/* ==========================================================================
   乐虎国游戏 · 全站共享样式 /assets/site.css
   霓虹街机厅 + 赛博老虎机：墨蓝夜色打底，暖橙锚点，电光青对比
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#0B1220;
  --ink-2:#141F33;
  --ink-3:#1B2843;
  --orange:#FF6A1A;
  --amber:#FFB020;
  --cyan:#2BE3D0;
  --magenta:#FF3D7F;
  --paper:#F5F1E8;
  --mist:#A8B3C4;
  --line:#26324A;
  --white:#FFFFFF;
  --body-soft:#DCE3EC;

  --rail-w:220px;
  --g1:8px; --g2:16px; --g3:24px; --g4:40px; --g5:64px;

  --r-sm:10px; --r-md:18px; --r-lg:28px; --r-pill:999px;
  --skew:6deg;
  --ease:cubic-bezier(.2,.7,.3,1);
  --page-max:1180px;

  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"DejaVu Sans Mono","Courier New",monospace;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}

body{
  margin:0;
  position:relative;
  min-height:100vh;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

img,picture,svg,video{max-width:100%}
img{height:auto;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
table{border-collapse:collapse;width:100%}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:6px;
}

::selection{background:rgba(255,106,26,.42);color:#fff}

/* ---------- 3. 画布氛围层（扫描线 + 霓虹光斑） ---------- */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(
    0deg,
    rgba(245,241,232,.028) 0 1px,
    transparent 1px 5px
  );
  animation:scan-drift 12s linear infinite;
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(820px 460px at 14% -12%, rgba(255,106,26,.20), transparent 64%),
    radial-gradient(680px 420px at 96% 4%, rgba(43,227,208,.13), transparent 62%),
    radial-gradient(520px 400px at 62% 108%, rgba(255,61,127,.10), transparent 66%);
}

@keyframes scan-drift{
  0%{background-position:0 0}
  100%{background-position:0 320px}
}

main{position:relative;z-index:1;display:block}

/* ---------- 4. 骨架留白（为侧边轨道让位） ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
}
@media (max-width:1023px){
  body{padding-top:64px}
}

/* ---------- 5. Skip link ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  padding:10px 18px;
  border-radius:var(--r-pill);
  background:var(--orange);
  color:#0B1220;
  font-size:14px;
  font-weight:800;
  letter-spacing:.02em;
  transform:translateY(-180%);
  transition:transform .2s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 6. 滚动进度条（JS 注入） ---------- */
.scroll-progress{
  position:fixed;
  top:0;
  left:var(--rail-w);
  right:0;
  height:2px;
  z-index:70;
  background:linear-gradient(90deg,var(--orange),var(--amber) 45%,var(--cyan));
  transform:scaleX(0);
  transform-origin:0 50%;
  pointer-events:none;
  will-change:transform;
}
@media (max-width:1023px){
  .scroll-progress{left:0}
}

/* ---------- 7. 侧边品牌轨道 / Header ---------- */
.site-rail{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--rail-w);
  z-index:50;
  display:flex;
  flex-direction:column;
  padding:26px 18px 22px;
  overflow:hidden;
  background:linear-gradient(180deg,#101B2C 0%,#0D1626 55%,#0B1220 100%);
  border-right:1px solid var(--line);
}

.site-rail::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:220px;
  pointer-events:none;
  background:linear-gradient(180deg, rgba(255,106,26,.22), rgba(255,106,26,0));
}

.site-rail::after{
  content:"";
  position:absolute;
  top:0;bottom:0;right:-1px;
  width:2px;
  pointer-events:none;
  background:linear-gradient(180deg,
    rgba(43,227,208,0) 0%,
    rgba(43,227,208,.45) 32%,
    rgba(255,106,26,.55) 68%,
    rgba(255,106,26,0) 100%);
}

.rail-inner{
  position:relative;
  z-index:1;
  display:flex;
  flex-direction:column;
  height:100%;
  min-height:0;
}

/* 品牌 */
.rail-brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
  padding:4px 2px;
  border-radius:var(--r-md);
}

.rail-brand__mark{
  flex:0 0 auto;
  width:40px;
  height:40px;
  display:grid;
  place-items:center;
  border-radius:13px;
  background:linear-gradient(135deg,var(--orange),var(--amber));
  color:#0B1220;
  font-family:var(--font-display);
  font-size:20px;
  font-weight:900;
  letter-spacing:-.02em;
  box-shadow:0 0 0 1px rgba(255,176,32,.5), 0 6px 18px rgba(255,106,26,.30);
}

.rail-brand__text{
  display:flex;
  flex-direction:column;
  min-width:0;
}

.rail-brand__name{
  font-family:var(--font-display);
  font-size:18px;
  font-weight:900;
  line-height:1.25;
  letter-spacing:-.02em;
  color:var(--paper);
}

.rail-brand__sub{
  margin-top:2px;
  font-size:10px;
  line-height:1.45;
  letter-spacing:.04em;
  color:var(--mist);
}

/* 刷新提示 */
.rail-note{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:18px;
  padding:9px 12px;
  border-radius:var(--r-pill);
  background:rgba(43,227,208,.07);
  box-shadow:inset 0 0 0 1px rgba(43,227,208,.18);
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.4;
  letter-spacing:.03em;
  color:#9FD9D2;
}

.rail-note__dot{
  flex:0 0 auto;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 8px var(--cyan);
  animation:pulse-dot 2.4s var(--ease) infinite;
}

@keyframes pulse-dot{
  0%,100%{opacity:1}
  50%{opacity:.35}
}

/* 移动端折叠按钮（桌面隐藏） */
.rail-toggle{
  display:none;
  align-items:center;
  gap:9px;
  min-height:44px;
  padding:0 14px;
  border-radius:var(--r-pill);
  background:transparent;
  color:var(--paper);
  box-shadow:inset 0 0 0 1px var(--line);
  font-size:14px;
  font-weight:700;
  transition:box-shadow .18s var(--ease), color .18s var(--ease);
}
.rail-toggle:hover{
  color:var(--cyan);
  box-shadow:inset 0 0 0 1px rgba(43,227,208,.5);
}
.rail-toggle__bars{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:4px;
  width:16px;
}
.rail-toggle__bars > span{
  display:block;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .22s var(--ease), opacity .22s var(--ease);
}

/* 菜单区（桌面：纵向导航 + 底部 CTA） */
.rail-menu{
  display:flex;
  flex-direction:column;
  flex:1 1 auto;
  min-height:0;
  margin-top:28px;
}

.rail-nav{display:block}

.rail-nav__list{
  display:flex;
  flex-direction:column;
  gap:3px;
}

.rail-nav__link{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:8px 12px;
  border-radius:14px;
  color:var(--mist);
  font-size:15px;
  font-weight:600;
  transition:color .18s var(--ease), background-color .18s var(--ease), box-shadow .18s var(--ease);
}

.rail-nav__link::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:3px;
  height:0;
  border-radius:3px;
  background:var(--cyan);
  transform:translateY(-50%);
  transition:height .2s var(--ease);
}

.rail-nav__link:hover{
  color:var(--paper);
  box-shadow:inset 0 0 0 1px rgba(43,227,208,.32);
}
.rail-nav__link:hover::before{height:18px}

.rail-nav__idx{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.08em;
  color:var(--mist);
  opacity:.75;
}

.rail-nav__label{font-family:var(--font-body)}

.rail-nav__link[aria-current="page"]{
  background:var(--orange);
  color:#0B1220;
  font-weight:800;
  box-shadow:0 8px 22px rgba(255,106,26,.28);
}
.rail-nav__link[aria-current="page"] .rail-nav__idx{color:rgba(11,18,32,.62);opacity:1}
.rail-nav__link[aria-current="page"]::before{height:0}

/* 轨道内 CTA */
.rail-cta{
  display:flex;
  flex-direction:column;
  gap:9px;
  margin-top:auto;
  padding-top:20px;
  border-top:1px solid var(--line);
}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:10px 18px;
  border:0;
  border-radius:var(--r-pill);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  line-height:1.3;
  letter-spacing:.02em;
  text-align:center;
  cursor:pointer;
  transition:background-color .18s var(--ease), color .18s var(--ease),
             box-shadow .18s var(--ease), transform .18s var(--ease);
}
.btn:active{transform:translateY(1px)}

.btn--primary{
  background:var(--orange);
  color:#0B1220;
  box-shadow:0 0 0 rgba(255,106,26,0);
}
.btn--primary:hover{
  background:#FF7F3C;
  box-shadow:0 10px 26px rgba(255,106,26,.34);
}

.btn--ghost{
  background:transparent;
  color:var(--paper);
  box-shadow:inset 0 0 0 1px var(--line);
}
.btn--ghost:hover{
  color:var(--cyan);
  box-shadow:inset 0 0 0 1px var(--cyan), 0 0 20px rgba(43,227,208,.18);
}

.btn--block{width:100%}

/* ---------- 9. 布局容器 ---------- */
.wrap{
  width:100%;
  max-width:var(--page-max);
  margin:0 auto;
  padding:0 var(--g3);
}
@media (min-width:1024px){
  .wrap{padding:0 var(--g4)}
}

.section{
  padding:var(--g4) 0;
}
@media (min-width:900px){
  .section{padding:var(--g5) 0}
}

.section--tint{
  background:linear-gradient(180deg, rgba(20,31,51,.92), rgba(20,31,51,.55));
  box-shadow:inset 0 1px 0 rgba(38,50,74,.9), inset 0 -1px 0 rgba(38,50,74,.9);
}

.section--slash{
  position:relative;
}
.section--slash::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:56px;
  pointer-events:none;
  background:linear-gradient(100deg, rgba(255,106,26,.12), rgba(43,227,208,.10) 60%, transparent);
  clip-path:polygon(0 0, 100% 0, 100% 0, 0 100%);
}

.grid{display:grid;gap:var(--g3)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}

@media (max-width:900px){
  .grid--7-5{grid-template-columns:minmax(0,1fr)}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 10. 章节题头 ---------- */
.sec-head{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-bottom:var(--g4);
}

.sec-head__idx{
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--orange);
}

.sec-head__title{
  font-family:var(--font-display);
  font-size:clamp(28px,4.4vw,40px);
  font-weight:900;
  line-height:1.15;
  letter-spacing:-.02em;
  color:var(--paper);
}

.sec-head__lead{
  max-width:62ch;
  font-size:17px;
  line-height:1.75;
  color:var(--mist);
}

/* ---------- 11. 面包屑 ---------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:var(--g3) 0 0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--mist);
}
.crumbs__item{
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.crumbs__item + .crumbs__item::before{
  content:"/";
  color:var(--line);
}
.crumbs a{
  color:var(--mist);
  transition:color .18s var(--ease);
}
.crumbs a:hover{color:var(--cyan)}
.crumbs [aria-current="page"]{color:var(--amber)}

/* ---------- 12. 正文容器 ---------- */
.prose{
  max-width:68ch;
  font-size:17px;
  line-height:1.75;
  color:var(--paper);
}
.prose h2{
  margin:var(--g4) 0 var(--g2);
  font-family:var(--font-display);
  font-size:26px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:-.01em;
}
.prose h3{
  margin:var(--g3) 0 var(--g1);
  font-family:var(--font-display);
  font-size:20px;
  font-weight:700;
  line-height:1.35;
}
.prose p{
  margin:0 0 var(--g2);
  color:var(--body-soft);
}
.prose ul{margin:0 0 var(--g2)}
.prose li{
  position:relative;
  margin-bottom:6px;
  padding-left:20px;
  color:var(--body-soft);
}
.prose li::before{
  content:"";
  position:absolute;
  left:0;
  top:.78em;
  width:8px;
  height:2px;
  border-radius:2px;
  background:var(--orange);
}
.prose a{
  color:var(--cyan);
  box-shadow:inset 0 -1px 0 rgba(43,227,208,.45);
  transition:color .18s var(--ease), box-shadow .18s var(--ease);
}
.prose a:hover{
  color:var(--amber);
  box-shadow:inset 0 -1px 0 rgba(255,176,32,.65);
}
.prose strong{color:var(--paper);font-weight:800}
.prose code{
  font-family:var(--font-mono);
  font-size:.92em;
  padding:2px 6px;
  border-radius:6px;
  background:rgba(43,227,208,.10);
  color:var(--cyan);
}

/* ---------- 13. 等宽数字工具 ---------- */
.mono{
  font-family:var(--font-mono);
  font-weight:500;
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}

/* ---------- 14. 可复用图片容器（页面阶段放图用） ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--r-lg);
  background:linear-gradient(140deg,var(--ink-2) 0%, var(--ink) 100%);
  isolation:isolate;
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:repeating-linear-gradient(
    0deg,
    rgba(43,227,208,.055) 0 1px,
    transparent 1px 5px
  );
}
.media > img,
.media > picture > img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(1.06) contrast(1.04);
}
.media--16x9{aspect-ratio:16 / 9}
.media--4x3{aspect-ratio:4 / 3}
.media--1x1{aspect-ratio:1 / 1}
.media--wide{aspect-ratio:21 / 9}
.media--portrait{aspect-ratio:3 / 4}
.media--pill{border-radius:var(--r-md)}

.media__cap{
  position:absolute;
  left:0;right:0;bottom:0;
  z-index:2;
  padding:14px 16px;
  font-size:13px;
  line-height:1.5;
  color:var(--paper);
  background:linear-gradient(0deg, rgba(11,18,32,.92), rgba(11,18,32,0));
}

/* ---------- 15. 页脚 ---------- */
.site-foot{
  position:relative;
  z-index:1;
  margin-top:var(--g5);
  padding:var(--g5) 0 var(--g3);
  overflow:hidden;
  background:linear-gradient(180deg,#0F1A2E 0%, #090F1C 100%);
  border-top:1px solid var(--line);
}
.site-foot::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:2px;
  opacity:.9;
  background:linear-gradient(90deg,var(--orange),var(--amber) 32%,var(--cyan) 68%,rgba(43,227,208,0));
}
.site-foot::after{
  content:"";
  position:absolute;
  right:-120px;
  bottom:-220px;
  width:520px;
  height:520px;
  pointer-events:none;
  background:radial-gradient(circle, rgba(43,227,208,.13), rgba(43,227,208,0) 66%);
}

.foot-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1.9fr) minmax(0,1.25fr);
  gap:var(--g4);
  align-items:start;
}

.foot-brand__name{
  font-family:var(--font-display);
  font-size:24px;
  font-weight:900;
  line-height:1.2;
  letter-spacing:-.02em;
  color:var(--paper);
}
.foot-brand__sub{
  margin-top:6px;
  font-size:13px;
  line-height:1.6;
  color:var(--mist);
}

.foot-badge{
  width:92px;
  height:92px;
  margin-top:22px;
  display:grid;
  place-content:center;
  gap:2px;
  text-align:center;
  border-radius:50%;
  border:1px dashed rgba(255,176,32,.45);
  background:radial-gradient(circle at 50% 28%, rgba(255,176,32,.16), rgba(255,176,32,0) 70%);
}
.foot-badge__num{
  font-family:var(--font-mono);
  font-size:20px;
  font-weight:500;
  letter-spacing:.04em;
  color:var(--amber);
  line-height:1.1;
}
.foot-badge__label{
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
  line-height:1.3;
}

.foot-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--g3);
}

.foot-col__title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--amber);
}

.foot-col__list li + li{margin-top:9px}

.foot-col__list a{
  display:inline-block;
  font-size:15px;
  color:var(--body-soft);
  transition:color .18s var(--ease), transform .18s var(--ease);
}
.foot-col__list a:hover{
  color:var(--cyan);
  transform:translateX(3px);
}

.foot-contact__list li{
  display:flex;
  gap:10px;
  font-size:14px;
  line-height:1.7;
  color:var(--body-soft);
  word-break:break-word;
}
.foot-contact__list li + li{margin-top:10px}

.foot-contact__key{
  flex:0 0 auto;
  min-width:34px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--orange);
  line-height:1.95;
}

.foot-contact__note{
  margin-top:14px;
  padding-left:12px;
  border-left:2px solid rgba(43,227,208,.45);
  font-size:13px;
  line-height:1.7;
  color:var(--mist);
}

.foot-base{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:var(--g1) var(--g3);
  margin-top:var(--g4);
  padding-top:var(--g3);
  border-top:1px solid var(--line);
  font-size:13px;
  line-height:1.7;
  color:var(--mist);
}
.foot-base__line{max-width:100%}
.foot-base__line--dim{color:var(--mist);opacity:.85}
.foot-base__icp{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
}

/* ---------- 16. 断点：平板 ---------- */
@media (max-width:1023px){
  .site-rail{
    top:0;left:0;right:0;bottom:auto;
    width:auto;
    height:64px;
    flex-direction:row;
    align-items:center;
    padding:0 16px;
    border-right:0;
    border-bottom:1px solid var(--line);
    background:rgba(11,18,32,.94);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
  }
  .site-rail::before{height:64px;background:linear-gradient(90deg, rgba(255,106,26,.22), rgba(43,227,208,.10) 60%, transparent)}
  .site-rail::after{display:none}

  .rail-inner{
    flex-direction:row;
    align-items:center;
    gap:12px;
    width:100%;
    height:64px;
  }

  .rail-brand{flex:1 1 auto;min-width:0;padding:0}
  .rail-brand__mark{width:34px;height:34px;border-radius:11px;font-size:17px}
  .rail-brand__name{font-size:16px}
  .rail-brand__sub{display:none}
  .rail-note{display:none}
  .rail-toggle{display:inline-flex}

  .rail-menu{
    position:fixed;
    top:64px;left:0;right:0;
    display:block;
    margin-top:0;
    padding:14px 16px 22px;
    max-height:calc(100vh - 64px);
    overflow-y:auto;
    background:rgba(9,15,28,.98);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 48px rgba(0,0,0,.45);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transform:translateY(-10px);
    transition:opacity .22s var(--ease), transform .22s var(--ease), visibility .22s var(--ease);
  }

  .site-rail[data-open] .rail-menu{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:translateY(0);
  }

  .rail-nav__list{gap:4px}
  .rail-nav__link{font-size:16px;padding:10px 14px;border-radius:16px}

  .rail-cta{
    margin-top:16px;
    padding-top:16px;
    border-top:1px solid var(--line);
  }

  .site-rail[data-open] .rail-toggle__bars > span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .site-rail[data-open] .rail-toggle__bars > span:nth-child(2){opacity:0}
  .site-rail[data-open] .rail-toggle__bars > span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

  .foot-inner{
    grid-template-columns:minmax(0,1fr) minmax(0,1.6fr);
    gap:var(--g4) var(--g3);
  }
  .foot-contact{grid-column:1 / -1}
}

/* ---------- 17. 断点：手机 ---------- */
@media (max-width:640px){
  body{font-size:16px}

  .wrap{padding:0 18px}

  .rail-toggle__label{display:none}
  .rail-toggle{padding:0 12px}

  .sec-head__lead{font-size:16px}
  .prose{font-size:16px}

  .foot-inner{grid-template-columns:minmax(0,1fr)}
  .foot-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--g3) var(--g2)}
  .foot-contact{grid-column:auto}

  .foot-base{flex-direction:column;align-items:flex-start}
  .foot-badge{width:84px;height:84px;margin-top:18px}
  .foot-badge__num{font-size:18px}
}

/* ---------- 18. 减弱动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .rail-note__dot{animation:none;opacity:1}
  body::before{animation:none}
}