:root{
  --paper:#F7F3EA;
  --paper-2:#EFE7D6;
  --ink:#16130F;
  --ink-soft:#2A241C;
  --gold:#C9A227;
  --gold-deep:#9A7A15;
  --gold-pale:#EBD9A0;
  --cinnabar:#B23A2E;
  --celadon:#6E8B74;
  --stone:#8A8578;
  --clay:#B9704A;
  --text-soft:#4A4238;
  --rail-w:248px;
  --bar-h:60px;
  --page-max:1280px;
  --gutter:clamp(18px,4vw,56px);
  --radius:14px;
  --radius-sm:8px;
  --shadow-1:0 1px 0 rgba(22,19,15,.05),0 10px 30px -18px rgba(22,19,15,.35);
  --shadow-2:0 2px 0 rgba(22,19,15,.06),0 18px 44px -22px rgba(22,19,15,.48);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular","Menlo","Consolas","Liberation Mono",monospace;
}

/* ===== reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,ol,ul,dl,dd,address,hr{margin:0}
ol,ul{padding:0;list-style:none}
img,svg,picture{display:block;max-width:100%}
img{height:auto}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--gold-deep);outline-offset:3px;border-radius:3px}

/* ===== 中文排版基座 ===== */
body{
  min-height:100vh;
  background-color:var(--paper);
  background-image:
    radial-gradient(circle at 10% -12%,rgba(201,162,39,.12),transparent 42%),
    radial-gradient(circle at 104% 6%,rgba(110,139,116,.11),transparent 38%);
  background-repeat:no-repeat;
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:clamp(16px,1.05vw,17.5px);
  line-height:1.85;
  letter-spacing:.004em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;letter-spacing:-.02em;line-height:1.08;text-wrap:balance}
h1{font-size:clamp(2.8rem,7vw,6.2rem);line-height:1.05}
h2{font-size:clamp(1.85rem,3.6vw,2.8rem)}
h3{font-size:clamp(1.25rem,2vw,1.5rem);line-height:1.25}
p{text-wrap:pretty}
.num,[data-count]{font-variant-numeric:tabular-nums}
#main-content{scroll-margin-top:calc(var(--bar-h) + 16px)}

/* ===== 布局容器 ===== */
.container{width:100%;max-width:var(--page-max);margin-inline:auto;padding-inline:var(--gutter)}
.container--narrow{max-width:820px}
.section{padding-block:clamp(36px,5.5vw,78px)}
.section--tight{padding-block:clamp(20px,2.6vw,36px)}
.section--narrow{max-width:760px}
.section--paper2{background:var(--paper-2)}
.rule{border:0;border-top:2px solid var(--ink);margin-block:clamp(22px,3.6vw,44px)}
.rule--thin{border-top-width:1px;border-top-color:rgba(22,19,15,.18)}
.rule--gold{border-top-color:var(--gold)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-num);font-size:12px;letter-spacing:.18em;color:var(--gold-deep)}
.eyebrow::after{content:"";width:44px;height:1px;background:var(--gold)}
.seal{display:inline-grid;place-items:center;width:52px;height:52px;border:1.5px solid var(--gold);border-radius:50%;color:var(--gold-deep);font-weight:900;font-size:15px;background:rgba(201,162,39,.08)}
.prose{max-width:38em}
.prose p{margin-bottom:1.1em;color:var(--text-soft)}
.prose p:last-child{margin-bottom:0}
.prose a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--gold);text-decoration-thickness:2px;text-underline-offset:3px}
.prose ul,.prose ol{display:flex;flex-direction:column;gap:.5em;margin:0 0 1.1em;max-width:38em}
.prose ul li{position:relative;padding-left:1.4em;color:var(--text-soft)}
.prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:2px;background:var(--gold)}
.note{font-size:14.5px;line-height:1.8;color:var(--text-soft);background:var(--paper-2);border-left:3px solid var(--clay);padding:12px 16px;border-radius:0 var(--radius-sm) var(--radius-sm) 0}
.link-more{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:14px;color:var(--ink);border-bottom:2px solid var(--gold);padding-bottom:2px;transition:border-color .2s ease,color .2s ease}
.link-more:hover{border-bottom-color:var(--ink);color:var(--gold-deep)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-block:18px;font-size:13px;color:var(--stone);letter-spacing:.04em}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"／";color:var(--gold)}
.breadcrumb a{border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease}
.breadcrumb a:hover{color:var(--ink);border-bottom-color:var(--gold)}
.breadcrumb [aria-current="page"]{color:var(--ink);font-weight:700}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 22px;border:1px solid transparent;border-radius:999px;font-size:15px;font-weight:800;line-height:1.2;letter-spacing:.02em;cursor:pointer;transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}
.btn:hover{transform:translateY(-2px)}
.btn--gold{background:var(--gold);color:var(--ink);border-color:var(--gold-deep)}
.btn--gold:hover{background:var(--gold-deep);color:var(--paper)}
.btn--ink{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn--ink:hover{background:var(--gold-deep);border-color:var(--gold-deep);color:var(--paper)}
.btn--ghost{background:transparent;color:var(--ink);border-color:rgba(22,19,15,.28)}
.btn--ghost:hover{background:var(--paper-2);border-color:var(--gold)}
.btn--sm{padding:8px 16px;font-size:13.5px}
.btn__arrow{font-family:var(--font-num);font-size:13px}

/* ===== 徽标与状态 ===== */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.06em;line-height:1.6}
.badge--gold{background:var(--gold-pale);color:var(--ink)}
.badge--red{background:var(--cinnabar);color:#FFF6F4}
.badge--green{background:var(--celadon);color:#F4F8F4}
.badge--stone{background:rgba(138,133,120,.2);color:var(--text-soft)}

/* ===== 卡片矩阵 ===== */
.card-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1080px){.card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.card{position:relative;display:flex;flex-direction:column;gap:10px;padding:22px;background:var(--paper);border:1px solid rgba(22,19,15,.12);border-left:4px solid var(--gold);border-radius:var(--radius);box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);background:#FFFDF8}
.card__idx{font-family:var(--font-num);font-size:12px;letter-spacing:.08em;color:var(--gold-deep)}
.card__title{font-size:1.15rem;font-weight:900;line-height:1.3}
.card__desc{font-size:15px;line-height:1.75;color:var(--text-soft)}

/* ===== 清单勾选 ===== */
.checklist{border:1px solid rgba(22,19,15,.14);border-radius:var(--radius);overflow:hidden;background:var(--paper)}
.checklist__count{margin:0;padding:14px 16px;background:var(--ink);color:var(--paper-2);font-size:13px;letter-spacing:.06em}
.checklist__count strong,[data-checklist-count]{font-family:var(--font-num);font-size:17px;color:var(--gold)}
.check-item{display:flex;align-items:flex-start;gap:12px;width:100%;padding:13px 16px;text-align:left;border-bottom:1px solid rgba(22,19,15,.1);cursor:pointer;transition:background-color .2s ease}
.check-item:last-child{border-bottom:0}
.check-item:hover{background:var(--paper-2)}
.check-item[aria-pressed="true"]{background:var(--gold-pale)}
.check-item__box{position:relative;flex:0 0 auto;width:20px;height:20px;margin-top:4px;border:1.5px solid var(--stone);border-radius:4px;transition:background-color .2s ease,border-color .2s ease}
.check-item__box::after{content:"";position:absolute;left:6px;top:1px;width:6px;height:11px;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:rotate(45deg) scale(0);transition:transform .24s ease}
.check-item[aria-pressed="true"] .check-item__box{background:var(--gold);border-color:var(--gold-deep)}
.check-item[aria-pressed="true"] .check-item__box::after{transform:rotate(45deg) scale(1)}
.check-item__text{font-size:15px;line-height:1.7}
.check-item[aria-pressed="true"] .check-item__text{font-weight:700}

/* ===== 页内目录 ===== */
.toc{display:flex;flex-direction:column;gap:4px}
.toc a{display:flex;gap:10px;padding:8px 10px;font-size:14px;line-height:1.6;border-left:2px solid transparent;border-radius:0 var(--radius-sm) var(--radius-sm) 0;transition:background-color .2s ease,border-color .2s ease}
.toc a:hover{background:var(--paper-2)}
.toc a[aria-current="true"]{background:var(--paper-2);border-left-color:var(--gold);font-weight:800}

/* ===== 数字图形 ===== */
.stat{display:flex;flex-direction:column;gap:4px}
.stat__num{font-family:var(--font-num);font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;line-height:1.1;letter-spacing:.02em;color:var(--gold-deep)}
.stat__label{font-size:13px;letter-spacing:.08em;color:var(--stone)}

/* ===== 图片容器 ===== */
.figure{display:block}
.figure__frame{position:relative;overflow:hidden;border:1px solid rgba(22,19,15,.1);border-radius:var(--radius);background:var(--paper-2)}
.figure__frame>img,.figure__frame>svg{width:100%;height:100%;object-fit:cover;aspect-ratio:var(--ratio,16/10)}
.figure__frame--wide{--ratio:21/9}
.figure__frame--tall{--ratio:3/4}
.figure__frame--square{--ratio:1/1}
.figure__frame--grid{--ratio:16/9;background-image:linear-gradient(rgba(22,19,15,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(22,19,15,.08) 1px,transparent 1px);background-size:28px 28px,28px 28px}
.figure__caption{margin-top:10px;font-size:13px;line-height:1.7;color:var(--stone)}

/* ===== 数据表 ===== */
.table-wrap{overflow-x:auto;border:1px solid rgba(22,19,15,.14);border-radius:var(--radius)}
table.data{width:100%;min-width:520px;font-size:15px}
table.data th,table.data td{padding:12px 16px;text-align:left;border-bottom:1px solid rgba(22,19,15,.1)}
table.data thead th{background:var(--ink);color:var(--paper);font-size:13px;font-weight:800;letter-spacing:.08em}
table.data tbody tr:nth-child(even){background:var(--paper-2)}
table.data tbody tr:last-child td{border-bottom:0}
table.data td:first-child{font-family:var(--font-num);color:var(--gold-deep);letter-spacing:.06em}

/* ===== 头部 ===== */
.skip-link{position:fixed;top:0;left:50%;z-index:120;padding:10px 18px;background:var(--gold);color:var(--ink);font-weight:800;font-size:14px;border-radius:0 0 8px 8px;transform:translate(-50%,-140%);transition:transform .2s ease}
.skip-link:focus,.skip-link:focus-visible{transform:translate(-50%,0)}

.site-header{
  position:sticky;top:0;z-index:90;
  background:var(--ink);
  color:var(--paper);
  border-bottom:1px solid rgba(201,162,39,.34);
}
.header-bar{display:flex;align-items:center;justify-content:space-between;gap:14px;height:var(--bar-h);max-width:var(--page-max);margin-inline:auto;padding-inline:var(--gutter)}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand__seal{flex:0 0 auto;display:grid;place-items:center;width:34px;height:34px;border:1.5px solid var(--gold);border-radius:50%;color:var(--gold);font-size:12px;font-weight:900;line-height:1;background:radial-gradient(circle at 50% 32%,rgba(201,162,39,.24),transparent 72%)}
.brand__text{display:flex;flex-direction:column;min-width:0}
.brand__name{font-size:15px;font-weight:900;letter-spacing:-.01em;color:var(--paper)}
.brand__sub{font-size:10.5px;letter-spacing:.14em;color:var(--stone)}

.nav-toggle{display:inline-flex;align-items:center;gap:9px;padding:8px 13px;border:1px solid rgba(201,162,39,.5);border-radius:999px;color:var(--gold-pale);font-size:13px;font-weight:700;letter-spacing:.1em;cursor:pointer;transition:background-color .2s ease,color .2s ease}
.nav-toggle:hover{background:rgba(201,162,39,.16)}
.nav-toggle__box{display:grid;gap:4px;width:18px}
.nav-toggle__box span{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .24s ease,opacity .24s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__box span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.site-nav{
  position:fixed;top:0;left:0;bottom:0;z-index:88;
  width:min(86vw,340px);
  display:flex;flex-direction:column;
  padding:calc(var(--bar-h) + 24px) 22px 26px;
  background:var(--ink);color:var(--paper);
  border-right:1px solid rgba(201,162,39,.34);
  transform:translateX(-102%);
  transition:transform .34s cubic-bezier(.22,.68,.24,1);
  overflow-y:auto;overscroll-behavior:contain;
}
.site-nav[data-open]{transform:translateX(0)}
.site-nav__caption{margin-bottom:12px;font-family:var(--font-num);font-size:11px;letter-spacing:.2em;color:var(--stone)}
.site-nav__list{display:flex;flex-direction:column}
.site-nav__item{border-bottom:1px solid rgba(247,243,234,.12)}
.site-nav__link{display:flex;align-items:baseline;gap:14px;padding:15px 4px;color:var(--paper-2);font-size:17px;font-weight:700;line-height:1.4;transition:color .2s ease,padding-left .2s ease}
.site-nav__link:hover{color:var(--gold);padding-left:8px}
.site-nav__link[aria-current="page"]{color:var(--gold)}
.site-nav__link[aria-current="page"] .site-nav__label{text-decoration:underline;text-decoration-color:var(--gold);text-decoration-thickness:2px;text-underline-offset:5px}
.site-nav__idx{flex:0 0 auto;font-family:var(--font-num);font-size:12px;letter-spacing:.08em;color:var(--gold-deep)}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--gold)}
.site-nav__label{min-width:0}

.quick-links{margin-top:22px;padding-top:20px;border-top:1px solid rgba(247,243,234,.14);display:flex;flex-direction:column;gap:8px}
.quick-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid rgba(201,162,39,.42);border-radius:10px;color:var(--gold-pale);font-size:14px;font-weight:700;transition:background-color .2s ease,color .2s ease,transform .2s ease}
.quick-link:hover{background:var(--gold);color:var(--ink);border-color:var(--gold);transform:translateX(2px)}
.quick-link__idx{font-family:var(--font-num);font-size:11px;letter-spacing:.08em;color:var(--gold)}
.quick-link:hover .quick-link__idx{color:var(--ink)}
.site-nav__foot{margin-top:auto;padding-top:20px;border-top:1px solid rgba(247,243,234,.14)}
.site-nav__note{font-size:12px;line-height:1.8;letter-spacing:.06em;color:var(--stone)}

.nav-scrim{position:fixed;inset:0;z-index:85;display:block;background:rgba(22,19,15,.6);opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;cursor:pointer}
html[data-nav-open] .nav-scrim{opacity:1;visibility:visible}
@media (max-width:1079px){
  html[data-nav-open],html[data-nav-open] body{overflow:hidden}
}

.scroll-meter{position:fixed;top:0;left:0;right:0;height:3px;z-index:100;pointer-events:none;background:var(--gold);transform:scaleX(var(--scroll-progress,0));transform-origin:0 50%;transition:transform .1s linear}

.to-top{position:fixed;right:20px;bottom:20px;z-index:65;display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border:1px solid var(--gold-deep);border-radius:999px;background:var(--gold);color:var(--ink);font-size:13px;font-weight:800;letter-spacing:.08em;cursor:pointer;box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background-color .2s ease}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--gold-deep);color:var(--paper)}

/* ===== 页脚 ===== */
.site-footer{margin-top:clamp(44px,7vw,110px);background:var(--ink);color:var(--paper-2);padding:clamp(34px,5.5vw,68px) var(--gutter) 0}
.footer-grid{max-width:var(--page-max);margin-inline:auto;display:grid;grid-template-columns:1fr;gap:clamp(20px,3.5vw,52px);padding-bottom:clamp(24px,3.5vw,46px);border-bottom:1px solid rgba(247,243,234,.16)}
.footer-panel{border-top:1px solid rgba(247,243,234,.14)}
.footer-panel:last-child{border-bottom:1px solid rgba(247,243,234,.14)}
.footer-panel>summary{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 0;font-size:15px;font-weight:800;color:var(--paper);cursor:pointer;list-style:none}
.footer-panel>summary::-webkit-details-marker{display:none}
.footer-panel>summary::after{content:"";flex:0 0 auto;width:9px;height:9px;border-right:1.6px solid var(--gold);border-bottom:1.6px solid var(--gold);transform:rotate(45deg);transition:transform .22s ease}
.footer-panel[open]>summary::after{transform:rotate(-135deg)}
.footer-panel__body{padding-bottom:16px}
.footer-brand{font-size:19px;font-weight:900;letter-spacing:-.01em;color:var(--paper);margin-bottom:10px}
.footer-line{max-width:34em;font-size:14.5px;line-height:1.8;color:#C9C2B4}
.footer-links{display:flex;flex-direction:column;gap:9px;font-size:14.5px}
.footer-links a{color:var(--paper-2);border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.footer-links a:hover{color:var(--gold);border-bottom-color:var(--gold)}
.footer-links--legal{margin-top:16px;padding-top:14px;border-top:1px solid rgba(247,243,234,.14);font-size:13.5px}
.footer-links--legal a{color:var(--stone)}
.footer-links--legal a:hover{color:var(--gold)}
.footer-contact{font-style:normal;display:flex;flex-direction:column;gap:11px;font-size:14.5px}
.footer-contact__row{display:flex;flex-wrap:wrap;gap:12px}
.footer-contact__k{flex:0 0 4.6em;font-size:13px;letter-spacing:.08em;color:var(--stone)}
.footer-contact__v{color:var(--paper-2);overflow-wrap:anywhere}
.footer-contact__note{padding-top:8px;border-top:1px solid rgba(247,243,234,.12);font-size:13px;line-height:1.75;color:var(--stone)}
.footer-base{max-width:var(--page-max);margin-inline:auto;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 24px;padding:18px 0 22px;font-size:12.5px;letter-spacing:.04em;color:var(--stone)}
.footer-icp{font-family:var(--font-num);color:var(--gold-pale)}
.footer-copy{font-variant-numeric:tabular-nums}

/* ===== 显现与动效 ===== */
html[data-reveal-ready] [data-reveal]{opacity:0;transform:translateY(8px);transition:opacity .5s ease,transform .5s ease}
html[data-reveal-ready] [data-reveal].is-in{opacity:1;transform:none}

@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[data-reveal-ready] [data-reveal]{opacity:1;transform:none}
  .to-top{transform:none}
}

/* ===== 平板 / 桌面：侧边轨道 ===== */
@media (min-width:760px){
  .footer-grid{grid-template-columns:1.15fr 1fr 1.15fr}
  .footer-panel{border-top:0;border-bottom:0}
  .footer-panel>summary{display:none}
  .footer-panel__body{display:block;padding-bottom:0}
}

@media (min-width:1080px){
  body{padding-left:var(--rail-w)}
  .site-header{
    position:fixed;top:0;left:0;bottom:0;
    width:var(--rail-w);
    display:flex;flex-direction:column;
    padding:28px 22px 22px;
    overflow-y:auto;overflow-x:hidden;
    background-image:linear-gradient(180deg,rgba(201,162,39,.13),rgba(201,162,39,0) 40%);
    background-color:var(--ink);
    border-bottom:0;
    border-right:1px solid rgba(201,162,39,.3);
  }
  .header-bar{display:block;height:auto;max-width:none;margin:0;padding:0}
  .brand{padding-bottom:20px;border-bottom:1px solid rgba(247,243,234,.14)}
  .brand__seal{width:46px;height:46px;font-size:15px}
  .brand__name{font-size:17px}
  .brand__sub{font-size:11px}
  .nav-toggle{display:none}
  .nav-scrim{display:none}
  .site-nav{
    position:static;transform:none;width:auto;
    flex:1 1 auto;
    padding:22px 0 0;margin:0;
    background:transparent;border-right:0;
    overflow:visible;
  }
  .site-nav__caption{margin-bottom:10px;color:var(--stone)}
  .site-nav__item{border-bottom:0}
  .site-nav__list{gap:2px}
  .site-nav__link{padding:9px 10px;border-radius:8px;font-size:15px;font-weight:700;gap:10px;transition:background-color .2s ease,color .2s ease,transform .2s ease}
  .site-nav__link:hover{padding-left:10px;background:rgba(201,162,39,.15);color:#FFFDF6;transform:translateX(2px)}
  .site-nav__link[aria-current="page"]{background:var(--gold);color:var(--ink)}
  .site-nav__link[aria-current="page"] .site-nav__idx{color:var(--ink)}
  .site-nav__link[aria-current="page"] .site-nav__label{text-decoration:none}
  .quick-links{margin-top:20px;padding-top:18px}
  .site-nav__foot{margin-top:inherit;padding-top:18px}
  .to-top{position:static;width:100%;margin-top:14px;justify-content:flex-start;padding:0 15px;transform:translateY(6px)}
  .to-top.is-visible{transform:translateY(0)}
  .scroll-meter{top:0;bottom:0;left:calc(var(--rail-w) - 3px);right:auto;width:3px;height:auto;transform:scaleY(var(--scroll-progress,0));transform-origin:50% 0}
}