/* ============================================================
   云开赛场 · 共享样式表  /assets/site.css
   夜场战术板：夜蓝 + 墨绿铺底，暖纸面承载长文，柠檬黄只点标数据
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --ink-900:#0A1A2A;
  --ink-850:#07131F;
  --ink-800:#10322C;
  --line:#1E4A41;
  --paper:#F3EAD6;
  --paper-2:#E3D7BC;
  --zest:#E8FF52;
  --ember:#FF8A3D;
  --flood:#7FD8C6;
  --mist:#F1F5F2;
  --muted:#A9BAB2;
  --ink:#17211F;

  --font-display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","IBM Plex Mono",Menlo,Consolas,monospace;

  --shell-w:1240px;
  --gutter:clamp(16px,4vw,56px);
  --brand-h:46px;
  --nav-h:58px;

  --r-lg:28px 8px 28px 8px;
  --r-md:18px 6px 18px 6px;
  --pill:999px;

  --sp:clamp(18px,3vw,32px);
  --sec:clamp(56px,8vw,110px);
  --ease:cubic-bezier(.22,.7,.3,1);
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
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%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}
:focus-visible{outline:2px solid var(--zest);outline-offset:3px;border-radius:4px}

/* ---------- 3. 基础排版 ---------- */
body{
  background:var(--ink-900);
  color:var(--mist);
  font-family:var(--font-display);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  overflow-x:hidden;
}
::selection{background:var(--zest);color:var(--ink)}
#main-content{scroll-margin-top:calc(var(--nav-h) + 16px)}

.shell{
  width:min(100% - (var(--gutter) * 2), var(--shell-w));
  margin-inline:auto;
}
.visually-hidden{
  position:absolute;width:1px;height:1px;margin:-1px;padding:0;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

.display{
  font-family:var(--font-display);
  font-weight:900;
  font-stretch:88%;
  letter-spacing:-.01em;
  line-height:1.06;
}
.h1{font-size:clamp(44px,8vw,88px)}
.h2{font-size:clamp(30px,4.4vw,44px);line-height:1.14}
.h3{font-size:clamp(22px,2.6vw,30px);line-height:1.26}
.lede{font-size:clamp(17px,1.5vw,18px);line-height:1.8;color:var(--muted);max-width:38em}
.kicker{display:inline-block;font-size:12px;letter-spacing:.22em;color:var(--zest);font-family:var(--font-mono)}
.annot{
  writing-mode:vertical-rl;
  font-size:12px;letter-spacing:.18em;line-height:1;
  color:var(--muted);font-family:var(--font-mono);
}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 4. 章节节奏 ---------- */
.section{padding-block:var(--sec);position:relative}
.section--tight{padding-block:clamp(32px,5vw,60px)}
.section--green{background:var(--ink-800)}
.section--paper{background:var(--paper);color:var(--ink)}
.section--paper .lede,.section--paper .annot,.section--paper .figure__cap{color:#5B6A63}
.section--paper .kicker{color:#7A6A22}
.rule{
  height:clamp(10px,1.4vw,18px);
  background:linear-gradient(90deg,var(--zest) 0 22%,var(--line) 22% 100%);
  opacity:.85;
}
.tactics{
  background-image:
    linear-gradient(rgba(30,74,65,.4) 1px,transparent 1px),
    linear-gradient(90deg,rgba(30,74,65,.4) 1px,transparent 1px);
  background-size:44px 44px;
}

/* ---------- 5. 栅格 ---------- */
.grid12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(14px,2vw,28px);
}
.spine{grid-column:1 / span 3}
.body-col{grid-column:4 / span 7}
.side-col{grid-column:11 / span 2}
.wide-col{grid-column:1 / -1}

/* ---------- 6. 页头 ---------- */
.skip-link{
  position:fixed;
  left:50%;top:10px;
  transform:translate(-50%,-180%);
  z-index:120;
  background:var(--zest);color:var(--ink);
  padding:10px 18px;border-radius:var(--pill);
  font-size:14px;font-weight:600;letter-spacing:.04em;
  transition:transform .22s var(--ease);
}
.skip-link:focus{transform:translate(-50%,0)}

.site-head{
  position:sticky;
  top:calc(-1 * var(--brand-h));
  z-index:60;
  background:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.head-band{width:100%}

.head-band--brand{
  height:var(--brand-h);
  background:var(--ink-850);
  border-bottom:1px solid rgba(30,74,65,.7);
  overflow:hidden;
}
.head-brand{
  height:100%;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;
  font-size:13px;
}
.head-sign{display:flex;align-items:baseline;gap:14px;min-width:0}
.head-sign__mark{
  font-family:var(--font-display);font-weight:800;font-stretch:88%;
  letter-spacing:.06em;color:var(--mist);white-space:nowrap;
}
.head-sign__line{
  font-size:12px;letter-spacing:.08em;color:var(--muted);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.head-meta{display:flex;align-items:center;gap:clamp(10px,2vw,22px);white-space:nowrap}
.meta-chip{display:inline-flex;align-items:baseline;gap:6px;font-size:12px;color:var(--muted)}
.meta-chip__k{letter-spacing:.12em}
.meta-chip__v{color:var(--zest);font-size:13px}
.head-mail{
  font-size:12px;letter-spacing:.1em;color:var(--mist);
  border-bottom:1px solid var(--line);padding-bottom:2px;
  transition:color .2s,border-color .2s;
}
.head-mail:hover{color:var(--zest);border-color:var(--zest)}

.head-band--nav{
  background:linear-gradient(90deg,rgba(16,50,44,.96),rgba(10,26,42,.96));
  transition:box-shadow .3s var(--ease),background .3s var(--ease);
}
.site-head[data-condensed] .head-band--nav{
  box-shadow:0 14px 30px -18px rgba(0,0,0,.95);
  background:linear-gradient(90deg,rgba(13,42,37,.99),rgba(8,21,34,.99));
}
.head-nav{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;
  min-height:var(--nav-h);
}
.nav-list{display:flex;align-items:center;gap:clamp(12px,2vw,30px);flex-wrap:wrap}
.nav-list a{
  position:relative;display:inline-block;
  padding:10px 2px;
  font-size:15px;letter-spacing:.03em;color:var(--mist);
  transition:color .22s var(--ease);
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;
  background:var(--zest);transform:scaleX(0);transform-origin:left;
  transition:transform .26s var(--ease);
}
.nav-list a:hover{color:var(--zest)}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a[aria-current="page"]{color:var(--zest)}
.nav-list a[aria-current="page"]::after{transform:scaleX(1)}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:8px 14px;border:1px solid var(--line);border-radius:var(--pill);
  color:var(--mist);font-size:13px;letter-spacing:.1em;cursor:pointer;
  transition:border-color .2s,color .2s;
}
.nav-toggle:hover{border-color:var(--zest);color:var(--zest)}
.nav-toggle__bars{position:relative;width:16px;height:10px;display:inline-block}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:currentColor;
  transition:transform .24s var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{bottom:0}
.site-head[data-open] .nav-toggle__bars::before{transform:translateY(4px) rotate(45deg)}
.site-head[data-open] .nav-toggle__bars::after{transform:translateY(-4px) rotate(-45deg)}

/* ---------- 7. 页脚 ---------- */
.site-foot{
  background:var(--ink-850);
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:14px;
}
.foot-wrap{
  display:grid;
  grid-template-columns:minmax(200px,1.35fr) repeat(5,minmax(110px,1fr));
  gap:clamp(20px,2.6vw,36px);
  padding:clamp(40px,6vw,76px) 0 clamp(26px,3vw,40px);
}
.foot-brand{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.foot-logo{
  font-family:var(--font-display);font-weight:900;font-stretch:88%;
  font-size:22px;letter-spacing:.06em;color:var(--mist);
}
.foot-tag{font-size:13px;color:var(--flood);letter-spacing:.06em}
.foot-note{font-size:13px;line-height:1.7;color:var(--muted);max-width:24em}
.foot-col__t{
  font-size:12px;font-weight:600;letter-spacing:.2em;
  color:var(--mist);margin-bottom:14px;padding-left:12px;position:relative;
}
.foot-col__t::before{
  content:"";position:absolute;left:0;top:.45em;
  width:4px;height:12px;background:var(--zest);border-radius:1px;
}
.foot-list{display:flex;flex-direction:column;gap:9px}
.foot-list a{
  color:var(--muted);font-size:14px;
  transition:color .2s var(--ease),transform .2s var(--ease);
  display:inline-block;
}
.foot-list a:hover{color:var(--zest);transform:translateX(3px)}
.foot-contact{display:flex;flex-direction:column;gap:4px;font-style:normal;font-size:13px;line-height:1.6}
.foot-contact__k{color:var(--line);color:#4C6A61;font-size:11px;letter-spacing:.16em;margin-top:8px}
.foot-contact__link{
  margin-top:12px;color:var(--ember);border-bottom:1px solid rgba(255,138,61,.5);
  align-self:flex-start;padding-bottom:2px;transition:color .2s,border-color .2s;
}
.foot-contact__link:hover{color:var(--zest);border-color:var(--zest)}
.foot-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 24px;
  border-top:1px solid var(--line);
  padding:18px 0 26px;
  font-size:12px;letter-spacing:.04em;
}
.foot-legal__copy{color:var(--muted)}
.foot-legal__links{display:flex;flex-wrap:wrap;gap:8px 22px}
.foot-legal__links a{color:var(--mist);transition:color .2s}
.foot-legal__links a:hover{color:var(--zest)}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--pill);
  border:1px solid var(--line);
  font-size:15px;letter-spacing:.04em;cursor:pointer;
  transition:transform .2s var(--ease),background .2s,color .2s,border-color .2s;
}
.btn:hover{transform:translateY(-2px)}
.btn--zest{background:var(--zest);color:var(--ink);border-color:var(--zest);font-weight:600}
.btn--zest:hover{background:#f2ff86;border-color:#f2ff86}
.btn--ember{background:transparent;color:var(--ember);border-color:var(--ember)}
.btn--ember:hover{background:var(--ember);color:var(--ink)}
.btn--ghost{background:transparent;color:var(--mist)}
.btn--ghost:hover{border-color:var(--zest);color:var(--zest)}
.btn--sm{padding:9px 16px;font-size:13px}

/* ---------- 9. 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;color:var(--muted);
  font-family:var(--font-mono);
}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li + li::before{content:"/";color:var(--line)}
.crumbs a:hover{color:var(--zest)}
.crumbs [aria-current="page"]{color:var(--flood)}

/* ---------- 10. 纸面与正文 ---------- */
.sheet{
  background:var(--paper);color:var(--ink);
  border-radius:var(--r-md);
  padding:clamp(22px,3.4vw,44px);
  box-shadow:0 26px 50px -34px rgba(0,0,0,.9);
}
.sheet--wide{grid-column:1 / -1}
.sheet .kicker{color:#7A6A22}
.sheet + .sheet{margin-top:var(--sp)}
.prose{max-width:34em}
.prose p + p{margin-top:1.05em}
.prose h3{margin-top:1.6em;margin-bottom:.5em}
.prose ul{display:flex;flex-direction:column;gap:8px;margin-top:1em}
.prose li{padding-left:18px;position:relative}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:2px;background:var(--ember)}
.prose a{border-bottom:1px solid var(--line);transition:border-color .2s,color .2s}
.prose a:hover{color:#8a3f10;border-color:var(--ember)}

/* ---------- 11. 卡片 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:clamp(14px,2vw,24px);
  align-items:start;
}
.card{
  background:rgba(16,50,44,.55);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:clamp(18px,2.2vw,26px);
  transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.card:hover{border-color:rgba(127,216,198,.6);transform:translateY(-3px)}
.card--lead{
  grid-column:span 2;
  background:linear-gradient(150deg,rgba(16,50,44,.95),rgba(10,26,42,.95));
  border-radius:var(--r-lg);
}
.card--note{
  background:transparent;border-style:dashed;
  font-size:13px;color:var(--muted);padding:16px 18px;
}
.section--paper .card{background:#fffdf6;border-color:#DACDAE;color:var(--ink)}
.section--paper .card--note{background:var(--paper-2);color:#4A574F}

.tag{
  display:inline-block;padding:3px 10px;border-radius:var(--pill);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  border:1px solid var(--line);color:var(--muted);
}
.tag--zest{color:var(--ink);background:var(--zest);border-color:var(--zest)}
.tag--ember{color:var(--ember);border-color:var(--ember)}

/* ---------- 12. 图片容器 ---------- */
.figure{
  position:relative;margin:0;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(140deg,#0C2233,#0E2A26);
  aspect-ratio:16/10;
}
.figure > img{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(.92) contrast(1.05) brightness(.94);
}
.figure--wide{aspect-ratio:21/9}
.figure--tall{aspect-ratio:4/5}
.figure--tilt{transform:rotate(-1.2deg)}
.figure--paper{
  padding:12px;background:var(--paper);border:0;border-radius:2px;
  box-shadow:0 20px 36px -30px rgba(0,0,0,.85);
}
.figure--paper > img{border-radius:1px}
.figure__cap{
  margin-top:10px;font-size:12px;letter-spacing:.14em;
  color:var(--muted);font-family:var(--font-mono);
}
.figure-grid{display:grid;gap:clamp(12px,2vw,20px);grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

/* ---------- 13. 技能树式路径 ---------- */
.path{display:flex;flex-direction:column;gap:clamp(14px,2vw,22px)}
.path__item{
  position:relative;
  display:grid;grid-template-columns:auto 1fr;gap:16px;
  padding:clamp(16px,2vw,24px);
  border:1px solid var(--line);border-radius:var(--r-md);
  background:rgba(10,26,42,.6);
}
.path__item + .path__item::before{
  content:"";position:absolute;left:calc(clamp(16px,2vw,24px) + 21px);
  top:calc(-1 * clamp(14px,2vw,22px));
  width:1px;height:clamp(14px,2vw,22px);
  background:linear-gradient(var(--flood),transparent);
}
.path__num{
  display:grid;place-items:center;
  width:44px;height:44px;border-radius:14px 4px 14px 4px;
  background:var(--zest);color:var(--ink);
  font-family:var(--font-mono);font-size:16px;font-weight:700;
}
.path__body{min-width:0}
.path__body h3{font-size:18px;margin-bottom:6px;color:var(--mist)}
.path__body p{font-size:14px;color:var(--muted);line-height:1.7}

/* ---------- 14. 计量条 ---------- */
.meter{height:8px;border-radius:var(--pill);background:rgba(30,74,65,.7);overflow:hidden}
.meter__fill{
  height:100%;display:block;width:0;
  background:linear-gradient(90deg,var(--zest),var(--ember));
  transition:width .8s var(--ease);
}
.section--paper .meter{background:var(--paper-2)}

/* ---------- 15. 标签页 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:var(--sp)}
.tab{
  padding:9px 18px;border-radius:var(--pill);
  border:1px solid var(--line);color:var(--muted);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;cursor:pointer;
  transition:color .2s,border-color .2s,background .2s;
}
.tab:hover{color:var(--mist);border-color:var(--flood)}
.tab[aria-selected="true"]{background:var(--zest);color:var(--ink);border-color:var(--zest)}
.tabpanel{min-height:1px}
.tabpanel:focus{outline:none}

/* ---------- 16. 滚动工具 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;
  z-index:90;pointer-events:none;background:transparent;
}
.scroll-progress__fill{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--zest),var(--ember));
}
.to-top{
  position:fixed;
  right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);
  z-index:80;width:46px;height:46px;
  display:grid;place-items:center;
  border:1px solid var(--line);border-radius:14px 4px 14px 4px;
  background:rgba(16,50,44,.94);color:var(--zest);
  cursor:pointer;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .28s var(--ease),transform .28s var(--ease),border-color .2s;
}
.to-top[data-visible]{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{border-color:var(--zest)}
.to-top__glyph{font-family:var(--font-mono);font-size:16px;line-height:1}

/* ---------- 17. 显现动效 ---------- */
.has-js [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .62s var(--ease),transform .62s var(--ease);
  transition-delay:var(--rv-delay,0ms);
}
.has-js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 18. 响应式 ---------- */
@media (max-width:1080px){
  :root{--brand-h:44px}
  .foot-wrap{grid-template-columns:repeat(3,minmax(0,1fr))}
  .foot-brand{grid-column:1 / -1}
}
@media (max-width:1024px){
  .spine,.body-col,.side-col{grid-column:1 / -1}
  .side-col{display:flex;flex-wrap:wrap;gap:14px}
  .annot{writing-mode:horizontal-tb;letter-spacing:.18em}
}
@media (max-width:860px){
  :root{--brand-h:40px;--nav-h:52px}
  .head-sign__line{display:none}
  .nav-toggle{display:inline-flex}
  .head-nav{flex-wrap:wrap;align-items:center}
  .nav-list{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--ink-800);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:4px var(--gutter) 14px;
    max-height:0;overflow:hidden;visibility:hidden;
    transition:max-height .32s var(--ease),visibility .32s;
    box-shadow:0 24px 40px -26px rgba(0,0,0,.95);
  }
  .site-head[data-open] .nav-list{max-height:min(70vh,420px);overflow:auto;visibility:visible}
  .nav-list li{width:100%}
  .nav-list a{display:block;width:100%;padding:14px 0;font-size:16px;border-bottom:1px solid rgba(30,74,65,.55)}
  .nav-list a::after{display:none}
  .nav-list a[aria-current="page"]{padding-left:14px;box-shadow:inset 3px 0 0 var(--zest)}
  .card--lead{grid-column:span 1}
}
@media (max-width:640px){
  :root{--brand-h:38px}
  .head-mail{display:none}
  .meta-chip__k{display:none}
  .foot-wrap{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-legal{flex-direction:column;align-items:flex-start}
  .figure,.figure--wide{aspect-ratio:4/3}
}

/* ---------- 19. 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;
    scroll-behavior:auto !important;
  }
  .has-js [data-reveal]{opacity:1;transform:none}
  .btn:hover,.card:hover{transform:none}
}