/* =========================================================
   加拿大28中心 · 共享样式 /assets/site.css
   ========================================================= */

:root{
  --ink:#0A1020;
  --ink-2:#131C33;
  --ink-3:#0C1426;
  --paper:#F5EFE3;
  --paper-2:#E4DAC7;
  --maple:#E63946;
  --maple-deep:#B3252F;
  --aurora:#2FE0A6;
  --aurora-deep:#149E77;
  --gold:#F2B34B;
  --mist:#A9B4C6;
  --cyan:#59C7F2;

  --font-display:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:var(--font-display);
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;

  --fs-12:.75rem; --fs-14:.875rem; --fs-16:1rem; --fs-18:1.125rem;
  --fs-24:1.5rem; --fs-32:2rem; --fs-48:3rem; --fs-72:4.5rem; --fs-112:7rem;

  --rail-w:72px;
  --topbar-h:64px;
  --bottom-h:0px;
  --gutter:clamp(18px,4vw,44px);
  --maxw:1240px;
  --narrow:72ch;

  --r-sm:10px; --r-md:18px; --r-lg:28px; --r-pill:999px;

  --ease:cubic-bezier(.22,.61,.36,1);
  --pulse:3.2s;
}
:root.is-compact{ --rail-w:52px; }

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

/* ---------- 基础 ---------- */
body{
  min-height:100vh;
  background-color:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:var(--fs-16);
  line-height:1.75;
  letter-spacing:.005em;
  padding-left:var(--rail-w);
  padding-top:var(--topbar-h);
  padding-bottom:calc(var(--bottom-h) + env(safe-area-inset-bottom));
  overflow-x:hidden;
  transition:padding-left .32s var(--ease),padding-top .32s var(--ease);
}
body::before{
  content:"";
  position:fixed;
  inset:-20%;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(36% 40% at 12% 6%, rgba(47,224,166,.16), transparent 70%),
    radial-gradient(32% 36% at 88% 16%, rgba(230,57,70,.15), transparent 70%),
    radial-gradient(46% 44% at 72% 92%, rgba(89,199,242,.10), transparent 72%),
    radial-gradient(30% 30% at 40% 60%, rgba(242,179,75,.06), transparent 75%);
  animation:aurora-drift 20s ease-in-out infinite alternate;
}
body > *{position:relative;z-index:1}
@keyframes aurora-drift{
  from{transform:translate3d(-2%,-1%,0) scale(1)}
  to{transform:translate3d(2%,2%,0) scale(1.08)}
}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.25;letter-spacing:-.02em}
h1{font-size:clamp(2rem,5vw,3.5rem)}
h2{font-size:clamp(1.4rem,2.6vw,2rem)}
h3{font-size:1.125rem}
p{text-wrap:pretty}
::selection{background:var(--aurora);color:var(--ink)}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}

/* ---------- 布局工具 ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.container--narrow{max-width:calc(var(--narrow) + var(--gutter) * 2)}
.section{padding:clamp(44px,7vw,96px) 0}
.section--tight{padding:clamp(22px,4vw,46px) 0}
.section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;
  justify-content:space-between;gap:16px 28px;
  margin-bottom:clamp(20px,3vw,36px);
}
.stack{display:flex;flex-direction:column;gap:clamp(14px,2vw,24px)}
.band{
  height:6px;border-radius:var(--r-pill);
  background:linear-gradient(90deg,var(--maple),var(--gold) 42%,var(--aurora));
  opacity:.9;
}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid--asym{grid-template-columns:minmax(0,58fr) minmax(0,42fr)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.2em;
  color:var(--aurora);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;opacity:.85}
.mono{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.08em;color:var(--mist)}
.stat{
  display:block;font-family:var(--font-display);font-weight:800;
  font-size:clamp(2rem,6vw,4.5rem);line-height:1;letter-spacing:-.03em;color:var(--paper);
}
.stat--maple{color:var(--maple)}
.stat--aurora{color:var(--aurora)}
.stat--gold{color:var(--gold)}

.prose{max-width:var(--narrow);font-size:1.0625rem;line-height:1.85}
.prose p+p{margin-top:1em}
.prose h2{margin-top:1.7em;margin-bottom:.5em;font-size:var(--fs-24)}
.prose h3{margin-top:1.4em;margin-bottom:.4em;font-size:var(--fs-18)}
.prose ul,.prose ol{margin:1em 0;padding-left:1.4em;list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin:.35em 0}
.prose strong{color:var(--paper);font-weight:800}

.paper{
  background:var(--paper);color:#16233C;
  border-radius:var(--r-lg);
  padding:clamp(22px,4vw,56px);
  box-shadow:0 40px 80px -60px rgba(0,0,0,.95);
}
.paper h2,.paper h3{color:#0A1020}
.paper a{color:#0B5C7A;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.paper a:hover{color:var(--maple-deep)}
.paper .mono{color:#4A5A73}
.paper::selection,.paper ::selection{background:#0A1020;color:var(--paper)}
.paper--rule{border-left:6px solid var(--maple)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:0 24px;
  border:1px solid transparent;border-radius:var(--r-pill);
  font-size:.95rem;font-weight:700;letter-spacing:.03em;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),
             border-color .2s var(--ease),transform .2s var(--ease),
             box-shadow .2s var(--ease);
}
.btn--maple{background:var(--maple);color:#fff;box-shadow:0 16px 32px -20px rgba(230,57,70,.95)}
.btn--maple:hover{background:var(--maple-deep);transform:translateY(-1px)}
.btn--aurora{background:transparent;color:var(--aurora);border-color:rgba(47,224,166,.5)}
.btn--aurora:hover{background:rgba(47,224,166,.12);border-color:var(--aurora);transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--paper);border-color:rgba(169,180,198,.34)}
.btn--ghost:hover{border-color:var(--paper);background:rgba(245,239,227,.06)}
.btn--block{width:100%}

.text-link{
  color:var(--cyan);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
}
.text-link:hover{color:var(--aurora)}

/* ---------- 卡片与标签 ---------- */
.card{
  background:var(--ink-2);
  border:1px solid rgba(169,180,198,.16);
  border-radius:var(--r-lg);
  padding:clamp(20px,3vw,32px);
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{
  border-color:rgba(89,199,242,.42);
  transform:translateY(-3px);
  box-shadow:0 30px 54px -36px rgba(0,0,0,.95);
}
.card__title{font-size:1.125rem;font-weight:800;letter-spacing:-.01em}
.card--paper{background:var(--paper);color:#16233C;border-color:var(--paper-2)}
.card--paper .card__title{color:#0A1020}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;
  border:1px solid rgba(169,180,198,.3);color:var(--mist);
}
.tag--aurora{color:var(--aurora);border-color:rgba(47,224,166,.45);background:rgba(47,224,166,.08)}
.tag--gold{color:var(--gold);border-color:rgba(242,179,75,.45);background:rgba(242,179,75,.08)}
.tag--maple{color:#FF8A94;border-color:rgba(230,57,70,.5);background:rgba(230,57,70,.12)}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;
  overflow:hidden;
  display:block;
  border-radius:var(--r-lg);
  border:1px solid rgba(89,199,242,.16);
  background:
    linear-gradient(135deg,var(--ink-2),#0B1426 60%,#101B31);
  aspect-ratio:16/9;
}
.media::after{
  content:"";
  position:absolute;inset:0;
  background:
    repeating-linear-gradient(115deg, rgba(47,224,166,.08) 0 1px, transparent 1px 7px);
  opacity:.6;pointer-events:none;
}
.media__img,.media img{
  width:100%;height:100%;
  object-fit:cover;
  position:relative;z-index:1;
}
.media__caption{
  position:absolute;left:14px;bottom:12px;z-index:2;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;
  color:var(--paper);
  background:rgba(10,16,32,.72);
  padding:5px 12px;border-radius:var(--r-pill);
  backdrop-filter:blur(6px);
}
.media--wide{aspect-ratio:21/9}
.media--16x9{aspect-ratio:16/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media--maple{border-color:rgba(230,57,70,.4)}
.media--aurora{border-color:rgba(47,224,166,.4)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em;color:var(--mist);
}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb__list li+li::before{content:"/";margin-right:8px;color:rgba(169,180,198,.45)}
.breadcrumb a{color:var(--mist)}
.breadcrumb a:hover{color:var(--aurora)}
.breadcrumb [aria-current="page"]{color:var(--paper)}

/* ---------- 筛选组件 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:clamp(18px,2.5vw,28px)}
.filter-btn{
  min-height:40px;padding:0 16px;
  border:1px solid rgba(169,180,198,.28);
  border-radius:var(--r-pill);
  background:transparent;color:var(--mist);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;
  cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),
             background-color .2s var(--ease),transform .2s var(--ease);
}
.filter-btn:hover{color:var(--paper);border-color:rgba(245,239,227,.5)}
.filter-btn[aria-pressed="true"]{
  color:var(--ink);background:var(--aurora);border-color:var(--aurora);font-weight:700;
}

/* ---------- 头部 ---------- */
.site-header{position:relative;z-index:60}

.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 20px;border-radius:var(--r-pill);
  background:var(--aurora);color:var(--ink);
  font-weight:800;font-size:.85rem;
  transform:translateY(-180%);
  transition:transform .2s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}

/* 左侧脉冲导轨 */
.rail{
  position:fixed;top:0;left:0;bottom:0;z-index:90;
  width:var(--rail-w);
  display:flex;flex-direction:column;align-items:center;justify-content:space-between;
  gap:14px;
  padding:18px 5px 20px;
  background:linear-gradient(180deg,#0C1426 0%,#0A1020 58%,#0B1424 100%);
  border-right:1px solid rgba(89,199,242,.16);
  transition:width .32s var(--ease);
}
.rail::after{
  content:"";position:absolute;top:0;right:-1px;width:2px;height:100%;
  background:linear-gradient(180deg,transparent,var(--maple) 18%,var(--aurora) 64%,transparent);
  opacity:.7;pointer-events:none;
}
.rail__brand{display:flex;flex-direction:column;align-items:center;gap:14px;padding:4px 0}
.rail__mark{
  position:relative;display:block;width:28px;height:28px;
  border-radius:50% 8% 50% 8%;
  background:linear-gradient(135deg,var(--maple),var(--gold));
  box-shadow:0 0 20px -6px rgba(230,57,70,.9);
}
.rail__mark::after{
  content:"";position:absolute;inset:9px;border-radius:50% 8% 50% 8%;background:var(--ink);
}
.rail__name{
  writing-mode:vertical-rl;
  font-size:.8rem;font-weight:800;letter-spacing:.22em;color:var(--paper);
}
.rail-nav{flex:1 1 auto;display:flex;align-items:center;min-height:0}
.rail-nav__list{
  display:flex;flex-direction:column;align-items:center;gap:2px;
  max-height:100%;overflow-y:auto;scrollbar-width:none;
}
.rail-nav__list::-webkit-scrollbar{width:0}
.rail-nav__link{
  display:flex;flex-direction:column;align-items:center;gap:8px;
  min-width:44px;min-height:44px;
  padding:8px 5px;border-radius:var(--r-sm);
  color:var(--mist);font-size:.74rem;line-height:1;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.rail-nav__link::before{
  content:"";width:5px;height:5px;border-radius:50%;
  background:currentColor;opacity:.4;
  transition:background-color .2s var(--ease),box-shadow .2s var(--ease),opacity .2s var(--ease);
}
.rail-nav__label{writing-mode:vertical-rl;letter-spacing:.16em}
.rail-nav__link:hover{color:var(--paper);background-color:rgba(245,239,227,.06)}
.rail-nav__link:hover::before{opacity:1;background:var(--aurora)}
.rail-nav__link[aria-current="page"]{color:var(--paper);background-color:rgba(47,224,166,.1)}
.rail-nav__link[aria-current="page"]::before{
  opacity:1;background:var(--aurora);box-shadow:0 0 12px rgba(47,224,166,.85);
}
.rail__foot{display:flex;flex-direction:column;align-items:center;gap:8px}
.rail__pulse{
  width:8px;height:8px;border-radius:50%;background:var(--maple);
  animation:pulse-leaf var(--pulse) ease-in-out infinite;
}
.rail__foot-text{
  writing-mode:vertical-rl;
  font-family:var(--font-mono);font-size:.62rem;letter-spacing:.18em;color:var(--mist);
}
@keyframes pulse-leaf{
  0%,100%{box-shadow:0 0 0 0 rgba(230,57,70,.55)}
  50%{box-shadow:0 0 0 8px rgba(230,57,70,0)}
}

/* 顶部条 */
.topbar{
  position:fixed;top:0;left:var(--rail-w);right:0;z-index:80;
  height:var(--topbar-h);
  display:flex;align-items:center;gap:clamp(12px,2vw,26px);
  padding:0 var(--gutter);
  background:rgba(10,16,32,.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(169,180,198,.14);
  transition:left .32s var(--ease),height .32s var(--ease);
}
.topbar__brand{display:none;align-items:center;gap:10px}
.topbar__mark{
  display:block;width:20px;height:20px;border-radius:50% 8% 50% 8%;
  background:linear-gradient(135deg,var(--maple),var(--gold));flex:0 0 auto;
}
.topbar__name{font-weight:800;font-size:.98rem;letter-spacing:.02em}
.topbar__status{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;color:var(--mist);
}
.topbar__dot{
  width:7px;height:7px;border-radius:50%;background:var(--aurora);
  box-shadow:0 0 10px rgba(47,224,166,.9);
  animation:pulse-dot var(--pulse) ease-in-out infinite;
}
@keyframes pulse-dot{
  0%,100%{box-shadow:0 0 0 0 rgba(47,224,166,.45)}
  50%{box-shadow:0 0 0 7px rgba(47,224,166,0)}
}
.topbar__services{margin-left:auto;display:flex;align-items:center;gap:6px}
.topbar__service{
  display:inline-flex;align-items:center;min-height:40px;
  padding:0 14px;border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:.82rem;color:var(--mist);
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.topbar__service:hover{
  color:var(--paper);border-color:rgba(169,180,198,.3);background:rgba(19,28,51,.85);
}
.topbar__service[aria-current="page"]{color:var(--cyan);border-color:rgba(89,199,242,.45)}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:42px;padding:0 20px;margin-left:auto;
  border-radius:var(--r-pill);
  background:var(--maple);color:#fff;
  font-size:.85rem;font-weight:700;letter-spacing:.04em;
  box-shadow:0 14px 26px -16px rgba(230,57,70,.95);
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.header-cta:hover{background:var(--maple-deep);transform:translateY(-1px)}
.topbar__services + .header-cta{margin-left:6px}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:8px;
  min-width:44px;min-height:44px;padding:0 12px;
  border:1px solid rgba(169,180,198,.28);
  border-radius:var(--r-pill);
  color:var(--paper);font-size:.82rem;cursor:pointer;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--aurora);background:rgba(47,224,166,.08)}
.nav-toggle__bars{position:relative;width:18px;height:12px;flex:0 0 auto}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:100%;height:2px;border-radius:2px;
  background:currentColor;
  transition:transform .24s var(--ease),top .24s var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{top:10px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:5px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:5px;transform:rotate(-45deg)}

/* 移动端栏目面板 */
.nav-panel{
  position:fixed;
  top:var(--topbar-h);right:0;bottom:0;
  width:min(88vw,360px);
  z-index:85;
  display:none;
  flex-direction:column;gap:18px;
  padding:22px var(--gutter) calc(24px + env(safe-area-inset-bottom));
  background:linear-gradient(180deg,#0C1426,#0A1020);
  border-left:1px solid rgba(89,199,242,.2);
  box-shadow:-30px 0 70px -40px rgba(0,0,0,.95);
  overflow-y:auto;
  visibility:hidden;opacity:0;transform:translateX(14%);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease);
}
.nav-panel[data-open]{visibility:visible;opacity:1;transform:translateX(0)}
.nav-panel__list{display:flex;flex-direction:column}
.nav-panel__link{
  display:flex;align-items:center;gap:14px;
  min-height:54px;padding:6px 10px;
  border-bottom:1px solid rgba(169,180,198,.1);
  color:var(--paper);font-size:1.05rem;font-weight:600;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-panel__link:hover{color:var(--aurora);background:rgba(47,224,166,.06)}
.nav-panel__index{
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:var(--mist);
}
.nav-panel__link[aria-current="page"]{color:var(--aurora)}
.nav-panel__link[aria-current="page"] .nav-panel__index{color:var(--gold)}
.nav-panel__foot{margin-top:auto}

/* 移动端底部导航 */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:95;
  display:none;
  background:rgba(11,17,33,.95);
  backdrop-filter:blur(12px);
  border-top:1px solid rgba(89,199,242,.22);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-bar__list{display:grid;grid-template-columns:repeat(4,1fr)}
.mobile-bar__link{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  min-height:60px;padding:6px 2px;
  color:var(--mist);font-size:.68rem;letter-spacing:.04em;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.mobile-bar__link:hover,.mobile-bar__link[aria-current="page"]{color:var(--aurora)}
.mobile-bar__link[aria-current="page"]{background:rgba(47,224,166,.08)}
.mobile-bar__icon{position:relative;display:block;width:16px;height:16px;color:currentColor}
.mobile-bar__icon::before{
  content:"";position:absolute;inset:0;
  border:1.6px solid currentColor;border-radius:5px;
}
.mobile-bar__icon--dot::before{border-radius:50%}
.mobile-bar__icon--bars::before{
  border:0;border-top:1.6px solid currentColor;border-bottom:1.6px solid currentColor;
  border-radius:0;inset:3px 0;
}
.mobile-bar__icon--cut::before{border-radius:50% 4px 50% 4px}
.mobile-bar__link[aria-current="page"] .mobile-bar__icon::before{
  box-shadow:0 0 10px rgba(47,224,166,.7);
}

/* 滚动进度与返回顶部 */
.scroll-progress{
  position:fixed;top:calc(var(--topbar-h) - 2px);left:var(--rail-w);right:0;height:2px;
  z-index:88;pointer-events:none;
  background:rgba(169,180,198,.12);
  transition:left .32s var(--ease),top .32s var(--ease);
}
.scroll-progress__bar{
  display:block;width:100%;height:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--maple),var(--gold) 45%,var(--aurora));
}
.to-top{
  position:fixed;right:clamp(16px,3vw,34px);bottom:clamp(16px,3vw,34px);z-index:92;
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 18px;
  border:1px solid rgba(47,224,166,.42);
  border-radius:var(--r-pill);
  background:rgba(10,16,32,.86);
  backdrop-filter:blur(8px);
  color:var(--aurora);font-size:.8rem;letter-spacing:.06em;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:rgba(47,224,166,.14)}
.to-top__icon{font-size:1rem;line-height:1}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  background:linear-gradient(180deg,#0B1324 0%,#080D1A 100%);
  border-top:1px solid rgba(89,199,242,.18);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;width:min(360px,52%);height:2px;
  background:linear-gradient(90deg,var(--maple),var(--aurora),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr .95fr .95fr .9fr 1.4fr;
  gap:clamp(22px,3vw,44px);
  padding:clamp(40px,6vw,76px) 0 clamp(24px,3vw,40px);
}
.footer-brand__mark{
  display:block;width:34px;height:34px;margin-bottom:14px;
  border-radius:50% 8% 50% 8%;
  background:linear-gradient(135deg,var(--maple),var(--gold));
  box-shadow:0 0 24px -6px rgba(230,57,70,.85);
}
.footer-brand__name{font-size:1.25rem;font-weight:800;letter-spacing:-.01em}
.footer-brand__tag{
  margin-top:6px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;color:var(--aurora);
}
.footer-brand__desc{margin-top:14px;max-width:34ch;font-size:.86rem;color:var(--mist)}
.footer-col__title{
  margin-bottom:16px;padding-bottom:12px;
  border-bottom:1px solid rgba(169,180,198,.18);
  font-family:var(--font-mono);font-size:.72rem;font-weight:500;
  letter-spacing:.18em;color:var(--paper-2);text-transform:uppercase;
}
.footer-links{display:flex;flex-direction:column;gap:2px}
.footer-link{
  display:inline-flex;align-items:center;gap:8px;
  min-height:34px;padding:4px 0;
  font-size:.9rem;color:var(--mist);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-link::before{
  content:"";width:6px;height:1px;background:currentColor;opacity:.5;
  transition:width .2s var(--ease),opacity .2s var(--ease);
}
.footer-link:hover{color:var(--aurora);transform:translateX(2px)}
.footer-link:hover::before{width:14px;opacity:1}
.footer-link[aria-current="page"]{color:var(--paper)}
.copy-row{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  min-height:44px;padding:6px 0;
  border-bottom:1px dashed rgba(169,180,198,.16);
}
.copy-row__label{
  flex:0 0 40px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;color:var(--mist);
}
.copy-row__value{font-size:.88rem;color:var(--paper);word-break:break-all}
.copy-btn{
  margin-left:auto;flex:0 0 auto;
  min-height:32px;min-width:62px;padding:0 12px;
  border:1px solid rgba(89,199,242,.36);
  border-radius:var(--r-pill);
  color:var(--cyan);font-size:.72rem;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.copy-btn:hover{background:rgba(89,199,242,.12)}
.copy-btn.is-done{border-color:var(--aurora);color:var(--aurora);background:rgba(47,224,166,.1)}
.footer-contact__address{margin-top:14px;font-size:.84rem;color:var(--mist)}
.footer-contact__note{margin-top:10px;font-size:.8rem;line-height:1.7;color:var(--mist);opacity:.9}
.footer-legal{
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  padding:20px 0 30px;
  border-top:1px solid rgba(169,180,198,.14);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;color:var(--mist);
}

/* ---------- 显现 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:clamp(26px,3vw,38px)}
  .footer-brand{grid-column:1 / -1}
  .footer-contact{grid-column:1 / -1}
}

@media (max-width:900px){
  :root{--rail-w:0px;--topbar-h:58px;--bottom-h:62px;--gutter:18px}
  .rail{display:none}
  .topbar__status,.topbar__services,.header-cta{display:none}
  .topbar__brand{display:inline-flex}
  .nav-toggle{display:inline-flex;margin-left:auto}
  .nav-panel{display:flex}
  .mobile-bar{display:block}
  body{padding-left:0}
  .scroll-progress{left:0}
  .to-top{display:none}
  :root.nav-open,:root.nav-open body{overflow:hidden}
  h1{font-size:clamp(1.85rem,9vw,2.6rem)}
  .grid--3,.grid--4,.grid--asym{grid-template-columns:repeat(2,minmax(0,1fr))}
  .paper{border-radius:var(--r-md)}
}

@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr}
  .grid--2,.grid--3,.grid--4,.grid--asym{grid-template-columns:minmax(0,1fr)}
  .card{border-radius:var(--r-md)}
  .footer-legal{flex-direction:column;gap:8px}
}

/* ---------- 可访问性 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  body::before{animation:none}
  [data-reveal]{opacity:1;transform:none}
}