/* =========================================================
   CMD赛场 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ========================================================= */

:root{
  /* 品牌色 */
  --ink:#071B16;
  --panel:#0E2A22;
  --paper:#E9F0EC;
  --mist:#A9B8B1;
  --lime:#C8FF3D;
  --red:#FF5A5A;
  --yellow:#FFD447;
  --aqua:#57E0C2;
  --line:#30443C;
  --white:#FFFFFF;

  /* 字体 */
  --font-display:"Barlow Condensed","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  /* 栅格与节奏 */
  --shell:1320px;
  --pad:clamp(1.1rem,4vw,2.5rem);
  --radius:18px;
  --edge:clamp(1rem,3vw,2rem);
}

/* ---------- reset ---------- */
*,
*::before,
*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:6rem;
}

body{
  margin:0;
  min-height:100%;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:clamp(1rem,0.95rem + 0.2vw,1.12rem);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

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

h1,h2,h3,h4,h5,h6{
  margin:0 0 0.55em;
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.08;
  letter-spacing:0.01em;
  color:var(--paper);
  text-wrap:balance;
}

h1{font-size:clamp(2.4rem,6vw,4.6rem);}
h2{font-size:clamp(1.9rem,4vw,3rem);}
h3{font-size:clamp(1.3rem,2.2vw,1.72rem);}
h4{font-size:clamp(1.08rem,1.6vw,1.3rem);}

p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}

ul,ol{margin:0 0 1em;padding-left:1.2em;}
li{margin:0;}

a{
  color:var(--aqua);
  text-decoration-thickness:1px;
  text-underline-offset:3px;
  transition:color 0.22s ease;
}
a:hover{color:var(--lime);}

strong{font-weight:700;color:var(--white);}
small{font-size:0.82em;color:var(--mist);}

::selection{background:var(--lime);color:#08201A;}

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

/* ---------- 跳过链接 ---------- */
.skip-link{
  position:fixed;
  top:0.6rem;
  left:0.6rem;
  z-index:200;
  padding:0.7rem 1.15rem;
  border-radius:999px;
  background:var(--lime);
  color:#08201A;
  font-family:var(--font-mono);
  font-size:0.75rem;
  letter-spacing:0.12em;
  text-decoration:none;
  transform:translateY(-180%);
  transition:transform 0.25s ease;
}
.skip-link:focus,
.skip-link:focus-visible{
  transform:translateY(0);
  color:#08201A;
}

#main-content:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:-2px;
}

/* =========================================================
   头部
   ========================================================= */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:90;
  color:var(--paper);
  background:linear-gradient(180deg,
    rgba(7,27,22,0.92) 0%,
    rgba(7,27,22,0.58) 58%,
    rgba(7,27,22,0) 100%);
  border-bottom:1px solid transparent;
  transition:background 0.4s ease,border-color 0.4s ease,box-shadow 0.4s ease;
}
.site-header[data-scrolled="true"]{
  background:rgba(10,32,26,0.97);
  border-bottom-color:var(--line);
  box-shadow:0 26px 48px -34px #000;
}

.header-strip,
.header-main{
  width:min(calc(100% - var(--pad) * 2),var(--shell));
  margin-inline:auto;
}

/* 状态带 */
.header-strip{
  display:flex;
  align-items:center;
  gap:0.9rem;
  padding-block:0.5rem;
  border-bottom:1px solid rgba(48,68,60,0.55);
  font-family:var(--font-mono);
  font-size:0.68rem;
  letter-spacing:0.14em;
  color:var(--mist);
}
.header-strip__label{
  display:inline-flex;
  align-items:center;
  gap:0.45rem;
  margin:0;
  color:var(--lime);
  text-transform:uppercase;
  white-space:nowrap;
}
.header-strip__label::before{
  content:"";
  width:0.5rem;
  height:0.5rem;
  border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 3px rgba(200,255,61,0.18);
  animation:cmd-pulse 2.6s ease-in-out infinite;
}
@keyframes cmd-pulse{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:0.4;transform:scale(0.68);}
}
.header-strip__text{
  flex:1 1 auto;
  min-width:0;
  margin:0;
  color:var(--paper);
  letter-spacing:0.1em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.header-strip__meta{
  margin:0;
  white-space:nowrap;
  display:none;
}
@media (min-width:900px){
  .header-strip__meta{display:block;}
}

/* 主行 */
.header-main{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:0.9rem clamp(1rem,2.5vw,2.5rem);
  padding-block:0.85rem 1rem;
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:0.7rem;
  justify-self:start;
  color:var(--paper);
  text-decoration:none;
}
.brand:hover{color:var(--paper);}
.brand__mark{
  display:grid;
  row-gap:3px;
  place-content:center;
  width:2.4rem;
  height:2.4rem;
  flex:0 0 auto;
  border-radius:12px 4px 12px 4px;
  background:var(--lime);
  box-shadow:0 0 0 1px rgba(200,255,61,0.35),0 12px 26px -16px rgba(200,255,61,0.9);
  transition:transform 0.35s ease;
}
.brand:hover .brand__mark{transform:rotate(-6deg) scale(1.05);}
.brand__mark i{
  display:block;
  height:3px;
  border-radius:2px;
  background:#08201A;
}
.brand__mark i:nth-child(1){width:15px;}
.brand__mark i:nth-child(2){width:10px;margin-left:auto;background:var(--red);}
.brand__mark i:nth-child(3){width:13px;margin-left:auto;}
.brand__text{
  display:flex;
  flex-direction:column;
  gap:0.28rem;
  min-width:0;
}
.brand__name{
  font-family:var(--font-display);
  font-weight:800;
  font-size:1.25rem;
  line-height:1;
  letter-spacing:0.05em;
}
.brand__line{
  font-family:var(--font-mono);
  font-size:0.6rem;
  line-height:1;
  letter-spacing:0.12em;
  color:var(--mist);
  white-space:nowrap;
}

/* 导航（桌面） */
.site-nav{
  justify-self:center;
  min-width:0;
}
.site-nav__label{display:none;}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:clamp(0.25rem,1.4vw,1.35rem);
  margin:0;
  padding:0;
  list-style:none;
}
.site-nav__item{flex:0 0 auto;}
.site-nav__link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:0.35rem;
  padding:0.45rem 0.15rem;
  color:var(--paper);
  text-decoration:none;
  font-family:var(--font-display);
  font-size:clamp(0.86rem,0.74rem + 0.34vw,0.98rem);
  font-weight:600;
  letter-spacing:0.04em;
  white-space:nowrap;
  transition:color 0.22s ease;
}
.site-nav__index{
  font-family:var(--font-mono);
  font-weight:500;
  font-size:0.58rem;
  letter-spacing:0.06em;
  color:var(--mist);
  transition:color 0.22s ease;
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0.1rem;
  height:2px;
  background:linear-gradient(90deg,var(--lime),var(--aqua));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 0.3s cubic-bezier(0.22,0.68,0,1);
}
.site-nav__link:hover,
.site-nav__link:focus-visible{color:var(--lime);}
.site-nav__link:hover .site-nav__index{color:var(--lime);}
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after{transform:scaleX(1);}
.site-nav__link[aria-current="page"]{
  color:var(--lime);
  font-weight:800;
}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--aqua);}

.site-nav__foot{display:none;}

/* 操作区 */
.header-actions{
  display:flex;
  align-items:center;
  gap:0.6rem;
  justify-self:end;
}
.header-cta{display:none;}
@media (min-width:921px){
  .header-cta{display:inline-flex;}
}

/* 移动菜单按钮 */
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:0.5rem;
  padding:0.62rem 0.9rem;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(14,42,34,0.65);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:0.68rem;
  letter-spacing:0.14em;
  cursor:pointer;
  transition:border-color 0.22s ease,color 0.22s ease,background 0.22s ease;
}
.nav-toggle:hover,
.nav-toggle:focus-visible{
  border-color:var(--lime);
  color:var(--lime);
}
.nav-toggle__bars{
  display:grid;
  gap:4px;
  width:16px;
}
.nav-toggle__bars i{
  display:block;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform 0.3s ease,opacity 0.25s ease;
}
.nav-toggle.is-open .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open .nav-toggle__bars i:nth-child(2){opacity:0;}
.nav-toggle.is-open .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.nav-toggle__text{
  font-size:0.68rem;
  letter-spacing:0.14em;
}
@media (max-width:480px){
  .nav-toggle__text{display:none;}
}
@media (min-width:921px){
  .nav-toggle{display:none;}
}

/* 滚动进度线 */
.scroll-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  display:block;
  width:0;
  height:2px;
  background:linear-gradient(90deg,var(--lime),var(--aqua));
  box-shadow:0 0 12px rgba(200,255,61,0.55);
  transition:width 0.12s linear;
  pointer-events:none;
}

/* 移动端底部抽屉 */
@media (max-width:920px){
  .site-nav{
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    z-index:95;
    display:flex;
    flex-direction:column;
    gap:0.9rem;
    max-height:84vh;
    overflow-y:auto;
    padding:1.15rem var(--pad) calc(1.5rem + env(safe-area-inset-bottom));
    background:linear-gradient(180deg,#0E2A22 0%,#0A211B 100%);
    border-top:2px solid var(--lime);
    border-radius:22px 22px 0 0;
    box-shadow:0 -40px 70px -32px rgba(0,0,0,0.9);
    transform:translateY(104%);
    visibility:hidden;
    transition:transform 0.4s cubic-bezier(0.22,0.68,0,1),visibility 0.4s ease;
  }
  .site-nav[data-open]{
    transform:translateY(0);
    visibility:visible;
  }
  .site-nav__label{
    display:block;
    margin:0;
    font-family:var(--font-mono);
    font-size:0.65rem;
    letter-spacing:0.24em;
    text-transform:uppercase;
    color:var(--lime);
  }
  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .site-nav__item + .site-nav__item{
    border-top:1px solid rgba(48,68,60,0.65);
  }
  .site-nav__link{
    display:flex;
    align-items:center;
    gap:0.8rem;
    padding:0.9rem 0.2rem;
    font-size:1.05rem;
    font-weight:600;
  }
  .site-nav__link::after{display:none;}
  .site-nav__index{
    width:1.8rem;
    font-size:0.7rem;
  }
  .site-nav__link[aria-current="page"]{
    padding-left:0.7rem;
    border-left:2px solid var(--lime);
  }
  .site-nav__foot{
    display:flex;
    flex-direction:column;
    gap:0.6rem;
    margin-top:0.3rem;
  }
}

body.nav-open{overflow:hidden;}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  position:relative;
  margin-top:clamp(3rem,8vw,6rem);
  padding:clamp(2.6rem,6vw,4.5rem) 0 clamp(1.4rem,3vw,2rem);
  background:
    radial-gradient(120% 100% at 8% 0%,#103328 0%,rgba(7,27,22,0) 62%),
    var(--ink);
  border-top:1px solid var(--line);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  right:0;
  width:min(52%,560px);
  height:5px;
  background:linear-gradient(90deg,var(--aqua),var(--lime));
  clip-path:polygon(0 0,100% 0,100% 100%,14% 100%);
}
.site-footer::after{
  content:"";
  position:absolute;
  left:-8%;
  bottom:-34%;
  width:clamp(180px,32vw,420px);
  aspect-ratio:1/1;
  border-radius:50%;
  background:radial-gradient(circle at 40% 40%,rgba(87,224,194,0.16),rgba(87,224,194,0) 66%);
  pointer-events:none;
}
.site-footer > .page-shell{
  position:relative;
  z-index:1;
}

.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,0.75fr));
  gap:clamp(1.8rem,4vw,3.2rem);
}

.footer-brand{
  display:grid;
  align-content:start;
  justify-items:start;
  gap:0.2rem;
}
.footer-brand__name{
  margin:0 0 0.7rem;
  font-family:var(--font-display);
  font-size:clamp(2.4rem,5.4vw,3.8rem);
  font-weight:800;
  line-height:0.95;
  letter-spacing:0.04em;
}
.footer-brand__name span{
  color:var(--lime);
  font-weight:300;
  letter-spacing:0.1em;
}
.footer-brand__summary{
  max-width:36ch;
  margin:0 0 1.3rem;
  color:var(--mist);
  font-size:0.95rem;
  line-height:1.8;
}

.footer-col{display:block;}
.footer-col__title{
  margin:0 0 0.95rem;
  font-family:var(--font-mono);
  font-weight:500;
  font-size:0.68rem;
  letter-spacing:0.22em;
  text-transform:uppercase;
  color:var(--lime);
}
.footer-col__list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:0.55rem;
}

.footer-link{
  display:inline-block;
  color:var(--mist);
  font-family:var(--font-body);
  font-size:0.95rem;
  text-decoration:none;
  transition:color 0.2s ease,transform 0.2s ease;
}
.footer-link:hover,
.footer-link:focus-visible{
  color:var(--lime);
  transform:translateX(3px);
}

.footer-contact{
  margin-top:clamp(2rem,4vw,3rem);
  padding-top:clamp(1.1rem,2.5vw,1.7rem);
  border-top:1px solid var(--line);
  display:grid;
  gap:0.4rem;
}
.footer-contact__label{
  margin:0;
  font-family:var(--font-mono);
  font-size:0.66rem;
  letter-spacing:0.24em;
  text-transform:uppercase;
  color:var(--aqua);
}
.footer-contact__line{
  margin:0;
  font-family:var(--font-mono);
  font-size:clamp(0.8rem,0.72rem + 0.4vw,0.95rem);
  letter-spacing:0.02em;
  color:var(--paper);
  word-break:break-word;
}
.footer-contact__address{
  margin:0;
  color:var(--mist);
  font-size:0.88rem;
}

.footer-bottom{
  margin-top:clamp(1.4rem,3vw,2rem);
  padding-top:1rem;
  border-top:1px solid rgba(48,68,60,0.7);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0.6rem 1.4rem;
  font-family:var(--font-mono);
  font-size:0.68rem;
  letter-spacing:0.1em;
  color:var(--mist);
}
.footer-copy{margin:0;}
.footer-legal{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:0.9rem;
  margin:0;
  padding:0;
}
.footer-legal .footer-link{
  font-family:var(--font-mono);
  font-size:0.68rem;
  letter-spacing:0.1em;
}
.footer-icp{
  margin:0 0 0 auto;
  color:var(--mist);
}

@media (max-width:980px){
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:620px){
  .footer-top{grid-template-columns:minmax(0,1fr);}
  .footer-icp{margin-left:0;}
}

/* =========================================================
   通用组件
   ========================================================= */
.page-shell{
  width:min(calc(100% - var(--pad) * 2),var(--shell));
  margin-inline:auto;
}
.page-top{
  padding-top:clamp(7.5rem,11vw,10rem);
}
.section{
  position:relative;
  padding-block:clamp(2.4rem,5.5vw,4.5rem);
}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:0.9rem 1.6rem;
  margin-bottom:clamp(1.4rem,3vw,2.4rem);
}

.stack{
  display:grid;
  gap:1rem;
}
.grid{
  display:grid;
  gap:clamp(1rem,2.4vw,1.75rem);
}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--split{grid-template-columns:minmax(0,280px) minmax(0,1fr);}

@media (max-width:1100px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:960px){
  .grid--2,
  .grid--3,
  .grid--split{grid-template-columns:minmax(0,1fr);}
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:0.6rem;
  margin:0 0 0.9rem;
  font-family:var(--font-mono);
  font-size:0.7rem;
  letter-spacing:0.22em;
  text-transform:uppercase;
  color:var(--lime);
}
.eyebrow::before{
  content:"";
  width:1.6rem;
  height:1px;
  background:currentColor;
}

.index-tag{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:0.72rem;
  letter-spacing:0.18em;
  color:var(--mist);
}

.lede{
  max-width:62ch;
  font-size:clamp(1.05rem,1.5vw,1.24rem);
  line-height:1.72;
  color:var(--mist);
}

.rule{
  height:1px;
  margin-block:clamp(1.4rem,4vw,2.4rem);
  border:0;
  background:linear-gradient(90deg,var(--line),rgba(48,68,60,0));
}

.data-num{
  font-family:var(--font-mono);
  font-weight:600;
  letter-spacing:-0.02em;
  color:var(--lime);
  font-variant-numeric:tabular-nums;
}

.meta-row{
  display:flex;
  flex-wrap:wrap;
  gap:0.45rem 1.1rem;
  margin:0;
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:0.7rem;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--mist);
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:0.55rem;
  padding:0.78rem 1.35rem;
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
  color:var(--paper);
  font-family:var(--font-display);
  font-size:0.9rem;
  font-weight:700;
  letter-spacing:0.06em;
  text-decoration:none;
  cursor:pointer;
  transition:background 0.25s ease,color 0.25s ease,border-color 0.25s ease,box-shadow 0.25s ease,transform 0.25s ease;
}
.btn:hover{color:var(--lime);border-color:var(--lime);}
.btn:active{transform:translateY(1px);}

.btn--lime{
  background:var(--lime);
  border-color:var(--lime);
  color:#08201A;
  box-shadow:0 14px 30px -18px rgba(200,255,61,0.9);
}
.btn--lime:hover,
.btn--lime:focus-visible{
  background:#DAFF7C;
  border-color:#DAFF7C;
  color:#08201A;
  box-shadow:0 0 0 4px rgba(200,255,61,0.18);
}
.btn--ghost{
  background:rgba(14,42,34,0.55);
}
.btn--block{
  display:flex;
  width:100%;
}

/* 面板与卡片 */
.panel{
  position:relative;
  padding:clamp(1.1rem,2.4vw,1.75rem);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(14,42,34,0.94),rgba(7,27,22,0.96));
  overflow:hidden;
}
.panel::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,var(--lime),rgba(200,255,61,0));
}

.card{
  position:relative;
  display:block;
  padding:clamp(1rem,2.2vw,1.5rem);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:rgba(14,42,34,0.62);
  color:var(--paper);
  text-decoration:none;
  transition:transform 0.3s ease,border-color 0.3s ease,background 0.3s ease;
}
.card:hover,
.card:focus-visible{
  transform:translateY(-3px);
  border-color:rgba(200,255,61,0.5);
  background:rgba(14,42,34,0.95);
  color:var(--paper);
}

/* 标签 */
.chip{
  display:inline-flex;
  align-items:center;
  gap:0.4rem;
  padding:0.32rem 0.72rem;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(7,27,22,0.55);
  font-family:var(--font-mono);
  font-size:0.66rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--mist);
  white-space:nowrap;
}
.chip--lime{color:var(--lime);border-color:rgba(200,255,61,0.5);background:rgba(200,255,61,0.08);}
.chip--red{color:var(--red);border-color:rgba(255,90,90,0.45);background:rgba(255,90,90,0.1);}
.chip--yellow{color:var(--yellow);border-color:rgba(255,212,71,0.45);background:rgba(255,212,71,0.1);}

/* 判罚牌小色块 */
.penalty{
  display:inline-block;
  width:0.62rem;
  height:0.88rem;
  border-radius:2px;
  background:var(--red);
  vertical-align:-1px;
}
.penalty--yellow{background:var(--yellow);}

/* 面包屑 */
.breadcrumb{
  font-family:var(--font-mono);
  font-size:0.72rem;
  letter-spacing:0.1em;
  margin-bottom:clamp(1rem,2.5vw,1.8rem);
}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  gap:0.4rem;
  margin:0;
  padding:0;
  list-style:none;
  color:var(--mist);
}
.breadcrumb li + li::before{
  content:"/";
  margin-right:0.4rem;
  color:var(--line);
}
.breadcrumb a{
  color:var(--mist);
  text-decoration:none;
}
.breadcrumb a:hover,
.breadcrumb a:focus-visible{color:var(--lime);}
.breadcrumb [aria-current="page"]{color:var(--lime);}

/* 图片容器基础规则（页面阶段投放图片占位） */
.media{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:var(--media-ratio,16 / 9);
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:
    radial-gradient(90% 120% at 18% 0%,rgba(87,224,194,0.16),rgba(87,224,194,0) 60%),
    linear-gradient(150deg,#0E2A22 0%,#071B16 72%);
}
.media img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
}
.media--wide{--media-ratio:21 / 9;}
.media--tall{--media-ratio:3 / 4;}
.media--square{--media-ratio:1 / 1;}
.media--cut{
  border-radius:0;
  clip-path:polygon(0 0,100% 0,100% 86%,88% 100%,0 100%);
}
.media__caption{
  display:block;
  margin-top:0.6rem;
  font-family:var(--font-mono);
  font-size:0.68rem;
  letter-spacing:0.12em;
  color:var(--mist);
}

/* 超大画册标题 */
.display-xl{
  margin:0 0 0.4em;
  font-family:var(--font-display);
  font-weight:300;
  font-size:clamp(2.8rem,9vw,7rem);
  line-height:0.94;
  letter-spacing:-0.01em;
  color:var(--paper);
}
.display-xl strong{font-weight:900;color:var(--lime);}

/* 滚动显现 */
.js-ready .reveal{
  opacity:0;
  transform:translateY(18px);
  transition:
    opacity 0.55s ease var(--reveal-delay,0ms),
    transform 0.55s cubic-bezier(0.22,0.68,0,1) var(--reveal-delay,0ms);
  will-change:opacity,transform;
}
.js-ready .reveal.is-visible{
  opacity:1;
  transform:none;
}

/* =========================================================
   动效降级
   ========================================================= */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,
  *::before,
  *::after{
    animation-duration:0.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.001ms !important;
    scroll-behavior:auto !important;
  }
  .js-ready .reveal{
    opacity:1 !important;
    transform:none !important;
  }
  .scroll-progress{transition:none;}
}