/* ===================================================================
   企鹅赛场 · /assets/site.css
   共享外壳：刊头、栏目条、页脚、通用组件
   =================================================================== */

/* ---------- 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,ul,ol,li,figure,figcaption,blockquote,dl,dt,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video,canvas{display:block;max-width:100%}
img{height:auto}
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%}
input,textarea,select{font:inherit;color:inherit}

/* ---------- 2. Tokens ---------- */
:root{
  --ink-deep:#0A2233;
  --ink-slate:#123A52;
  --ice:#F5F8FA;
  --ice-line:#E2EAF0;
  --fog:#8FA6B5;
  --slate:#5B7486;
  --orange:#FF6A2B;
  --cyan:#2BD9C4;
  --char:#05141D;
  --coral:#E4574C;

  --font-display:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,"SFMono-Regular",monospace;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;

  --wrap:1180px;
  --gutter:clamp(18px,4vw,40px);
  --shadow-hard:6px 6px 0 var(--char);
  --shadow-soft:4px 4px 0 var(--char);
  --speed:.16s;
  --header-h:auto;
}

/* ---------- 3. Base typography ---------- */
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-deep);
  background:var(--ice);
  -webkit-font-smoothing:antialiased;
  word-break:break-word;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.28;letter-spacing:0}
p{text-wrap:pretty}
strong{font-weight:600}
::selection{background:var(--orange);color:var(--char)}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px}
#main-content{scroll-margin-top:140px}

/* ---------- 4. Skip link ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:12px;
  z-index:200;
  padding:10px 18px;
  background:var(--orange);
  color:var(--char);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  border:2px solid var(--char);
  box-shadow:var(--shadow-soft);
  transition:top var(--speed) ease;
}
.skip-link:focus-visible{top:12px}

/* ---------- 5. Header / 刊头式导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background-color:var(--ink-deep);
  background-image:
    linear-gradient(180deg,rgba(43,217,196,.07),rgba(10,34,51,0) 62%),
    repeating-linear-gradient(90deg,rgba(143,166,181,.13) 0 1px,transparent 1px 96px);
  color:var(--ice);
  border-bottom:2px solid var(--char);
}
.header-top{
  max-width:var(--wrap);
  margin:0 auto;
  padding:14px var(--gutter);
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
}
.sync-cluster{
  display:flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--fog);
  text-transform:uppercase;
  white-space:nowrap;
}
.sync-dot{
  width:7px;height:7px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(43,217,196,.18);
}
.masthead{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:5px;
  text-align:center;
  padding:2px 6px;
}
.masthead__name{
  font-family:var(--font-display);
  font-weight:300;
  font-size:clamp(24px,3.4vw,38px);
  line-height:1;
  letter-spacing:.18em;
  color:var(--ice);
  transition:color var(--speed) ease;
}
.masthead:hover .masthead__name,
.masthead:focus-visible .masthead__name{color:var(--orange)}
.masthead__sub{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  color:var(--fog);
}
.header-actions{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:8px;
  flex-wrap:nowrap;
}
.action-link{
  display:inline-block;
  padding:7px 12px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--ice);
  border:1px solid rgba(245,248,250,.3);
  background:rgba(245,248,250,.04);
  transition:border-color var(--speed) ease,color var(--speed) ease,transform var(--speed) ease;
  white-space:nowrap;
}
.action-link:hover,
.action-link:focus-visible{
  border-color:var(--orange);
  color:var(--orange);
  transform:translateY(-2px);
}
.action-link--accent{
  background:var(--orange);
  border-color:var(--orange);
  color:var(--char);
  font-weight:600;
  box-shadow:3px 3px 0 var(--char);
}
.action-link--accent:hover,
.action-link--accent:focus-visible{
  background:#FF7C43;
  border-color:#FF7C43;
  color:var(--char);
  transform:translate(-1px,-2px);
  box-shadow:4px 5px 0 var(--char);
}
.nav-toggle{
  display:none;
  width:44px;
  height:38px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  border:1px solid rgba(245,248,250,.3);
  background:rgba(245,248,250,.04);
}
.nav-toggle__bar{
  display:block;
  width:18px;
  height:2px;
  background:var(--ice);
  transition:transform var(--speed) ease,opacity var(--speed) ease;
}
.nav-toggle[aria-expanded="true"]{border-color:var(--orange)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar{background:var(--orange)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.header-navbar{
  border-top:1px solid rgba(143,166,181,.28);
  background:rgba(5,20,29,.32);
}
.site-nav{
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 var(--gutter);
}
.site-nav__list{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:stretch;
  gap:2px;
}
.site-nav__item{flex:0 0 auto;display:block}
.site-nav__link{
  position:relative;
  display:block;
  padding:13px 16px 15px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.12em;
  color:rgba(245,248,250,.82);
  transition:color var(--speed) ease;
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:16px;right:16px;bottom:0;
  height:3px;
  background:var(--orange);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--speed) ease;
}
.site-nav__link:hover{color:var(--ice)}
.site-nav__link:hover::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:#fff;font-weight:600}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1)}

.header-progress{
  height:3px;
  background:rgba(143,166,181,.22);
  overflow:hidden;
}
.header-progress__fill{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
}

/* ---------- 6. Footer ---------- */
.site-footer{
  margin-top:clamp(48px,7vw,96px);
  background-color:var(--char);
  background-image:
    repeating-linear-gradient(0deg,rgba(143,166,181,.08) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(90deg,rgba(143,166,181,.08) 0 1px,transparent 1px 64px);
  color:var(--ice);
  border-top:2px solid var(--ink-slate);
  padding-top:clamp(36px,5vw,64px);
}
.footer-grid{
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 var(--gutter);
  display:grid;
  grid-template-columns:1.15fr 1.45fr 1fr;
  gap:clamp(24px,4vw,52px);
  align-items:start;
}
.footer-brand{padding-right:12px}
.footer-penguin{width:44px;height:52px;margin-bottom:14px}
.footer-brand__name{
  font-family:var(--font-display);
  font-weight:300;
  font-size:26px;
  letter-spacing:.18em;
  line-height:1.1;
  color:var(--ice);
}
.footer-brand__note{
  margin-top:10px;
  font-size:13.5px;
  line-height:1.85;
  color:var(--fog);
  max-width:32ch;
}
.footer-col{min-width:0}
.footer-lists{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px;
}
.footer-list-group{min-width:0}
.footer-heading{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--fog);
  padding-bottom:9px;
  margin-bottom:12px;
  border-bottom:1px solid rgba(143,166,181,.28);
}
.footer-list{display:grid;gap:9px}
.footer-link{
  display:inline-block;
  font-size:14px;
  color:rgba(245,248,250,.86);
  border-bottom:2px solid transparent;
  padding-bottom:1px;
  transition:color var(--speed) ease,border-color var(--speed) ease,transform var(--speed) ease;
}
.footer-link:hover,
.footer-link:focus-visible{
  color:var(--orange);
  border-bottom-color:var(--orange);
  transform:translateX(2px);
}
.footer-meta{display:grid;gap:14px}
.footer-meta__item{display:grid;gap:3px}
.footer-meta__label{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--fog);
}
.footer-meta__value{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  line-height:1.6;
  color:rgba(245,248,250,.9);
  overflow-wrap:anywhere;
}
.mono-value{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
}
.copy-btn{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.06em;
  padding:2px 7px;
  border:1px solid rgba(143,166,181,.55);
  color:var(--fog);
  transition:border-color var(--speed) ease,color var(--speed) ease,background var(--speed) ease;
}
.copy-btn:hover,
.copy-btn:focus-visible{border-color:var(--orange);color:var(--orange);background:rgba(255,106,43,.1)}
.copy-btn.is-done{border-color:var(--cyan);color:var(--cyan);background:rgba(43,217,196,.12)}

.footer-legal{
  margin-top:clamp(30px,4vw,48px);
  border-top:1px solid rgba(143,166,181,.26);
}
.footer-legal__inner{
  max-width:var(--wrap);
  margin:0 auto;
  padding:16px var(--gutter) 28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  font-size:12px;
  color:var(--fog);
}
.legal-copy{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.05em;
  margin-right:auto;
}
.legal-links{display:flex;flex-wrap:wrap;gap:16px}
.legal-link{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.05em;
  color:var(--fog);
  border-bottom:1px solid transparent;
  transition:color var(--speed) ease,border-color var(--speed) ease;
}
.legal-link:hover,
.legal-link:focus-visible{color:var(--orange);border-bottom-color:var(--orange)}
.to-top{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  padding:5px 10px;
  color:var(--ice);
  border:1px solid rgba(143,166,181,.45);
  transition:border-color var(--speed) ease,color var(--speed) ease,transform var(--speed) ease;
}
.to-top:hover,
.to-top:focus-visible{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}

/* ---------- 7. Layout helpers ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.wrap--narrow{max-width:760px}
.stack > * + *{margin-top:clamp(16px,2vw,24px)}
.grid{display:grid;gap:clamp(18px,2.4vw,30px)}
.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))}

/* ---------- 8. Panels & type components ---------- */
.panel{
  position:relative;
  background:var(--ice);
  border:2px solid var(--char);
  box-shadow:var(--shadow-hard);
  padding:clamp(20px,3vw,36px);
}
.panel--dark{background:var(--ink-deep);color:var(--ice)}
.panel--slate{background:var(--ink-slate);color:var(--ice)}
.panel--plain{box-shadow:none}
.display{
  font-family:var(--font-display);
  font-weight:300;
  font-size:clamp(40px,7vw,104px);
  line-height:.95;
  letter-spacing:-.01em;
}
.section-title{
  font-size:clamp(20px,2.4vw,28px);
  font-weight:600;
  line-height:1.32;
  padding-left:14px;
  border-left:2px solid var(--orange);
}
.eyebrow{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--slate);
}
.panel--dark .eyebrow,.panel--slate .eyebrow{color:var(--fog)}
.lede{
  font-size:17px;
  line-height:1.8;
  color:var(--slate);
  max-width:62ch;
}
.panel--dark .lede,.panel--slate .lede{color:rgba(245,248,250,.82)}

/* ---------- 9. Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 22px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  background:var(--ice);
  color:var(--ink-deep);
  border:2px solid var(--char);
  box-shadow:var(--shadow-soft);
  transition:transform var(--speed) ease,box-shadow var(--speed) ease,background var(--speed) ease,color var(--speed) ease,border-color var(--speed) ease;
}
.btn:hover,.btn:focus-visible{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--char)}
.btn:active{transform:translate(0,0);box-shadow:2px 2px 0 var(--char)}
.btn--primary{background:var(--orange);color:var(--char);border-color:var(--char)}
.btn--ghost{background:transparent;color:var(--ice);border-color:rgba(245,248,250,.55);box-shadow:none}
.btn--ghost:hover,.btn--ghost:focus-visible{border-color:var(--orange);color:var(--orange);box-shadow:none;transform:translateY(-2px)}
.btn--sm{padding:8px 14px;font-size:12.5px;box-shadow:3px 3px 0 var(--char)}

/* ---------- 10. Breadcrumb ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--slate);
}
.breadcrumb__link{
  color:var(--ink-deep);
  border-bottom:1px solid var(--orange);
  padding-bottom:1px;
  transition:color var(--speed) ease;
}
.breadcrumb__link:hover,.breadcrumb__link:focus-visible{color:var(--orange)}
.breadcrumb__sep{color:var(--fog)}
.breadcrumb [aria-current="page"]{color:var(--slate)}

/* ---------- 11. Tags / stat bars / tables / lists ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  padding:3px 9px;
  border:1px solid var(--fog);
  background:rgba(245,248,250,.7);
  color:var(--slate);
  white-space:nowrap;
}
.tag--live{background:var(--orange);border-color:var(--orange);color:var(--char);font-weight:600}
.tag--warn{background:rgba(228,87,76,.12);border-color:var(--coral);color:#A63C33}
.tag--cyan{background:rgba(43,217,196,.16);border-color:var(--cyan);color:var(--ink-slate)}

.stat-bar{
  position:relative;
  height:12px;
  background:var(--ice-line);
  border:1px solid var(--char);
  overflow:hidden;
}
.stat-bar__fill{
  display:block;
  height:100%;
  width:var(--value,0%);
  background:var(--cyan);
  border-right:1px solid var(--char);
  transition:width .5s ease;
}
.panel--dark .stat-bar,.panel--slate .stat-bar{background:rgba(143,166,181,.22);border-color:rgba(5,20,29,.55)}

.data-table{width:100%;font-size:14px;border:2px solid var(--char);background:var(--ice)}
.data-table th{
  background:var(--ink-slate);
  color:var(--ice);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.12em;
  text-align:left;
  padding:10px 12px;
  white-space:nowrap;
}
.data-table td{padding:10px 12px;border-top:1px solid var(--ice-line);vertical-align:top}
.data-table tbody tr{transition:background var(--speed) ease}
.data-table tbody tr:hover{background:#fff}
.data-table .num{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
  text-align:right;
  white-space:nowrap;
}

.index-list{border-top:2px solid var(--ink-deep)}
.index-list__row{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:baseline;
  gap:14px;
  padding:12px 4px;
  border-bottom:1px solid var(--ice-line);
  transition:background var(--speed) ease;
}
.index-list__row:hover{background:rgba(43,217,196,.1)}

/* ---------- 12. Rail & media frames ---------- */
.rail{
  display:flex;
  gap:14px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 4px 16px;
  scrollbar-color:var(--fog) transparent;
  scrollbar-width:thin;
}
.rail > *{flex:0 0 auto;scroll-snap-align:start}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-track{background:var(--ice-line)}
.rail::-webkit-scrollbar-thumb{background:var(--fog)}

.media-frame{
  position:relative;
  overflow:hidden;
  border:2px solid var(--char);
  background:var(--ink-slate);
  aspect-ratio:16/9;
  box-shadow:var(--shadow-hard);
}
.media-frame > img,
.media-frame > picture > img,
.media-frame > svg{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}
.media-frame__tag{
  position:absolute;
  left:0;bottom:0;
  padding:6px 10px;
  background:var(--ink-deep);
  color:var(--ice);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  border-top:2px solid var(--char);
  border-right:2px solid var(--char);
}

/* ---------- 13. Reveal ---------- */
[data-reveal]{transition:opacity .5s ease,transform .5s ease}
[data-reveal].is-hidden{opacity:0;transform:translateY(12px)}
[data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 14. Responsive ---------- */
@media (max-width:900px){
  .site-header{position:sticky}
  .header-top{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:10px 12px;
    padding:12px var(--gutter);
  }
  .sync-cluster{order:1;flex:1 1 100%;font-size:10px;letter-spacing:.12em}
  .masthead{order:2;align-items:flex-start;text-align:left;padding-left:0}
  .masthead__name{font-size:25px;letter-spacing:.12em}
  .masthead__sub{font-size:9.5px;letter-spacing:.1em}
  .header-actions{order:3;flex:0 0 auto}
  .action-link{padding:6px 9px;font-size:10.5px}
  .action-link--accent{box-shadow:2px 2px 0 var(--char)}
  .nav-toggle{display:inline-flex}

  .site-nav{display:none;padding:6px var(--gutter) 14px}
  .site-nav[data-open="true"]{display:block}
  .site-nav__list{flex-direction:column;gap:0;justify-content:flex-start}
  .site-nav__item{width:100%;border-bottom:1px solid rgba(143,166,181,.18)}
  .site-nav__item:last-child{border-bottom:0}
  .site-nav__link{padding:13px 4px 13px 14px;font-size:13.5px}
  .site-nav__link::after{
    left:0;right:auto;top:50%;bottom:auto;
    width:3px;height:16px;
    transform:translateY(-50%) scaleY(0);
    transform-origin:center;
  }
  .site-nav__link:hover::after,
  .site-nav__link:focus-visible::after,
  .site-nav__link[aria-current="page"]::after{transform:translateY(-50%) scaleY(1)}

  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1;padding-right:0}
  .footer-brand__note{max-width:44ch}
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:620px){
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-lists{grid-template-columns:1fr 1fr;gap:18px}
  .footer-legal__inner{flex-direction:column;align-items:flex-start;gap:12px}
  .legal-copy{margin-right:0}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .panel{padding:20px 16px}
  .display{font-size:clamp(34px,10vw,56px)}
  .index-list__row{grid-template-columns:auto 1fr;gap:8px 12px}
}

/* ---------- 15. Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
  }
  [data-reveal].is-hidden{opacity:1;transform:none}
  .btn:hover,.btn:focus-visible{transform:none}
  .action-link:hover,.action-link:focus-visible{transform:none}
  .footer-link:hover,.footer-link:focus-visible{transform:none}
  .to-top:hover,.to-top:focus-visible{transform:none}
}