/* ============================================================
   非凡娱乐会馆 · /assets/site.css
   共享外壳：重置 / 变量 / 中文排版 / 头部 / 页脚 / 基础组件
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root{
  --midnight:#070B1E;
  --midnight-deep:#0B1230;
  --panel:#0E1533;
  --rail:#131C3F;
  --cyan:#22E0FF;
  --purple:#8B5CF6;
  --pink:#FF3D8B;
  --ink:#F2F5FF;
  --ink-2:#A9B6DC;
  --line:#1D2A57;
  --mint:#3DE0A8;
  --amber:#FFB84D;
  --rail-w:88px;
  --topbar-h:56px;
  --mobilebar-h:60px;
  --pad:clamp(18px,4vw,40px);
  --radius:14px;
  --shadow:0 4px 24px rgba(0,0,0,.45);
  --shadow-lift:0 10px 40px rgba(0,0,0,.58);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font:Inter,"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono",SFMono-Regular,ui-monospace,"Courier New",monospace;
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  background:var(--midnight);
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}
html.nav-open{overflow:hidden}
body{
  margin:0;
  min-height:100vh;
  padding-top:var(--mobilebar-h);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  background-color:var(--midnight);
  background-image:
    radial-gradient(72% 46% at 86% 0%,rgba(139,92,246,.20),transparent 72%),
    radial-gradient(60% 40% at 2% 100%,rgba(255,61,139,.13),transparent 72%),
    linear-gradient(180deg,var(--midnight) 0%,var(--midnight-deep) 100%);
}
img,svg{display:block;max-width:100%;height:auto}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.25;letter-spacing:.01em}
p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--cyan);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#82f2ff}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
[hidden]{display:none !important}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
::selection{background:rgba(255,61,139,.38);color:#fff}
.mono{font-family:var(--mono);letter-spacing:.02em}

/* ---------- 3. 通用容器与节奏 ---------- */
.container{width:100%;max-width:1440px;margin-inline:auto;padding-inline:var(--pad)}
.section{padding-block:56px}
.section--tight{padding-block:36px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}
.section-head{display:grid;gap:12px;margin-bottom:28px}
.section-title{
  display:flex;align-items:center;gap:14px;
  font-size:clamp(22px,2.6vw,32px);
  font-weight:600;letter-spacing:.01em;line-height:1.3;
}
.section-title::before{
  content:"";flex:none;width:4px;height:1em;border-radius:2px;
  background:linear-gradient(180deg,var(--purple),var(--pink));
}
.section-lead{max-width:62ch;font-size:15px;color:var(--ink-2)}

.grid{display:grid;gap:20px;grid-template-columns:minmax(0,1fr)}
.grid--2{display:grid;gap:20px;grid-template-columns:minmax(0,1fr)}
.grid--wide{display:grid;gap:20px;grid-template-columns:minmax(0,1fr)}

/* ---------- 4. 头部外壳 ---------- */
.site-header{position:relative;z-index:100}

.skip-link{
  position:fixed;top:10px;left:10px;z-index:300;
  padding:10px 18px;border-radius:999px;
  background:var(--cyan);color:#04101C;
  font-size:14px;font-weight:700;letter-spacing:.04em;
  transform:translateY(-180%);
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0);color:#04101C}

.read-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:220;
  background:rgba(29,42,87,.85);
}
.read-progress__fill{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--purple) 58%,var(--pink));
  box-shadow:0 0 12px rgba(34,224,255,.7);
}

/* 左侧轨道导航（移动端隐藏） */
.rail{display:none}

/* 顶部信息横条（移动端隐藏） */
.topbar{display:none}

/* 移动端顶部条 */
.mobilebar{
  position:fixed;top:0;left:0;right:0;height:var(--mobilebar-h);z-index:160;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-inline:16px;
  background:rgba(7,11,30,.9);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.mobilebar__brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.mobilebar__brand:hover{color:var(--ink)}
.mobilebar__dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--pink);box-shadow:0 0 12px var(--pink);
  animation:breathe 4s ease-in-out infinite;
}
.mobilebar__name{font-size:15px;font-weight:600;letter-spacing:.08em}

.pulse-btn{
  position:relative;
  display:inline-flex;align-items:center;gap:10px;
  padding:9px 16px;border-radius:999px;
  border:1px solid rgba(34,224,255,.5);
  background:rgba(34,224,255,.06);
  color:var(--ink);
  font-size:13px;letter-spacing:.12em;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.pulse-btn:hover{border-color:var(--cyan);color:var(--cyan)}
.pulse-btn__ring{
  width:9px;height:9px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 10px var(--cyan);
  animation:breathe 4s ease-in-out infinite;
}
.pulse-btn__label{line-height:1}
.pulse-btn[aria-expanded="true"]{
  border-color:rgba(255,61,139,.65);
  background:rgba(255,61,139,.12);
  color:var(--pink);
}
.pulse-btn[aria-expanded="true"] .pulse-btn__ring{background:var(--pink);box-shadow:0 0 10px var(--pink)}

/* 全屏抽屉 */
.drawer{
  position:fixed;inset:0;z-index:150;
  display:flex;flex-direction:column;gap:18px;
  padding:18px 20px calc(28px + env(safe-area-inset-bottom));
  overflow-y:auto;
  background-color:var(--midnight);
  background-image:
    radial-gradient(80% 40% at 90% 0%,rgba(139,92,246,.24),transparent 70%),
    linear-gradient(180deg,#0E1533 0%,#070B1E 58%,#131C3F 100%);
  border-left:3px solid transparent;
  visibility:hidden;opacity:0;transform:translateX(-24px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s linear;
}
.drawer[data-open]{visibility:visible;opacity:1;transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;gap:16px}
.drawer__title{font-size:12px;letter-spacing:.18em;color:var(--ink-2)}
.drawer__close{
  padding:8px 16px;border-radius:999px;
  border:1px solid rgba(255,61,139,.5);
  color:var(--pink);font-size:13px;letter-spacing:.08em;
}
.drawer__close:hover{background:rgba(255,61,139,.12)}
.drawer__quick{
  display:flex;flex-direction:column;gap:4px;
  padding:16px 18px;border-radius:var(--radius);
  border:1px solid rgba(139,92,246,.5);
  background:rgba(139,92,246,.12);
  box-shadow:var(--shadow);
}
.drawer__quick:hover{border-color:var(--purple);background:rgba(139,92,246,.2)}
.drawer__quick-k{font-size:12px;letter-spacing:.14em;color:var(--ink-2)}
.drawer__quick-v{font-size:16px;font-weight:600;color:var(--ink)}
.drawer__nav{flex:1}
.drawer__list{display:grid}
.drawer__item{border-bottom:1px solid var(--line)}
.drawer__link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 4px;
  font-size:18px;color:var(--ink);
}
.drawer__link::after{content:"›";font-family:var(--mono);color:var(--cyan);font-size:20px}
.drawer__link:hover{color:var(--cyan)}
.drawer__link[aria-current="page"]{color:var(--pink)}
.drawer__link[aria-current="page"]::after{color:var(--pink)}
.drawer__foot{
  display:grid;grid-template-columns:auto minmax(0,1fr);gap:6px 14px;
  padding-top:18px;border-top:1px solid var(--line);
  font-size:12.5px;
}
.drawer__foot-k{letter-spacing:.12em;color:var(--ink-2)}
.drawer__foot-v{color:var(--ink);overflow-wrap:anywhere}

/* ---------- 5. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:72px;
  background-image:linear-gradient(180deg,#0B1230 0%,#131C3F 100%);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(34,224,255,.5),rgba(255,61,139,.42),transparent);
}
.footer-wrap{
  width:100%;max-width:1440px;margin-inline:auto;
  padding:52px var(--pad) 24px;
  display:grid;grid-template-columns:minmax(0,1fr);gap:36px;
}
.footer-brand__name{font-size:20px;font-weight:700;letter-spacing:.08em;color:var(--ink)}
.footer-brand__line{margin-top:8px;font-size:13px;letter-spacing:.14em;color:var(--ink-2)}
.footer-contact{margin-top:20px;display:grid;gap:12px}
.footer-contact li{display:flex;flex-direction:column;gap:2px}
.footer-contact__k{font-size:12px;letter-spacing:.14em;color:var(--ink-2)}
.footer-contact__val{font-size:14px;color:var(--ink);overflow-wrap:anywhere}
.footer-contact__val--mono{font-family:var(--mono);color:var(--cyan);letter-spacing:.03em}
.footer-note{margin-top:16px;max-width:40ch;font-size:13px;line-height:1.7;color:var(--ink-2)}
.footer-col__title{
  display:flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.16em;color:var(--ink);
}
.footer-col__title::before{
  content:"";width:4px;height:14px;border-radius:2px;
  background:linear-gradient(180deg,var(--purple),var(--pink));
}
.footer-col__list{margin-top:16px;display:grid;gap:10px}
.footer-col__link{
  display:inline-block;
  font-size:14px;color:var(--ink-2);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col__link:hover{color:var(--cyan);transform:translateX(3px)}
.footer-bottom{
  grid-column:1 / -1;
  margin-top:8px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:8px 24px;
  font-size:12.5px;letter-spacing:.05em;color:var(--ink-2);
}
.footer-legal{font-family:var(--mono);color:var(--ink-2)}
.footer-copy{color:var(--ink-2)}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 26px;border-radius:999px;
  border:1px solid var(--line);
  background:var(--panel);color:var(--ink);
  font-size:15px;font-weight:600;letter-spacing:.04em;
  transition:transform .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn:hover{transform:translateY(-2px);color:var(--ink)}
.btn--pulse{
  border-color:transparent;color:#fff;
  background:linear-gradient(120deg,var(--pink),var(--purple));
  box-shadow:0 0 26px rgba(255,61,139,.35);
}
.btn--pulse:hover{color:#fff;box-shadow:0 0 34px rgba(255,61,139,.5)}
.btn--ghost{background:transparent;border-color:rgba(34,224,255,.45);color:var(--cyan)}
.btn--ghost:hover{color:var(--cyan);border-color:var(--cyan);background:rgba(34,224,255,.08)}
.btn--cyan{background:rgba(34,224,255,.12);border-color:rgba(34,224,255,.5);color:var(--cyan)}
.btn--cyan:hover{color:var(--cyan);background:rgba(34,224,255,.2)}
.btn--sm{padding:9px 18px;font-size:13px}

/* ---------- 7. 卡片 / 标签 / 统计 / 图形 ---------- */
.card{
  position:relative;
  padding:24px;border-radius:var(--radius);
  border:1px solid var(--line);
  background-image:linear-gradient(160deg,rgba(14,21,51,.96),rgba(19,28,63,.76));
  box-shadow:var(--shadow);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(34,224,255,.42);box-shadow:var(--shadow-lift)}
.card--soft{background-image:none;background-color:rgba(14,21,51,.6)}
.card--accent{border-color:rgba(255,61,139,.45)}
.card__label{display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--ink-2)}
.card__title{margin-top:10px;font-size:19px;font-weight:600;line-height:1.4}
.card__text{margin-top:10px;max-width:56ch;font-size:14.5px;color:var(--ink-2)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;white-space:nowrap;
  border:1px solid var(--line);background:rgba(19,28,63,.6);
  font-size:12px;letter-spacing:.08em;color:var(--ink-2);
}
.tag--purple{color:#c9b4ff;border-color:rgba(139,92,246,.5);background:rgba(139,92,246,.12)}
.tag--pink{color:#ff86b7;border-color:rgba(255,61,139,.5);background:rgba(255,61,139,.12)}
.tag--cyan{color:var(--cyan);border-color:rgba(34,224,255,.45);background:rgba(34,224,255,.1)}
.tag--mint{color:var(--mint);border-color:rgba(61,224,168,.45);background:rgba(61,224,168,.1)}
.tag--amber{color:var(--amber);border-color:rgba(255,184,77,.45);background:rgba(255,184,77,.1)}
.tag--mono{font-family:var(--mono);letter-spacing:.03em}

.stat{
  padding:20px 22px;border-radius:var(--radius);
  border:1px solid var(--line);background:rgba(14,21,51,.72);
}
.stat__num{font-family:var(--mono);font-size:clamp(28px,4vw,40px);font-weight:400;color:var(--ink)}
.stat__unit{margin-left:6px;font-size:14px;color:var(--ink-2)}
.stat__label{margin-top:6px;font-size:13px;letter-spacing:.06em;color:var(--ink-2)}
.stat--pink .stat__num{color:var(--pink)}
.stat--cyan .stat__num{color:var(--cyan)}

.pulse-ring{
  position:relative;
  display:inline-grid;place-items:center;
  width:148px;height:148px;border-radius:50%;
  border:1px solid rgba(34,224,255,.45);
  background:radial-gradient(circle at 50% 50%,rgba(139,92,246,.24),transparent 70%);
}
.pulse-ring::before,
.pulse-ring::after{
  content:"";position:absolute;inset:-1px;border-radius:50%;
  border:1px solid rgba(255,61,139,.45);
  animation:breathe 4s ease-in-out infinite;
}
.pulse-ring::after{inset:-18px;border-color:rgba(34,224,255,.28);animation-delay:1.2s}
.pulse-ring__value{font-family:var(--mono);font-size:26px;color:var(--pink)}
.pulse-ring__label{font-size:12px;letter-spacing:.16em;color:var(--ink-2)}

/* ---------- 8. 图片容器（页面阶段放图） ---------- */
.media-frame{
  position:relative;overflow:hidden;isolation:isolate;
  border-radius:var(--radius);border:1px solid var(--line);
  background-image:linear-gradient(150deg,#0E1533,#131C3F 55%,#0B1230);
  box-shadow:var(--shadow);
}
.media-frame__img{width:100%;height:100%;aspect-ratio:16 / 10;object-fit:cover}
.media-frame--wide .media-frame__img{aspect-ratio:21 / 9}
.media-frame--tall .media-frame__img{aspect-ratio:4 / 5}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 16px;
  font-size:12.5px;color:var(--ink-2);
  background:linear-gradient(180deg,transparent,rgba(7,11,30,.88));
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(180deg,rgba(34,224,255,.05) 0 1px,transparent 1px 5px);
}

/* ---------- 9. 面包屑 ---------- */
.breadcrumbs{margin-bottom:20px}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px}
.breadcrumbs__item{display:flex;align-items:center;gap:8px;color:var(--ink-2)}
.breadcrumbs__item + .breadcrumbs__item::before{content:"/";color:var(--line)}
.breadcrumbs__link{color:var(--ink-2)}
.breadcrumbs__link:hover{color:var(--cyan)}
.breadcrumbs__current{color:var(--ink)}

/* ---------- 10. 标签页 / 手风琴 / 筛选 / 复制 ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:8px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.tab{
  padding:9px 16px;border-radius:999px;
  border:1px solid var(--line);
  font-size:13.5px;letter-spacing:.06em;color:var(--ink-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.tab:hover{color:var(--ink);border-color:rgba(34,224,255,.4)}
.tab[aria-selected="true"]{color:var(--cyan);border-color:rgba(34,224,255,.55);background:rgba(34,224,255,.1)}
.panel{padding-top:24px}
.panel.is-active{animation:fadeUp .24s var(--ease) both}

.accordion{margin-top:8px;border-top:1px solid var(--line)}
.accordion__item{border-bottom:1px solid var(--line)}
.accordion__trigger{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  width:100%;padding:20px 4px;
  font-size:16.5px;font-weight:500;color:var(--ink);text-align:left;
  transition:color .2s var(--ease);
}
.accordion__trigger:hover{color:var(--cyan)}
.accordion__trigger::after{content:"＋";flex:none;font-family:var(--mono);color:var(--cyan)}
.accordion__item.is-open .accordion__trigger{color:var(--pink)}
.accordion__item.is-open .accordion__trigger::after{content:"－";color:var(--pink)}
.accordion__panel{padding:0 4px 22px;max-width:66ch;font-size:15px;color:var(--ink-2)}

.filter-bar{display:flex;flex-wrap:wrap;gap:8px}
.filter-chip{
  padding:8px 15px;border-radius:999px;
  border:1px solid var(--line);
  font-size:13px;letter-spacing:.06em;color:var(--ink-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.filter-chip:hover{color:var(--ink);border-color:rgba(34,224,255,.4)}
.filter-chip[aria-pressed="true"]{color:var(--pink);border-color:rgba(255,61,139,.55);background:rgba(255,61,139,.1)}

.copy-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;
  border:1px dashed rgba(34,224,255,.45);
  font-size:12.5px;letter-spacing:.06em;color:var(--cyan);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.copy-btn:hover{background:rgba(34,224,255,.08)}
.copy-btn.is-copied{color:var(--mint);border-style:solid;border-color:rgba(61,224,168,.6);background:rgba(61,224,168,.1)}

/* ---------- 11. 状态与动效 ---------- */
.is-hidden{display:none !important}
.js-reveal [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.js-reveal [data-reveal].is-visible{opacity:1;transform:none}

@keyframes breathe{0%,100%{opacity:.45}50%{opacity:1}}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ---------- 12. 平板 ---------- */
@media (min-width:768px){
  .section{padding-block:72px}
  .section--tight{padding-block:48px}
  .section-head{margin-bottom:36px}
  .grid,.grid--2,.grid--wide{gap:22px}
  .grid,.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-wrap{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px 32px;padding-top:64px}
  .footer-brand{grid-column:1 / -1}
}

/* ---------- 13. 桌面：轨道导航 + 顶部横条 ---------- */
@media (min-width:1024px){
  body{
    padding-left:var(--rail-w);
    padding-top:var(--topbar-h);
    background-attachment:fixed;
  }
  .section{padding-block:96px}
  .section--tight{padding-block:56px}
  .section-head{margin-bottom:44px}
  .grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--wide{grid-template-columns:1.4fr minmax(0,1fr)}
  .mobilebar{display:none}
  .drawer{display:none}

  .read-progress{left:var(--rail-w)}

  .rail{
    position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);z-index:180;
    display:flex;flex-direction:column;align-items:center;gap:20px;
    padding:22px 0 26px;
    background-color:var(--rail);
    background-image:
      repeating-linear-gradient(180deg,rgba(34,224,255,.05) 0 1px,transparent 1px 6px),
      linear-gradient(180deg,#0E1533 0%,#131C3F 55%,#0B1230 100%);
    border-right:1px solid var(--line);
  }
  .rail::after{
    content:"";position:absolute;top:0;bottom:0;right:-1px;width:1px;
    background:linear-gradient(180deg,transparent,rgba(34,224,255,.55),transparent);
  }
  .rail__brand{display:flex;flex-direction:column;align-items:center;gap:12px;color:var(--ink)}
  .rail__brand:hover{color:var(--ink)}
  .rail__pulse{
    width:34px;height:34px;border-radius:50%;
    background:radial-gradient(circle at 50% 45%,var(--pink),var(--purple) 72%);
    box-shadow:0 0 18px rgba(255,61,139,.55);
    animation:breathe 4s ease-in-out infinite;
  }
  .rail__brand-text{
    writing-mode:vertical-rl;
    font-size:14px;font-weight:600;letter-spacing:.32em;color:var(--ink);
  }
  .rail__nav{
    flex:1;min-height:0;display:flex;align-items:center;justify-content:center;
  }
  .rail__list{display:flex;flex-direction:column;align-items:center;gap:8px}
  .rail__item{width:100%}
  .rail__link{
    display:block;
    writing-mode:vertical-rl;
    padding:11px 7px;border-radius:999px;
    font-size:13px;letter-spacing:.14em;color:var(--ink-2);
    transition:color .2s var(--ease),background .2s var(--ease);
  }
  .rail__link:hover{color:var(--cyan);background:rgba(34,224,255,.08)}
  .rail__link[aria-current="page"]{
    color:var(--pink);
    background:rgba(255,61,139,.12);
    box-shadow:inset 0 0 0 1px rgba(255,61,139,.35);
  }
  .rail__cta{
    writing-mode:vertical-rl;
    padding:16px 7px;border-radius:999px;
    border:1px solid rgba(255,61,139,.6);
    font-size:13px;letter-spacing:.16em;color:var(--pink);
    transition:background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
  }
  .rail__cta:hover{color:#fff;background:linear-gradient(180deg,var(--pink),var(--purple));box-shadow:0 0 24px rgba(255,61,139,.45)}

  .topbar{
    position:fixed;top:0;left:var(--rail-w);right:0;height:var(--topbar-h);z-index:170;
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding-inline:clamp(24px,3vw,40px);
    background:rgba(7,11,30,.78);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .topbar__tagline{font-size:13px;letter-spacing:.2em;color:var(--ink-2)}
  .topbar__meta{display:flex;align-items:center;gap:14px;font-size:13px}
  .topbar__link{font-size:13px;letter-spacing:.06em}

  .footer-wrap{grid-template-columns:1.6fr repeat(3,minmax(0,1fr));gap:56px 32px;padding-block:72px 26px}
  .footer-brand{grid-column:auto}
}

/* ---------- 14. 矮屏压缩轨道 ---------- */
@media (min-width:1024px) and (max-height:780px){
  .rail{gap:12px;padding-block:16px}
  .rail__link{font-size:11.5px;padding:8px 5px}
  .rail__cta{font-size:11.5px;padding:12px 5px}
  .rail__brand-text{font-size:12px;letter-spacing:.24em}
}

/* ---------- 15. 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;
  }
  .js-reveal [data-reveal]{opacity:1;transform:none}
  .read-progress__fill{transition:none}
}