/* =========================================================
   星力电玩牌局 — 共享样式表 /assets/site.css
   夜间街机霓虹 × 棋盘沉稳：深墨绿刊底 / 霓虹青导视 / 品红索引 / 琥珀金价格
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:96px;
}

body,
h1,h2,h3,h4,h5,
p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0}

ul,ol{padding:0;list-style:none}

img,svg,video,picture{display:block;max-width:100%;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%}

[hidden]{display:none !important}

/* ---------- 2. Tokens ---------- */
:root{
  --ink:#02100E;
  --ink-deep:#06231F;
  --ink-band:#0B3A32;
  --ink-row:#102E28;

  --cyan:#39F2D0;
  --mist:#A8FFF0;
  --magenta:#FF3D8B;
  --amber:#FFB13B;
  --paper:#F6F1E7;
  --sage:#9AB7AE;

  --line:rgba(168,255,240,.18);
  --line-strong:rgba(57,242,208,.34);
  --line-soft:rgba(168,255,240,.1);

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

  --shell:1240px;
  --gutter:clamp(16px,4.2vw,52px);

  --radius-organic:28px 8px 28px 8px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 3. Base ---------- */
body{
  background:var(--ink-deep);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:clamp(.98rem,.42vw + .88rem,1.06rem);
  line-height:1.72;
  letter-spacing:.012em;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.12;
  letter-spacing:-.015em;
  color:var(--paper);
  text-wrap:balance;
}

h1{font-size:clamp(2.6rem,7vw,5.6rem);letter-spacing:-.03em}
h2{font-size:clamp(1.7rem,3.4vw,2.6rem)}
h3{font-size:clamp(1.14rem,1.9vw,1.5rem)}
h4{font-size:1.02rem;letter-spacing:0}

p{text-wrap:pretty}

::selection{background:var(--cyan);color:#04201C}

:where(a,button,[tabindex]):focus-visible{
  outline:3px solid var(--amber);
  outline-offset:3px;
  border-radius:8px;
}

/* ---------- 4. Layout helpers ---------- */
.wrap{
  width:min(var(--shell),calc(100% - var(--gutter) * 2));
  margin-inline:auto;
}

.wrap--narrow{
  width:min(760px,calc(100% - var(--gutter) * 2));
  margin-inline:auto;
}

.section{padding-block:clamp(40px,6vw,84px)}

.prose{
  max-width:68ch;
  font-size:clamp(1rem,.3vw + .94rem,1.06rem);
  line-height:1.78;
  color:var(--paper);
}
.prose > * + *{margin-top:1.05em}
.prose h2{margin-top:1.8em;font-size:clamp(1.5rem,2.6vw,2rem)}
.prose h3{margin-top:1.5em}
.prose ul,.prose ol{padding-left:1.15em;list-style:revert}
.prose li + li{margin-top:.4em}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:.22em}

.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}

/* ---------- 5. Skip link ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:50%;
  z-index:200;
  transform:translate(-50%,-180%);
  padding:.68em 1.25em;
  border-radius:999px;
  background:var(--cyan);
  color:#04201C;
  font-weight:700;
  font-size:.92rem;
  letter-spacing:.02em;
  box-shadow:0 12px 30px -12px rgba(57,242,208,.9);
  transition:transform .22s var(--ease);
}
.skip-link:focus-visible{transform:translate(-50%,0)}

/* ---------- 6. Masthead ---------- */
.masthead{
  position:relative;
  isolation:isolate;
  background:
    radial-gradient(88% 118% at 50% -32%, rgba(57,242,208,.2), transparent 62%),
    radial-gradient(58% 88% at 90% -14%, rgba(255,61,139,.16), transparent 62%),
    linear-gradient(180deg,var(--ink-deep) 0%,var(--ink) 92%);
  border-bottom:1px solid var(--line-strong);
  padding-top:clamp(12px,2.2vw,24px);
  color:var(--paper);
}

.masthead__aura{
  position:absolute;
  inset:auto -8% -46% 46%;
  height:190px;
  z-index:-1;
  pointer-events:none;
  background:radial-gradient(ellipse at center,rgba(57,242,208,.24),transparent 70%);
  filter:blur(20px);
}

.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:3px;
  z-index:120;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--cyan) 48%,var(--magenta) 76%,var(--amber) 100%);
  box-shadow:0 0 14px rgba(57,242,208,.6);
  pointer-events:none;
}

.masthead__inner{
  width:min(var(--shell),calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  padding-bottom:clamp(4px,.9vw,10px);
}

.masthead__top{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:16px;
  padding-block:clamp(6px,1.2vw,14px);
}

.masthead__issue{
  display:flex;
  flex-direction:column;
  gap:3px;
  font-size:.72rem;
  letter-spacing:.14em;
  color:var(--sage);
}

.masthead__issue-kicker{
  color:var(--mist);
  font-weight:600;
  letter-spacing:.18em;
}

.masthead__issue-meta{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.08em;
  color:rgba(154,183,174,.92);
}

.masthead__brand{display:flex;justify-content:center;min-width:0}

.brand{
  display:inline-flex;
  align-items:center;
  gap:clamp(10px,1.4vw,18px);
  padding:.18em .4em;
  border-radius:10px;
}

.brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.5rem,3.3vw,2.55rem);
  letter-spacing:.05em;
  color:var(--paper);
  text-shadow:0 0 24px rgba(57,242,208,.34);
}

.brand__rule{
  flex:none;
  width:clamp(26px,4vw,52px);
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));
}

.brand__sub{
  font-size:clamp(.68rem,1.05vw,.8rem);
  letter-spacing:.26em;
  color:var(--mist);
  white-space:nowrap;
}

.masthead__actions{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:10px;
}

.masthead__cta{white-space:nowrap}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:.6em .95em;
  border-radius:999px;
  border:1px solid var(--line-strong);
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:.76rem;
  letter-spacing:.14em;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{color:var(--paper);border-color:var(--cyan);background:rgba(57,242,208,.1)}

.nav-toggle__bars{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:background .2s var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .22s var(--ease);
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}

.nav-toggle[aria-expanded="true"]{color:var(--cyan);border-color:var(--cyan)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg)}

/* 导航条 */
.masthead__nav{
  display:flex;
  justify-content:center;
  margin-top:clamp(4px,.8vw,10px);
  padding-block:clamp(8px,1.2vw,13px);
  border-top:1px solid var(--line-soft);
}

.nav-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:clamp(10px,2vw,34px);
}

.nav-list__item{display:flex;min-width:0}

.nav-link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:.55em;
  padding:.45em .15em;
  color:var(--mist);
  font-size:clamp(.94rem,1.05vw,1.04rem);
  letter-spacing:.03em;
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:.06em;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--paper)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.nav-link__idx{
  font-family:var(--font-mono);
  font-size:.6em;
  letter-spacing:.1em;
  color:var(--magenta);
  transform:translateY(-.18em);
}

/* ---------- 7. Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.72em 1.4em;
  border-radius:999px;
  border:1px solid transparent;
  font-family:var(--font-display);
  font-weight:700;
  font-size:.94rem;
  letter-spacing:.03em;
  transition:transform .18s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}

.btn--primary{
  background:var(--cyan);
  color:#04201C;
  box-shadow:0 0 0 1px rgba(57,242,208,.45),0 12px 28px -14px rgba(57,242,208,.95);
}
.btn--primary:hover{box-shadow:0 0 0 1px rgba(57,242,208,.65),0 18px 34px -16px rgba(57,242,208,1)}

.btn--ghost{
  border-color:var(--line-strong);
  color:var(--mist);
  background:rgba(57,242,208,.04);
}
.btn--ghost:hover{border-color:var(--cyan);color:var(--paper);background:rgba(57,242,208,.12)}

.btn--amber{
  background:var(--amber);
  color:#20140A;
  box-shadow:0 12px 28px -16px rgba(255,177,59,.95);
}

/* ---------- 8. Editorial bits ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.62em;
  font-family:var(--font-mono);
  font-size:.73rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--magenta);
}
.eyebrow::before{
  content:"";
  display:block;
  width:22px;
  height:2px;
  border-radius:2px;
  background:currentColor;
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.4em;
  padding:.26em .78em;
  border-radius:999px;
  border:1px solid var(--line-strong);
  font-family:var(--font-mono);
  font-size:.73rem;
  letter-spacing:.1em;
  color:var(--mist);
  white-space:nowrap;
}
.tag--magenta{border-color:rgba(255,61,139,.5);color:var(--magenta)}
.tag--amber{border-color:rgba(255,177,59,.5);color:var(--amber)}

.note{
  border-left:3px solid var(--amber);
  padding:.15em 0 .15em 1.1em;
  color:var(--mist);
  font-size:.94rem;
  line-height:1.72;
}

.breadcrumbs{
  margin-block:clamp(16px,2.6vw,28px);
  font-family:var(--font-mono);
  font-size:.76rem;
  letter-spacing:.06em;
  color:var(--sage);
}
.breadcrumbs ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5em;
}
.breadcrumbs a{color:var(--mist)}
.breadcrumbs a:hover{color:var(--cyan)}
.breadcrumbs li + li::before{
  content:"/";
  margin-right:.5em;
  color:rgba(168,255,240,.4);
}

/* ---------- 9. Tabs ---------- */
.tabs{width:100%}

.tabs__list{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
}

.tabs__tab{
  padding:.5em 1.05em;
  border-radius:999px;
  border:1px solid transparent;
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.1em;
  color:var(--sage);
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.tabs__tab:hover{color:var(--paper);border-color:var(--line-strong)}
.tabs__tab[aria-selected="true"]{
  background:var(--cyan);
  border-color:var(--cyan);
  color:#04201C;
  font-weight:700;
}

.tabs__panel{padding-top:clamp(16px,2.4vw,26px)}
.tabs__panel:not([hidden]){animation:tabs-in .3s var(--ease) both}

@keyframes tabs-in{
  from{opacity:0;transform:translateY(8px)}
  to{opacity:1;transform:none}
}

/* ---------- 10. Figure / media base ---------- */
.figure{
  position:relative;
  margin:0;
  overflow:hidden;
  border-radius:var(--radius-organic);
  background:linear-gradient(155deg,rgba(11,58,50,.96),rgba(2,16,14,.98));
  box-shadow:inset 0 0 0 1px var(--line),0 26px 60px -38px rgba(0,0,0,.95);
}
.figure img,
.figure picture img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.figure::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  border-radius:inherit;
  box-shadow:inset 0 0 0 1px rgba(57,242,208,.22);
}
.figure--slash{
  clip-path:polygon(0 0,100% 0,100% calc(100% - 30px),calc(100% - 30px) 100%,0 100%);
  border-radius:0;
}
.figure__caption{
  display:block;
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:.76rem;
  line-height:1.62;
  letter-spacing:.03em;
  color:var(--sage);
}

.ratio-1{aspect-ratio:1 / 1}
.ratio-4-3{aspect-ratio:4 / 3}
.ratio-3-4{aspect-ratio:3 / 4}
.ratio-16-9{aspect-ratio:16 / 9}
.ratio-21-9{aspect-ratio:21 / 9}

/* ---------- 11. Reveal ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
[data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 12. Footer ---------- */
.site-footer{
  margin-top:clamp(48px,7vw,96px);
  padding-top:clamp(38px,5.6vw,72px);
  background:
    radial-gradient(70% 110% at 10% 0%,rgba(57,242,208,.1),transparent 62%),
    radial-gradient(50% 90% at 92% 6%,rgba(255,61,139,.08),transparent 60%),
    var(--ink);
  border-top:1px solid var(--line-strong);
  color:var(--sage);
}

.site-footer__inner{
  width:min(var(--shell),calc(100% - var(--gutter) * 2));
  margin-inline:auto;
}

.footer-grid{
  display:grid;
  grid-template-columns:1.65fr 1fr 1fr 1.35fr;
  gap:clamp(24px,3.4vw,54px);
  align-items:start;
}

.footer-brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.35rem,2.3vw,1.85rem);
  letter-spacing:.05em;
  color:var(--paper);
}
.footer-brand__name::after{
  content:"";
  display:block;
  width:46px;
  height:3px;
  margin-top:10px;
  border-radius:3px;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));
}
.footer-brand__note{
  margin-top:14px;
  max-width:34ch;
  font-size:.9rem;
  line-height:1.76;
  color:var(--sage);
}
.footer-brand__meta{
  margin-top:14px;
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.1em;
  color:var(--mist);
}

.footer-col__title{
  padding-bottom:10px;
  margin-bottom:14px;
  border-bottom:1px dashed rgba(168,255,240,.22);
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--cyan);
}

.footer-links{
  display:grid;
  gap:9px;
  font-size:.93rem;
}
.footer-links a{
  display:inline-block;
  color:var(--sage);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-links a:hover{color:var(--paper);transform:translateX(3px)}

.footer-contact__line{
  display:flex;
  align-items:baseline;
  gap:.7em;
  margin-bottom:9px;
  font-size:.88rem;
  line-height:1.6;
  color:var(--sage);
}
.footer-contact__label{
  flex:none;
  min-width:2.6em;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.14em;
  color:var(--magenta);
}
.footer-contact__value{
  min-width:0;
  overflow-wrap:anywhere;
  color:var(--mist);
}
.footer-contact__note{
  margin-top:12px;
  font-size:.78rem;
  line-height:1.66;
  color:rgba(154,183,174,.86);
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 26px;
  margin-top:clamp(28px,4vw,52px);
  padding-block:20px;
  border-top:1px solid var(--line);
  font-size:.79rem;
  color:rgba(154,183,174,.92);
}
.footer-legal__copy{letter-spacing:.03em}
.footer-legal__links{
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
}
.footer-legal__links a{color:var(--sage);transition:color .18s var(--ease)}
.footer-legal__links a:hover{color:var(--cyan)}
.footer-legal__icp{
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.04em;
  color:var(--sage);
}

@keyframes nav-drop{
  from{opacity:0;transform:translateY(-8px)}
  to{opacity:1;transform:none}
}

/* ---------- 13. Responsive ---------- */
@media (max-width:1080px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:clamp(22px,3vw,40px)}
  .footer-contact{grid-column:1 / -1}
  .footer-contact__line{display:inline-flex;margin-right:22px}
}

@media (max-width:880px){
  .masthead__top{
    grid-template-columns:minmax(0,1fr) auto;
    gap:12px;
  }
  .masthead__issue{display:none}
  .masthead__brand{justify-content:flex-start}
  .nav-toggle{display:inline-flex}

  .masthead__nav{
    display:none;
    position:absolute;
    left:0;
    right:0;
    top:100%;
    z-index:60;
    margin-top:0;
    padding:8px var(--gutter) 22px;
    background:linear-gradient(180deg,#04201C 0%,var(--ink) 100%);
    border-top:1px solid var(--line-strong);
    border-bottom:1px solid var(--line-strong);
    box-shadow:0 34px 64px -24px rgba(0,0,0,.9);
    max-height:min(74vh,600px);
    overflow-y:auto;
  }
  .masthead__nav[data-open]{display:block;animation:nav-drop .24s var(--ease) both}

  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    width:100%;
  }
  .nav-list__item{border-bottom:1px dashed rgba(168,255,240,.16)}
  .nav-list__item:last-child{border-bottom:0}
  .nav-link{
    display:flex;
    justify-content:space-between;
    width:100%;
    padding:14px 2px;
    font-size:1.02rem;
  }
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{color:var(--cyan)}

  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
  .footer-contact{grid-column:1 / -1}
}

@media (max-width:560px){
  .brand{flex-direction:column;align-items:flex-start;gap:1px}
  .brand__rule{display:none}
  .brand__sub{letter-spacing:.18em}
  .masthead__cta{padding:.58em 1.05em;font-size:.83rem}
  .nav-toggle{padding:.55em .8em;font-size:.7rem}

  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-legal{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-contact__line{display:flex;margin-right:0}
}

/* ---------- 14. Accessibility preferences ---------- */
@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;
  }
  [data-reveal]{opacity:1 !important;transform:none !important}
  .scroll-progress{display:none !important}
  .btn:hover,.footer-links a:hover{transform:none}
}