/* =========================================================
   彩娱乐会馆 · Shared Site Kit
   夜航灯牌 × 数字会馆 / 锐利直角 · 1px 精密网格
   ========================================================= */

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

:root{
  --ink-900:#061826;
  --ink-990:#0B1117;
  --panel:#102B3A;
  --cyan:#35E6FF;
  --amber:#FFB454;
  --coral:#FF6F61;
  --fog:#F3F7F8;
  --slate:#8FA6B2;
  --line:#1E3D4D;
  --green:#4FE0B0;
  --warn:#F2C94C;

  --font-head:"Barlow Condensed","Oswald","Noto Sans SC","Source Han Sans SC",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono","SFMono-Regular",ui-monospace,monospace;

  --step-12:12px;
  --step-14:14px;
  --step-16:16px;
  --step-18:18px;
  --step-24:24px;
  --step-32:32px;
  --step-48:48px;
  --step-64:64px;
  --step-88:88px;

  --w-max:1440px;
  --w-content:1280px;
  --gutter:24px;

  --ease:cubic-bezier(.22,.61,.36,1);
  --glow-cyan:0 0 0 1px rgba(53,230,255,.32),0 18px 44px -28px rgba(53,230,255,.55);
}

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:132px;
}

body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol{margin:0;}
ul[class],ol[class]{list-style:none;padding:0;}
img,svg,video{display:block;max-width:100%;height:auto;}
button{font:inherit;color:inherit;background:none;border:0;}
[hidden]{display:none !important;}

body{
  min-height:100vh;
  overflow-x:hidden;
  color:var(--fog);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1100px 560px at 84% -14%, rgba(53,230,255,.11), transparent 62%),
    radial-gradient(880px 520px at 2% 108%, rgba(255,180,84,.07), transparent 60%),
    linear-gradient(180deg, rgba(11,17,23,.42), transparent 360px);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(30,61,77,.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30,61,77,.6) 1px, transparent 1px);
  background-size:80px 80px;
  opacity:.22;
  -webkit-mask-image:radial-gradient(125% 90% at 50% 0%, #000 28%, transparent 78%);
  mask-image:radial-gradient(125% 90% at 50% 0%, #000 28%, transparent 78%);
}

body > *{position:relative;z-index:1;}

/* ---------- 中文排版 ---------- */
h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.01em;
  color:var(--fog);
  text-wrap:balance;
}
h1{font-size:clamp(38px,5.2vw,68px);}
h2{font-size:clamp(26px,3.2vw,40px);}
h3{font-size:clamp(20px,2.2vw,26px);letter-spacing:0;}
h4{font-size:18px;letter-spacing:.02em;}

p{text-wrap:pretty;}

a{
  color:var(--cyan);
  text-decoration:none;
  text-underline-offset:3px;
}
a:hover{color:var(--fog);}

strong{color:var(--fog);font-weight:700;}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:0;
}

::selection{background:rgba(53,230,255,.28);color:#fff;}

.mono{
  font-family:var(--font-mono);
  font-size:var(--step-12);
  letter-spacing:.16em;
  color:var(--slate);
}

/* ---------- 跳转链 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:50%;
  z-index:300;
  transform:translate(-50%,-180%);
  padding:10px 20px;
  background:var(--cyan);
  color:#04222c;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  border:1px solid var(--cyan);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translate(-50%,0);color:#04222c;}

/* =========================================================
   头部 · 居中刊头导航
   ========================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg, rgba(6,24,38,.985), rgba(6,24,38,.94));
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(53,230,255,.5), transparent);
  pointer-events:none;
}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:6;
  height:2px;
  background:linear-gradient(90deg, var(--cyan), var(--amber));
  transform:scaleX(0);
  transform-origin:0 50%;
  pointer-events:none;
}

.masthead__inner{
  width:100%;
  max-width:var(--w-max);
  margin-inline:auto;
  padding:16px var(--gutter) 10px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:16px;
  transition:padding .22s var(--ease);
}

.masthead__rail{
  display:flex;
  flex-direction:column;
  gap:3px;
  min-width:0;
}
.masthead__rail--left{align-items:flex-start;}
.masthead__rail--right{
  flex-direction:row;
  align-items:center;
  justify-content:flex-end;
  gap:8px;
}
.masthead__index{
  font-size:11px;
  letter-spacing:.28em;
  color:var(--amber);
  transition:opacity .22s var(--ease);
}
.masthead__status{
  font-size:12.5px;
  line-height:1.5;
  color:rgba(143,166,178,.9);
  transition:opacity .22s var(--ease);
}

/* 报头字标 */
.brand{
  display:grid;
  justify-items:center;
  gap:5px;
  padding:2px 18px 4px;
  text-decoration:none;
  color:var(--fog);
  line-height:1;
}
.brand__seal{
  display:grid;
  place-items:center;
  width:24px;
  height:24px;
  border:1px solid rgba(53,230,255,.55);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1;
  background:rgba(53,230,255,.07);
  transition:opacity .22s var(--ease),height .22s var(--ease),margin .22s var(--ease);
}
.brand__name{
  font-family:var(--font-head);
  font-weight:700;
  font-size:34px;
  letter-spacing:.14em;
  line-height:1;
  color:var(--fog);
  text-indent:.14em;
  transition:font-size .22s var(--ease),color .16s var(--ease);
}
.brand:hover .brand__name{color:#fff;}
.brand__sub{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.42em;
  text-indent:.42em;
  color:var(--amber);
  white-space:nowrap;
}

/* 工具入口 */
.util-link{
  display:inline-flex;
  align-items:center;
  padding:7px 12px;
  border:1px solid var(--line);
  background:rgba(16,43,58,.5);
  color:var(--slate);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.18em;
  white-space:nowrap;
  transition:color .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease);
}
.util-link:hover{
  color:var(--cyan);
  border-color:rgba(53,230,255,.55);
  background:rgba(53,230,255,.08);
}
.util-link--hot{
  color:var(--coral);
  border-color:rgba(255,111,97,.42);
  background:rgba(255,111,97,.07);
}
.util-link--hot:hover{
  color:#fff;
  border-color:var(--coral);
  background:rgba(255,111,97,.18);
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 12px;
  border:1px solid var(--line);
  background:rgba(16,43,58,.7);
  color:var(--fog);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.2em;
  cursor:pointer;
  transition:border-color .16s var(--ease),background .16s var(--ease);
}
.nav-toggle:hover{border-color:rgba(53,230,255,.55);background:rgba(53,230,255,.08);}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;
  height:10px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:1px;
  background:var(--cyan);
  transition:transform .22s var(--ease),top .22s var(--ease);
}
.nav-toggle__bars::before{top:0;}
.nav-toggle__bars::after{top:9px;}
.site-header[data-open="true"] .nav-toggle__bars::before{top:4px;transform:rotate(45deg);}
.site-header[data-open="true"] .nav-toggle__bars::after{top:4px;transform:rotate(-45deg);}

/* 栏目导航 */
.site-nav{
  position:relative;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(11,17,23,.55), rgba(11,17,23,0));
}
.site-nav__list{
  counter-reset:navidx;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:stretch;
  width:100%;
  max-width:var(--w-max);
  margin-inline:auto;
  padding:0 var(--gutter);
}
.site-nav__item{
  counter-increment:navidx;
  border-left:1px solid var(--line);
}
.site-nav__item:last-child{border-right:1px solid var(--line);}
.site-nav__link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:9px;
  padding:11px 22px 13px;
  color:var(--slate);
  font-size:15px;
  letter-spacing:.06em;
  white-space:nowrap;
  transition:color .16s var(--ease),background .16s var(--ease);
}
.site-nav__link::before{
  content:"0" counter(navidx);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.08em;
  color:rgba(143,166,178,.5);
  transition:color .16s var(--ease);
}
.site-nav__link:hover{
  color:var(--fog);
  background:rgba(53,230,255,.06);
}
.site-nav__link:hover::before{color:var(--amber);}
.site-nav__link[aria-current="page"]{
  color:var(--fog);
  background:rgba(53,230,255,.09);
}
.site-nav__link[aria-current="page"]::before{color:var(--cyan);}
.site-nav__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:16px;
  right:16px;
  bottom:0;
  height:2px;
  background:var(--cyan);
  box-shadow:0 0 14px rgba(53,230,255,.85);
}

/* 滚动压缩 */
.site-header[data-compact="true"] .masthead__inner{padding-top:8px;padding-bottom:6px;}
.site-header[data-compact="true"] .brand__seal{
  height:0;
  margin-block:-3px;
  opacity:0;
}
.site-header[data-compact="true"] .brand__name{font-size:27px;}
.site-header[data-compact="true"] .masthead__status{opacity:0;}

/* =========================================================
   页脚 · 楼层索引页
   ========================================================= */
.site-footer{
  position:relative;
  margin-top:var(--step-64);
  background:
    linear-gradient(180deg, rgba(11,17,23,.35), var(--ink-990) 34%),
    var(--ink-990);
  border-top:1px solid var(--line);
  color:var(--slate);
  font-size:14px;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,180,84,.6), transparent);
}

.footer__grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.45fr 1fr;
  gap:34px 28px;
  width:100%;
  max-width:var(--w-max);
  margin-inline:auto;
  padding:56px var(--gutter) 40px;
}

.footer__col{min-width:0;}

.footer__title{
  margin:0 0 16px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.26em;
  color:var(--amber);
}

.footer__col--brand{display:flex;flex-direction:column;gap:14px;}

.footer__brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--fog);
}
.footer__seal{
  display:grid;
  place-items:center;
  width:26px;
  height:26px;
  border:1px solid rgba(53,230,255,.5);
  background:rgba(53,230,255,.08);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1;
}
.footer__brand-name{
  font-family:var(--font-head);
  font-weight:700;
  font-size:26px;
  letter-spacing:.14em;
  line-height:1;
}
.footer__brand:hover .footer__brand-name{color:#fff;}

.footer__note{
  max-width:28ch;
  font-size:13px;
  line-height:1.75;
  color:rgba(143,166,178,.92);
}
.footer__code{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  line-height:1.7;
  color:rgba(143,166,178,.72);
}
.footer__col--brand .footer__code{margin-top:0;}

.footer__list{
  display:grid;
  gap:9px;
}
.footer__list a{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--slate);
  font-size:14px;
  letter-spacing:.02em;
  transition:color .16s var(--ease),transform .16s var(--ease);
}
.footer__list a::before{
  content:"";
  width:10px;
  height:1px;
  background:var(--line);
  transition:background .16s var(--ease),width .16s var(--ease);
}
.footer__list a:hover{color:var(--cyan);}
.footer__list a:hover::before{background:var(--cyan);width:16px;}

.footer__contact{display:grid;gap:14px;}
.footer__contact li{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:7px;
}
.footer__label{
  flex:0 0 100%;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.22em;
  color:rgba(143,166,178,.7);
}
.footer__value{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.02em;
  color:var(--fog);
  overflow-wrap:anywhere;
}
.footer__value--wrap{font-family:var(--font-body);font-size:13.5px;line-height:1.6;}

.copy-btn{
  padding:2px 8px;
  border:1px solid var(--line);
  background:rgba(16,43,58,.6);
  color:var(--slate);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  cursor:pointer;
  transition:color .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease);
}
.copy-btn:hover{color:var(--cyan);border-color:rgba(53,230,255,.55);background:rgba(53,230,255,.08);}
.copy-btn[data-copied="true"]{
  color:var(--green);
  border-color:rgba(79,224,176,.6);
  background:rgba(79,224,176,.1);
}

.footer__feedback{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  padding:8px 14px;
  border:1px solid rgba(255,111,97,.45);
  background:rgba(255,111,97,.08);
  color:var(--coral);
  font-size:13.5px;
  letter-spacing:.06em;
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.footer__feedback::after{content:"→";font-family:var(--font-mono);}
.footer__feedback:hover{background:var(--coral);color:#1a0b08;border-color:var(--coral);}

.footer__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  width:100%;
  max-width:var(--w-max);
  margin-inline:auto;
  padding:18px var(--gutter) 28px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:rgba(143,166,178,.78);
}
.footer__copy,
.footer__icp{margin:0;}

.to-top{
  padding:7px 14px;
  border:1px solid var(--line);
  background:rgba(16,43,58,.6);
  color:var(--slate);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  cursor:pointer;
  transition:color .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease);
}
.to-top:hover{color:var(--cyan);border-color:rgba(53,230,255,.55);background:rgba(53,230,255,.08);}

/* =========================================================
   通用容器 / 按钮 / 面包屑 / 正文
   ========================================================= */
.container{
  width:100%;
  max-width:var(--w-content);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.container--wide{max-width:var(--w-max);}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.28em;
  color:var(--amber);
}
.eyebrow::before{
  content:"";
  width:24px;
  height:1px;
  background:var(--amber);
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:0;
  font-family:var(--font-body);
  font-size:14.5px;
  font-weight:500;
  letter-spacing:.06em;
  line-height:1.3;
  text-decoration:none;
  cursor:pointer;
  transition:background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.btn--primary{
  background:var(--coral);
  color:#1a0b08;
  border-color:var(--coral);
  font-weight:700;
}
.btn--primary:hover{background:#ff8d82;color:#1a0b08;border-color:#ff8d82;}
.btn--ghost{
  background:transparent;
  color:var(--cyan);
  border-color:rgba(53,230,255,.5);
}
.btn--ghost:hover{
  background:rgba(53,230,255,.1);
  color:#fff;
  border-color:var(--cyan);
}
.btn--quiet{
  background:rgba(16,43,58,.6);
  color:var(--slate);
  border-color:var(--line);
}
.btn--quiet:hover{background:rgba(16,43,58,.95);color:var(--fog);border-color:var(--slate);}

.breadcrumb{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li + li::before{
  content:"/";
  color:var(--line);
}
.breadcrumb a{color:var(--slate);}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb [aria-current="page"]{color:var(--fog);}

.prose{
  max-width:720px;
  font-size:17px;
  line-height:1.8;
  color:rgba(243,247,248,.9);
}
.prose > * + *{margin-top:1.15em;}
.prose h2{margin-top:2em;font-size:clamp(24px,2.6vw,32px);}
.prose h3{margin-top:1.6em;font-size:20px;}
.prose ul,.prose ol{padding-left:1.4em;list-style:disc;}
.prose ol{list-style:decimal;}
.prose li + li{margin-top:.4em;}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(53,230,255,.4);}
.prose a:hover{color:#fff;border-bottom-color:#fff;}
.prose blockquote{
  padding:14px 20px;
  border-left:2px solid var(--amber);
  background:rgba(16,43,58,.55);
  color:var(--slate);
}

/* ---------- 十二列网格 ---------- */
.grid{
  display:grid;
  gap:16px;
}
.grid--12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gutter);
}
.col-1{grid-column:span 1;}
.col-2{grid-column:span 2;}
.col-3{grid-column:span 3;}
.col-4{grid-column:span 4;}
.col-5{grid-column:span 5;}
.col-6{grid-column:span 6;}
.col-7{grid-column:span 7;}
.col-8{grid-column:span 8;}
.col-9{grid-column:span 9;}
.col-10{grid-column:span 10;}
.col-11{grid-column:span 11;}
.col-12{grid-column:span 12;}

/* ---------- 可复用图片容器 ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(53,230,255,.08), transparent 55%),
    var(--panel);
  aspect-ratio:16 / 10;
}
.media > img,
.media > picture,
.media > picture > img,
.media > video{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(6,24,38,0) 42%, rgba(6,24,38,.78));
  pointer-events:none;
}
.media--plain::after{display:none;}
.media--wide{aspect-ratio:21 / 9;}
.media--square{aspect-ratio:1 / 1;}
.media--tall{aspect-ratio:3 / 4;}
.media__label{
  position:absolute;
  left:12px;
  bottom:10px;
  z-index:2;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--fog);
}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid var(--line);
  background:rgba(16,43,58,.6);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--slate);
}
.tag--amber{color:var(--amber);border-color:rgba(255,180,84,.45);background:rgba(255,180,84,.08);}
.tag--cyan{color:var(--cyan);border-color:rgba(53,230,255,.45);background:rgba(53,230,255,.08);}
.tag--coral{color:var(--coral);border-color:rgba(255,111,97,.45);background:rgba(255,111,97,.08);}
.tag--green{color:var(--green);border-color:rgba(79,224,176,.45);background:rgba(79,224,176,.08);}

/* ---------- 可展开内容组 ---------- */
.expand{
  border:1px solid var(--line);
  background:rgba(16,43,58,.5);
}
.expand + .expand{margin-top:-1px;}
.expand__trigger{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  padding:15px 18px;
  color:var(--fog);
  font-family:var(--font-body);
  font-size:16px;
  text-align:left;
  cursor:pointer;
  transition:background .16s var(--ease),color .16s var(--ease);
}
.expand__trigger:hover{background:rgba(53,230,255,.07);}
.expand__trigger::after{
  content:"+";
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:17px;
  color:var(--amber);
  transition:color .16s var(--ease);
}
.expand__trigger[aria-expanded="true"]{background:rgba(53,230,255,.08);}
.expand__trigger[aria-expanded="true"]::after{content:"–";color:var(--cyan);}
.expand__panel{
  padding:0 18px 18px;
  color:var(--slate);
  font-size:15px;
  line-height:1.8;
}

/* ---------- 显现动画 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
[data-reveal].is-in{opacity:1;transform:none;}

.main-content:focus{outline:none;}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1240px){
  .footer__grid{grid-template-columns:1.4fr 1fr 1fr 1.3fr;}
  .footer__col:nth-child(5){grid-column:1 / -1;}
  .footer__col:nth-child(5) .footer__list{
    grid-auto-flow:column;
    justify-content:start;
    gap:22px;
  }
}

@media (max-width:1100px){
  .footer__grid{grid-template-columns:1.4fr 1fr 1fr;}
  .footer__col--brand{grid-column:1 / -1;}
  .footer__col:nth-child(5){grid-column:auto;}
  .footer__col:nth-child(5) .footer__list{grid-auto-flow:row;}
}

@media (max-width:920px){
  html{scroll-padding-top:96px;}

  .masthead__inner{
    grid-template-columns:minmax(0,1fr) auto;
    padding:12px 20px;
    gap:12px;
  }
  .masthead__rail--left{display:none;}
  .masthead__rail--right{grid-column:2;justify-content:flex-end;}
  .brand{justify-items:start;padding:0;}
  .brand__seal{display:none;}
  .brand__name{font-size:26px;letter-spacing:.1em;text-indent:.1em;}
  .brand__sub{font-size:9.5px;letter-spacing:.34em;text-indent:.34em;}

  .nav-toggle{display:inline-flex;}

  .site-nav{display:none;}
  .site-header[data-open="true"] .site-nav{
    display:block;
    max-height:calc(100vh - 84px);
    overflow-y:auto;
    border-top:1px solid var(--line);
    background:rgba(9,20,29,.99);
  }
  .site-nav__list{
    flex-direction:column;
    flex-wrap:nowrap;
    padding:0;
  }
  .site-nav__item{
    border-left:0;
    border-right:0;
    border-top:1px solid var(--line);
  }
  .site-nav__item:first-child{border-top:0;}
  .site-nav__item:last-child{border-right:0;}
  .site-nav__link{
    padding:14px 20px;
    font-size:16px;
    white-space:normal;
  }
  .site-nav__link[aria-current="page"]::after{
    left:0;
    right:auto;
    top:0;
    bottom:0;
    width:3px;
    height:auto;
    box-shadow:0 0 14px rgba(53,230,255,.9);
  }

  .site-header[data-compact="true"] .brand__name{font-size:22px;}
  .site-header[data-compact="true"] .masthead__inner{padding-top:10px;padding-bottom:10px;}

  .grid--12{grid-template-columns:repeat(4,minmax(0,1fr));}
  .grid--12 > [class*="col-"]{grid-column:1 / -1;}

  .footer__grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:30px 20px;
    padding:44px 20px 32px;
  }
  .footer__col--brand{grid-column:1 / -1;}
  .footer__base{padding:16px 20px 26px;}
}

@media (max-width:720px){
  :root{--gutter:18px;}
  body{font-size:15.5px;}
  .prose{font-size:16.5px;}
  .footer__base{
    flex-direction:column;
    align-items:flex-start;
    gap:10px;
  }
  .to-top{align-self:flex-start;}
}

@media (max-width:480px){
  .masthead__rail--right .util-link:first-of-type{display:none;}
  .brand__name{font-size:23px;}
  .footer__grid{grid-template-columns:1fr;gap:26px;}
  .footer__col--brand{grid-column:auto;}
  .brand__sub{letter-spacing:.26em;text-indent:.26em;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none;}
}