/* ============================================================
   华体汇指南 · 共享 Site Kit
   轨道 / 框景 / 竞技场服务台
   ============================================================ */

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

/* ---------- 2. Tokens ---------- */
:root{
  --arena-red:#C8102E;
  --clay:#B75A3C;
  --deep:#071A2F;
  --midnight:#0E2A47;
  --neon:#23E6D3;
  --amber:#FF8A3D;
  --moss:#557A5B;
  --slate:#5C6670;
  --paper:#F7F0E4;
  --ink:#1B1F24;
  --white:#FFFFFF;

  --line:rgba(27,31,36,.14);
  --line-strong:rgba(27,31,36,.28);
  --line-light:rgba(247,240,228,.16);
  --paper-72:rgba(247,240,228,.72);
  --paper-55:rgba(247,240,228,.55);

  --rail-w:232px;
  --wrap:1180px;
  --hdr-h:64px;

  --font-display:"HarmonyOS Sans SC","Source Han Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"HarmonyOS Sans SC","Source Han Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:190ms;
  --dur-slow:420ms;
}

/* ---------- 3. Base & 中文排版 ---------- */
html{background:var(--paper)}
body{
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.02em;
  color:var(--ink);
}
h1{font-size:clamp(36px,6vw,72px);line-height:1.04;letter-spacing:-.03em}
h2{font-size:clamp(26px,3.6vw,44px)}
h3{font-size:clamp(19px,2vw,26px);line-height:1.3}
h4{font-size:17px;line-height:1.4}
small{font-size:13px}
strong,b{font-weight:700}
::selection{background:var(--arena-red);color:var(--white)}

/* 焦点：暖橙 + 深空蓝双层描边 */
:focus-visible{
  outline:2px solid var(--amber);
  outline-offset:2px;
  box-shadow:0 0 0 5px rgba(7,26,47,.55);
}

@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}

/* ---------- 4. 跳至主内容 ---------- */
.skip-link{
  position:fixed;
  top:8px;left:8px;
  z-index:300;
  display:inline-block;
  padding:10px 16px;
  background:var(--white);
  color:var(--deep);
  border:2px solid var(--deep);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  transform:translateY(-180%);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 5. 头部轨道 ---------- */
.arena-header{
  position:sticky;
  top:0;
  z-index:120;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:0 10px;
  min-height:var(--hdr-h);
  padding:10px 16px;
  background:var(--deep);
  color:var(--paper);
  border-bottom:1px solid rgba(35,230,211,.22);
}
.rail-head{
  grid-column:1;
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
}
.brand-mark{
  display:flex;
  align-items:center;
  gap:11px;
  min-width:0;
}
.brand-mark__glyph{
  display:grid;
  place-items:center;
  flex:none;
  width:38px;height:38px;
  background:var(--arena-red);
  color:var(--white);
  font-family:var(--font-mono);
  font-weight:700;
  font-size:17px;
  letter-spacing:-.04em;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.28);
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.brand-mark:hover .brand-mark__glyph{
  background:var(--amber);
  color:var(--deep);
  box-shadow:inset 0 0 0 1px rgba(7,26,47,.3);
}
.brand-mark__text{display:flex;flex-direction:column;gap:1px;min-width:0}
.brand-mark__name{
  font-family:var(--font-display);
  font-weight:800;
  font-size:16px;
  line-height:1.2;
  letter-spacing:.02em;
  color:var(--white);
}
.brand-mark__desc{
  font-family:var(--font-mono);
  font-size:10px;
  line-height:1.4;
  letter-spacing:.06em;
  color:var(--paper-55);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.rail-label{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--neon);
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:12px;
}
.rail-label::after{
  content:"";
  flex:1;
  height:1px;
  background:linear-gradient(90deg,rgba(35,230,211,.5),transparent);
}

/* 移动端菜单按钮 */
.nav-toggle{
  grid-column:2;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 10px;
  border:1px solid rgba(247,240,228,.32);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-toggle:hover,.nav-toggle:focus-visible{border-color:var(--neon);color:var(--neon);background:rgba(35,230,211,.08)}
.nav-toggle__bars{display:grid;gap:3px;width:16px}
.nav-toggle__bars span{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.arena-header[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.arena-header[data-open] .nav-toggle__bars span:nth-child(2){opacity:0}
.arena-header[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-toggle__text{line-height:1}

/* ---------- 6. 轨道导航（移动端为抽屉） ---------- */
.rail-nav{
  grid-column:1 / -1;
  position:fixed;
  top:var(--hdr-h);
  left:0;right:0;
  max-height:calc(100dvh - var(--hdr-h));
  overflow-y:auto;
  overscroll-behavior:contain;
  padding:16px 16px 26px;
  background:var(--midnight);
  border-bottom:3px solid var(--neon);
  box-shadow:0 34px 60px -30px rgba(0,0,0,.85);
  opacity:0;
  visibility:hidden;
  transform:translateY(-10px);
  pointer-events:none;
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) linear;
}
.arena-header[data-open] .rail-nav{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
  pointer-events:auto;
}
.rail-nav__list{display:flex;flex-direction:column;gap:2px}
.rail-nav__item{min-width:0}
.rail-link{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding:11px 12px 11px 14px;
  border-left:2px solid rgba(247,240,228,.14);
  color:rgba(247,240,228,.78);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),
             background var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.rail-link__num{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
  color:rgba(35,230,211,.7);
  font-variant-numeric:tabular-nums;
}
.rail-link__label{min-width:0}
.rail-link:hover,.rail-link:focus-visible{
  color:var(--white);
  border-left-color:var(--amber);
  background:rgba(255,138,61,.1);
  transform:translateX(2px);
}
.rail-link[aria-current="page"]{
  color:var(--white);
  border-left-color:var(--neon);
  background:linear-gradient(90deg,rgba(200,16,46,.34),rgba(200,16,46,0));
}
.rail-link[aria-current="page"] .rail-link__num{color:var(--neon)}

/* 轨道底部：版本、行动、说明 */
.rail-actions{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-top:20px;
  padding-top:18px;
  border-top:1px solid var(--line-light);
}
.version-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  align-self:flex-start;
  padding:5px 9px;
  border:1px solid rgba(35,230,211,.42);
  background:rgba(35,230,211,.08);
  color:var(--neon);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.version-chip__dot{
  width:6px;height:6px;
  flex:none;
  background:var(--neon);
  box-shadow:0 0 0 3px rgba(35,230,211,.18);
}
.rail-note{
  margin-top:6px;
  font-family:var(--font-mono);
  font-size:10px;
  line-height:1.8;
  letter-spacing:.05em;
  color:var(--paper-55);
}

/* ---------- 7. 阅读进度 ---------- */
.rail-progress{
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:rgba(247,240,228,.14);
  overflow:hidden;
}
.rail-progress__label{display:none}
.rail-progress__track{height:100%;background:transparent}
.rail-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--arena-red),var(--amber) 55%,var(--neon));
  transition:width 120ms linear;
}
.rail-progress__pct{color:var(--neon)}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  border:1px solid transparent;
  border-radius:0;
  font-family:var(--font-display);
  font-size:14px;
  font-weight:700;
  letter-spacing:.05em;
  line-height:1.2;
  text-align:center;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn--primary{background:var(--arena-red);color:var(--white);border-color:var(--arena-red)}
.btn--primary:hover,.btn--primary:focus-visible{
  background:#a50d26;
  border-color:var(--amber);
  transform:translateY(-1px);
}
.btn--ghost{background:transparent;color:var(--paper);border-color:rgba(247,240,228,.34)}
.btn--ghost:hover,.btn--ghost:focus-visible{
  color:var(--neon);
  border-color:var(--neon);
  background:rgba(35,230,211,.1);
  transform:translateY(-1px);
}
.btn--block{width:100%}
.cta-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:22px;
}

/* ---------- 9. 页脚 ---------- */
.arena-footer{
  position:relative;
  background:var(--deep);
  color:var(--paper-72);
  border-top:3px solid var(--arena-red);
  overflow:hidden;
}
.arena-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(35,230,211,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(35,230,211,.07) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.85;
}
.arena-footer > .wrap{position:relative;z-index:1}

.footer-top{
  display:grid;
  gap:40px;
  padding-block:clamp(44px,6vw,76px) clamp(28px,4vw,44px);
}
.footer-brand{min-width:0}
.footer-brand__line{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(20px,2.4vw,26px);
  line-height:1.25;
  letter-spacing:-.01em;
  color:var(--white);
}
.footer-brand__summary{
  margin-top:12px;
  max-width:38ch;
  font-size:15px;
  line-height:1.8;
  color:var(--paper-72);
}
.footer-stamp{
  margin-top:18px;
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.9;
  letter-spacing:.06em;
  color:var(--paper-55);
}
.footer-stamp .mono-label{color:var(--neon);margin-right:6px}

.footer-cols{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:30px 20px;
}
.footer-col{min-width:0}
.footer-col--contact{grid-column:1 / -1}
.footer-col__title{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--neon);
}
.footer-col__title::before{
  content:"";
  width:12px;
  height:2px;
  flex:none;
  background:var(--arena-red);
}
.footer-list{display:flex;flex-direction:column;gap:9px}
.footer-link{
  display:inline-block;
  font-size:15px;
  color:rgba(247,240,228,.82);
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-link:hover,.footer-link:focus-visible{
  color:var(--amber);
  border-bottom-color:var(--amber);
  transform:translateX(2px);
}
.footer-list--contact{gap:10px}
.footer-contact__row{
  display:grid;
  grid-template-columns:44px minmax(0,1fr);
  gap:8px;
  align-items:baseline;
  font-size:14px;
}
.footer-contact__label{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--neon);
}
.footer-contact__value{
  color:rgba(247,240,228,.88);
  word-break:break-word;
  overflow-wrap:anywhere;
}
.footer-note{
  margin-top:14px;
  max-width:38ch;
  font-size:12.5px;
  line-height:1.75;
  color:var(--paper-55);
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  padding-block:16px;
  border-top:1px solid var(--line-light);
}
.footer-legal__link{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:rgba(247,240,228,.72);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
  border-bottom:1px solid transparent;
}
.footer-legal__link:hover,.footer-legal__link:focus-visible{
  color:var(--neon);
  border-bottom-color:var(--neon);
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 24px;
  padding-block:16px 28px;
  border-top:1px solid var(--line-light);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--paper-55);
}
.footer-icp,.footer-copy{margin:0}
.to-top{
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  border:1px solid rgba(247,240,228,.3);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--paper);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.to-top:hover,.to-top:focus-visible{
  color:var(--amber);
  border-color:var(--amber);
  background:rgba(255,138,61,.1);
}

/* ---------- 10. 布局基元 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:clamp(16px,4vw,48px);
}
.prose{
  max-width:68ch;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
}
.prose p + p{margin-top:1.1em}
.prose h2,.prose h3{margin-top:1.8em;margin-bottom:.6em}
.prose ul,.prose ol{margin:1em 0;padding-left:1.2em}
.prose ul{list-style:square}
.prose li{margin-bottom:.4em}

.section{padding-block:clamp(48px,7vw,96px)}
.section--tight{padding-block:clamp(32px,4.5vw,60px)}
.section--dark{background:var(--deep);color:var(--paper)}
.section--dark h1,.section--dark h2,.section--dark h3{color:var(--white)}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--clay);
}
.eyebrow::before{content:"";width:22px;height:2px;flex:none;background:var(--arena-red)}
.section--dark .eyebrow{color:var(--neon)}

.section__head{
  display:flex;
  flex-direction:column;
  gap:14px;
  max-width:64ch;
  margin-bottom:clamp(24px,4vw,44px);
}
.section__title{font-size:clamp(26px,3.4vw,42px);font-weight:800;line-height:1.14}
.section__lead{font-size:16px;line-height:1.8;color:var(--slate);max-width:60ch}
.section--dark .section__lead{color:var(--paper-72)}

.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
@media (min-width:640px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1024px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
}

/* ---------- 11. 组件 ---------- */
.mono-label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--clay);
}
.rule{
  height:1px;
  border:0;
  background:var(--line);
  margin-block:clamp(24px,4vw,44px);
}

.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:clamp(18px,2.4vw,28px);
  background:var(--white);
  border:1px solid var(--line);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease);
}
.card:hover,.card:focus-within{
  border-color:var(--arena-red);
  transform:translateY(-3px);
  box-shadow:0 20px 44px -30px rgba(7,26,47,.6);
}
.card--tilt{transform:rotate(-1deg)}
.card--tilt:nth-child(even){transform:rotate(1deg)}
.card--tilt:hover,.card--tilt:focus-within{transform:rotate(0) translateY(-3px)}
.card--dark{
  background:var(--midnight);
  color:var(--paper-72);
  border-color:rgba(35,230,211,.24);
}
.card--dark .card__title{color:var(--white)}
.card__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--clay);
}
.card--dark .card__label{color:var(--neon)}
.card__title{font-size:clamp(18px,2vw,22px);font-weight:800;color:var(--ink)}
.card__text{font-size:15px;line-height:1.8;color:var(--slate)}
.card--dark .card__text{color:var(--paper-72)}

.status{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:4px 9px;
  border:1px solid currentColor;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
  text-transform:uppercase;
  white-space:nowrap;
}
.status::before{content:"";width:6px;height:6px;flex:none;background:currentColor}
.status--live{color:var(--arena-red);background:rgba(200,16,46,.08)}
.status--pending{color:var(--clay);background:rgba(183,90,60,.1)}
.status--confirm{color:var(--moss);background:rgba(85,122,91,.12)}

.img-frame{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(135deg,var(--midnight) 0%,var(--deep) 60%,#04101d 100%);
  border:1px solid var(--line);
  isolation:isolate;
}
.img-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(35,230,211,.12) 1px,transparent 1px),
    linear-gradient(90deg,rgba(35,230,211,.12) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:.55;
  z-index:-1;
}
.img-frame > img,.img-frame > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.img-frame--wide{aspect-ratio:16/9}
.img-frame--square{aspect-ratio:1/1}
.img-frame--tall{aspect-ratio:4/5}
.img-frame__tag{
  position:absolute;
  left:0;bottom:0;
  padding:6px 11px;
  background:var(--arena-red);
  color:var(--white);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  text-transform:uppercase;
}

/* 面包屑 */
.breadcrumbs{
  padding-top:clamp(18px,3vw,28px);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs__item{display:flex;align-items:center;gap:8px;color:var(--slate);min-width:0}
.breadcrumbs__item + .breadcrumbs__item::before{content:"/";color:var(--clay)}
.breadcrumbs__link{color:var(--slate);border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.breadcrumbs__link:hover,.breadcrumbs__link:focus-visible{color:var(--arena-red);border-bottom-color:var(--arena-red)}
.breadcrumbs__current{color:var(--ink);font-weight:600}

/* ---------- 12. 滚动显现 ---------- */
.reveal-ready [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity var(--dur-slow) var(--ease),transform var(--dur-slow) var(--ease);
  will-change:opacity,transform;
}
.reveal-ready [data-reveal].is-visible{
  opacity:1;
  transform:none;
  will-change:auto;
}

/* ---------- 13. 桌面：固定轨道 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}

  .arena-header{
    position:fixed;
    inset:0 auto 0 0;
    width:var(--rail-w);
    min-height:0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:26px 20px 20px;
    border-bottom:0;
    border-right:1px solid rgba(35,230,211,.2);
    overflow-y:auto;
    overflow-x:hidden;
  }
  .rail-head{flex-direction:column;align-items:flex-start;gap:16px;flex:none}
  .brand-mark__desc{white-space:normal;overflow:visible;text-overflow:clip}
  .nav-toggle{display:none}

  .rail-nav{
    position:static;
    inset:auto;
    width:auto;
    max-height:none;
    overflow:visible;
    display:flex;
    flex-direction:column;
    flex:1 1 auto;
    margin:0;
    padding:26px 0 0;
    background:transparent;
    border:0;
    box-shadow:none;
    opacity:1;
    visibility:visible;
    transform:none;
    pointer-events:auto;
  }
  .rail-label{display:flex;margin-bottom:12px}
  .rail-link{padding:10px 10px 10px 12px;font-size:14.5px}
  .rail-actions{margin-top:auto;padding-top:24px}

  .rail-progress{
    position:static;
    flex:none;
    height:auto;
    margin-top:20px;
    background:none;
    overflow:visible;
  }
  .rail-progress__label{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:8px;
    margin-bottom:8px;
    font-family:var(--font-mono);
    font-size:10px;
    letter-spacing:.14em;
    text-transform:uppercase;
    color:var(--paper-55);
  }
  .rail-progress__track{height:3px;background:rgba(247,240,228,.16)}

  .footer-top{grid-template-columns:minmax(0,1fr) minmax(0,1.35fr);gap:clamp(32px,5vw,64px)}
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
  .footer-col--contact{grid-column:auto}
}

@media (min-width:620px) and (max-width:1023px){
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-col--contact{grid-column:auto}
}

@media (max-width:559px){
  .brand-mark__desc{display:none}
  .footer-cols{grid-template-columns:1fr}
  .footer-col--contact{grid-column:auto}
  .footer-bottom{font-size:10.5px}
  .to-top{margin-left:0;width:100%;justify-content:center}
}

/* ---------- 14. 减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal-ready [data-reveal]{opacity:1 !important;transform:none !important}
  .card--tilt,.card--tilt:nth-child(even){transform:none}
}