  transition:color var(--t-fast) var(--ease);
}
.rail-nav__label{font-weight:500;letter-spacing:.01em}
.rail-nav__foot{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-top:auto;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.rail-nav__cta{width:100%}
.rail-nav__note{
  font-family:var(--font-data);
  font-size:11px;
  line-height:1.6;
  letter-spacing:.06em;
  color:var(--steel);
}

/* 移动端底部矩阵入口条 */
.matrix-bar{display:none}
.matrix-bar__brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-display);
  font-size:14px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ice);
}
.matrix-bar__brand::before{
  content:"";
  width:10px;height:10px;
  background:var(--gold);
  border-radius:1px;
  flex:none;
}
.matrix-bar__toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  height:38px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:2px;
  background:rgba(53,224,242,.06);
  color:var(--electric);
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.14em;
  transition:border-color var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease);
}
.matrix-bar__toggle:hover{border-color:var(--line-accent);background:rgba(53,224,242,.12)}
.matrix-bar__toggle-icon{position:relative;display:block;width:16px;height:10px;flex:none}
.matrix-bar__toggle-icon::before,
.matrix-bar__toggle-icon::after{
  content:"";
  position:absolute;
  left:0;right:0;
  height:1.5px;
  background:currentColor;
  transition:transform var(--t-med) var(--ease),top var(--t-med) var(--ease);
}
.matrix-bar__toggle-icon::before{top:0}
.matrix-bar__toggle-icon::after{top:8px}
.matrix-bar__toggle[aria-expanded="true"] .matrix-bar__toggle-icon::before{top:4px;transform:rotate(45deg)}
.matrix-bar__toggle[aria-expanded="true"] .matrix-bar__toggle-icon::after{top:4px;transform:rotate(-45deg)}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,104px);
  background:var(--deep-sea);
  border-top:1px solid var(--line);
  padding:clamp(44px,6vw,80px) 0 0;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:72px 72px;
  opacity:.16;
}
.footer-inner{
  position:relative;
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:clamp(28px,4vw,44px);
}
.footer-brand{min-width:0}
.footer-brand__glyph{
  display:inline-grid;
  place-items:center;
  width:44px;height:44px;
  margin-bottom:16px;
  background:var(--gold);
  color:var(--deep-sea);
  font-family:var(--font-display);
  font-size:17px;
  font-weight:900;
  letter-spacing:-.04em;
  border-radius:2px;
}
.footer-brand__line{
  font-family:var(--font-display);
  font-size:clamp(1rem,1.4vw,1.15rem);
  font-weight:700;
  line-height:1.45;
  letter-spacing:-.01em;
  color:var(--ice);
  margin-bottom:12px;
}
.footer-brand__note{
  font-size:13.5px;
  line-height:1.72;
  color:var(--steel);
  max-width:36ch;
}
.footer-nav{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(120px,1fr));
  gap:24px;
}
.footer-col{min-width:0}
.footer-col__title{
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.20em;
  text-transform:uppercase;
  color:var(--steel);
  margin-bottom:14px;
}
.footer-col__list{display:flex;flex-direction:column;gap:9px}
.footer-link{
  display:inline-block;
  font-size:15px;
  color:#C3D6E6;
  transition:color var(--t-fast) var(--ease),padding-left var(--t-fast) var(--ease);
}
.footer-link:hover{color:var(--electric);padding-left:3px}
.footer-contact{min-width:0}
.footer-contact__title{
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.20em;
  text-transform:uppercase;
  color:var(--steel);
  margin-bottom:14px;
}
.footer-contact__row{
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:9px 0;
  border-bottom:1px solid var(--line-soft);
}
.footer-contact__key{
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--steel);
}
.footer-contact__value{
  font-family:var(--font-data);
  font-size:14px;
  line-height:1.6;
  letter-spacing:.01em;
  color:var(--ice);
  word-break:break-word;
}
.footer-contact__note{
  margin-top:14px;
  font-size:12.5px;
  line-height:1.7;
  color:var(--steel);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 28px;
  margin-top:clamp(36px,5vw,64px);
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-family:var(--font-data);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--steel);
}
.footer-legal{color:var(--steel)}
.footer-meta{color:var(--steel)}

/* ---------- 9. 滚动显现 ---------- */
[data-reveal]{
  transition:opacity 340ms var(--ease),transform 340ms var(--ease);
}
[data-reveal].is-pending{opacity:0;transform:translateY(14px)}
[data-reveal].is-pending.is-visible{opacity:1;transform:none}

/* ---------- 10. 桌面 / 平板 / 移动 ---------- */
@media (min-width:1080px){
  body{
    padding-left:var(--rail-brand-w);
    padding-right:var(--rail-nav-w);
  }
  .rail-brand{
    position:fixed;
    top:0;bottom:0;left:0;
    z-index:var(--z-header);
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:space-between;
    width:var(--rail-brand-w);
    padding:24px 0;
    background:var(--deep-sea);
    border-right:1px solid var(--line);
  }
  .rail-nav{
    position:fixed;
    top:0;bottom:0;right:0;
    z-index:calc(var(--z-header) - 10);
    display:flex;
    flex-direction:column;
    width:var(--rail-nav-w);
    padding:32px 22px 26px;
    overflow-y:auto;
    background:var(--deep-sea);
    border-left:1px solid var(--line);
  }
  .matrix-bar{display:none}
}

@media (max-width:1079.98px){
  .rail-brand{display:none}
  .rail-nav{
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:var(--z-panel);
    max-height:min(76vh,640px);
    overflow-y:auto;
    padding:20px 20px calc(var(--matrix-bar-h) + 16px);
    border-top:1px solid var(--electric);
    background:rgba(4,24,38,.985);
    transform:translateY(105%);
    visibility:hidden;
    transition:transform var(--t-med) var(--ease),visibility var(--t-med) var(--ease);
  }
  .site-header[data-open] .rail-nav{
    transform:translateY(0);
    visibility:visible;
  }
  .site-header[data-open] .matrix-bar{border-top-color:var(--electric)}
  .matrix-bar{
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:var(--z-bar);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    height:var(--matrix-bar-h);
    padding:0 16px;
    background:rgba(4,24,38,.94);
    border-top:1px solid var(--line);
  }
  .rail-nav__foot{margin-top:20px}
}

@media (min-width:720px){
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
}
@media (min-width:1080px){
  .footer-top{grid-template-columns:minmax(0,1.1fr) minmax(0,1.5fr) minmax(0,1fr)}
  .footer-brand{grid-column:auto}
}

/* ---------- 11. 降低动效偏好 ---------- */
@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].is-pending{opacity:1;transform:none}
  .rail-brand__progress{transition:none}
  .panel:hover{transform:none}
  .btn:hover{transform:none}
  .footer-link:hover{padding-left:0}
}