/* ============================================================
   必胜28数据 · /assets/site.css
   共享外壳样式：reset / 变量 / 中文排版 / 头部轨道 / 页脚 /
   通用按钮 / 面包屑 / 正文容器 / 网格 / 基础组件
   ============================================================ */

/* ---------- 变量 ---------- */
:root{
  --c-ink:#0A1626;
  --c-navy:#12263F;
  --c-deep:#050D18;
  --c-signal:#FF6A2B;
  --c-amber:#FFB056;
  --c-cyan:#2FD2C5;
  --c-silver:#A8B6C6;
  --c-paper:#E9E5DF;
  --c-white:#F4F7FA;
  --c-ok:#46D08A;
  --c-warn:#FF5C7A;

  --bg:var(--c-ink);
  --surface:var(--c-navy);
  --text:var(--c-white);
  --text-dim:var(--c-silver);
  --text-faint:rgba(168,182,198,.66);
  --line:rgba(168,182,198,.18);
  --line-strong:rgba(168,182,198,.34);

  --r-sm:10px;
  --r-md:16px;
  --r-lg:22px;
  --r-xl:28px;
  --r-pill:999px;

  --rail-w:264px;
  --wrap:1180px;

  --ease:cubic-bezier(.2,.8,.2,1);
  --dur:.28s;

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:ui-monospace,"SFMono-Regular","JetBrains Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

/* ---------- reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  background:var(--c-ink);
}
body{
  margin:0;
  background:var(--c-ink);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img,svg,video{ max-width:100%; height:auto; }
button{ font-family:inherit; }
a{ color:var(--c-cyan); text-underline-offset:3px; }
::selection{ background:rgba(255,106,43,.32); color:var(--c-white); }

:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{
  outline:2px solid var(--c-signal);
  outline-offset:3px;
  border-radius:6px;
}

/* ---------- 中文排版 ---------- */
h1,h2,h3,h4,h5,h6{
  margin:0 0 .62em;
  font-weight:900;
  line-height:1.18;
  letter-spacing:-.01em;
  color:var(--c-white);
}
h1{ font-size:clamp(2rem,5vw,3.4rem); letter-spacing:-.02em; }
h2{ font-size:clamp(1.5rem,3.2vw,2.2rem); }
h3{ font-size:clamp(1.14rem,2.2vw,1.42rem); font-weight:700; line-height:1.4; }
h4{ font-size:1.05rem; font-weight:700; line-height:1.45; }
p{ margin:0 0 1em; }
p:last-child{ margin-bottom:0; }
ul,ol{ margin:0 0 1em; padding-left:1.25em; }
li{ margin-bottom:.4em; }
strong,b{ font-weight:700; color:var(--c-white); }
hr{ border:0; border-top:1px solid var(--line); margin:40px 0; }
[hidden]{ display:none !important; }

.num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
  margin-inline:.12em;
}
[data-count]{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  left:14px;
  top:-90px;
  z-index:999;
  padding:12px 20px;
  border-radius:0 0 var(--r-md) var(--r-md);
  background:var(--c-signal);
  color:#0A1626;
  font-size:15px;
  font-weight:700;
  text-decoration:none;
  transition:top .24s var(--ease);
}
.skip-link:focus{ top:0; }

/* ---------- 头部轨道 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(5,13,24,.96);
  color:var(--c-white);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.rail-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:12px 18px;
}
.rail-head{
  flex:1 1 auto;
  min-width:0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}

/* 品牌锁定组 */
.brand-lockup{
  display:flex;
  align-items:center;
  gap:11px;
  min-width:0;
  text-decoration:none;
  color:inherit;
}
.brand-mark{
  position:relative;
  flex:0 0 34px;
  width:34px;
  height:34px;
  border-radius:11px;
  background:linear-gradient(150deg,#16304f,#0b1a2d);
  border:1px solid rgba(255,106,43,.5);
  display:grid;
  place-items:center;
}
.brand-mark::before{
  content:"";
  position:absolute;
  inset:5px;
  border-radius:6px;
  border:1px solid rgba(47,210,197,.42);
}
.brand-mark-core{
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--c-signal);
  box-shadow:0 0 0 3px rgba(255,106,43,.18);
}
.brand-text{ display:flex; flex-direction:column; min-width:0; }
.brand-name{
  font-size:16px;
  font-weight:900;
  line-height:1.25;
  letter-spacing:.01em;
  color:var(--c-white);
  white-space:nowrap;
}
.brand-sub{
  font-size:11px;
  line-height:1.4;
  letter-spacing:.06em;
  color:var(--text-faint);
  white-space:nowrap;
}
.brand-lockup:hover .brand-name{ color:var(--c-amber); }

/* 移动端抽屉按钮 */
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:9px 15px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:rgba(18,38,63,.82);
  color:var(--c-white);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  cursor:pointer;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.nav-toggle:hover{ border-color:var(--c-signal); }
.nav-toggle-lines{ display:inline-flex; flex-direction:column; gap:4px; width:16px; }
.nav-toggle-lines i{
  display:block;
  height:2px;
  border-radius:2px;
  background:var(--c-signal);
  transition:transform .26s var(--ease),width .26s var(--ease);
}
.nav-toggle-lines i:nth-child(2){ width:11px; }
.site-header[data-open] .nav-toggle-lines i:first-child{ transform:translateY(3px) rotate(45deg); }
.site-header[data-open] .nav-toggle-lines i:last-child{ width:16px; transform:translateY(-3px) rotate(-45deg); }
.nav-toggle-text{ font-size:13px; color:var(--text-dim); }

/* 导航（移动端 = 左侧抽屉） */
.site-nav{
  display:flex;
  flex-direction:column;
  gap:22px;
  position:fixed;
  z-index:110;
  top:0;
  bottom:0;
  left:0;
  width:min(320px,86vw);
  padding:24px 20px 32px;
  background:var(--c-deep);
  border-right:1px solid var(--line);
  overflow-y:auto;
  transform:translateX(-102%);
  transition:transform .36s var(--ease);
}
.site-header[data-open] .site-nav{ transform:translateX(0); }

.nav-scrim{
  position:fixed;
  inset:0;
  z-index:100;
  background:rgba(5,13,24,.72);
  opacity:0;
  pointer-events:none;
  transition:opacity .3s var(--ease);
}
.site-header[data-open] .nav-scrim{ opacity:1; pointer-events:auto; }

.rail-caption{
  margin:0 0 12px;
  font-size:11px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--text-faint);
}

.nav-rail{
  list-style:none;
  margin:0;
  padding:0;
  position:relative;
  display:flex;
  flex-direction:column;
  gap:2px;
}
.nav-rail::before{
  content:"";
  position:absolute;
  left:9px;
  top:6px;
  bottom:6px;
  width:1px;
  background:linear-gradient(180deg,rgba(168,182,198,.44),rgba(168,182,198,.06));
}
.nav-item{ position:relative; margin:0; }
.nav-item > a{
  display:flex;
  align-items:center;
  gap:14px;
  padding:12px 10px 12px 0;
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-dim);
  font-size:15px;
  font-weight:500;
  text-decoration:none;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-item > a:hover{ color:var(--c-white); background:rgba(47,210,197,.06); }
.nav-tick{
  position:relative;
  z-index:1;
  flex:0 0 19px;
  width:19px;
  height:19px;
  border-radius:50%;
  background:var(--c-deep);
  border:1px solid rgba(168,182,198,.4);
  display:grid;
  place-items:center;
  transition:border-color .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-tick::after{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--c-silver);
  opacity:.55;
  transition:opacity .22s var(--ease),background .22s var(--ease);
}
.nav-item > a:hover .nav-tick{ border-color:var(--c-amber); }
.nav-item > a:hover .nav-tick::after{ background:var(--c-amber); opacity:1; }
.nav-label{ white-space:nowrap; }

.nav-item > a[aria-current="page"]{ color:var(--c-white); font-weight:700; }
.nav-item > a[aria-current="page"] .nav-tick{
  border-color:var(--c-signal);
  background:var(--c-signal);
  box-shadow:0 0 0 4px rgba(255,106,43,.16);
}
.nav-item > a[aria-current="page"] .nav-tick::after{ background:#fff; opacity:1; }

.nav-quick{ display:flex; flex-direction:column; }
.quick-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.quick-list li{ margin:0; }
.quick-list a{
  display:inline-block;
  padding:5px 12px;
  border-radius:var(--r-pill);
  border:1px solid rgba(168,182,198,.26);
  color:var(--text-dim);
  font-size:13px;
  text-decoration:none;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.quick-list a:hover{ color:#0A1626; background:var(--c-cyan); border-color:var(--c-cyan); }

.rail-cta{ width:100%; margin-top:auto; }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-family:inherit;
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.3;
  text-decoration:none;
  cursor:pointer;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn:active{ transform:translateY(1px); }
.btn-primary{
  background:var(--c-signal);
  color:#0A1626;
  box-shadow:0 12px 30px -16px rgba(255,106,43,.95);
}
.btn-primary:hover{ background:var(--c-amber); }
.btn-ghost{
  background:transparent;
  color:var(--c-white);
  border-color:var(--line-strong);
}
.btn-ghost:hover{ border-color:var(--c-cyan); color:var(--c-cyan); }
.btn-block{ width:100%; }

/* ---------- 布局容器 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:20px;
}
.section{ padding-block:56px; }
.section-head{ margin-bottom:32px; }

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin-bottom:14px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--c-cyan);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--c-cyan);
}

.prose{
  max-width:38em;
  font-size:17px;
  line-height:1.78;
  color:var(--text-dim);
}
.prose p{ margin-bottom:1.15em; }
.prose strong{ color:var(--c-white); }
.prose a{ color:var(--c-cyan); }
.lead{
  font-size:clamp(18px,2.2vw,21px);
  line-height:1.7;
  color:var(--c-white);
}
.reading-surface{
  background:var(--c-paper);
  color:#0A1626;
  border-radius:var(--r-xl);
  padding:34px 28px;
}
.reading-surface h2,
.reading-surface h3,
.reading-surface h4{ color:#0A1626; }
.reading-surface .prose{ color:#1d3147; }
.reading-surface .prose strong{ color:#0A1626; }
.reading-surface .prose a{ color:#B4441A; }

.grid{ display:grid; gap:20px; }
.grid-2,.grid-3,.grid-4{ display:grid; gap:20px; }

/* ---------- 面包屑 ---------- */
.breadcrumb{ margin:0 0 28px; }
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  list-style:none;
  margin:0;
  padding:0;
  font-size:13px;
  color:var(--text-faint);
}
.breadcrumb-list li{ display:flex; align-items:center; gap:8px; margin:0; }
.breadcrumb-list li + li::before{ content:"/"; color:rgba(168,182,198,.42); }
.breadcrumb-list a{ color:var(--text-dim); text-decoration:none; }
.breadcrumb-list a:hover{ color:var(--c-cyan); }
.breadcrumb-list [aria-current="page"]{ color:var(--c-white); font-weight:700; }

/* ---------- 卡片 / 面板 ---------- */
.panel{
  background:linear-gradient(168deg,rgba(18,38,63,.96),rgba(10,22,38,.96));
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  transition:border-color .26s var(--ease),transform .26s var(--ease),box-shadow .26s var(--ease);
}
.card > :last-child{ margin-bottom:0; }

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:rgba(10,22,38,.6);
  color:var(--c-silver);
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
  line-height:1.6;
  white-space:nowrap;
}
.tag--signal{ color:var(--c-signal); border-color:rgba(255,106,43,.5); background:rgba(255,106,43,.1); }
.tag--cyan{ color:var(--c-cyan); border-color:rgba(47,210,197,.44); background:rgba(47,210,197,.1); }
.tag--ok{ color:var(--c-ok); border-color:rgba(70,208,138,.44); background:rgba(70,208,138,.1); }
.tag--warn{ color:var(--c-warn); border-color:rgba(255,92,122,.44); background:rgba(255,92,122,.1); }

/* ---------- 指标 ---------- */
.stat{ display:flex; flex-direction:column; gap:8px; }
.stat-value{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:clamp(1.8rem,4vw,2.6rem);
  font-weight:700;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--c-white);
}
.stat-value.is-signal{ color:var(--c-signal); }
.stat-label{
  font-size:13px;
  letter-spacing:.06em;
  color:var(--text-dim);
}

/* ---------- 数据表 ---------- */
.table-scroll{
  overflow-x:auto;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
}
.data-table{
  width:100%;
  min-width:520px;
  border-collapse:collapse;
  background:var(--surface);
  font-size:15px;
}
.data-table caption{
  caption-side:top;
  padding:16px 16px 0;
  text-align:left;
  font-size:13px;
  color:var(--text-dim);
}
.data-table th,
.data-table td{
  padding:14px 16px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:middle;
}
.data-table thead th{
  background:rgba(5,13,24,.62);
  color:var(--c-silver);
  font-size:12px;
  font-weight:700;
  letter-spacing:.12em;
  white-space:nowrap;
}
.data-table tbody tr:last-child td{ border-bottom:0; }
.data-table tbody tr{ transition:background .2s var(--ease); }
.data-table tbody tr:hover{ background:rgba(47,210,197,.05); }
.data-table td:first-child{ border-left:2px solid transparent; }
.data-table tbody tr:hover td:first-child{ border-left-color:var(--c-signal); }
.data-table td.is-num{ font-family:var(--font-num); font-variant-numeric:tabular-nums; }

/* ---------- 媒体容器 ---------- */
.figure{
  margin:0;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.media{
  position:relative;
  display:block;
  width:100%;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(150deg,#12263F,#0A1626 72%);
  isolation:isolate;
}
.media > img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media--16x9{ aspect-ratio:16 / 9; }
.media--4x3{ aspect-ratio:4 / 3; }
.media--1x1{ aspect-ratio:1 / 1; }
.media--3x4{ aspect-ratio:3 / 4; }
.media--21x9{ aspect-ratio:21 / 9; }
.media--placeholder::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(168,182,198,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(168,182,198,.07) 1px,transparent 1px);
  background-size:32px 32px;
}
.media-caption{
  font-size:13px;
  line-height:1.6;
  color:var(--text-dim);
}
.media-grid{
  display:grid;
  gap:16px;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
}

/* ---------- 分段控件 / 标签页 ---------- */
.segmented{
  display:inline-flex;
  flex-wrap:wrap;
  gap:4px;
  padding:5px;
  border-radius:var(--r-pill);
  background:rgba(5,13,24,.72);
  border:1px solid var(--line);
}
.segmented [data-tab]{
  appearance:none;
  border:0;
  cursor:pointer;
  padding:9px 18px;
  border-radius:var(--r-pill);
  background:transparent;
  color:var(--text-dim);
  font-family:inherit;
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  transition:background .22s var(--ease),color .22s var(--ease);
}
.segmented [data-tab]:hover{ color:var(--c-white); }
.segmented [data-tab][aria-selected="true"]{
  background:var(--c-signal);
  color:#0A1626;
}
[data-panel][hidden]{ display:none !important; }

/* ---------- 显现动画 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(18px);
}
.js [data-reveal].is-visible{
  opacity:1;
  transform:none;
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:88px;
  background:var(--c-deep);
  color:var(--text-dim);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:2px;
  background:linear-gradient(90deg,var(--c-signal),var(--c-cyan) 42%,transparent 84%);
  opacity:.72;
}
.footer-inner{
  max-width:var(--wrap);
  margin-inline:auto;
  padding:52px 20px 28px;
}
.footer-grid{
  display:grid;
  gap:36px 28px;
  grid-template-columns:1fr;
}
.footer-brand-name{
  margin:0 0 10px;
  font-size:20px;
  font-weight:900;
  letter-spacing:.01em;
  color:var(--c-white);
}
.footer-brand-desc{
  margin:0 0 14px;
  max-width:30em;
  font-size:14px;
  line-height:1.75;
  color:var(--text-dim);
}
.footer-region{
  margin:0;
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--c-cyan);
}
.footer-col-title{
  margin:0 0 15px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--c-white);
}
.footer-links{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links li{ margin:0; }
.footer-links a{
  color:var(--text-dim);
  font-size:14px;
  text-decoration:none;
  transition:color .2s var(--ease);
}
.footer-links a:hover{ color:var(--c-signal); }
.footer-address{
  font-style:normal;
  font-size:14px;
  line-height:1.75;
  color:var(--text-dim);
}
.footer-address p{ margin:0 0 8px; }
.footer-hours{
  margin:12px 0 0;
  font-size:12.5px;
  color:var(--text-faint);
}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  align-items:baseline;
  justify-content:space-between;
}
.footer-legal,
.footer-kicker{
  margin:0;
  font-size:12.5px;
  line-height:1.7;
  color:var(--text-faint);
}
.footer-kicker{ color:rgba(168,182,198,.5); }

/* ---------- 主内容锚点 ---------- */
#main-content{ display:block; scroll-margin-top:88px; }
main [id]{ scroll-margin-top:96px; }

/* ============================================================
   响应式
   ============================================================ */
@media (min-width:640px){
  .footer-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .grid-2{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .section{ padding-block:68px; }
  .card:hover{
    border-color:rgba(255,106,43,.42);
    transform:translateY(-3px);
    box-shadow:0 26px 52px -34px rgba(0,0,0,.92);
  }
}

@media (min-width:768px){
  .wrap{ padding-inline:32px; }
  .footer-inner{ padding-inline:32px; }
  .grid-3{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .grid-4{ grid-template-columns:repeat(2,minmax(0,1fr)); }
}

@media (max-width:520px){
  .media--21x9{ aspect-ratio:16 / 10; }
}

@media (min-width:1024px){
  body{ padding-left:var(--rail-w); }

  .site-header{
    position:fixed;
    inset:0 auto 0 0;
    width:var(--rail-w);
    border-bottom:0;
    border-right:1px solid var(--line);
    background:var(--c-deep);
    -webkit-backdrop-filter:none;
    backdrop-filter:none;
  }
  .rail-inner{
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    height:100%;
    padding:30px 24px 34px;
    gap:30px;
    overflow-y:auto;
  }
  .rail-head{
    flex-direction:column;
    align-items:flex-start;
    gap:0;
  }
  .nav-toggle{ display:none; }
  .nav-scrim{ display:none; }

  .site-nav{
    position:static;
    transform:none;
    width:auto;
    padding:0;
    border:0;
    background:transparent;
    overflow:visible;
    flex:1 1 auto;
    gap:24px;
  }
  .site-header[data-open] .site-nav{ transform:none; }
  .rail-cta{ margin-top:auto; }

  .section{ padding-block:80px; }
  .grid-3{ grid-template-columns:repeat(3,minmax(0,1fr)); }
  .grid-4{ grid-template-columns:repeat(4,minmax(0,1fr)); }
  .footer-grid{
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:40px 32px;
  }
}

@media (min-width:1100px){
  .footer-grid{
    grid-template-columns:1.3fr repeat(3,.9fr) 1.6fr;
  }
  .footer-brand{ grid-column:auto; }
}

@media (min-width:1280px){
  .section{ padding-block:92px; }
  #main-content{ scroll-margin-top:24px; }
}

/* ---------- 降级动效 ---------- */
@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;
  }
  .js [data-reveal]{
    opacity:1 !important;
    transform:none !important;
  }
  .card:hover{ transform:none; }
}