/* ===========================================================
   微扑克轻量版 · 共享站点样式 /assets/site.css
   奶油纸阅读面 + 深墨绿控制台 + 电光青状态层 + 暖沙金索引
   =========================================================== */

/* ---------- 1. 设计变量 ---------- */
:root{
  --ink:#0B2B26;
  --ink-2:#163D36;
  --paper:#F4EFE4;
  --paper-2:#FBF7EE;
  --text:#1D1B16;
  --gold:#D8A657;
  --cyan:#39E0D6;
  --ember:#E35B3D;
  --violet:#6D6BE8;
  --mist:#8FA3A0;
  --white:#FFFFFF;

  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --wrap:1280px;
  --gutter:clamp(20px,4.5vw,56px);
  --header-h:76px;

  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;

  --line:rgba(29,27,22,.14);
  --line-strong:rgba(29,27,22,.26);
  --line-light:rgba(244,239,228,.16);

  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:200ms;
  --shadow-card:0 18px 40px -30px rgba(11,43,38,.6);
}

/* ---------- 2. Reset 与基础排版 ---------- */
*,
*::before,
*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 18px);
}

body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}

h1,h2,h3,h4{
  line-height:1.22;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--ink);
}
h1{font-size:clamp(2rem,4.4vw,3.4rem);line-height:1.12}
h2{font-size:clamp(1.5rem,2.8vw,2.2rem)}
h3{font-size:clamp(1.15rem,1.8vw,1.4rem);font-weight:700}

a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}
strong{font-weight:700}

:focus-visible{
  outline:2px dashed var(--ink);
  outline-offset:3px;
  border-radius:4px;
}
.site-header :focus-visible,
.site-footer :focus-visible,
.media-frame--ink :focus-visible{
  outline-color:var(--cyan);
}

::selection{background:var(--cyan);color:var(--ink)}

/* ---------- 3. 通用容器与节奏 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.section{padding-block:clamp(48px,7vw,96px)}
.section--tight{padding-block:clamp(30px,4vw,56px)}

.stack > * + *{margin-top:1rem}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:.7rem}

.grid{display:grid;gap:clamp(16px,2.2vw,26px)}
.grid-12{grid-template-columns:repeat(12,minmax(0,1fr))}

.bento{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(14px,1.8vw,22px);
}

/* ---------- 4. 排版组件 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--gold);
}
.eyebrow::before{
  content:"";
  width:18px;
  height:1px;
  background:currentColor;
  opacity:.75;
}
.eyebrow--cyan{color:var(--cyan)}
.eyebrow--ink{color:var(--ink-2)}

.mono{font-family:var(--font-mono);font-size:.86em;letter-spacing:.04em}

.lede{
  max-width:62ch;
  font-size:clamp(1.02rem,1.5vw,1.18rem);
  line-height:1.72;
  color:rgba(29,27,22,.78);
}
.lede--light{color:rgba(244,239,228,.8)}

.prose{
  max-width:68ch;
  font-size:1.02rem;
  line-height:1.85;
  color:rgba(29,27,22,.82);
}
.prose > * + *{margin-top:1.05em}
.prose h2{margin-top:1.8em;font-size:clamp(1.3rem,2.2vw,1.7rem)}
.prose h3{margin-top:1.5em}
.prose ul,
.prose ol{padding-left:1.25rem;list-style:disc}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.4em}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.82rem 1.4rem;
  border:1px solid transparent;
  border-radius:var(--r-pill);
  font-size:.94rem;
  font-weight:700;
  line-height:1.2;
  letter-spacing:.01em;
  transition:transform var(--dur) var(--ease),
             background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),
             color var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}

.btn--primary{background:var(--cyan);color:#04211D}
.btn--primary:hover{background:#54efe5}

.btn--ink{background:var(--ink);color:var(--paper)}
.btn--ink:hover{background:var(--ink-2)}

.btn--ghost{
  border-color:var(--line-strong);
  color:var(--ink);
  background:transparent;
}
.btn--ghost:hover{border-color:var(--ink);background:rgba(11,43,38,.05)}

.btn--on-dark{border-color:rgba(244,239,228,.34);color:var(--paper)}
.btn--on-dark:hover{border-color:var(--cyan);color:var(--cyan)}

/* ---------- 6. 徽标与标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:.34rem;
  padding:.22rem .62rem;
  border:1px solid var(--line-strong);
  border-radius:var(--r-pill);
  font-family:var(--font-mono);
  font-size:.7rem;
  font-weight:500;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--ink);
  background:rgba(255,255,255,.5);
}
.badge--gold{border-color:rgba(216,166,87,.6);color:#7A5717;background:rgba(216,166,87,.15)}
.badge--cyan{border-color:rgba(57,224,214,.55);color:#0A5D57;background:rgba(57,224,214,.15)}
.badge--ember{border-color:rgba(227,91,61,.5);color:#9B3418;background:rgba(227,91,61,.12)}

.chip{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  padding:.34rem .78rem;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.04em;
  color:rgba(29,27,22,.72);
  background:transparent;
  transition:border-color var(--dur) var(--ease),
             color var(--dur) var(--ease),
             background-color var(--dur) var(--ease);
}
.chip:hover{border-color:var(--line-strong);color:var(--ink)}
.chip[aria-pressed="true"],
.chip.is-active{
  border-color:var(--ink);
  color:var(--paper);
  background:var(--ink);
}

/* ---------- 7. 卡片与面板 ---------- */
.card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(18px,2.4vw,28px);
  transition:transform var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease),
             border-color var(--dur) var(--ease);
}
.card:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-card);
}
.card--ink{
  background:var(--ink);
  color:var(--paper);
  border-color:rgba(216,166,87,.24);
}
.card--ink h2,
.card--ink h3{color:var(--paper)}

.panel{
  background:rgba(255,255,255,.55);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:clamp(18px,2.4vw,30px);
}
.panel--ink{
  background:var(--ink-2);
  color:rgba(244,239,228,.86);
  border-color:rgba(216,166,87,.22);
}
.panel--ink h2,
.panel--ink h3{color:var(--paper)}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb{padding-block:clamp(14px,2vw,22px)}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem;
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.06em;
  color:var(--mist);
}
.breadcrumb-item{display:inline-flex;align-items:center;gap:.45rem}
.breadcrumb-item + .breadcrumb-item::before{
  content:"/";
  color:rgba(143,163,160,.65);
}
.breadcrumb-link{color:rgba(29,27,22,.68);transition:color var(--dur) var(--ease)}
.breadcrumb-link:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.breadcrumb-current{color:var(--ink);font-weight:500}
.breadcrumb--dark .breadcrumb-list{color:rgba(143,163,160,.9)}
.breadcrumb--dark .breadcrumb-link{color:rgba(244,239,228,.72)}
.breadcrumb--dark .breadcrumb-link:hover{color:var(--cyan)}
.breadcrumb--dark .breadcrumb-current{color:var(--paper)}

/* ---------- 9. 图片容器 ---------- */
.media-frame{
  position:relative;
  display:grid;
  place-items:center;
  overflow:hidden;
  isolation:isolate;
  aspect-ratio:4 / 3;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:
    radial-gradient(120% 100% at 12% 0%, rgba(109,107,232,.18), transparent 62%),
    radial-gradient(90% 90% at 96% 100%, rgba(57,224,214,.2), transparent 58%),
    var(--paper-2);
}
.media-frame > img,
.media-frame > svg,
.media-frame > picture,
.media-frame > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media-frame--ink{
  border-color:rgba(216,166,87,.22);
  background:
    radial-gradient(120% 100% at 10% 0%, rgba(109,107,232,.36), transparent 62%),
    radial-gradient(95% 90% at 100% 100%, rgba(57,224,214,.22), transparent 60%),
    var(--ink-2);
}
.media-frame--wide{aspect-ratio:16 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}

.media-mark{
  padding:1rem;
  text-align:center;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:rgba(11,43,38,.36);
}
.media-frame--ink .media-mark{color:rgba(244,239,228,.42)}

.media-caption{
  position:absolute;
  inset:auto 0 0 0;
  z-index:2;
  padding:.65rem .85rem;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.07em;
  color:var(--paper);
  background:linear-gradient(transparent, rgba(11,43,38,.78));
}

/* ---------- 10. 手风琴 ---------- */
.accordion{border-top:1px solid var(--line)}
.accordion-item{border-bottom:1px solid var(--line)}
.accordion-heading{margin:0;font-size:inherit;font-weight:inherit;line-height:inherit}
.accordion-trigger{
  display:flex;
  width:100%;
  align-items:flex-start;
  justify-content:space-between;
  gap:1rem;
  padding:1.15rem 0;
  text-align:left;
  font-size:1.02rem;
  font-weight:700;
  color:var(--text);
  transition:color var(--dur) var(--ease);
}
.accordion-trigger:hover{color:var(--ink-2)}
.accordion-icon{
  position:relative;
  flex:0 0 auto;
  width:16px;
  height:16px;
  margin-top:.34rem;
}
.accordion-icon::before,
.accordion-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  border-radius:1px;
  transition:transform var(--dur) var(--ease),
             background-color var(--dur) var(--ease);
}
.accordion-icon::before{left:0;right:0;top:50%;height:1.5px;margin-top:-.75px}
.accordion-icon::after{top:0;bottom:0;left:50%;width:1.5px;margin-left:-.75px}
.accordion-trigger[aria-expanded="true"] .accordion-icon::before{background:var(--ember)}
.accordion-trigger[aria-expanded="true"] .accordion-icon::after{transform:scaleY(0)}

.accordion-panel{
  display:grid;
  grid-template-rows:0fr;
  visibility:hidden;
  transition:grid-template-rows var(--dur) var(--ease),
             visibility 0s linear var(--dur);
}
.accordion-item[data-open="true"] .accordion-panel{
  grid-template-rows:1fr;
  visibility:visible;
  transition:grid-template-rows var(--dur) var(--ease),
             visibility 0s;
}
.accordion-body{
  overflow:hidden;
  padding-bottom:1.25rem;
  max-width:64ch;
  font-size:.97rem;
  line-height:1.8;
  color:rgba(29,27,22,.78);
}

/* ---------- 11. 显现 ---------- */
[data-reveal].is-reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity 260ms var(--ease), transform 260ms var(--ease);
}
[data-reveal].is-reveal.is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 12. 跳过链接 ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:var(--gutter);
  z-index:999;
  padding:.62rem 1.05rem;
  border-radius:var(--r-pill);
  background:var(--cyan);
  color:#04211D;
  font-size:.88rem;
  font-weight:700;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 13. 站点页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:var(--ink);
  color:var(--paper);
  border-bottom:1px solid rgba(216,166,87,.26);
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--gold) 46%,rgba(109,107,232,.6) 72%,transparent);
  opacity:.9;
}

.header-inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(16px,3vw,40px);
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
  min-height:var(--header-h);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:.7rem;
  flex:0 0 auto;
  color:var(--paper);
  order:1;
}
.brand-glyph{
  position:relative;
  flex:0 0 auto;
  width:26px;
  height:26px;
  border:1.5px solid var(--cyan);
  border-radius:7px;
}
.brand-glyph::after{
  content:"";
  position:absolute;
  inset:7px;
  border-radius:2px;
  background:var(--gold);
}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-name{font-size:1.02rem;font-weight:800;letter-spacing:.01em}
.brand-sub{
  font-family:var(--font-mono);
  font-size:.62rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
}

.site-nav{
  display:flex;
  align-items:center;
  gap:clamp(14px,2.2vw,30px);
  margin-left:auto;
  order:3;
}

.nav-shortcuts{
  display:flex;
  align-items:center;
  gap:.4rem;
  padding-right:clamp(10px,1.6vw,22px);
  border-right:1px solid var(--line-light);
}
.shortcut-link{
  padding:.32rem .62rem;
  border:1px solid rgba(57,224,214,.4);
  border-radius:var(--r-pill);
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.06em;
  color:var(--cyan);
  transition:background-color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),
             color var(--dur) var(--ease);
}
.shortcut-link:hover{
  background:rgba(57,224,214,.14);
  border-color:var(--cyan);
  color:#8FF6EF;
}

.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.7vw,26px);
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:.42rem 0;
  font-size:.93rem;
  font-weight:500;
  color:rgba(244,239,228,.74);
  transition:color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:var(--gold);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease),
             background-color var(--dur) var(--ease);
}
.nav-link:hover{color:var(--paper)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--paper);font-weight:700}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--cyan)}

.nav-toggle{
  display:none;
  align-items:center;
  gap:.5rem;
  margin-left:auto;
  order:2;
  padding:.46rem .78rem;
  border:1px solid var(--line-light);
  border-radius:var(--r-pill);
  color:var(--paper);
  transition:border-color var(--dur) var(--ease),
             color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle-bars{
  display:inline-flex;
  flex-direction:column;
  gap:4px;
  width:16px;
}
.nav-toggle-bars span{
  display:block;
  height:1.5px;
  border-radius:2px;
  background:var(--cyan);
  transition:transform var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){
  transform:translateY(2.75px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){
  transform:translateY(-2.75px) rotate(-45deg);
}
.nav-toggle-label{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.14em;
  text-transform:uppercase;
}

/* ---------- 14. 站点页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(60px,9vw,120px);
  background:var(--ink);
  color:var(--paper);
  border-top:1px solid rgba(216,166,87,.26);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan) 28%,var(--gold) 62%,transparent);
  opacity:.55;
}

.footer-inner{
  display:grid;
  grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr) minmax(0,1.05fr);
  gap:clamp(28px,4vw,60px);
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:clamp(40px,6vw,76px) var(--gutter) 0;
}

.footer-name{font-size:1.12rem;font-weight:800;color:var(--paper)}
.footer-sub{
  margin-top:.35rem;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
}
.footer-statement{
  margin-top:1rem;
  max-width:34ch;
  font-size:.94rem;
  line-height:1.78;
  color:rgba(244,239,228,.72);
}

.footer-index-title{
  margin-bottom:.9rem;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--gold);
}
.footer-links{display:flex;flex-direction:column;gap:.12rem}
.footer-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  width:fit-content;
  padding:.4rem 0;
  font-size:.94rem;
  color:rgba(244,239,228,.76);
  transition:color var(--dur) var(--ease),
             transform var(--dur) var(--ease);
}
.footer-link:hover{color:var(--paper);transform:translateX(2px)}

.footer-link--vault{color:var(--cyan)}
.footer-link--vault::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(57,224,214,.16);
}
.footer-vault-tip{
  position:absolute;
  left:0;
  bottom:calc(100% + 7px);
  padding:.3rem .58rem;
  border-radius:6px;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.04em;
  white-space:nowrap;
  opacity:0;
  transform:translateY(4px);
  pointer-events:none;
  transition:opacity var(--dur) var(--ease),
             transform var(--dur) var(--ease);
}
.footer-link--vault:hover .footer-vault-tip,
.footer-link--vault:focus-visible .footer-vault-tip{
  opacity:1;
  transform:translateY(0);
}

.footer-meta{display:flex;flex-direction:column;gap:1.02rem}
.footer-meta-item{display:flex;flex-direction:column;gap:.2rem}
.footer-meta-label{
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
}
.footer-meta-value{
  font-size:.94rem;
  line-height:1.65;
  color:rgba(244,239,228,.9);
}
.meta-copy{
  margin-left:.4rem;
  padding:.1rem .42rem;
  border:1px solid var(--line-light);
  border-radius:var(--r-sm);
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.06em;
  color:var(--mist);
  vertical-align:middle;
  transition:border-color var(--dur) var(--ease),
             color var(--dur) var(--ease);
}
.meta-copy:hover{border-color:var(--cyan);color:var(--cyan)}
.footer-service-note{
  font-size:.8rem;
  line-height:1.72;
  color:rgba(244,239,228,.56);
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.8rem 1.6rem;
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  margin-top:clamp(32px,5vw,56px);
  padding:1.35rem var(--gutter);
  border-top:1px solid var(--line-light);
}
.footer-legal{display:flex;flex-wrap:wrap;gap:1.2rem}
.footer-legal-link{
  font-family:var(--font-mono);
  font-size:.73rem;
  letter-spacing:.05em;
  color:rgba(244,239,228,.64);
  transition:color var(--dur) var(--ease);
}
.footer-legal-link:hover{color:var(--cyan)}
.footer-copyright,
.footer-icp{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.05em;
  color:rgba(244,239,228,.48);
}

/* ---------- 15. 平板断点 ---------- */
@media (max-width:1024px){
  :root{--header-h:64px}

  .brand-sub{display:none}
  .nav-toggle{display:inline-flex}

  .site-nav{
    position:fixed;
    top:var(--header-h);
    right:0;
    bottom:0;
    z-index:110;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    width:min(340px,88vw);
    margin-left:0;
    padding:1.4rem var(--gutter) 2.2rem;
    background:var(--ink-2);
    border-left:1px solid rgba(216,166,87,.26);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateX(102%);
    transition:transform var(--dur) var(--ease),
               opacity var(--dur) var(--ease),
               visibility 0s linear var(--dur);
  }
  .site-nav[data-open="true"]{
    opacity:1;
    visibility:visible;
    transform:translateX(0);
    transition:transform var(--dur) var(--ease),
               opacity var(--dur) var(--ease),
               visibility 0s;
  }

  .nav-shortcuts{
    flex-direction:column;
    align-items:stretch;
    gap:.5rem;
    padding:0 0 1rem;
    margin-bottom:.6rem;
    border-right:0;
    border-bottom:1px solid var(--line-light);
  }
  .shortcut-link{text-align:center;padding:.6rem;font-size:.8rem}

  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{border-bottom:1px solid rgba(244,239,228,.08)}
  .nav-link{display:block;padding:.92rem .1rem;font-size:1.04rem}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{color:var(--cyan)}

  .bento{grid-template-columns:repeat(6,minmax(0,1fr))}
  .footer-inner{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer-brand{grid-column:1 / -1}
}

/* ---------- 16. 手机断点 ---------- */
@media (max-width:620px){
  body{font-size:16px}
  .bento{grid-template-columns:1fr}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}

  .footer-inner{grid-template-columns:1fr;padding-top:clamp(34px,8vw,48px)}
  .footer-statement{max-width:none}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:.7rem}
  .footer-legal{gap:.9rem}
  .btn{width:100%}
  .cluster .btn{width:auto}
}

/* ---------- 17. 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0s !important;
  }
  [data-reveal],
  [data-reveal].is-reveal{
    opacity:1 !important;
    transform:none !important;
  }
  .btn:hover,
  .card:hover,
  .footer-link:hover{transform:none}
}