/* =========================================================
   永隆现金网 · 共享 Site Kit  /assets/site.css
   结构：变量 → 重置与排版 → 头部 → 页脚 → 通用组件 → 响应式
   ========================================================= */

:root{
  --yl-green:#0F3B2E;
  --yl-green-soft:#1C4D3E;
  --yl-green-dark:#0A2A21;
  --yl-green-deep:#07211A;
  --yl-gold:#E8A33D;
  --yl-gold-soft:#F3C97D;
  --yl-coral:#FF6B5A;
  --yl-cream:#FAF6EE;
  --yl-sand:#F1E7D8;
  --yl-ink:#17201C;
  --yl-sage:#6F7F76;
  --yl-wine:#7A2E3A;
  --yl-indigo:#244A5E;
  --yl-amber:#F6D9A8;

  --yl-line:rgba(23,32,28,.12);
  --yl-line-soft:rgba(250,246,238,.16);

  --yl-gutter:clamp(20px,5vw,72px);
  --yl-radius-lg:32px;
  --yl-radius-md:20px;
  --yl-radius-sm:12px;
  --yl-radius-pill:999px;

  --yl-header-h:84px;
  --yl-header-h-scrolled:68px;
  --yl-header-h-sm:64px;

  --yl-shadow-soft:0 22px 46px -34px rgba(15,59,46,.55);
  --yl-shadow-lift:0 26px 50px -30px rgba(15,59,46,.45);

  --yl-font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --yl-font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --yl-font-mono:"IBM Plex Mono","SFMono-Regular",Menlo,Consolas,"Noto Sans Mono CJK SC",monospace;

  --yl-ease:cubic-bezier(.22,.8,.28,1);
}

/* ---------- 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--yl-font-body);
  font-size:clamp(15.5px,1.02vw,17px);
  line-height:1.65;
  color:var(--yl-ink);
  background-color:var(--yl-cream);
  background-image:radial-gradient(120% 70% at 12% -10%,rgba(241,231,216,.95),rgba(250,246,238,0) 62%);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.nav-open{overflow:hidden}
img,svg{max-width:100%;display:block}
img{height:auto}
button{font:inherit;color:inherit;background:none;border:0;padding:0}
a{color:inherit}
p,figure,blockquote{margin:0}
ul,ol{margin:0}

h1,h2,h3,h4,h5,h6{letter-spacing:-.01em}
h1,h2{
  font-family:var(--yl-font-display);
  font-weight:900;
  line-height:1.12;
  letter-spacing:-.02em;
  color:var(--yl-ink);
}
h1{font-size:clamp(2.8rem,6vw,5.5rem)}
h2{font-size:clamp(2rem,3.6vw,3.4rem)}
h3{
  font-family:var(--yl-font-body);
  font-size:clamp(1.3rem,1.1vw + .95rem,1.6rem);
  font-weight:800;
  line-height:1.36;
  color:var(--yl-ink);
}
h4{font-size:1.05rem;font-weight:700}

:focus-visible{outline:3px solid var(--yl-gold);outline-offset:3px;border-radius:8px}

/* ---------- 容器与网格 ---------- */
.container{
  width:100%;
  max-width:1240px;
  margin-inline:auto;
  padding-inline:var(--yl-gutter);
}
.container--narrow{max-width:880px}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2vw,28px);
}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.col-start-2{grid-column-start:2}
.col-start-3{grid-column-start:3}

.page-offset{padding-top:clamp(104px,13vh,148px)}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;
  top:-80px;
  left:clamp(16px,4vw,40px);
  z-index:400;
  padding:.72em 1.25em;
  border-radius:0 0 14px 14px;
  background:var(--yl-amber);
  color:var(--yl-green);
  font:700 .9rem/1 var(--yl-font-body);
  text-decoration:none;
  transition:top .22s var(--yl-ease);
}
.skip-link:focus{top:0}

/* =========================================================
   头部
   ========================================================= */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:120;
  color:var(--yl-cream);
  border-bottom:1px solid rgba(250,246,238,.14);
  transition:border-color .35s var(--yl-ease),box-shadow .35s var(--yl-ease);
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:rgba(15,59,46,.44);
  -webkit-backdrop-filter:blur(14px) saturate(125%);
  backdrop-filter:blur(14px) saturate(125%);
  transition:background-color .38s var(--yl-ease);
}
.site-header[data-scrolled="true"]{
  border-bottom-color:rgba(232,163,61,.55);
  box-shadow:0 18px 38px -30px rgba(0,0,0,.85);
}
.site-header[data-scrolled="true"]::before{background:var(--yl-green)}

.header-inner{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,32px);
  max-width:1480px;
  min-height:var(--yl-header-h);
  transition:min-height .3s var(--yl-ease);
}
.site-header[data-scrolled="true"] .header-inner{min-height:var(--yl-header-h-scrolled)}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  text-decoration:none;
  color:var(--yl-cream);
}
.brand-mark{
  position:relative;
  display:block;
  width:34px;
  height:34px;
  border-radius:10px;
  background:linear-gradient(140deg,var(--yl-gold) 0%,var(--yl-coral) 62%,var(--yl-wine) 100%);
  box-shadow:inset 0 0 0 1px rgba(250,246,238,.36),0 10px 20px -14px rgba(0,0,0,.9);
  transform:rotate(-8deg);
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:9px;
  border:2px solid rgba(15,59,46,.85);
  border-radius:3px;
}
.brand-text{display:flex;flex-direction:column;gap:2px}
.brand-name{
  font-family:var(--yl-font-body);
  font-weight:900;
  font-size:1.02rem;
  letter-spacing:-.01em;
  line-height:1.1;
  white-space:nowrap;
}
.brand-sub{
  font-family:var(--yl-font-mono);
  font-size:.62rem;
  letter-spacing:.16em;
  line-height:1.2;
  color:rgba(246,217,168,.82);
  white-space:nowrap;
}

/* 主导航 */
.header-nav{flex:1 1 auto;display:flex;justify-content:center}
.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
  list-style:none;
  padding:0;
}
.nav-link{
  display:inline-block;
  padding:.52em .86em;
  border-radius:var(--yl-radius-pill);
  font-size:.93rem;
  font-weight:500;
  line-height:1.3;
  color:rgba(250,246,238,.86);
  text-decoration:none;
  transition:background-color .22s var(--yl-ease),color .22s var(--yl-ease);
}
.nav-link:hover{background:rgba(250,246,238,.13);color:var(--yl-cream)}
.nav-link[aria-current="page"]{
  background:var(--yl-amber);
  color:var(--yl-green);
  font-weight:800;
}
.nav-quick{display:none}

/* 头部操作区 */
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  flex:0 0 auto;
}
.version-chip{
  display:inline-flex;
  align-items:center;
  gap:.45em;
  padding:.48em .86em;
  border:1px solid rgba(232,163,61,.62);
  border-radius:var(--yl-radius-pill);
  background:rgba(232,163,61,.08);
  color:var(--yl-gold-soft);
  font:600 .7rem/1 var(--yl-font-mono);
  letter-spacing:.1em;
  white-space:nowrap;
  cursor:pointer;
  transition:background-color .22s var(--yl-ease),color .22s var(--yl-ease),border-color .22s var(--yl-ease);
}
.version-chip::before{
  content:"";
  width:6px;height:6px;
  border-radius:50%;
  background:var(--yl-gold);
  flex:0 0 auto;
}
.version-chip:hover{background:var(--yl-gold);color:var(--yl-green);border-color:var(--yl-gold)}
.version-chip:hover::before{background:var(--yl-green)}
.version-chip--drawer{display:none}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  margin-left:auto;
  border-radius:14px;
  border:1px solid rgba(232,163,61,.6);
  background:rgba(250,246,238,.07);
  color:var(--yl-cream);
  cursor:pointer;
  position:relative;
  z-index:140;
  transition:background-color .22s var(--yl-ease),border-color .22s var(--yl-ease);
}
.nav-toggle:hover{background:rgba(232,163,61,.22);border-color:var(--yl-gold)}
.nav-toggle__bars{position:relative;display:block;width:20px;height:14px}
.nav-toggle__bars span{
  position:absolute;
  left:0;
  width:100%;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:top .28s var(--yl-ease),transform .28s var(--yl-ease);
}
.nav-toggle__bars span:first-child{top:0}
.nav-toggle__bars span:last-child{top:12px}
.site-header[data-nav-open="true"] .nav-toggle__bars span:first-child{top:6px;transform:rotate(45deg)}
.site-header[data-nav-open="true"] .nav-toggle__bars span:last-child{top:6px;transform:rotate(-45deg)}

/* 阅读进度带 */
.scroll-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  width:100%;
  height:3px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--yl-gold),var(--yl-coral) 68%,var(--yl-amber));
  pointer-events:none;
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,120px);
  background:var(--yl-green-dark);
  color:var(--yl-cream);
}

/* 版本切换研究板 */
.footer-version{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  border-top:1px solid rgba(232,163,61,.45);
  background:
    radial-gradient(120% 140% at 6% -14%,rgba(232,163,61,.3),rgba(232,163,61,0) 58%),
    radial-gradient(110% 130% at 102% 0%,rgba(36,74,94,.92),rgba(36,74,94,0) 62%),
    linear-gradient(115deg,#12402F 0%,var(--yl-green) 56%,#0B2E24 100%);
}
.footer-version::after{
  content:"";
  position:absolute;
  right:-8%;
  bottom:-72%;
  width:min(560px,80%);
  height:320px;
  border-radius:50%;
  border:1px solid rgba(232,163,61,.3);
  box-shadow:0 0 0 46px rgba(232,163,61,.05),0 0 0 104px rgba(232,163,61,.035);
  pointer-events:none;
  z-index:0;
}
.footer-version__inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  align-items:center;
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(34px,5vw,64px);
}
.footer-version__eyebrow{
  font-family:var(--yl-font-mono);
  font-size:.68rem;
  font-weight:600;
  letter-spacing:.26em;
  color:var(--yl-gold-soft);
  margin-bottom:12px;
}
.footer-version__title{
  font-family:var(--yl-font-display);
  font-size:clamp(1.55rem,2.8vw,2.5rem);
  font-weight:900;
  line-height:1.2;
  letter-spacing:-.02em;
  color:var(--yl-cream);
  margin-bottom:12px;
}
.footer-version__note{
  max-width:34em;
  font-size:.9rem;
  line-height:1.7;
  color:rgba(250,246,238,.72);
}
.footer-version__action{display:flex;flex-direction:column;align-items:flex-start;gap:0}
.version-pill{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.95em 1.9em;
  border-radius:var(--yl-radius-pill);
  border:1px solid transparent;
  background:var(--yl-coral);
  color:#0F3B2E;
  font-family:var(--yl-font-body);
  font-size:.96rem;
  font-weight:800;
  line-height:1;
  letter-spacing:.01em;
  cursor:pointer;
  box-shadow:0 16px 30px -20px rgba(255,107,90,.95);
  transition:transform .24s var(--yl-ease),background-color .24s var(--yl-ease),color .24s var(--yl-ease),box-shadow .24s var(--yl-ease);
}
.version-pill:hover{transform:translateY(-2px);box-shadow:0 20px 34px -18px rgba(255,107,90,.85)}
.version-pill[aria-pressed="true"]{background:var(--yl-amber);color:#3A2A05;box-shadow:0 16px 30px -22px rgba(246,217,168,.9)}
.footer-version__status{
  display:flex;
  align-items:center;
  gap:.55em;
  margin-top:16px;
  font-family:var(--yl-font-mono);
  font-size:.74rem;
  font-weight:500;
  letter-spacing:.1em;
  color:rgba(250,246,238,.7);
}
.footer-version__status::before{
  content:"";
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--yl-gold);
  flex:0 0 auto;
}
.version-pill[aria-pressed="true"] + .footer-version__status::before{background:var(--yl-coral)}

/* 页脚主体 */
.footer-body{background:var(--yl-green-dark);border-top:1px solid rgba(250,246,238,.08)}
.footer-body__inner{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,.85fr) minmax(0,.85fr) minmax(0,1.35fr);
  gap:clamp(24px,3.4vw,48px);
  padding-block:clamp(36px,5vw,64px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.footer-brand__name{
  font-family:var(--yl-font-display);
  font-size:1.5rem;
  font-weight:900;
  letter-spacing:-.01em;
  color:var(--yl-cream);
}
.footer-brand__text{
  max-width:26em;
  font-size:.86rem;
  line-height:1.75;
  color:rgba(250,246,238,.66);
}
.footer-col__title{
  font-family:var(--yl-font-mono);
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--yl-gold);
  margin-bottom:16px;
}
.footer-list{list-style:none;padding:0}
.footer-list li + li{margin-top:10px}
.footer-list a{
  display:inline-block;
  font-size:.92rem;
  color:rgba(250,246,238,.8);
  text-decoration:none;
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:color .2s var(--yl-ease),border-color .2s var(--yl-ease);
}
.footer-list a:hover{color:var(--yl-amber);border-bottom-color:rgba(246,217,168,.55)}

/* 页脚联络 */
.footer-contact{display:flex;flex-direction:column;gap:16px}
.footer-contact__item{display:flex;flex-direction:column;align-items:flex-start}
.footer-contact__label{
  font-family:var(--yl-font-mono);
  font-size:.64rem;
  font-weight:600;
  letter-spacing:.18em;
  color:rgba(246,217,168,.78);
  margin-bottom:6px;
}
.footer-contact__value{
  display:block;
  font-size:.9rem;
  line-height:1.65;
  color:rgba(250,246,238,.88);
  word-break:break-word;
}
.footer-contact__value--mono{font-family:var(--yl-font-mono);letter-spacing:.02em}
.copy-btn{
  display:inline-flex;
  align-items:center;
  margin-top:9px;
  padding:.42em .88em;
  border-radius:var(--yl-radius-pill);
  border:1px solid rgba(246,217,168,.45);
  color:var(--yl-amber);
  font-family:var(--yl-font-mono);
  font-size:.68rem;
  font-weight:600;
  letter-spacing:.1em;
  cursor:pointer;
  transition:background-color .2s var(--yl-ease),color .2s var(--yl-ease),border-color .2s var(--yl-ease);
}
.copy-btn:hover{background:rgba(246,217,168,.16)}
.copy-btn[data-copied="true"]{background:var(--yl-amber);color:#3A2A05;border-color:var(--yl-amber)}
.footer-note{
  margin-top:18px;
  padding-top:14px;
  border-top:1px dashed rgba(250,246,238,.2);
  font-size:.76rem;
  line-height:1.75;
  color:rgba(250,246,238,.58);
}

/* 页脚底条 */
.footer-bottom{background:var(--yl-green-deep);border-top:1px solid rgba(250,246,238,.1)}
.footer-bottom__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 26px;
  padding-block:20px;
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 20px;
  font-size:.76rem;
  color:rgba(250,246,238,.62);
}
.footer-legal a{
  color:rgba(250,246,238,.82);
  text-decoration:none;
  transition:color .2s var(--yl-ease);
}
.footer-legal a:hover{color:var(--yl-amber);text-decoration:underline;text-underline-offset:3px}
.footer-meta{
  font-family:var(--yl-font-mono);
  font-size:.7rem;
  font-weight:500;
  letter-spacing:.1em;
  color:rgba(246,217,168,.72);
}

/* =========================================================
   通用按钮
   ========================================================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.78em 1.4em;
  border-radius:var(--yl-radius-pill);
  border:1px solid transparent;
  font-family:var(--yl-font-body);
  font-size:.92rem;
  font-weight:700;
  line-height:1.2;
  letter-spacing:.01em;
  text-decoration:none;
  cursor:pointer;
  transition:transform .22s var(--yl-ease),background-color .22s var(--yl-ease),color .22s var(--yl-ease),border-color .22s var(--yl-ease),box-shadow .22s var(--yl-ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--solid{background:var(--yl-green);color:var(--yl-cream);box-shadow:0 16px 30px -22px rgba(15,59,46,.9)}
.btn--solid:hover{background:var(--yl-green-soft)}
.btn--accent{background:var(--yl-coral);color:#0F3B2E;box-shadow:0 16px 30px -20px rgba(255,107,90,.9)}
.btn--accent:hover{background:#ff7d6d}
.btn--outline{border-color:rgba(15,59,46,.35);color:var(--yl-green);background:transparent}
.btn--outline:hover{background:var(--yl-green);color:var(--yl-cream);border-color:var(--yl-green)}
.btn--gold-outline{
  border-color:rgba(232,163,61,.8);
  background:rgba(232,163,61,.1);
  color:var(--yl-gold-soft);
}
.btn--gold-outline:hover{background:var(--yl-gold);color:var(--yl-green);border-color:var(--yl-gold)}
.btn--sm{padding:.6em 1.05em;font-size:.82rem}
.header-cta{white-space:nowrap}

/* =========================================================
   面包屑
   ========================================================= */
.breadcrumbs{padding-block:18px}
.breadcrumbs__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:9px;
  list-style:none;
  padding:0;
  font-family:var(--yl-font-mono);
  font-size:.76rem;
  font-weight:500;
  letter-spacing:.05em;
  color:var(--yl-sage);
}
.breadcrumbs__list li{display:flex;align-items:center;gap:9px}
.breadcrumbs__list li + li::before{content:"/";color:rgba(111,127,118,.55)}
.breadcrumbs__link{color:var(--yl-indigo);text-decoration:none}
.breadcrumbs__link:hover{text-decoration:underline;text-underline-offset:3px}
.breadcrumbs [aria-current="page"]{color:var(--yl-ink);font-weight:700}

/* =========================================================
   正文与内容组件
   ========================================================= */
.prose{
  max-width:40em;
  font-size:1.02rem;
  line-height:1.78;
  color:var(--yl-ink);
}
.prose p{margin-bottom:1.15em}
.prose p:last-child{margin-bottom:0}
.prose h2,.prose h3{margin:1.6em 0 .6em;letter-spacing:-.015em}
.prose ul,.prose ol{padding-left:1.3em;margin-bottom:1.15em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin-bottom:.45em}
.prose a{color:var(--yl-indigo);text-decoration-thickness:2px;text-underline-offset:3px}
.prose strong{font-weight:800}
.prose code{
  font-family:var(--yl-font-mono);
  font-size:.88em;
  padding:.12em .4em;
  border-radius:6px;
  background:var(--yl-sand);
  color:var(--yl-wine);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.65em;
  font-family:var(--yl-font-mono);
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.24em;
  color:var(--yl-wine);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--yl-gold);flex:0 0 auto}

.section-head{max-width:44em;margin-bottom:clamp(22px,3vw,38px)}
.section-title{margin-bottom:.4em}
.section-lede{
  font-size:1.02rem;
  line-height:1.75;
  color:var(--yl-sage);
  max-width:36em;
}

.panel{
  background:var(--yl-cream);
  border:1px solid var(--yl-line);
  border-radius:var(--yl-radius-lg);
  padding:clamp(20px,3vw,34px);
  box-shadow:var(--yl-shadow-soft);
}
.note-card{
  background:var(--yl-sand);
  border-left:4px solid var(--yl-gold);
  border-radius:0 var(--yl-radius-md) var(--yl-radius-md) 0;
  padding:clamp(16px,2.4vw,24px);
  font-size:.94rem;
  line-height:1.72;
  color:#2B352F;
}

.card-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(258px,1fr));
  gap:clamp(16px,2vw,24px);
}

.tag{
  display:inline-flex;
  align-items:center;
  padding:.36em .82em;
  border-radius:var(--yl-radius-pill);
  border:1px solid rgba(15,59,46,.14);
  background:var(--yl-sand);
  color:var(--yl-green);
  font-family:var(--yl-font-mono);
  font-size:.7rem;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1.2;
}
.tag--gold{background:var(--yl-amber);border-color:rgba(232,163,61,.65);color:#5A3A05}
.tag--wine{background:var(--yl-wine);border-color:transparent;color:var(--yl-cream)}
.tag--indigo{background:var(--yl-indigo);border-color:transparent;color:var(--yl-cream)}

/* 图片容器基础规则 */
.media-frame{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border-radius:var(--yl-radius-md);
  background:linear-gradient(150deg,var(--yl-sand) 0%,#E7DCC9 46%,var(--yl-amber) 100%);
  box-shadow:var(--yl-shadow-soft);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  background-image:
    linear-gradient(rgba(15,59,46,.08) 1px,transparent 1px),
    linear-gradient(90deg,rgba(15,59,46,.08) 1px,transparent 1px);
  background-size:34px 34px;
  opacity:.6;
  pointer-events:none;
}
.media-frame__img{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame__caption{
  position:absolute;
  left:14px;
  bottom:14px;
  z-index:2;
  padding:.5em .85em;
  border-radius:var(--yl-radius-pill);
  background:rgba(15,59,46,.8);
  color:var(--yl-cream);
  font-family:var(--yl-font-mono);
  font-size:.66rem;
  letter-spacing:.12em;
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}

/* 显现动效 */
.has-js .reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .5s var(--yl-ease),transform .5s var(--yl-ease);
}
.has-js .reveal.is-visible{opacity:1;transform:none}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1180px){
  .header-actions .header-cta:nth-of-type(1){display:none}
}

@media (max-width:1024px){
  .footer-body__inner{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
}

@media (max-width:960px){
  .site-header::before{background:rgba(15,59,46,.72)}
  .header-inner{min-height:var(--yl-header-h-sm);gap:12px}
  .site-header[data-scrolled="true"] .header-inner{min-height:var(--yl-header-h-sm)}
  .brand-mark{width:30px;height:30px;border-radius:9px}
  .brand-mark::after{inset:8px}
  .brand-name{font-size:.96rem}
  .brand-sub{font-size:.56rem;letter-spacing:.12em}

  .nav-toggle{display:inline-flex}
  .header-actions{display:none}

  .header-nav{
    position:fixed;
    inset:0;
    z-index:110;
    display:flex;
    flex-direction:column;
    justify-content:flex-start;
    align-items:stretch;
    padding:calc(var(--yl-header-h-sm) + 26px) var(--yl-gutter) 40px;
    overflow-y:auto;
    background:
      radial-gradient(110% 80% at 88% 0%,rgba(36,74,94,.85),rgba(36,74,94,0) 62%),
      linear-gradient(160deg,#17493A 0%,var(--yl-green) 56%,var(--yl-green-dark) 100%);
    opacity:0;
    visibility:hidden;
    transform:translateY(-16px);
    transition:opacity .3s var(--yl-ease),transform .38s var(--yl-ease),visibility .3s linear;
  }
  .site-header[data-nav-open="true"] .header-nav{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .nav-link{
    display:block;
    padding:1.05em .2em;
    border-radius:0;
    border-bottom:1px solid rgba(250,246,238,.14);
    font-size:1.1rem;
    font-weight:600;
    color:rgba(250,246,238,.92);
  }
  .nav-link:hover{background:transparent;color:var(--yl-gold-soft)}
  .nav-link[aria-current="page"]{
    background:transparent;
    color:var(--yl-gold-soft);
    box-shadow:inset 0 -2px 0 var(--yl-gold);
  }
  .nav-quick{display:flex;flex-direction:column;gap:12px;margin-top:30px}
  .nav-quick .btn{width:100%;padding:.95em 1.4em}
  .version-chip--drawer{display:inline-flex;justify-content:center;width:100%;padding:.8em 1em;font-size:.74rem}

  .page-offset{padding-top:calc(var(--yl-header-h-sm) + 26px)}
}

@media (max-width:900px){
  .span-4,.span-5,.span-6,.span-7,.span-8{grid-column:span 12}
  .col-start-2,.col-start-3{grid-column-start:auto}
  .footer-version__inner{grid-template-columns:1fr;align-items:start}
}

@media (max-width:760px){
  .footer-body__inner{grid-template-columns:1fr;gap:30px}
  .footer-bottom__inner{flex-direction:column;align-items:flex-start}
  .footer-version::after{display:none}
  h1{font-size:clamp(2.3rem,8.5vw,3.2rem)}
  h2{font-size:clamp(1.7rem,6vw,2.3rem)}
}

@media (max-width:560px){
  .brand-sub{display:none}
  .panel{border-radius:var(--yl-radius-md)}
  .media-frame{border-radius:16px}
  .card-grid{grid-template-columns:1fr}
  .version-pill{width:100%}
}

@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 .reveal{opacity:1;transform:none}
  .btn:hover,.version-pill:hover{transform:none}
}