/* =============================================================
   米兰赛事 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 /
   通用按钮 / 面包屑 / 正文容器 / 网格 / 基础组件
   ============================================================= */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}

/* ---------- 2. 设计变量 ---------- */
:root{
  --paper:#F4EFE6;
  --paper-bright:#FBF8F2;
  --ink:#14100E;
  --panel:#1E1A17;
  --milan:#B41F2E;
  --ember:#E4572E;
  --grass:#0E3B2E;
  --cyan:#3FD6C8;
  --gold:#E3B341;
  --rule:#C9BFAE;
  --rule-soft:rgba(201,191,174,.55);
  --muted:#5A524B;
  --focus:#B41F2E;
  --shell:1240px;
  --gutter:clamp(18px,4vw,44px);
  --gap-section:clamp(88px,11vw,128px);
  --radius-pill:999px;
  --radius-card:6px;
  --shadow-1:0 1px 2px rgba(20,16,14,.06);
  --shadow-2:0 6px 18px rgba(20,16,14,.12);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,"Noto Sans SC",monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- 3. 基础排版 ---------- */
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:.01em;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  position:relative;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.55;
  background-image:radial-gradient(rgba(20,16,14,.06) 1px,transparent 1px);
  background-size:3px 3px;
}
main{display:block;flex:1 1 auto;position:relative;z-index:1}
#main-content{scroll-margin-top:96px}
h1,h2,h3,h4,h5,h6{line-height:.98;letter-spacing:-.02em;font-weight:900}
.display{font-size:clamp(40px,7vw,112px);font-weight:900;line-height:.95;letter-spacing:-.02em}
p{max-width:62ch}
strong,b{font-weight:900}
em{font-style:normal;color:var(--milan);font-weight:700}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;letter-spacing:.01em;padding-inline:.07em}
a.num,b.num{padding-inline:0}
.serif{font-family:"Noto Serif SC","Songti SC",Georgia,serif;font-size:17px;line-height:1.9}
::selection{background:var(--milan);color:var(--paper)}

:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:3px}
.site-nav :focus-visible,.site-footer :focus-visible,.data-band :focus-visible,.btn-primary:focus-visible,.nav-toggle:focus-visible{outline-color:var(--cyan)}

/* ---------- 4. 跳转与容器 ---------- */
.skip-link{
  position:absolute;left:14px;top:-70px;z-index:200;
  display:inline-flex;align-items:center;
  padding:11px 20px;border-radius:var(--radius-pill);
  background:var(--ink);color:var(--paper);
  font-size:14px;font-weight:700;letter-spacing:.02em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:14px}

.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.shell-narrow{max-width:900px}
.section{padding-block:var(--gap-section);position:relative}
.section-tight{padding-block:clamp(48px,6vw,72px)}
.rule-top{border-top:.5px solid var(--rule)}

/* ---------- 5. 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  isolation:isolate;
}
.site-header::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:rgba(244,239,230,0);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header[data-scrolled]::before{
  background:rgba(244,239,230,.94);
  border-bottom-color:var(--rule-soft);
  box-shadow:0 1px 0 rgba(20,16,14,.04);
}
.scroll-progress{
  position:absolute;left:0;bottom:0;height:2px;width:0;z-index:3;
  background:linear-gradient(90deg,var(--milan),var(--ember) 58%,var(--cyan));
  transition:width .12s linear;
}
.header-bar{
  position:relative;z-index:2;
  display:flex;align-items:center;gap:clamp(10px,1.6vw,20px);
  padding-block:14px;
}
.brand{display:inline-flex;align-items:center;gap:11px;min-width:0;flex:0 1 auto}
.brand-mark{
  position:relative;flex:none;width:14px;height:14px;background:var(--milan);
}
.brand-mark::after{
  content:"";position:absolute;left:3px;right:3px;top:6px;height:2px;
  background:var(--cyan);transform:rotate(-38deg);
}
.brand-copy{display:flex;flex-direction:column;line-height:1.08;min-width:0}
.brand-name{font-size:19px;font-weight:900;letter-spacing:.05em;white-space:nowrap}
.brand-note{
  font-size:11.5px;color:var(--muted);letter-spacing:.02em;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis;
}
.stamp{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border:.5px solid var(--rule);border-radius:var(--radius-pill);
  background:rgba(255,255,255,.35);
  font-size:12px;color:var(--muted);letter-spacing:.02em;
  white-space:nowrap;cursor:help;
}
.stamp-text{display:inline-block}
.stamp-dot{
  flex:none;width:6px;height:6px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 0 3px rgba(63,214,200,.18);
  animation:stamp-pulse 2.6s var(--ease) infinite;
}
@keyframes stamp-pulse{0%,100%{opacity:1}50%{opacity:.35}}
.stamp::after{
  content:attr(data-note);
  position:absolute;top:calc(100% + 10px);left:0;z-index:6;
  width:max-content;max-width:280px;text-align:left;white-space:normal;
  padding:10px 13px;border-radius:4px;
  background:var(--panel);color:var(--paper);
  font-size:12px;line-height:1.65;
  opacity:0;visibility:hidden;transform:translateY(-4px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
}
.stamp:hover::after,.stamp:focus-visible::after{opacity:1;visibility:visible;transform:none}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}

/* 胶囊导航（桌面基准） */
.site-nav{position:relative;z-index:2;order:2}
.nav-list{
  display:flex;align-items:center;gap:2px;
  padding:5px;border-radius:var(--radius-pill);
  background:var(--panel);border:1px solid rgba(201,191,174,.18);
  box-shadow:0 6px 18px rgba(20,16,14,.16);
}
.nav-list > li{display:flex}
.nav-link{
  display:inline-flex;align-items:center;gap:.45em;white-space:nowrap;
  padding:9px 15px;border-radius:var(--radius-pill);
  color:rgba(244,239,230,.8);
  font-size:14.5px;font-weight:700;letter-spacing:.02em;
  transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),padding .25s var(--ease);
}
.nav-link .nav-index{font-size:10.5px;font-weight:500;color:rgba(63,214,200,.75)}
.nav-link:hover{background:rgba(244,239,230,.09);color:#fff}
.nav-link[aria-current="page"]{
  color:#fff;background:rgba(180,31,46,.16);
  box-shadow:inset 0 0 0 1.5px var(--milan);
}
.nav-meta{
  display:none;
  font-size:12px;color:rgba(244,239,230,.55);letter-spacing:.02em;
}
.nav-meta .num{color:var(--cyan)}

.nav-toggle{
  display:none;
  align-items:center;gap:9px;
  padding:11px 18px;border-radius:var(--radius-pill);
  background:var(--ink);color:var(--paper);
  font-size:14px;font-weight:700;letter-spacing:.04em;
  box-shadow:0 10px 26px rgba(20,16,14,.28);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.nav-toggle:hover{background:var(--milan)}
.nav-toggle-icon{position:relative;flex:none;width:16px;height:10px}
.nav-toggle-icon::before,.nav-toggle-icon::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:currentColor;
  transition:transform .24s var(--ease);
}
.nav-toggle-icon::before{top:0}
.nav-toggle-icon::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before{transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after{transform:translateY(-4px) rotate(-45deg)}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;
  margin-top:auto;
  background:var(--ink);color:rgba(244,239,230,.78);
  border-top:4px solid var(--milan);
  font-size:14.5px;line-height:1.72;
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(63,214,200,.04) 0 1px,transparent 1px 10px);
}
.footer-body{position:relative;z-index:1;padding-top:clamp(46px,6vw,72px)}
.footer-lead{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:14px 28px;
  padding-bottom:26px;border-bottom:1px solid rgba(201,191,174,.16);
}
.brand-footer .brand-name{color:var(--paper)}
.brand-footer .brand-note{color:rgba(244,239,230,.55)}
.footer-signature{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.02em;
  color:rgba(244,239,230,.6);max-width:none;
}
.footer-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(24px,3vw,48px);padding-block:clamp(32px,4vw,50px);
}
.footer-col{min-width:0}
.footer-title{
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:14px;line-height:1;
}
.footer-list{display:flex;flex-direction:column;gap:9px;font-size:14.5px}
.footer-list a{
  display:inline-block;padding-bottom:1px;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-list a:hover{color:var(--paper);border-bottom-color:var(--ember)}
.footer-contact{font-size:13.5px;line-height:1.72;color:rgba(244,239,230,.7)}
.footer-contact .num{color:var(--paper)}
.footer-base{
  position:relative;z-index:1;
  margin-top:clamp(20px,3vw,34px);
  background:var(--grass);color:rgba(244,239,230,.72);
  padding-block:18px;
}
.footer-base::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(63,214,200,.06) 0 1px,transparent 1px 9px);
}
.footer-base-row{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;justify-content:space-between;
  gap:8px 26px;font-size:12.5px;letter-spacing:.02em;
}
.footer-base-row .num{color:var(--cyan)}
.footer-legal,.footer-note{max-width:none}

/* ---------- 7. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55em;
  padding:12px 22px;border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1;letter-spacing:.02em;
  transition:background .2s var(--ease),color .2s var(--ease),
             border-color .2s var(--ease),transform .2s var(--ease);
}
.btn::after{
  content:"→";font-family:var(--font-mono);font-size:.95em;
  transition:transform .2s var(--ease);
}
.btn:hover::after{transform:translateX(4px)}
.btn-primary{background:var(--milan);color:var(--paper)}
.btn-primary:hover{background:var(--ember)}
.btn-ghost{background:transparent;border-color:var(--rule);color:var(--ink)}
.btn-ghost:hover{border-color:var(--milan);color:var(--milan)}
.btn-dark{background:var(--panel);color:var(--paper);border-color:rgba(201,191,174,.25)}
.btn-dark:hover{background:var(--grass)}
.btn-sm{padding:9px 16px;font-size:13.5px}
.btn-block{display:flex;width:100%}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb{font-size:13px;color:var(--muted);letter-spacing:.02em}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center}
.breadcrumb li{display:flex;align-items:center}
.breadcrumb li + li::before{content:"/";margin-inline:.6em;color:var(--rule);font-family:var(--font-mono)}
.breadcrumb a{border-bottom:1px solid transparent;transition:.2s var(--ease)}
.breadcrumb a:hover{color:var(--ink);border-bottom-color:var(--ember)}
.breadcrumb [aria-current="page"]{color:var(--ink);font-weight:700}

/* ---------- 9. 章节结构 ---------- */
.chapter{
  display:grid;grid-template-columns:120px minmax(0,1fr);
  gap:clamp(20px,3vw,44px);
  padding-block:clamp(44px,5.5vw,76px);
  border-top:.5px solid var(--rule);
}
.chapter:first-of-type{border-top:0}
.chapter-index{
  font-family:var(--font-mono);font-weight:700;line-height:.9;
  font-size:clamp(38px,4.4vw,64px);letter-spacing:-.03em;color:var(--milan);
}
.chapter-body{min-width:0}
.chapter-body > * + *{margin-top:18px}
.eyebrow{
  font-family:var(--font-mono);font-size:11.5px;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;color:var(--muted);
}
.section-title{font-size:clamp(28px,3.6vw,48px);max-width:22ch}
.lede{font-size:clamp(17px,1.35vw,19px);line-height:1.85;color:var(--muted);max-width:62ch}
.prose{max-width:62ch}
.prose > * + *{margin-top:18px}

/* ---------- 10. 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2vw,28px)}
.grid-7-5{grid-template-columns:7fr 5fr}
.grid-8-4{grid-template-columns:8fr 4fr}
.grid-5-7{grid-template-columns:5fr 7fr}
.grid-cards{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.card-rail{
  display:flex;gap:16px;overflow-x:auto;padding-bottom:14px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.card-rail > *{flex:0 0 clamp(220px,26vw,300px);scroll-snap-align:start}
.card-rail::-webkit-scrollbar{height:4px}
.card-rail::-webkit-scrollbar-track{background:var(--rule-soft)}
.card-rail::-webkit-scrollbar-thumb{background:var(--milan)}

/* ---------- 11. 卡片与数据单元 ---------- */
.card{
  background:var(--paper-bright);
  border:.5px solid var(--rule);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:20px 22px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.card:hover{border-color:var(--milan);box-shadow:var(--shadow-2)}
.data-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--paper-bright);
  border:.5px solid var(--rule);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:20px 22px 18px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease);
}
.data-card:hover{border-color:var(--milan);box-shadow:var(--shadow-2)}
.data-card:hover .data-arrow{transform:translateX(4px)}
.data-label{font-size:12.5px;letter-spacing:.06em;color:var(--muted)}
.data-value{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(30px,4vw,44px);font-weight:700;line-height:1;
  letter-spacing:-.02em;color:var(--milan);
}
.data-value small{font-size:.44em;font-weight:500;color:var(--muted);margin-left:.3em}
.data-unit{font-size:13px;color:var(--muted);font-family:var(--font-mono)}
.timestamp{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
  color:var(--muted);
}
.data-arrow{
  margin-top:auto;font-family:var(--font-mono);font-size:14px;color:var(--milan);
  transition:transform .25s var(--ease);
}
.on-dark{
  background:var(--panel);border-color:rgba(201,191,174,.2);color:rgba(244,239,230,.82);
}
.on-dark .data-value{color:var(--cyan)}
.on-dark .data-label,.on-dark .timestamp{color:rgba(244,239,230,.55)}
.on-dark .data-arrow{color:var(--gold)}
.on-dark:hover{border-color:var(--cyan)}
.badge{
  display:inline-flex;align-items:center;gap:.4em;
  padding:4px 10px;border-radius:var(--radius-pill);
  border:.5px solid var(--rule);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;color:var(--muted);
}
.badge--gold{border-color:var(--gold);color:#8a6a12}
.badge--red{border-color:var(--milan);color:var(--milan)}

/* ---------- 12. 整幅数据带 ---------- */
.data-band{
  position:relative;
  background:var(--grass);color:var(--paper);
  padding-block:clamp(56px,7vw,88px);
}
.data-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(63,214,200,.055) 0 1px,transparent 1px 9px);
}
.data-band > *{position:relative;z-index:1}
.data-band .lede,.data-band .data-label,.data-band .timestamp{color:rgba(244,239,230,.62)}
.data-band .data-value{color:var(--cyan)}
.data-band .data-card{background:rgba(244,239,230,.05);border-color:rgba(201,191,174,.22);box-shadow:none}
.data-band .data-card:hover{border-color:var(--cyan);background:rgba(244,239,230,.08)}

/* ---------- 13. 图片容器 ---------- */
.media-frame{
  position:relative;overflow:hidden;
  border:.5px solid var(--rule);border-radius:var(--radius-card);
  background:var(--panel);aspect-ratio:16/9;
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:1;
  background:
    linear-gradient(180deg,rgba(14,59,46,0) 42%,rgba(14,59,46,.6) 100%),
    repeating-linear-gradient(0deg,rgba(63,214,200,.06) 0 1px,transparent 1px 4px);
}
.media-frame figcaption{
  position:absolute;left:14px;bottom:12px;z-index:2;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;
  color:rgba(244,239,230,.9);max-width:calc(100% - 28px);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame--plain::after{background:none}

/* ---------- 14. 筛选与切换 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:.45em;
  padding:8px 16px;border-radius:var(--radius-pill);
  border:.5px solid var(--rule);background:transparent;
  font-size:14px;font-weight:700;letter-spacing:.02em;color:var(--muted);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{border-color:var(--milan);color:var(--ink)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.data-band .chip{border-color:rgba(201,191,174,.35);color:rgba(244,239,230,.75)}
.data-band .chip:hover{border-color:var(--cyan);color:#fff}
.data-band .chip[aria-pressed="true"]{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.filter-count{font-family:var(--font-mono);font-size:12.5px;color:var(--muted)}

/* ---------- 15. 表格 ---------- */
.table-basic{font-size:14.5px}
.table-basic th,.table-basic td{padding:11px 14px;text-align:left;border-bottom:.5px solid var(--rule)}
.table-basic thead th{
  background:var(--panel);color:rgba(244,239,230,.8);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;font-weight:500;
}
.table-basic tbody tr:hover{background:rgba(201,191,174,.18)}
.table-basic td.num{color:var(--milan)}

/* ---------- 16. 动效协议 ---------- */
html[data-js="on"] [data-reveal]{
  opacity:0;transform:translateY(8px);
  transition:opacity .32s var(--ease),transform .32s var(--ease);
}
html[data-js="on"] [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 17. 响应式 ---------- */
@media (min-width:960px){
  .site-header::before{backdrop-filter:saturate(140%) blur(10px);-webkit-backdrop-filter:saturate(140%) blur(10px)}
  .stamp{margin-left:auto}
  .header-actions{order:3;margin-left:0}
  .header-bar{padding-block:16px}
  .site-header[data-scrolled] .header-bar{padding-block:9px}
  .site-header[data-scrolled] .nav-link{padding:7px 13px;font-size:13.5px}
  .site-header[data-scrolled] .brand-note{opacity:.75}
}

@media (max-width:959px){
  .header-bar{gap:12px;padding-block:12px}
  .stamp{display:none}
  .brand-note{font-size:11px}
  .nav-toggle{
    display:inline-flex;position:fixed;left:50%;bottom:20px;transform:translateX(-50%);
    z-index:61;
  }
  .nav-toggle:active{transform:translateX(-50%) scale(.97)}
  .site-nav{
    position:fixed;left:50%;bottom:88px;z-index:60;
    width:min(440px,calc(100vw - 28px));
    padding:12px;border-radius:14px;
    background:var(--panel);border:1px solid rgba(201,191,174,.22);
    box-shadow:0 20px 44px rgba(20,16,14,.4);
    opacity:0;visibility:hidden;transform:translate(-50%,8px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
  }
  .site-nav[data-open]{opacity:1;visibility:visible;transform:translate(-50%,0)}
  .nav-list{
    flex-direction:column;align-items:stretch;gap:2px;
    padding:0;background:transparent;border:0;box-shadow:none;
  }
  .nav-link{width:100%;padding:12px 14px;border-radius:8px;font-size:15.5px}
  .nav-meta{
    display:flex;gap:.35em;
    margin-top:10px;padding:12px 14px 4px;
    border-top:1px solid rgba(201,191,174,.16);
  }
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .grid-7-5,.grid-8-4,.grid-5-7{grid-template-columns:1fr}
  .card-rail > *{flex:0 0 min(76vw,300px)}
}

@media (max-width:620px){
  body{font-size:16px;line-height:1.8}
  .brand-name{font-size:17px}
  .brand-note{display:none}
  .btn{padding:11px 18px;font-size:14px}
  .btn-sm{padding:9px 14px;font-size:13px}
  .chapter{grid-template-columns:1fr;gap:14px}
  .chapter-index{font-size:44px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-base-row{justify-content:flex-start}
  .footer-signature{font-size:11.5px}
}

@media (max-width:400px){
  .header-actions .btn-primary{display:none}
}

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