/* =========================================================
   /assets/site.css — 特色棋牌官方 共享样式
   骨架：刻度轴 + Bento 单元 / 深墨绿 + 暗夜蓝 + 暖纸色
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0;}
ul,ol{list-style:none;}
img,svg{display:block;max-width:100%;height:auto;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;}
[hidden]{display:none !important;}
:focus-visible{outline:3px solid #35E0D0;outline-offset:2px;}

/* ---------- 2. 设计令牌 ---------- */
:root{
  --sq-ink:#0E2A26;
  --sq-night:#0B1626;
  --sq-carbon:#0B0F12;
  --sq-paper:#EFE6D2;
  --sq-paper-white:#FAF6EC;
  --sq-cyan:#35E0D0;
  --sq-amber:#E8A33D;
  --sq-sage:#7FA39C;
  --sq-red:#C4553B;

  --sq-edge:3px;
  --sq-shadow:6px 6px 0 var(--sq-carbon);
  --sq-shadow-press:2px 2px 0 var(--sq-carbon);
  --sq-rail:112px;
  --sq-shell:1200px;
  --sq-gap:clamp(14px,1.6vw,24px);

  --sq-font-head:"Archivo Narrow","Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --sq-font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --sq-font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;
}

/* ---------- 3. 基础与中文排版 ---------- */
body{
  display:flex;
  flex-direction:column;
  min-height:100vh;
  font-family:var(--sq-font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--sq-paper);
  background-color:var(--sq-night);
  background-image:
    repeating-linear-gradient(0deg,rgba(127,163,156,.06) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(90deg,rgba(127,163,156,.06) 0 1px,transparent 1px 48px);
}
h1,h2,h3,h4{font-family:var(--sq-font-head);font-weight:600;letter-spacing:.06em;line-height:1.22;}
p{max-width:44em;}
strong{color:var(--sq-paper-white);font-weight:600;}
::selection{background:var(--sq-cyan);color:var(--sq-carbon);}

/* ---------- 4. 布局骨架 ---------- */
.sq-main{flex:1 1 auto;min-width:0;position:relative;z-index:1;}
#main-content{scroll-margin-top:140px;}
#main-content:focus{outline:none;}

.sq-shell{
  width:100%;
  max-width:var(--sq-shell);
  margin:0 auto;
  padding-left:clamp(16px,3vw,34px);
  padding-right:clamp(16px,3vw,34px);
}
.sq-section{padding:clamp(34px,5.5vw,86px) 0;border-bottom:var(--sq-edge) solid rgba(11,15,18,.9);}
.sq-section--paper{background:var(--sq-paper);color:var(--sq-carbon);border-bottom-color:var(--sq-carbon);}
.sq-section--paper .sq-title,.sq-section--paper .sq-prose h2,.sq-section--paper .sq-prose h3{color:var(--sq-ink);}
.sq-section--paper .sq-lede{color:rgba(11,15,18,.78);}
.sq-section__head{display:flex;flex-direction:column;gap:12px;margin-bottom:clamp(20px,3vw,38px);}

.sq-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--sq-gap);}
.sq-grid > *{grid-column:1 / -1;min-width:0;}
@media (min-width:768px){
  .sq-span-3,.sq-span-4{grid-column:span 4;}
  .sq-span-5,.sq-span-6,.sq-span-7,.sq-span-8,.sq-span-9,.sq-span-12{grid-column:span 8;}
}
@media (min-width:1024px){
  .sq-span-3{grid-column:span 3;}
  .sq-span-4{grid-column:span 4;}
  .sq-span-5{grid-column:span 5;}
  .sq-span-6{grid-column:span 6;}
  .sq-span-7{grid-column:span 7;}
  .sq-span-8{grid-column:span 8;}
  .sq-span-9{grid-column:span 9;}
  .sq-span-12{grid-column:span 12;}
}

/* ---------- 5. 排版组件 ---------- */
.sq-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--sq-font-mono);font-size:12px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--sq-cyan);max-width:none;
}
.sq-eyebrow::before{content:"";width:18px;height:2px;background:var(--sq-cyan);flex:0 0 auto;}

.sq-title{font-size:clamp(28px,4.6vw,56px);color:var(--sq-paper-white);letter-spacing:.06em;}
.sq-title--xl{font-size:clamp(32px,6.4vw,72px);line-height:1.06;}

.sq-lede{font-size:clamp(15px,1.6vw,18px);line-height:1.85;color:rgba(250,246,236,.82);max-width:34em;}

.sq-num{
  display:block;font-family:var(--sq-font-mono);font-weight:400;
  font-size:clamp(40px,7vw,96px);line-height:.9;letter-spacing:-.02em;color:var(--sq-amber);
}

.sq-tag{
  display:inline-block;font-family:var(--sq-font-mono);font-size:11px;letter-spacing:.14em;
  padding:3px 9px;border:1px solid currentColor;color:var(--sq-sage);
}
.sq-tag--amber{color:var(--sq-amber);}
.sq-tag--red{color:var(--sq-red);}

.sq-meta{font-family:var(--sq-font-mono);font-size:12px;letter-spacing:.08em;color:var(--sq-sage);}

/* ---------- 6. 按钮 ---------- */
.sq-btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--sq-font-head);font-size:14px;letter-spacing:.14em;
  padding:11px 18px;border:var(--sq-edge) solid var(--sq-carbon);
  background:var(--sq-cyan);color:var(--sq-carbon);
  box-shadow:4px 4px 0 var(--sq-carbon);
  transition:box-shadow .18s ease,transform .18s ease,background-color .18s ease,color .18s ease;
}
.sq-btn:hover{box-shadow:2px 2px 0 var(--sq-carbon);transform:translate(2px,2px);}
.sq-btn--amber{background:var(--sq-amber);}
.sq-btn--ghost{background:transparent;color:var(--sq-cyan);border-color:var(--sq-cyan);box-shadow:4px 4px 0 rgba(53,224,208,.28);}
.sq-btn--ghost:hover{box-shadow:2px 2px 0 rgba(53,224,208,.28);}
.sq-btn--sm{padding:7px 12px;font-size:12px;box-shadow:3px 3px 0 var(--sq-carbon);}

/* ---------- 7. 卡片（三段式 Bento 单元） ---------- */
.sq-card,.sq-card--paper{
  position:relative;
  background:var(--sq-paper);color:var(--sq-carbon);
  border:var(--sq-edge) solid var(--sq-carbon);
  box-shadow:var(--sq-shadow);
  padding:clamp(16px,2vw,26px);
  transition:box-shadow .18s ease,transform .18s ease;
}
.sq-card:hover,.sq-card--paper:hover{box-shadow:var(--sq-shadow-press);transform:translate(4px,4px);}
.sq-card--night{
  background:var(--sq-night);color:var(--sq-paper);
  border-color:var(--sq-cyan);
  box-shadow:6px 6px 0 rgba(11,15,18,.9);
}
.sq-card--night .sq-card__label{color:var(--sq-sage);}
.sq-card--night .sq-card__note{color:rgba(250,246,236,.78);}
.sq-card--focus{border-color:var(--sq-amber);}
.sq-card--notch::after{
  content:"";position:absolute;right:0;bottom:0;width:0;height:0;
  border-style:solid;border-width:0 0 22px 22px;
  border-color:transparent transparent var(--sq-amber) transparent;
}
.sq-card__label{
  display:block;font-family:var(--sq-font-mono);font-size:12px;letter-spacing:.2em;
  color:var(--sq-ink);margin-bottom:10px;
}
.sq-card__value{
  display:block;font-family:var(--sq-font-mono);font-size:clamp(34px,5vw,64px);
  line-height:1;color:var(--sq-amber);margin-bottom:10px;
}
.sq-card__note{font-size:14.5px;line-height:1.75;color:rgba(11,15,18,.76);max-width:34em;}

/* ---------- 8. 表格 ---------- */
.sq-table-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  border:var(--sq-edge) solid var(--sq-carbon);
  background:var(--sq-paper);color:var(--sq-carbon);
  box-shadow:var(--sq-shadow);
}
.sq-table{min-width:560px;font-size:15px;}
.sq-table caption{
  caption-side:top;text-align:left;padding:12px 14px;
  font-family:var(--sq-font-head);letter-spacing:.14em;font-size:13px;
  color:var(--sq-paper);background:var(--sq-ink);
}
.sq-table th,.sq-table td{padding:10px 14px;text-align:left;vertical-align:top;border-bottom:1px solid rgba(11,15,18,.16);}
.sq-table thead th{
  position:sticky;top:0;z-index:1;background:var(--sq-ink);color:var(--sq-paper);
  font-family:var(--sq-font-head);font-size:13px;letter-spacing:.12em;white-space:nowrap;
}
.sq-table tbody tr:nth-child(even){background:rgba(11,15,18,.05);}
.sq-table tbody tr:last-child th,.sq-table tbody tr:last-child td{border-bottom:0;}
.sq-num-cell{font-family:var(--sq-font-mono);font-size:16px;color:#8A5A12;white-space:nowrap;}

/* ---------- 9. 分段切换（tabs） ---------- */
.sq-tabs{display:flex;flex-direction:column;}
.sq-tabs__list{display:flex;flex-wrap:wrap;gap:8px;}
.sq-tabs__tab{
  font-family:var(--sq-font-head);font-size:14px;letter-spacing:.16em;
  padding:9px 16px;border:var(--sq-edge) solid var(--sq-carbon);
  background:var(--sq-ink);color:var(--sq-paper);
  transition:background-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.sq-tabs__tab:hover{color:var(--sq-cyan);}
.sq-tabs__tab[aria-selected="true"]{
  background:var(--sq-paper);color:var(--sq-carbon);
  box-shadow:inset 0 -4px 0 var(--sq-amber);
}
.sq-tabs__panel{padding-top:clamp(16px,2.4vw,28px);}

/* ---------- 10. 本地过滤 ---------- */
.sq-filter{display:flex;flex-direction:column;gap:16px;}
.sq-filter__bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  padding:10px 12px;background:var(--sq-paper);
  border:var(--sq-edge) solid var(--sq-carbon);box-shadow:var(--sq-shadow);
}
.sq-filter__input{
  flex:1 1 220px;min-width:0;
  padding:9px 12px;font-family:var(--sq-font-body);font-size:15px;
  background:var(--sq-paper-white);color:var(--sq-carbon);
  border:2px solid rgba(11,15,18,.28);
}
.sq-filter__input::placeholder{color:rgba(11,15,18,.45);}
.sq-filter__input:focus-visible{border-color:var(--sq-cyan);outline-offset:0;}
.sq-filter__count{font-family:var(--sq-font-mono);font-size:13px;color:var(--sq-ink);white-space:nowrap;}
.sq-filter__empty{font-size:14px;color:var(--sq-sage);}

/* ---------- 11. 图片容器 ---------- */
.sq-figure{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16 / 9;
  border:var(--sq-edge) solid var(--sq-carbon);
  background:
    linear-gradient(135deg,var(--sq-ink) 0%,var(--sq-night) 60%,#11202F 100%);
  box-shadow:var(--sq-shadow);
}
.sq-figure img{width:100%;height:100%;object-fit:cover;}
.sq-figure--wide{aspect-ratio:21 / 9;}
.sq-figure--tall{aspect-ratio:3 / 4;}
.sq-figure--square{aspect-ratio:1 / 1;}
.sq-figure__cap{
  position:absolute;left:0;bottom:0;
  padding:5px 10px;background:var(--sq-carbon);color:var(--sq-paper);
  font-family:var(--sq-font-mono);font-size:11px;letter-spacing:.1em;
}

/* ---------- 12. 面包屑 ---------- */
.sq-breadcrumb{font-family:var(--sq-font-mono);font-size:12px;letter-spacing:.1em;color:var(--sq-sage);}
.sq-breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.sq-breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.sq-breadcrumb li + li::before{content:"›";color:var(--sq-cyan);}
.sq-breadcrumb a{color:rgba(250,246,236,.8);}
.sq-breadcrumb a:hover{color:var(--sq-cyan);}
.sq-breadcrumb [aria-current="page"]{color:var(--sq-paper-white);}

/* ---------- 13. 正文窄栏 ---------- */
.sq-prose{max-width:40em;font-size:17px;line-height:1.85;color:rgba(250,246,236,.88);}
.sq-prose > * + *{margin-top:1.05em;}
.sq-prose h2{font-size:clamp(22px,2.6vw,30px);color:var(--sq-paper-white);}
.sq-prose h3{font-size:19px;color:var(--sq-paper-white);}
.sq-prose ul{display:flex;flex-direction:column;gap:.5em;}
.sq-prose ul li{position:relative;padding-left:1.4em;}
.sq-prose ul li::before{content:"";position:absolute;left:0;top:.78em;width:10px;height:2px;background:var(--sq-cyan);}
.sq-prose a{color:var(--sq-cyan);border-bottom:1px solid rgba(53,224,208,.5);}
.sq-prose--paper{color:rgba(11,15,18,.86);}
.sq-prose--paper h2,.sq-prose--paper h3{color:var(--sq-ink);}
.sq-prose--paper a{color:#14574F;border-bottom-color:rgba(14,42,38,.4);}

/* ---------- 14. 跳至主内容 ---------- */
.sq-skip{
  position:absolute;left:-9999px;top:0;z-index:200;
  padding:10px 16px;background:var(--sq-cyan);color:var(--sq-carbon);
  font-family:var(--sq-font-head);letter-spacing:.1em;
  border:var(--sq-edge) solid var(--sq-carbon);
}
.sq-skip:focus{left:12px;top:12px;}

/* ---------- 15. 页头 ---------- */
.sq-header{
  position:sticky;top:0;z-index:80;
  font-family:var(--sq-font-head);
}
.sq-header__rail{
  display:flex;align-items:center;gap:14px;
  padding:10px 14px;
  background:linear-gradient(90deg,var(--sq-carbon) 0%,var(--sq-ink) 100%);
  border-bottom:var(--sq-edge) solid var(--sq-carbon);
}
.sq-brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.sq-brand__mark{
  display:grid;place-items:center;flex:0 0 auto;
  width:34px;height:34px;
  background:var(--sq-ink);color:var(--sq-cyan);
  border:var(--sq-edge) solid var(--sq-cyan);
  font-family:var(--sq-font-mono);font-size:15px;line-height:1;
}
.sq-brand__name{
  font-size:16px;letter-spacing:.2em;color:var(--sq-paper-white);white-space:nowrap;
}
.sq-brand__sub{
  display:none;font-family:var(--sq-font-mono);font-size:11px;
  letter-spacing:.08em;color:var(--sq-sage);
}
.sq-scale{
  display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;
  overflow-x:auto;scrollbar-width:none;
}
.sq-scale::-webkit-scrollbar{display:none;}
.sq-scale__item{
  display:inline-flex;align-items:center;gap:5px;flex:0 0 auto;
  padding:4px 8px;border:1px solid rgba(127,163,156,.35);
  font-family:var(--sq-font-mono);font-size:11px;letter-spacing:.06em;
  color:var(--sq-sage);white-space:nowrap;
  transition:border-color .3s ease,color .3s ease,background-color .3s ease;
}
.sq-scale__num{color:var(--sq-amber);}
.sq-scale__label{font-size:11px;}
.sq-scale__item[data-done]{border-color:rgba(53,224,208,.4);color:rgba(250,246,236,.72);}
.sq-scale__item[data-active]{border-color:var(--sq-cyan);background:rgba(53,224,208,.12);color:var(--sq-cyan);}

.sq-header__bar{
  position:relative;display:flex;align-items:center;justify-content:flex-end;gap:14px;
  padding:10px clamp(14px,3vw,32px);
  background:var(--sq-ink);
  border-bottom:var(--sq-edge) solid var(--sq-carbon);
}
.sq-header__note{
  margin-right:auto;font-family:var(--sq-font-mono);font-size:12px;
  letter-spacing:.1em;color:var(--sq-sage);max-width:none;
}
.sq-nav-toggle{
  display:inline-flex;align-items:center;gap:9px;flex:0 0 auto;
  padding:7px 13px;border:var(--sq-edge) solid var(--sq-sage);
  background:rgba(11,15,18,.6);color:var(--sq-paper);
  font-family:var(--sq-font-head);font-size:13px;letter-spacing:.16em;
  transition:border-color .18s ease,color .18s ease;
}
.sq-nav-toggle:hover{border-color:var(--sq-cyan);color:var(--sq-cyan);}
.sq-nav-toggle[aria-expanded="true"]{border-color:var(--sq-cyan);color:var(--sq-cyan);background:rgba(53,224,208,.1);}
.sq-nav-toggle__bars{display:flex;flex-direction:column;gap:3px;width:16px;}
.sq-nav-toggle__bars span{display:block;height:2px;background:currentColor;}
.sq-nav-toggle__bars span:nth-child(2){width:70%;}

.sq-nav{
  position:absolute;top:100%;left:0;right:0;display:none;
  padding:14px clamp(14px,3vw,32px) 20px;
  background:var(--sq-night);
  border-bottom:var(--sq-edge) solid var(--sq-cyan);
  box-shadow:0 12px 0 rgba(11,15,18,.45);
  max-height:calc(100vh - 120px);overflow-y:auto;
}
.sq-nav[data-open]{display:block;}
.sq-nav__list{display:flex;flex-direction:column;gap:4px;}
.sq-nav__item{min-width:0;}
.sq-nav__link{
  display:block;padding:11px 12px;
  border-left:3px solid rgba(127,163,156,.35);
  font-size:15px;letter-spacing:.14em;color:var(--sq-paper);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.sq-nav__link:hover{background:rgba(53,224,208,.08);border-left-color:var(--sq-cyan);color:var(--sq-cyan);}
.sq-nav__link[aria-current="page"]{background:rgba(53,224,208,.12);border-left-color:var(--sq-cyan);color:var(--sq-cyan);}
.sq-nav__cta{margin-top:16px;}

.sq-progress{
  position:absolute;left:0;right:0;bottom:0;height:4px;
  background:rgba(11,15,18,.9);
}
.sq-progress__fill{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--sq-sage) 0%,var(--sq-cyan) 100%);
  transition:width .12s linear;
}

/* ---------- 16. 页脚 ---------- */
.sq-footer{
  background:var(--sq-night);
  border-top:var(--sq-edge) solid var(--sq-carbon);
  box-shadow:inset 0 1px 0 rgba(53,224,208,.22);
}
.sq-footer__inner{
  max-width:var(--sq-shell);margin:0 auto;
  padding:clamp(28px,4vw,60px) clamp(16px,3vw,34px) clamp(22px,3vw,36px);
  display:grid;grid-template-columns:1fr;gap:clamp(22px,3vw,38px);
}
@media (min-width:640px){.sq-footer__inner{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.sq-footer__inner{grid-template-columns:1.5fr 1fr 1.4fr 1.1fr;}}
.sq-footer__col{min-width:0;}
.sq-footer__brand{
  font-family:var(--sq-font-head);font-size:20px;letter-spacing:.2em;
  color:var(--sq-paper-white);max-width:none;
}
.sq-footer__desc{
  margin-top:10px;max-width:34em;font-size:14px;line-height:1.8;
  color:rgba(250,246,236,.72);
}
.sq-footer__meta{
  display:flex;align-items:center;gap:9px;margin-top:14px;max-width:none;
  font-family:var(--sq-font-mono);font-size:11px;letter-spacing:.08em;color:var(--sq-sage);
}
.sq-footer__dot{
  width:8px;height:8px;flex:0 0 auto;background:var(--sq-cyan);
  box-shadow:0 0 0 3px rgba(53,224,208,.18);
}
.sq-footer__title{
  padding-bottom:8px;margin-bottom:12px;
  border-bottom:2px solid rgba(127,163,156,.28);
  font-family:var(--sq-font-head);font-size:12px;letter-spacing:.24em;
  color:var(--sq-amber);
}
.sq-footer__list{display:flex;flex-direction:column;gap:8px;font-size:14px;}
.sq-footer__list--stack{gap:14px;}
.sq-footer__link{
  color:rgba(250,246,236,.82);border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.sq-footer__link:hover,.sq-footer__link:focus-visible{color:var(--sq-cyan);border-bottom-color:var(--sq-cyan);}
.sq-footer__key{
  display:block;font-family:var(--sq-font-mono);font-size:11px;
  letter-spacing:.1em;color:var(--sq-sage);
}
.sq-footer__value{
  display:block;font-family:var(--sq-font-mono);font-size:13px;
  line-height:1.6;color:var(--sq-paper);word-break:break-word;
}
.sq-footer__col--legal{font-size:12px;}
.sq-footer__legal{
  margin-top:10px;max-width:30em;font-size:12px;line-height:1.7;
  color:rgba(127,163,156,.95);
}

/* ---------- 17. 动效与显现 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(12px);
  transition:opacity .48s ease,transform .48s ease;
  transition-delay:var(--sq-delay,0ms);
}
[data-reveal][data-visible]{opacity:1;transform:none;}

/* ---------- 18. 响应式：桌面刻度轴 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--sq-rail);}

  .sq-header__rail{
    position:fixed;top:0;left:0;bottom:0;width:var(--sq-rail);
    flex-direction:column;align-items:stretch;gap:0;
    padding:24px 12px 22px;overflow-y:auto;
    background:linear-gradient(180deg,var(--sq-carbon) 0%,var(--sq-ink) 55%,var(--sq-night) 100%);
    border-bottom:0;border-right:var(--sq-edge) solid var(--sq-carbon);
    box-shadow:inset -1px 0 0 rgba(53,224,208,.2);
    z-index:90;
  }
  .sq-brand{flex-direction:column;align-items:center;text-align:center;gap:12px;}
  .sq-brand__name{writing-mode:vertical-rl;font-size:17px;letter-spacing:.32em;}
  .sq-brand__sub{display:block;writing-mode:vertical-rl;letter-spacing:.22em;}

  .sq-scale{
    flex-direction:column;align-items:stretch;gap:0;
    flex:1 1 auto;margin-top:22px;overflow:visible;
    border-top:1px solid rgba(127,163,156,.25);
  }
  .sq-scale__item{
    position:relative;justify-content:flex-start;gap:8px;
    padding:7px 0 7px 16px;border:0;
    border-left:2px solid rgba(127,163,156,.28);
  }
  .sq-scale__item::before{
    content:"";position:absolute;left:-2px;top:50%;
    width:8px;height:2px;background:currentColor;
    transform:translateY(-50%);opacity:.85;
  }
  .sq-scale__item[data-done]{border-left-color:rgba(53,224,208,.45);}
  .sq-scale__item[data-active]{
    border-left-color:var(--sq-cyan);
    background:linear-gradient(90deg,rgba(53,224,208,.14),transparent);
  }

  .sq-header__bar{gap:16px;padding-top:9px;padding-bottom:9px;}

  .sq-nav,.sq-nav[data-open]{
    position:static;display:flex;align-items:center;gap:10px;
    padding:0;background:transparent;border:0;box-shadow:none;
    max-height:none;overflow:visible;
  }
  .sq-nav__list{flex-direction:row;align-items:center;gap:4px;}
  .sq-nav__link{
    padding:8px 12px;border:2px solid transparent;
    font-size:14px;letter-spacing:.16em;
  }
  .sq-nav__link:hover{background:rgba(53,224,208,.06);border-color:rgba(53,224,208,.45);}
  .sq-nav__link[aria-current="page"]{background:rgba(53,224,208,.08);border-color:var(--sq-cyan);}
  .sq-nav__cta{margin-top:0;margin-left:10px;}

  .sq-nav-toggle{display:none;}
  .sq-header[data-compact] .sq-nav-toggle{display:inline-flex;}
  .sq-header[data-compact] .sq-nav{display:none;}
  .sq-header[data-compact] .sq-nav[data-open]{
    display:flex;flex-direction:column;align-items:stretch;gap:6px;
    position:absolute;top:100%;right:clamp(14px,3vw,32px);left:auto;
    padding:12px;background:var(--sq-night);
    border:var(--sq-edge) solid var(--sq-cyan);
    box-shadow:8px 8px 0 rgba(11,15,18,.75);
  }
  .sq-header[data-compact] .sq-nav__list{flex-direction:column;align-items:stretch;}
  .sq-header[data-compact] .sq-nav__link{
    border:0;border-left:3px solid rgba(127,163,156,.35);padding:10px 12px;
  }
  .sq-header[data-compact] .sq-nav__link[aria-current="page"]{border-left-color:var(--sq-cyan);}
  .sq-header[data-compact] .sq-nav__cta{margin-left:0;margin-top:10px;}
}

@media (max-width:559px){
  .sq-header__note{display:none;}
}

/* ---------- 19. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  [data-reveal]{opacity:1;transform:none;}
  .sq-card:hover,.sq-card--paper:hover{transform:none;box-shadow:var(--sq-shadow);}
  .sq-btn:hover{transform:none;}
}