/* ===== 博业赛事 · 共享样式 /assets/site.css ===== */

:root{
  --by-deep:#0A2A30;
  --by-deep-2:#123C46;
  --by-wire:#1F6F78;
  --by-wire-lite:#3E8F99;
  --by-cyan:#35F2D6;
  --by-orange:#FF6A2B;
  --by-cream:#F3EAD8;
  --by-ink:#1B1512;
  --by-mist:#9FB8BC;
  --by-lime:#D8F35C;
  --by-paper:#FBFAF6;
  --by-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --by-mono:"Roboto Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Noto Sans SC",monospace;
  --by-h-header:72px;
  --by-h-header-sm:56px;
  --by-maxw:1280px;
  --by-gutter:clamp(16px,4vw,40px);
  --by-ease:cubic-bezier(.2,.7,.3,1);
  --by-t:180ms;
  --by-radius:2px;
  --by-line:rgba(31,111,120,.45);
  --by-line-strong:rgba(31,111,120,.8);
}

*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--by-h-header) + 16px);
}
body{
  margin:0;
  background:var(--by-deep);
  color:var(--by-paper);
  font-family:var(--by-sans);
  font-size:16px;
  line-height:1.75;
  min-height:100%;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 480px at 88% -12%, rgba(53,242,214,.10), transparent 70%),
    radial-gradient(720px 420px at -12% 34%, rgba(255,106,43,.07), transparent 70%);
}
img,svg,video{max-width:100%;height:auto;display:block}
a{color:var(--by-cyan);text-decoration:none}
a:hover{color:var(--by-lime)}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0}
button{font:inherit;color:inherit}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--by-cyan);outline-offset:2px;border-radius:1px}
::selection{background:var(--by-cyan);color:var(--by-ink)}

.by-sr-only{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;left:12px;top:-80px;z-index:200;
  background:var(--by-cyan);color:var(--by-ink);
  font-size:13px;font-weight:800;letter-spacing:.04em;
  padding:10px 16px;border-radius:var(--by-radius);text-decoration:none;
  transition:top 160ms var(--by-ease);
}
.skip-link:focus{top:12px;color:var(--by-ink)}

/* ---------- 排版 ---------- */
.by-kicker{
  display:flex;align-items:center;gap:10px;
  margin:0 0 10px;
  font-family:var(--by-mono);font-size:11.5px;
  letter-spacing:.22em;text-transform:uppercase;
  color:var(--by-cyan);
}
.by-kicker::before{content:"";width:22px;height:1px;background:var(--by-cyan)}
.by-h1{
  margin:0 0 14px;
  font-size:clamp(34px,5.2vw,56px);
  line-height:1.05;font-weight:900;letter-spacing:-.02em;
  color:var(--by-paper);
}
.by-h1--tick::after{content:"";display:block;width:64px;height:3px;background:var(--by-cyan);margin-top:16px}
.by-h2{
  margin:0 0 10px;
  font-size:clamp(22px,2.6vw,28px);
  line-height:1.2;font-weight:900;letter-spacing:-.01em;color:var(--by-paper);
}
.by-h3{margin:0 0 8px;font-size:18px;font-weight:800;letter-spacing:-.005em;color:var(--by-paper)}
.by-lead{
  margin:0 0 18px;max-width:44ch;
  font-size:clamp(16px,1.6vw,18px);line-height:1.75;color:#CFE0E2;
}
.by-note{
  font-family:var(--by-mono);font-size:12.5px;letter-spacing:.02em;
  color:var(--by-mist);line-height:1.7;
}
.by-num,.by-mono{font-family:var(--by-mono);font-variant-numeric:tabular-nums}

/* ---------- 布局 ---------- */
.by-wrap{
  position:relative;z-index:1;
  width:100%;max-width:var(--by-maxw);
  margin:0 auto;padding:0 var(--by-gutter);
}
.by-main{
  position:relative;z-index:1;display:block;
  min-height:60vh;
  padding-top:clamp(24px,4vw,48px);
  padding-bottom:clamp(40px,7vw,88px);
}
.by-section{padding:clamp(30px,5.5vw,68px) 0}
.by-section--tight{padding:clamp(18px,3vw,32px) 0}
.by-section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;gap:10px 24px;
  margin-bottom:clamp(16px,3vw,28px);
}
.by-section__head > .by-h2{margin-bottom:0}
.by-section__head .by-note{margin-left:auto}

.by-grid{display:grid;gap:clamp(14px,2vw,24px)}
.by-grid--2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.by-grid--3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.by-grid--4{grid-template-columns:repeat(auto-fit,minmax(186px,1fr))}

/* ---------- 按钮 / 标记 ---------- */
.by-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 16px;
  border:1px solid var(--by-wire);border-radius:var(--by-radius);
  background:transparent;color:var(--by-paper);
  font-family:var(--by-sans);font-size:13px;font-weight:800;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;
  transition:background var(--by-t) var(--by-ease),border-color var(--by-t) var(--by-ease),color var(--by-t) var(--by-ease),transform var(--by-t) var(--by-ease);
}
.by-btn:hover{border-color:var(--by-cyan);color:var(--by-cyan);background:rgba(53,242,214,.07)}
.by-btn--primary{background:var(--by-orange);border-color:var(--by-orange);color:var(--by-ink)}
.by-btn--primary:hover{background:#ff8348;border-color:#ff8348;color:var(--by-ink)}
.by-btn--ghost{font-family:var(--by-mono);font-weight:600;letter-spacing:.06em;color:var(--by-mist)}
.by-btn--ghost:hover{color:var(--by-cyan)}

.by-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 8px;border:1px solid var(--by-wire);border-radius:var(--by-radius);
  background:rgba(53,242,214,.06);color:var(--by-cyan);
  font-family:var(--by-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
}
.by-tag--orange{color:var(--by-orange);border-color:rgba(255,106,43,.5);background:rgba(255,106,43,.08)}
.by-tag--lime{color:var(--by-lime);border-color:rgba(216,243,92,.45);background:rgba(216,243,92,.08)}

.by-crumbs{
  display:flex;flex-wrap:wrap;gap:6px 10px;margin:0 0 18px;
  list-style:none;font-family:var(--by-mono);font-size:12px;letter-spacing:.04em;color:var(--by-mist);
}
.by-crumbs li{display:flex;align-items:center;gap:10px}
.by-crumbs li + li::before{content:"/";color:var(--by-wire)}
.by-crumbs a{color:var(--by-mist);text-decoration:none;transition:color var(--by-t) var(--by-ease)}
.by-crumbs a:hover{color:var(--by-cyan)}

/* ---------- 面板 / 卡片 / 轨道 ---------- */
.by-panel{
  position:relative;
  background:var(--by-deep-2);
  border:1px solid var(--by-wire);border-radius:var(--by-radius);
  padding:clamp(20px,3vw,34px);
  transition:transform var(--by-t) var(--by-ease),border-color var(--by-t) var(--by-ease),box-shadow var(--by-t) var(--by-ease);
}
.by-panel__label{
  position:absolute;top:0;left:18px;transform:translateY(-50%);
  padding:0 10px;background:var(--by-deep);
  font-family:var(--by-mono);font-size:11px;letter-spacing:.2em;
  color:var(--by-cyan);
}
.by-panel--lift:hover{
  transform:translateY(-4px);
  border-color:var(--by-cyan);
  box-shadow:0 18px 36px rgba(0,0,0,.35);
}
.by-panel--paper{background:var(--by-cream);border-color:#d8cdb4;color:var(--by-ink)}
.by-panel--paper .by-h2,.by-panel--paper .by-h3{color:var(--by-ink)}
.by-panel--paper .by-note{color:#6b5d4d}

.by-track{
  display:flex;gap:14px;
  overflow-x:auto;overscroll-behavior-x:contain;
  padding:4px 2px 18px;
  scroll-snap-type:x proximity;
  scrollbar-color:var(--by-wire) transparent;
  scrollbar-width:thin;
}
.by-track::-webkit-scrollbar{height:6px}
.by-track::-webkit-scrollbar-track{background:rgba(31,111,120,.2)}
.by-track::-webkit-scrollbar-thumb{background:var(--by-wire)}
.by-track > *{scroll-snap-align:start;flex:0 0 min(320px,78vw)}

.by-card{
  display:flex;flex-direction:column;gap:8px;
  padding:18px;
  background:var(--by-deep-2);
  border:1px solid var(--by-wire);border-radius:var(--by-radius);
  transition:transform var(--by-t) var(--by-ease),border-color var(--by-t) var(--by-ease);
}
.by-card:hover{transform:translateY(-4px);border-color:var(--by-cyan)}
.by-card__title{margin:0;font-size:17px;font-weight:800;color:var(--by-paper)}
.by-card__meta{font-family:var(--by-mono);font-size:11.5px;letter-spacing:.06em;color:var(--by-mist)}

.by-fav{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 10px;border:1px solid var(--by-wire);border-radius:var(--by-radius);
  background:transparent;color:var(--by-mist);
  font-size:12px;font-weight:700;cursor:pointer;
  transition:color var(--by-t) var(--by-ease),border-color var(--by-t) var(--by-ease),background var(--by-t) var(--by-ease);
}
.by-fav::before{content:"◇";font-size:13px;line-height:1}
.by-fav[aria-pressed="true"]{color:var(--by-orange);border-color:var(--by-orange);background:rgba(255,106,43,.1)}
.by-fav[aria-pressed="true"]::before{content:"◆"}

/* ---------- 数据条 / 表格 ---------- */
.by-bar{
  position:relative;height:8px;border-radius:1px;overflow:hidden;
  background:rgba(31,111,120,.3);
}
.by-bar__fill{
  display:block;height:100%;width:var(--by-bar,0);
  background:linear-gradient(90deg,var(--by-cyan),var(--by-lime));
  transition:width 320ms var(--by-ease);
}
.by-table{width:100%;font-size:14px}
.by-table th,.by-table td{
  padding:10px 12px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--by-line);
}
.by-table th{
  font-family:var(--by-mono);font-size:11.5px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--by-cyan);
}
.by-table tbody tr:nth-child(odd){background:rgba(18,60,70,.55)}
.by-table tbody tr:hover{background:rgba(53,242,214,.06)}

/* ---------- 图片容器 ---------- */
.by-media{
  position:relative;overflow:hidden;display:block;
  aspect-ratio:16/9;
  background:#08222A;
  border:1px solid var(--by-wire);border-radius:var(--by-radius);
}
.by-media--tall{aspect-ratio:4/5}
.by-media--wide{aspect-ratio:21/9}
.by-media img{width:100%;height:100%;object-fit:cover;filter:saturate(.85) contrast(1.05)}
.by-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(160deg,rgba(10,42,48,.55),rgba(31,111,120,.25) 55%,rgba(53,242,214,.18));
}
.by-media__ph{
  position:absolute;inset:0;display:grid;place-items:center;
  font-family:var(--by-mono);font-size:12px;letter-spacing:.2em;color:var(--by-wire-lite);
}
.by-media__cap{
  position:absolute;left:0;bottom:0;z-index:2;
  padding:6px 10px;
  background:rgba(10,42,48,.88);color:var(--by-mist);
  border-top:1px solid var(--by-wire);border-right:1px solid var(--by-wire);
  font-family:var(--by-mono);font-size:11px;letter-spacing:.1em;
}

/* ---------- 纸张阅读区 ---------- */
.by-paper{
  background:var(--by-cream);color:var(--by-ink);
  border:1px solid #d8cdb4;border-radius:var(--by-radius);
  padding:clamp(22px,4vw,48px);
}
.by-paper .by-h1,.by-paper .by-h2,.by-paper .by-h3{color:var(--by-ink)}
.by-paper .by-kicker{color:#0f5a63}
.by-paper .by-kicker::before{background:#0f5a63}
.by-paper .by-note{color:#6b5d4d}
.by-paper a{color:#0f4b52;text-decoration:underline;text-underline-offset:3px}
.by-paper a:hover{color:var(--by-orange)}
.by-prose{max-width:38em;font-size:16.5px;line-height:1.75}
.by-prose p{margin:0 0 1.1em}
.by-prose h2{margin:1.8em 0 .6em}
.by-prose ul,.by-prose ol{margin:0 0 1.1em;padding-left:1.3em}
.by-prose li{margin:0 0 .4em}

/* ---------- 侧边索引轨道 ---------- */
.by-rail{
  position:sticky;top:calc(var(--by-h-header) + 24px);
  display:grid;gap:2px;
}
.by-rail__link{
  display:flex;align-items:baseline;gap:8px;
  padding:7px 10px;
  border-left:2px solid var(--by-wire);
  color:var(--by-mist);font-size:13px;text-decoration:none;
  transition:color var(--by-t) var(--by-ease),border-color var(--by-t) var(--by-ease),background var(--by-t) var(--by-ease);
}
.by-rail__link:hover{color:var(--by-paper);border-left-color:var(--by-cyan);background:rgba(53,242,214,.05)}
.by-rail__link[aria-current="true"]{color:var(--by-cyan);border-left-color:var(--by-cyan);background:rgba(53,242,214,.08)}
.by-rail__num{font-family:var(--by-mono);font-size:10.5px;color:var(--by-wire-lite)}

/* ---------- 视口显现 ---------- */
.by-js [data-reveal]{opacity:0;transform:translateY(12px);transition:opacity 300ms var(--by-ease),transform 300ms var(--by-ease)}
.by-js [data-reveal].is-in{opacity:1;transform:none}

/* ================= 头部命令栏 ================= */
.by-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,#0A2A30 0%,#0D323A 100%);
  border-bottom:1px solid var(--by-wire);
  color:var(--by-paper);
  transition:box-shadow var(--by-t) var(--by-ease);
}
.by-header[data-condensed]{box-shadow:0 14px 30px rgba(0,0,0,.42)}
.by-header__inner{
  position:relative;
  display:flex;align-items:center;gap:clamp(12px,2vw,26px);
  width:100%;max-width:var(--by-maxw);margin:0 auto;
  padding:0 var(--by-gutter);
  min-height:var(--by-h-header);
  transition:min-height var(--by-t) var(--by-ease);
}
.by-header[data-condensed] .by-header__inner{min-height:var(--by-h-header-sm)}

.by-brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:inherit;text-decoration:none}
.by-brand__mark{
  display:grid;place-items:center;width:34px;height:34px;
  border:1px solid var(--by-cyan);background:rgba(53,242,214,.07);
  color:var(--by-cyan);font-family:var(--by-mono);font-size:13px;font-weight:700;letter-spacing:.06em;
}
.by-brand__text{display:flex;flex-direction:column;line-height:1.15}
.by-brand__name{font-size:17px;font-weight:900;letter-spacing:.02em;color:var(--by-paper)}
.by-brand__meta{
  font-family:var(--by-mono);font-size:10px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--by-mist);
}

.by-nav{flex:1 1 auto;min-width:0}
.by-nav__list{
  display:flex;align-items:center;gap:2px;
  list-style:none;overflow-x:auto;scrollbar-width:none;
}
.by-nav__list::-webkit-scrollbar{display:none}
.by-nav__item{display:block}
.by-nav__link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:6px;
  padding:9px 10px;
  color:var(--by-mist);text-decoration:none;
  font-size:13.5px;font-weight:700;letter-spacing:.01em;white-space:nowrap;
  background:rgba(53,242,214,0);
  transition:color var(--by-t) var(--by-ease),background var(--by-t) var(--by-ease);
}
.by-nav__link::after{
  content:"";position:absolute;left:9px;right:9px;bottom:2px;height:2px;
  background:var(--by-cyan);transform:scaleX(0);transform-origin:0 50%;
  transition:transform var(--by-t) var(--by-ease);
}
.by-nav__link:hover{color:var(--by-paper);background:rgba(53,242,214,.07)}
.by-nav__link:hover::after{transform:scaleX(.45)}
.by-nav__link[aria-current="page"]{color:var(--by-cyan);background:rgba(53,242,214,.07)}
.by-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.by-nav__idx{font-family:var(--by-mono);font-size:10px;color:var(--by-wire-lite)}
.by-nav__link[aria-current="page"] .by-nav__idx{color:var(--by-cyan)}
.by-nav__foot{display:none}

.by-header__actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}

.by-burger{
  display:none;align-items:center;gap:8px;
  padding:9px 12px;
  background:transparent;border:1px solid var(--by-wire);border-radius:var(--by-radius);
  color:var(--by-paper);font-size:12px;font-weight:800;letter-spacing:.06em;cursor:pointer;
  transition:border-color var(--by-t) var(--by-ease),color var(--by-t) var(--by-ease);
}
.by-burger:hover{border-color:var(--by-cyan);color:var(--by-cyan)}
.by-burger__bars{display:grid;gap:3px;width:16px}
.by-burger__bars i{display:block;height:2px;background:currentColor;transition:transform var(--by-t) var(--by-ease),opacity var(--by-t) var(--by-ease)}
.by-burger[aria-expanded="true"] .by-burger__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.by-burger[aria-expanded="true"] .by-burger__bars i:nth-child(2){opacity:0}
.by-burger[aria-expanded="true"] .by-burger__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.by-burger__label{line-height:1}

.by-header__ticks{
  height:6px;
  width:100%;max-width:var(--by-maxw);margin:0 auto;
  padding:0 var(--by-gutter);
  background-image:repeating-linear-gradient(90deg,var(--by-wire) 0 1px,transparent 1px 12px);
  background-size:100% 5px;
  background-position:0 bottom;
  background-repeat:no-repeat;
  background-origin:content-box;
  background-clip:content-box;
  opacity:.75;
}
.by-progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:rgba(31,111,120,.35);overflow:hidden;
}
.by-progress__fill{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--by-cyan),var(--by-lime) 60%,var(--by-orange));
  transition:transform 120ms linear;
}

/* ================= 页脚 ================= */
.by-footer{
  position:relative;z-index:1;
  margin-top:clamp(40px,8vw,96px);
  background:#071E22;
  border-top:1px solid var(--by-wire);
  color:var(--by-mist);
}
.by-footer__inner{
  width:100%;max-width:var(--by-maxw);margin:0 auto;
  padding:clamp(30px,5vw,56px) var(--by-gutter) 22px;
}
.by-footer__brand{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 20px;
  padding-bottom:18px;margin-bottom:clamp(20px,3vw,36px);
  border-bottom:1px solid var(--by-line);
}
.by-footer__wordmark{margin:0;font-size:20px;font-weight:900;letter-spacing:.02em;color:var(--by-paper)}
.by-footer__tagline{
  margin:0;font-family:var(--by-mono);font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--by-cyan);
}
.by-footer__note{margin:0;margin-left:auto;font-size:12.5px;color:var(--by-mist)}
.by-footer__cols{
  display:grid;gap:clamp(20px,3vw,40px);
  grid-template-columns:repeat(4,minmax(0,1fr));
}
.by-fcol{min-width:0}
.by-fcol__title{
  display:flex;align-items:center;gap:8px;
  margin:0 0 14px;
  font-size:13px;font-weight:900;letter-spacing:.12em;color:var(--by-paper);
}
.by-fcol__title::before{content:"";width:14px;height:2px;background:var(--by-orange);flex:0 0 auto}
.by-fcol__list{display:grid;gap:9px;list-style:none;font-size:14px}
.by-fcol__list a{
  color:var(--by-mist);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--by-t) var(--by-ease),border-color var(--by-t) var(--by-ease);
  word-break:break-word;
}
.by-fcol__list a:hover,.by-fcol__list a:focus-visible{color:var(--by-cyan);border-bottom-color:var(--by-cyan)}
.by-fcol__list--data li{display:grid;gap:2px}
.by-fcol__list--data span{color:#C4D6D8;line-height:1.6}
.by-label{
  font-family:var(--by-mono);font-size:10.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--by-wire-lite);
}
.by-fcol__icp{font-family:var(--by-mono);font-size:13px;color:var(--by-mist)}
.by-footer__base{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;
  margin-top:clamp(24px,4vw,44px);padding-top:16px;
  border-top:1px solid var(--by-line);
  font-size:12px;color:var(--by-wire-lite);letter-spacing:.06em;
}

/* ================= 响应式 ================= */
@media (max-width:1023px){
  .by-burger{display:inline-flex}
  .by-nav{
    position:absolute;left:0;right:0;top:100%;
    max-height:0;overflow:hidden;visibility:hidden;opacity:0;
    padding:0 var(--by-gutter);
    background:var(--by-deep-2);
    border-bottom:1px solid var(--by-cyan);
    box-shadow:0 22px 40px rgba(0,0,0,.45);
    transition:max-height 240ms var(--by-ease),opacity 160ms var(--by-ease),visibility 240ms var(--by-ease);
  }
  .by-nav[data-open]{
    max-height:min(72vh,560px);overflow-y:auto;
    visibility:visible;opacity:1;
    padding:8px var(--by-gutter) 20px;
  }
  .by-nav__list{flex-direction:column;align-items:stretch;gap:0;overflow:visible}
  .by-nav__link{
    width:100%;padding:13px 6px;
    font-size:15px;
    border-bottom:1px solid var(--by-line);
  }
  .by-nav__link::after{display:none}
  .by-nav__link[aria-current="page"]{background:rgba(53,242,214,.1);box-shadow:inset 3px 0 0 var(--by-cyan)}
  .by-nav__foot{display:grid;gap:10px;margin-top:16px}
  .by-nav__foot .by-btn{width:100%;padding:12px 16px;font-size:13.5px}
  body.by-nav-open{overflow:hidden}
}
@media (max-width:1023px) and (min-width:768px){
  .by-header__phone{display:inline-flex}
}
@media (max-width:900px){
  .by-footer__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .by-footer__note{margin-left:0}
}
@media (max-width:599px){
  .by-header__phone{display:none}
  .by-brand__meta{display:none}
  .by-header__cta{padding:9px 12px;font-size:12.5px}
  .by-footer__cols{grid-template-columns:1fr}
  .by-section__head .by-note{margin-left:0}
}
@media (max-width:360px){
  .by-burger__label{display:none}
}

/* ================= 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;
  }
  .by-js [data-reveal]{opacity:1!important;transform:none!important}
  .by-panel--lift:hover,.by-card:hover{transform:none}
}