/* ==========================================================================
   米兰赛场 · 共享样式 /assets/site.css
   深墨展示区 × 暖纸阅读区 · 红黑军团色 + 电子蓝 + 荧光绿 + 琥珀金
   ========================================================================== */

/* --- 1. 变量 ------------------------------------------------------------- */
:root{
  --ink:#0B0D10;
  --ink-2:#161A20;
  --ink-3:#1F252E;
  --paper:#F2EDE4;
  --paper-2:#FAF7F0;
  --red:#C8102E;
  --red-bright:#E63946;
  --blue:#2D9CDB;
  --green:#4ADE80;
  --amber:#F2B705;
  --grey:#8A919E;

  --line-dark:rgba(242,237,228,.14);
  --line-light:rgba(11,13,16,.14);

  --shell:1180px;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:26px;

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

  --shadow-1:0 18px 40px -26px rgba(0,0,0,.6);
  --shadow-2:0 26px 60px -30px rgba(11,13,16,.65);
}

/* --- 2. Reset 与基础排版 -------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,blockquote,dl,dd,pre{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,picture,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.1;letter-spacing:-.01em}
h1{font-size:clamp(2.8rem,6vw,5.6rem);line-height:1.05;letter-spacing:-.02em}
h2{font-size:clamp(2rem,3.6vw,3.2rem)}
h3{font-size:clamp(1.25rem,2vw,1.6rem)}
h4{font-size:1.05rem;letter-spacing:0}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.06em}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:.72rem;
  line-height:1.4;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--grey);
}
.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;
}

/* --- 3. 焦点与可访问 ------------------------------------------------------ */
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:4px}
.site-masthead :focus-visible,
.site-footer :focus-visible{outline-color:var(--green)}

.skip-link{
  position:absolute;left:1rem;top:-120px;z-index:120;
  display:inline-block;padding:.7rem 1.1rem;
  background:var(--paper-2);color:var(--ink);
  font-weight:700;border-radius:0 0 10px 10px;
  transition:top .2s ease;
}
.skip-link:focus{top:0}

/* --- 4. 布局容器与栅格 ---------------------------------------------------- */
.shell{
  width:100%;max-width:var(--shell);margin:0 auto;
  padding-inline:clamp(1rem,4vw,2.5rem);
}
.section{padding-block:clamp(3rem,7vw,6rem)}
.section--tight{padding-block:clamp(1.75rem,4vw,3rem)}
.section--ink{background:var(--ink);color:var(--paper)}
.section--paper{background:var(--paper);color:var(--ink)}
.section--paper-2{background:var(--paper-2);color:var(--ink)}
.section--ink .eyebrow{color:rgba(242,237,228,.6)}

.grid{display:grid;gap:clamp(1rem,2.2vw,1.75rem)}
.grid--2{grid-template-columns:minmax(0,1fr)}
.grid--3{grid-template-columns:minmax(0,1fr)}
.grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
.split{display:grid;gap:clamp(1.5rem,4vw,3.5rem);grid-template-columns:minmax(0,1fr)}

.prose{max-width:720px;font-size:1rem;line-height:1.75}
.prose p{margin-bottom:1.1em}
.prose h2{margin:1.6em 0 .6em}
.prose h3{margin:1.4em 0 .5em}
.prose ul{list-style:disc;padding-left:1.2em;margin-bottom:1.1em}
.prose ol{list-style:decimal;padding-left:1.2em;margin-bottom:1.1em}
.prose li{margin-bottom:.4em}
.prose a{color:var(--red);border-bottom:1px solid rgba(200,16,46,.35)}
.prose a:hover{border-bottom-color:var(--red)}

/* --- 5. 按钮与标签 -------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.8rem 1.3rem;border-radius:999px;border:1px solid transparent;
  font-family:var(--font-body);font-size:.95rem;font-weight:700;line-height:1;
  cursor:pointer;text-align:center;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--red);color:#fff;border-color:var(--red)}
.btn--primary:hover{background:var(--red-bright);border-color:var(--red-bright)}
.btn--ghost{background:transparent;color:var(--paper);border-color:rgba(242,237,228,.34)}
.btn--ghost:hover{border-color:var(--paper);background:rgba(242,237,228,.1)}
.btn--paper{background:var(--paper-2);color:var(--ink);border-color:var(--paper-2)}
.btn--paper:hover{background:#fff}
.btn--sm{padding:.55rem .95rem;font-size:.82rem}
.btn--block{width:100%}

.tag{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.3rem .65rem;border-radius:999px;
  font-family:var(--font-mono);font-size:.68rem;line-height:1.4;
  letter-spacing:.18em;text-transform:uppercase;
  color:var(--amber);border:1px solid rgba(242,183,5,.5);
  background:rgba(242,183,5,.08);
}
.tag--blue{color:var(--blue);border-color:rgba(45,156,219,.5);background:rgba(45,156,219,.1)}
.tag--green{color:var(--green);border-color:rgba(74,222,128,.5);background:rgba(74,222,128,.1)}
.tag--red{color:var(--red-bright);border-color:rgba(230,57,70,.5);background:rgba(230,57,70,.1)}

.plate{
  background:var(--paper-2);color:var(--ink);
  border-left:3px solid var(--red);border-radius:var(--r-sm);
  padding:.7rem .9rem;box-shadow:var(--shadow-1);
}
.plate__meta{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--grey);margin:0;
}
.plate__title{margin:.2rem 0 0;font-weight:700;font-size:.95rem;line-height:1.5}

/* --- 6. 面包屑 ------------------------------------------------------------ */
.crumbs{
  display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;
  padding-block:1.1rem;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;
  color:var(--grey);
}
.crumbs a{color:var(--grey)}
.crumbs a:hover{color:var(--red)}
.crumbs__sep{color:rgba(138,145,158,.6)}

/* --- 7. 图片容器基础规则 -------------------------------------------------- */
.media{
  position:relative;overflow:hidden;
  aspect-ratio:4/3;
  border-radius:var(--r-lg);
  border:1px solid var(--line-dark);
  background:var(--ink-2);
  background-image:
    linear-gradient(135deg,rgba(200,16,46,.28),rgba(45,156,219,.22)),
    repeating-linear-gradient(115deg,rgba(242,237,228,.05) 0 2px,transparent 2px 14px);
}
.media picture,.media img,.media video{width:100%;height:100%}
.media img,.media video{object-fit:cover;object-position:center}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media--tilt{transform:rotate(-1.6deg)}
.media--tilt-r{transform:rotate(1.4deg)}
.media__caption{
  position:absolute;left:.85rem;right:.85rem;bottom:.85rem;
  padding:.5rem .75rem;border-radius:12px;border-left:2px solid var(--amber);
  background:rgba(11,13,16,.74);color:var(--paper);
  font-size:.8rem;line-height:1.55;
}

/* --- 8. 信息牌 ------------------------------------------------------------ */
.info-plate{
  display:grid;gap:.65rem;
  padding:1rem 1.1rem;border-radius:var(--r-md);
  background:var(--ink-2);border:1px solid var(--line-dark);
}
.info-plate__row{
  display:grid;grid-template-columns:4.2rem minmax(0,1fr);
  gap:.7rem;align-items:start;
}
.info-plate__key{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--grey);padding-top:.25rem;
}
.info-plate__val{font-size:.9rem;line-height:1.6;color:var(--paper);word-break:break-word}

/* --- 9. 标签页（分段切换） ------------------------------------------------ */
.tabs{--tab-ink:var(--ink);--tab-fg:var(--paper)}
.tabs--ink{--tab-ink:var(--red);--tab-fg:#fff}
.tabs__list{
  display:flex;flex-wrap:wrap;gap:.4rem;
  padding-bottom:.6rem;border-bottom:1px solid var(--line-light);
}
.section--ink .tabs__list{border-bottom-color:var(--line-dark)}
.tabs__tab{
  padding:.5rem .95rem;border-radius:999px;border:1px solid transparent;
  background:transparent;color:inherit;cursor:pointer;
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.14em;
  text-transform:uppercase;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.tabs__tab:hover{border-color:currentColor}
.tabs__tab[aria-selected="true"]{background:var(--tab-ink);color:var(--tab-fg);border-color:var(--tab-ink)}
.tabs__panel{margin-top:1.3rem}
.tabs__panel[hidden]{display:none}

/* --- 10. 滚动进度条 / 返回顶部 ------------------------------------------- */
.scroll-meter{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:95;
  pointer-events:none;background:transparent;
}
.scroll-meter__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--red),var(--amber),var(--green));
  transition:width .1s linear;
}
.to-top{
  position:fixed;right:1rem;bottom:1rem;z-index:70;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--ink);color:var(--paper);
  border:1px solid var(--line-dark);cursor:pointer;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.06em;
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .24s ease,transform .24s ease;
}
.to-top[data-visible="true"]{opacity:1;pointer-events:auto;transform:none}

/* --- 11. 滚动显现 --------------------------------------------------------- */
.has-js [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .42s ease,transform .42s ease;
}
.has-js [data-reveal].is-in{opacity:1;transform:none}

/* ==========================================================================
   12. 刊头 Header
   ========================================================================== */
.site-masthead{
  position:sticky;top:0;z-index:80;
  background:var(--ink);color:var(--paper);
  border-bottom:1px solid rgba(200,16,46,.55);
  box-shadow:0 12px 30px -26px rgba(0,0,0,.9);
}

.masthead__bar{background:var(--ink-2);border-bottom:1px solid var(--line-dark)}
.masthead__bar-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:1rem;flex-wrap:wrap;min-height:42px;padding-block:.35rem;
}
.masthead__note{
  font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--grey);margin:0;
}
.masthead__cta{white-space:nowrap}

.masthead__head{
  position:relative;
  display:flex;align-items:center;justify-content:flex-start;
  gap:1rem;padding-block:.85rem;
}

.brand{display:inline-flex;align-items:center;gap:.75rem;color:inherit}
.brand__mark{
  position:relative;flex:none;
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--red) 0 50%,var(--ink-2) 50% 100%);
  box-shadow:inset 0 0 0 1px rgba(242,237,228,.2);
  overflow:hidden;
}
.brand__mark::after{
  content:"";position:absolute;right:5px;bottom:5px;
  width:6px;height:6px;border-radius:50%;
  background:var(--green);
  box-shadow:0 0 0 3px rgba(74,222,128,.18);
}
.brand__text{display:flex;flex-direction:column;line-height:1.1;text-align:left}
.brand__name{
  font-family:var(--font-display);font-weight:900;
  font-size:1.45rem;letter-spacing:.04em;
}
.brand__sub{font-size:.62rem;letter-spacing:.2em;color:var(--grey)}
.brand--footer .brand__name{font-size:1.3rem}

.nav-toggle{
  position:absolute;right:0;top:50%;transform:translateY(-50%);
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.55rem .7rem;border-radius:12px;
  background:transparent;color:var(--paper);
  border:1px solid var(--line-dark);cursor:pointer;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;
}
.nav-toggle:hover{border-color:rgba(242,237,228,.4)}
.nav-toggle__bars{
  position:relative;display:block;width:18px;height:2px;
  background:currentColor;border-radius:2px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;
  background:currentColor;border-radius:2px;
  transition:transform .22s ease;
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}
.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)}

.site-nav{display:none;background:transparent;border-top:1px solid var(--line-dark)}
.site-nav[data-open]{display:block;animation:navDrop .24s ease both}
.site-nav__list{
  display:flex;flex-direction:column;gap:.2rem;
  padding:.7rem 0 1rem;
}
.site-nav__link{
  display:flex;align-items:center;gap:.55rem;
  padding:.7rem .9rem;border-radius:12px;
  font-size:.95rem;font-weight:500;
  color:var(--paper);
  background:rgba(242,237,228,.045);
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.site-nav__link:hover{background:rgba(242,237,228,.12);border-color:var(--line-dark)}
.site-nav__num{font-size:.62rem;letter-spacing:.08em;color:var(--amber)}
.site-nav__link[aria-current="page"]{
  background:var(--red);border-color:var(--red-bright);color:#fff;
}
.site-nav__link[aria-current="page"] .site-nav__num{color:rgba(255,255,255,.78)}

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

/* ==========================================================================
   13. 页脚 Footer
   ========================================================================== */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--paper);
  padding-top:6px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:6px;
  background:linear-gradient(90deg,
    var(--red) 0 32%,
    var(--amber) 32% 39%,
    var(--blue) 39% 60%,
    var(--green) 60% 65%,
    var(--ink-3) 65% 100%);
}
.site-footer::after{
  content:"";position:absolute;right:-140px;top:-90px;
  width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(45,156,219,.16),transparent 68%);
  pointer-events:none;
}

.footer__strip{background:var(--ink-2);border-bottom:1px solid var(--line-dark)}
.footer__strip-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:1rem;flex-wrap:wrap;padding-block:.6rem;
}
.footer__legal{font-size:.74rem;letter-spacing:.1em;color:var(--paper)}
.footer__top-btn{
  padding:.45rem .85rem;border-radius:999px;
  background:transparent;color:var(--paper);
  border:1px solid var(--line-dark);cursor:pointer;
  font-size:.78rem;font-weight:500;
  transition:border-color .2s ease,background .2s ease;
}
.footer__top-btn:hover{border-color:var(--green);background:rgba(74,222,128,.1)}

.footer__grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1fr);
  gap:clamp(1.75rem,3.5vw,2.6rem);
  padding-block:clamp(2rem,5vw,3.2rem) clamp(1.5rem,3vw,2.4rem);
}
.footer__col{min-width:0}
.footer__heading{
  font-family:var(--font-mono);font-size:.7rem;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;
  color:var(--amber);margin-bottom:.9rem;
}
.footer__list{display:grid;gap:.5rem}
.footer__link{
  display:inline-block;font-size:.94rem;
  color:rgba(242,237,228,.82);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer__link:hover{color:#fff;border-bottom-color:var(--red-bright)}
.footer__note{
  margin:1rem 0 0;max-width:36ch;
  font-size:.88rem;line-height:1.7;color:var(--grey);
}
.footer__note--sm{margin-top:.8rem;font-size:.8rem}
.footer__meta{
  margin-top:1.1rem;font-size:.7rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--grey);
}
.footer__bottom{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:.6rem;
  padding-block:1.1rem 1.6rem;
  border-top:1px solid var(--line-dark);
}
.footer__tag{
  font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--grey);margin:0;
}

/* ==========================================================================
   14. 响应式
   ========================================================================== */
@media (min-width:640px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (min-width:900px){
  .masthead__head{justify-content:center;padding-block:1.05rem}
  .nav-toggle{display:none}

  .site-nav,
  .site-nav[data-open]{display:block;border-top:1px solid var(--line-dark);animation:none}
  .site-nav__list{
    flex-direction:row;flex-wrap:wrap;justify-content:center;
    gap:.3rem;padding:.55rem 0;
  }
  .site-nav__link{
    padding:.55rem .9rem;border-radius:999px;
    background:transparent;border-color:transparent;
  }
  .site-nav__link:hover{background:rgba(242,237,228,.1);border-color:var(--line-dark)}

  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .split{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
  .split--flip{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
}

@media (min-width:1000px){
  .footer__grid{grid-template-columns:1.5fr 1fr 1fr 1.4fr}
}

/* ==========================================================================
   15. 减少动态偏好
   ========================================================================== */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html{scroll-behavior:auto}
  .has-js [data-reveal]{opacity:1 !important;transform:none !important}
  .scroll-meter__bar{transition:none}
  .media--tilt,.media--tilt-r{transform:none}
}