/* ==========================================================================
   PG电竞 · 共享样式表  /assets/site.css
   深墨蓝基调 · 霓虹青结构色 · 琥珀金数字色 · 奶油纸长文区
   ========================================================================== */

/* ---------- 01. 设计令牌 ---------- */
:root{
  --ink:#0B1B2B;
  --ink-2:#12293F;
  --ink-3:#17334D;
  --cyan:#2FE3C8;
  --cyan-mist:#7FF0DC;
  --amber:#E8B33C;
  --amber-soft:#F6D486;
  --paper:#F4EFE4;
  --paper-ink:#2A211B;
  --rust:#D9552F;
  --rust-soft:#FF9B78;
  --haze:#7C93A8;
  --white:#FFFFFF;

  --line:rgba(124,147,168,.28);
  --line-soft:rgba(124,147,168,.16);

  --rail-w:248px;
  --rail-size:248px;
  --strip-h:58px;
  --shell-max:1280px;

  --font-display:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-body:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono",Menlo,Consolas,monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:.24s;
}

/* ---------- 02. Reset 与中文排版 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--strip-h) + 20px);
  -webkit-tap-highlight-color:transparent;
}
body{
  margin:0;
  padding:var(--strip-h) 0 0 var(--rail-w);
  background:var(--ink);
  color:var(--white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.25;font-weight:800;letter-spacing:-.01em}
strong{font-weight:700}
::selection{background:rgba(47,227,200,.3);color:var(--white)}

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

/* ---------- 03. 通用排版工具 ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.num{
  font-family:var(--font-mono);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  letter-spacing:0;
  color:var(--amber);
}
.lede{
  max-width:64ch;
  font-size:clamp(16.5px,1.5vw,19px);
  line-height:1.75;
  color:rgba(255,255,255,.78);
}
.rule{
  height:1px;
  border:0;
  margin:clamp(28px,4vw,52px) 0;
  background:linear-gradient(90deg,var(--line),rgba(124,147,168,0));
}

/* ---------- 04. 外壳与网格 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:clamp(18px,3vw,40px);
}
.grid{display:grid;gap:clamp(16px,2vw,26px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.stack{display:flex;flex-direction:column;gap:var(--stack-gap,18px)}
#main-content{display:block;width:100%}

/* ---------- 05. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:10px 18px;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.3;
  text-align:center;
  border:1px solid transparent;
  border-radius:2px;
  cursor:pointer;
  transition:background-color var(--dur) var(--ease),
             color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),
             transform var(--dur) var(--ease);
}
.btn--primary{background:var(--cyan);color:#062A26;border-color:var(--cyan)}
.btn--primary:hover{background:var(--cyan-mist);border-color:var(--cyan-mist);transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--cyan);border-color:rgba(47,227,200,.45)}
.btn--ghost:hover{background:rgba(47,227,200,.1);border-color:var(--cyan)}
.btn--amber{background:var(--amber);color:#241A05;border-color:var(--amber)}
.btn--amber:hover{background:var(--amber-soft);border-color:var(--amber-soft);transform:translateY(-1px)}
.btn--block{width:100%}

/* ---------- 06. 标签 / 卡片 / 纸面板 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--rust-soft);
  background:rgba(217,85,47,.14);
  border:1px solid rgba(217,85,47,.42);
  border-radius:2px;
}
.card{
  position:relative;
  padding:clamp(18px,2.2vw,26px);
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:2px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.035), 0 16px 32px -28px rgba(0,0,0,.95);
  transition:border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.card:hover{border-color:rgba(47,227,200,.45);transform:translateY(-2px)}
.card__title{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--white)}
.card__meta{
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--haze);
}
.paper-panel{
  padding:clamp(22px,3vw,44px);
  background:var(--paper);
  color:var(--paper-ink);
  border:1px solid #DED4C2;
  border-radius:2px;
}
.paper-panel h2,.paper-panel h3,.paper-panel h4{color:var(--paper-ink)}
.paper-panel p,.paper-panel li,.paper-panel dd{color:#3B3029}
.paper-panel a{color:#9A3A1C;text-decoration:underline;text-underline-offset:3px}
.paper-panel .num{color:#8A5A0B}

/* ---------- 07. 图片容器基础规则（页面阶段放入 SVG / 占位图） ---------- */
.media{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(150deg,var(--ink-3),var(--ink-2) 60%,var(--ink));
  border:1px solid var(--line);
  border-radius:2px;
}
.media img,.media svg{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:16/7}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:4/5}
.media--caption{padding-bottom:44px}
.media__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:12px 14px;
  font-size:12.5px;
  letter-spacing:.05em;
  color:rgba(255,255,255,.82);
  background:linear-gradient(180deg,rgba(11,27,43,0),rgba(11,27,43,.94) 55%);
}

/* ---------- 08. 跳过链接 ---------- */
.skip-link{
  position:fixed;
  top:10px;left:10px;
  z-index:130;
  padding:10px 16px;
  font-size:13px;
  font-weight:700;
  color:#062A26;
  background:var(--cyan);
  border-radius:2px;
  transform:translateY(-200%);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 09. 页头：左侧品牌轨道 ---------- */
.site-header{position:relative;z-index:70}

.rail{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--rail-size);
  z-index:70;
  overflow:hidden;
  border-right:1px solid var(--line);
  background:
    radial-gradient(130% 55% at 0% 0%, rgba(47,227,200,.12), rgba(47,227,200,0) 62%),
    linear-gradient(180deg,#0B1B2B 0%,#102943 58%,#0B1B2B 100%);
  transform:translateX(0);
  transition:transform .3s var(--ease);
}
.rail__sweep{
  position:absolute;
  left:0;right:0;top:0;
  height:150px;
  z-index:1;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(47,227,200,0),rgba(47,227,200,.17),rgba(47,227,200,0));
  animation:railSweep 8s linear infinite;
}
@keyframes railSweep{
  0%{transform:translateY(-150px);opacity:0}
  12%{opacity:1}
  88%{opacity:1}
  100%{transform:translateY(100vh);opacity:0}
}
.rail__inner{
  position:relative;
  z-index:2;
  display:flex;
  flex-direction:column;
  width:100%;
  height:100%;
  padding:26px 22px 22px;
  overflow-y:auto;
  overscroll-behavior:contain;
}
.brand{
  display:flex;
  align-items:baseline;
  gap:7px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
}
.brand__mark{
  font-family:var(--font-display);
  font-size:38px;
  font-weight:900;
  line-height:1;
  letter-spacing:-.05em;
  color:var(--white);
}
.brand__sub{
  font-size:14px;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--cyan);
}
.rail__line{
  margin-top:12px;
  font-size:12.5px;
  line-height:1.6;
  letter-spacing:.02em;
  color:var(--haze);
}
.rail__nav{margin-top:22px;flex:1 1 auto}
.nav-list{display:flex;flex-direction:column;gap:1px}
.nav-list__item{display:block;width:100%}
.nav-link{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:44px;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,.72);
  border-left:2px solid transparent;
  transition:color var(--dur) var(--ease),
             background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease);
}
.nav-link::before{
  content:attr(data-index);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--haze);
  transition:color var(--dur) var(--ease);
}
.nav-link:hover{color:var(--cyan-mist);background:rgba(47,227,200,.07)}
.nav-link:hover::before{color:var(--cyan-mist)}
.nav-link[aria-current="page"]{
  color:var(--cyan);
  border-left-color:var(--cyan);
  background:linear-gradient(90deg,rgba(47,227,200,.16),rgba(47,227,200,0));
}
.nav-link[aria-current="page"]::before{color:var(--cyan)}
.rail__foot{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
}
.rail__stat{font-size:12.5px;letter-spacing:.03em;color:var(--haze)}
.rail__stat .num{font-size:14px}

/* ---------- 10. 页头：顶部说明带 ---------- */
.topstrip{
  position:fixed;
  top:0;left:var(--rail-w);right:0;
  z-index:56;
  display:flex;
  align-items:center;
  gap:20px;
  height:var(--strip-h);
  padding:0 clamp(18px,3vw,34px);
  background:rgba(11,27,43,.92);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  transition:height var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.topstrip__line{
  font-size:12.5px;
  letter-spacing:.04em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  color:rgba(255,255,255,.74);
}
.topstrip__dim{color:var(--haze)}
.topstrip__spacer{flex:1 1 auto;min-width:8px}
.topstrip__cta{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.05em;
  color:var(--cyan);
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.topstrip__cta:hover{color:var(--cyan-mist);border-bottom-color:var(--cyan-mist)}
.topstrip__progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  background:rgba(47,227,200,.12);
  overflow:hidden;
}
.topstrip__progress-fill{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--amber) 100%);
}
.site-header.is-condensed .topstrip{height:44px;background:rgba(9,22,36,.96)}
.site-header.is-condensed .topstrip__dim{opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease)}

/* ---------- 11. 移动端导航开关 ---------- */
.nav-toggle{
  position:fixed;
  top:8px;left:10px;
  z-index:90;
  display:none;
  align-items:center;
  gap:8px;
  min-height:40px;
  padding:8px 12px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--white);
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:2px;
  cursor:pointer;
}
.nav-toggle__icon{position:relative;display:block;width:16px;height:10px}
.nav-toggle__icon::before,
.nav-toggle__icon::after{
  content:"";
  position:absolute;left:0;
  width:16px;height:1.5px;
  background:var(--cyan);
  transition:transform var(--dur) var(--ease),top var(--dur) var(--ease);
}
.nav-toggle__icon::before{top:0}
.nav-toggle__icon::after{top:8px}
.site-header[data-open] .nav-toggle__icon::before{top:4px;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle__icon::after{top:4px;transform:rotate(-45deg)}
.nav-toggle__label{display:inline-block}

/* ---------- 12. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,8vw,120px);
  background:linear-gradient(180deg,#0B1B2B 0%,#091624 100%);
  border-top:1px solid var(--line);
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.74);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;
  width:min(300px,42%);
  height:2px;
  background:linear-gradient(90deg,var(--cyan),rgba(47,227,200,0));
}
.footer__inner{
  max-width:var(--shell-max);
  margin-inline:auto;
  padding:clamp(40px,5vw,72px) clamp(18px,3vw,40px) 0;
}
.footer__top{
  display:grid;
  grid-template-columns:1.45fr 1fr 1.35fr;
  gap:clamp(26px,4vw,56px);
}
.footer__brand{min-width:0}
.footer__mark{
  font-family:var(--font-display);
  font-size:26px;
  font-weight:900;
  letter-spacing:-.03em;
  color:var(--white);
}
.footer__mark span{
  margin-left:6px;
  font-size:14px;
  letter-spacing:.22em;
  color:var(--cyan);
}
.footer__desc{margin-top:14px;max-width:36ch;color:var(--haze)}
.footer__cadence{
  margin-top:14px;
  padding-left:12px;
  border-left:2px solid rgba(232,179,60,.6);
  font-size:13px;
  color:var(--amber-soft);
}
.footer__title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--amber);
}
.footer__links{display:flex;flex-direction:column;gap:1px}
.footer__link{
  display:inline-flex;
  align-items:center;
  min-height:38px;
  color:rgba(255,255,255,.74);
  transition:color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.footer__link:hover{color:var(--cyan);padding-left:6px}
.contact-list{display:flex;flex-direction:column;gap:12px}
.contact-list__row{
  display:grid;
  grid-template-columns:74px minmax(0,1fr);
  gap:12px;
  align-items:baseline;
}
.contact-list dt{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--haze);
}
.contact-list dd{
  word-break:break-word;
  color:rgba(255,255,255,.84);
}
.footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  margin-top:clamp(32px,4vw,56px);
  padding:20px 0 28px;
  border-top:1px solid var(--line-soft);
  font-size:12.5px;
  color:var(--haze);
}
.footer__legal{font-family:var(--font-mono);letter-spacing:.05em}
.footer__copy{letter-spacing:.02em}

/* ---------- 13. 返回顶部（由 site.js 注入） ---------- */
.to-top{
  position:fixed;
  right:clamp(14px,2.4vw,28px);
  bottom:clamp(14px,2.4vw,28px);
  z-index:80;
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:10px 14px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--cyan);
  background:rgba(18,41,63,.94);
  border:1px solid rgba(47,227,200,.4);
  border-radius:2px;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity var(--dur) var(--ease),
             transform var(--dur) var(--ease),
             visibility var(--dur) var(--ease),
             background-color var(--dur) var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:rgba(47,227,200,.16)}
.to-top__arrow{
  display:block;
  width:8px;height:8px;
  border-left:1.5px solid currentColor;
  border-top:1.5px solid currentColor;
  transform:rotate(45deg) translate(1px,1px);
}
.to-top__text{line-height:1}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1180px){
  :root{--rail-w:214px;--rail-size:214px}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:1024px){
  .footer__top{grid-template-columns:1fr 1fr}
  .footer__brand{grid-column:1 / -1}
}

@media (max-width:900px){
  :root{--rail-w:0px;--strip-h:54px}
  body{padding-left:0}
  .rail{
    width:min(288px,84vw);
    transform:translateX(-100%);
    box-shadow:0 0 60px rgba(0,0,0,.62);
  }
  .site-header[data-open] .rail{transform:translateX(0)}
  .rail__inner{padding-top:66px}
  .nav-toggle{display:inline-flex}
  .topstrip{left:0;padding-left:100px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .footer__top{grid-template-columns:1fr}
  .contact-list__row{grid-template-columns:68px minmax(0,1fr)}
}

@media (max-width:560px){
  .topstrip__cta{font-size:12.5px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}

/* ---------- 15. 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;
  }
  .rail__sweep{display:none}
}