/* ============================================================
   奇亿测速 · 共享站点样式  /assets/site.css
   深海蓝控制面板 + 奶油纸面内容层 + 信号青 / 琥珀 / 珊瑚
   ============================================================ */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:112px}
body{margin:0}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0}
img,svg,video,canvas{max-width:100%;height:auto;display:block}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit}
table{border-collapse:collapse}
:where(ul[class],ol[class]){list-style:none}
summary{list-style:none}
summary::-webkit-details-marker{display:none}

/* ---------- 2. tokens ---------- */
:root{
  --qx-deep:#081826;
  --qx-panel:#0E2438;
  --qx-glass:rgba(18,46,68,0.62);
  --qx-glass-strong:rgba(9,28,43,0.9);
  --qx-cyan:#2FD4C6;
  --qx-cyan-soft:#8AE6DD;
  --qx-amber:#F2B441;
  --qx-coral:#F2634B;
  --qx-ok:#57C785;
  --qx-cream:#F3EBDD;
  --qx-paper-line:#D8CDBB;
  --qx-ink:#EAF2F5;
  --qx-muted:#9AB0BD;
  --qx-ink-dark:#12232E;
  --qx-ink-mid:#3B4E58;
  --qx-ink-soft:#5E6F78;
  --qx-teal-dark:#0E7A72;

  --qx-r-lg:22px;
  --qx-r-md:14px;
  --qx-r-sm:8px;
  --qx-shadow:0 18px 46px rgba(2,10,18,0.45);
  --qx-hairline:1px solid rgba(47,212,198,0.2);

  --qx-wrap:1220px;
  --qx-gutter:clamp(18px,4vw,40px);

  --qx-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --qx-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}

/* ---------- 3. base ---------- */
body{
  padding-top:114px;
  background-color:var(--qx-deep);
  background-image:
    radial-gradient(1080px 500px at 84% -10%, rgba(47,212,198,0.13), transparent 62%),
    radial-gradient(720px 400px at 2% 4%, rgba(242,180,65,0.075), transparent 58%),
    repeating-linear-gradient(180deg, rgba(138,230,221,0.042) 0 1px, transparent 1px 46px);
  background-attachment:fixed,fixed,fixed;
  color:var(--qx-ink);
  font-family:var(--qx-sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-weight:800;line-height:1.18;letter-spacing:-0.01em;color:var(--qx-ink)}
h1{font-size:clamp(30px,4.6vw,46px)}
h2{font-size:clamp(24px,3vw,32px)}
h3{font-size:clamp(18px,2vw,22px)}
h4{font-size:16px;letter-spacing:0}
strong,b{font-weight:700}
small{font-size:0.82em}
code,kbd,samp{font-family:var(--qx-mono);font-size:0.9em}

:where(a,button,summary,[tabindex]):focus-visible{
  outline:2px solid var(--qx-cyan);
  outline-offset:3px;
  border-radius:6px;
}
.qx-footer :where(a,button):focus-visible{outline-color:var(--qx-teal-dark)}

::selection{background:var(--qx-cyan);color:#04231F}

/* ---------- 4. 跳转主内容 ---------- */
.qx-skip{
  position:fixed;
  top:10px;left:10px;
  z-index:140;
  display:inline-block;
  padding:10px 18px;
  border-radius:999px;
  background:var(--qx-amber);
  color:#23180A;
  font-weight:700;
  font-size:14px;
  text-decoration:none;
  transform:translateY(-180%);
  transition:transform .22s ease;
}
.qx-skip:focus,
.qx-skip:focus-visible{transform:translateY(0)}

/* ---------- 5. 阅读进度 ---------- */
.qx-progress{
  position:fixed;
  top:0;left:0;right:0;
  height:2px;
  z-index:130;
  background:rgba(47,212,198,0.12);
  pointer-events:none;
}
.qx-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:var(--qx-cyan);
  box-shadow:0 0 12px rgba(47,212,198,0.85);
  transition:width .1s linear;
}

/* ---------- 6. 悬浮胶囊头部 ---------- */
.qx-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  padding:14px var(--qx-gutter) 0;
  pointer-events:none;
  transition:padding .28s ease;
}
.qx-header__inner{
  pointer-events:auto;
  position:relative;
  max-width:var(--qx-wrap);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:14px;
  padding:9px 10px 9px 14px;
  border-radius:999px;
  background:var(--qx-glass);
  border:1px solid rgba(47,212,198,0.24);
  box-shadow:0 14px 38px rgba(3,12,20,0.5), inset 0 1px 0 rgba(138,230,221,0.12);
  -webkit-backdrop-filter:blur(15px) saturate(145%);
  backdrop-filter:blur(15px) saturate(145%);
  transition:padding .28s ease, background .28s ease, border-radius .28s ease;
}
.qx-header[data-scrolled="true"]{padding-top:8px}
.qx-header[data-scrolled="true"] .qx-header__inner{padding:5px 8px 5px 10px;background:var(--qx-glass-strong)}

/* 品牌浮岛 */
.qx-brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
  text-decoration:none;
  color:var(--qx-ink);
  flex:0 0 auto;
}
.qx-brand__mark{
  position:relative;
  width:34px;height:34px;
  flex:0 0 auto;
  border-radius:11px;
  background:linear-gradient(150deg, rgba(47,212,198,0.95), rgba(47,212,198,0.22));
  border:1px solid rgba(138,230,221,0.55);
  box-shadow:inset 0 0 0 1px rgba(4,35,31,0.25), 0 0 16px rgba(47,212,198,0.25);
  transition:width .28s ease, height .28s ease, border-radius .28s ease;
}
.qx-brand__mark::before{
  content:"";
  position:absolute;
  top:50%;left:50%;
  width:13px;height:13px;
  margin:-6.5px 0 0 -6.5px;
  border-radius:50%;
  border:2px solid #062730;
  border-top-color:transparent;
  transform:rotate(-38deg);
}
.qx-brand__mark::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  width:3px;height:3px;
  margin:-1.5px 0 0 -1.5px;
  border-radius:50%;
  background:#062730;
}
.qx-header[data-scrolled="true"] .qx-brand__mark{width:28px;height:28px;border-radius:9px}
.qx-brand__text{display:flex;flex-direction:column;min-width:0;line-height:1.15}
.qx-brand__name{font-size:16px;font-weight:800;letter-spacing:0.04em;white-space:nowrap}
.qx-brand__desc{
  font-family:var(--qx-mono);
  font-size:10px;
  letter-spacing:0.06em;
  color:var(--qx-muted);
  white-space:nowrap;
  margin-top:3px;
}
.qx-header__hint{
  display:none;
  font-family:var(--qx-mono);
  font-size:10.5px;
  letter-spacing:0.08em;
  color:rgba(154,176,189,0.85);
  white-space:nowrap;
  padding-left:14px;
  margin-left:2px;
  border-left:1px solid rgba(47,212,198,0.25);
}

/* 导航 */
.qx-nav{margin-left:auto;min-width:0}
.qx-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
}
.qx-nav__link{
  display:inline-block;
  padding:8px 12px;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  color:var(--qx-muted);
  text-decoration:none;
  white-space:nowrap;
  transition:color .18s ease, background .18s ease, box-shadow .18s ease;
}
.qx-nav__link:hover{color:var(--qx-cyan-soft);background:rgba(47,212,198,0.1)}
.qx-nav__link[aria-current="page"]{
  color:var(--qx-cyan-soft);
  background:rgba(47,212,198,0.14);
  box-shadow:inset 0 0 0 1px rgba(47,212,198,0.45);
  font-weight:700;
}
.qx-nav__cta-item{margin-left:8px}
.qx-nav__cta{font-size:13.5px;padding:10px 18px}

/* 移动导航按钮 */
.qx-nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  margin-left:auto;
  padding:9px 14px 9px 12px;
  border-radius:999px;
  border:1px solid rgba(47,212,198,0.38);
  background:rgba(47,212,198,0.08);
  color:var(--qx-cyan-soft);
  font-family:var(--qx-mono);
  font-size:11.5px;
  letter-spacing:0.12em;
  cursor:pointer;
  transition:background .18s ease, color .18s ease, border-color .18s ease;
}
.qx-nav-toggle:hover{background:rgba(47,212,198,0.18);color:var(--qx-ink)}
.qx-nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:3px;width:16px;height:12px}
.qx-nav-toggle__bars span{
  display:block;
  height:2px;
  width:100%;
  border-radius:2px;
  background:currentColor;
  transition:transform .22s ease, opacity .18s ease;
}
.qx-nav-toggle[aria-expanded="true"] .qx-nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.qx-nav-toggle[aria-expanded="true"] .qx-nav-toggle__bars span:nth-child(2){opacity:0}
.qx-nav-toggle[aria-expanded="true"] .qx-nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- 7. 布局骨架 ---------- */
.qx-container{
  width:100%;
  max-width:var(--qx-wrap);
  margin-inline:auto;
  padding-inline:var(--qx-gutter);
}
.qx-section{padding-block:clamp(44px,6.5vw,88px)}
.qx-section--tight{padding-block:clamp(28px,4vw,52px)}
.qx-split{
  display:grid;
  grid-template-columns:minmax(200px,3fr) minmax(0,9fr);
  gap:clamp(22px,3.4vw,44px);
  align-items:start;
}
.qx-grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.qx-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.qx-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.qx-grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.qx-grid--auto{grid-template-columns:repeat(auto-fit,minmax(238px,1fr))}

/* ---------- 8. 文字层级 ---------- */
.qx-display{
  font-size:clamp(36px,6.6vw,74px);
  line-height:1.03;
  letter-spacing:-0.03em;
  font-weight:900;
}
.qx-lede{
  font-size:clamp(15px,1.6vw,17px);
  line-height:1.8;
  color:var(--qx-muted);
  max-width:54ch;
}
.qx-eyebrow{
  display:inline-block;
  font-family:var(--qx-mono);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:0.28em;
  text-transform:uppercase;
  color:var(--qx-cyan-soft);
}
.qx-annot{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-family:var(--qx-mono);
  font-size:12px;
  letter-spacing:0.3em;
  text-transform:uppercase;
  color:rgba(154,176,189,0.9);
  white-space:nowrap;
}
.qx-rule{
  display:flex;
  align-items:center;
  gap:14px;
  margin:0 0 26px;
  font-family:var(--qx-mono);
  font-size:11.5px;
  letter-spacing:0.2em;
  text-transform:uppercase;
  color:var(--qx-muted);
}
.qx-rule::after{
  content:"";
  flex:1 1 auto;
  height:1px;
  background:repeating-linear-gradient(90deg, rgba(47,212,198,0.55) 0 10px, transparent 10px 17px);
}
.qx-prose{max-width:68ch;font-size:16px;line-height:1.75;color:var(--qx-ink)}
.qx-prose p{margin:0 0 1em}
.qx-prose h2,.qx-prose h3{margin:1.4em 0 .55em}
.qx-prose ul,.qx-prose ol{margin:0 0 1em;padding-left:1.25em}
.qx-prose ul{list-style:square}
.qx-prose ol{list-style:decimal}
.qx-prose li{margin:.35em 0}
.qx-prose a{color:var(--qx-cyan-soft);text-decoration:underline;text-underline-offset:3px}
.qx-prose :where(code){color:var(--qx-amber);background:rgba(47,212,198,0.1);padding:1px 6px;border-radius:5px}

/* ---------- 9. 面包屑 ---------- */
.qx-breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-family:var(--qx-mono);
  letter-spacing:0.04em;
  color:var(--qx-muted);
}
.qx-breadcrumb li{display:flex;align-items:center;gap:8px}
.qx-breadcrumb li + li::before{content:"/";color:rgba(154,176,189,0.45)}
.qx-breadcrumb a{color:var(--qx-cyan-soft);text-decoration:none}
.qx-breadcrumb a:hover{text-decoration:underline;text-underline-offset:3px}
.qx-breadcrumb [aria-current="page"]{color:var(--qx-ink)}

/* ---------- 10. 按钮 / 标签 ---------- */
.qx-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-family:var(--qx-sans);
  font-size:14px;
  font-weight:700;
  line-height:1.1;
  letter-spacing:0.02em;
  text-decoration:none;
  cursor:pointer;
  transition:background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.qx-btn:active{transform:translateY(1px)}
.qx-btn--amber{background:var(--qx-amber);color:#23180A;border-color:rgba(0,0,0,0.08)}
.qx-btn--amber:hover{background:#FFC75E}
.qx-btn--cyan{background:var(--qx-cyan);color:#04231F}
.qx-btn--cyan:hover{background:var(--qx-cyan-soft)}
.qx-btn--ghost{background:transparent;color:var(--qx-cyan-soft);border-color:rgba(47,212,198,0.45)}
.qx-btn--ghost:hover{background:rgba(47,212,198,0.12);color:var(--qx-ink)}
.qx-btn--paper{background:var(--qx-ink-dark);color:var(--qx-cream);border-color:rgba(18,35,46,0.9)}
.qx-btn--paper:hover{background:#1C3542}

.qx-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 9px;
  border-radius:6px;
  border:1px solid rgba(138,230,221,0.32);
  font-family:var(--qx-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--qx-cyan-soft);
  white-space:nowrap;
}
.qx-tag--amber{border-color:rgba(242,180,65,0.45);color:var(--qx-amber)}
.qx-tag--coral{border-color:rgba(242,99,75,0.45);color:var(--qx-coral)}
.qx-tag--ok{border-color:rgba(87,199,133,0.45);color:var(--qx-ok)}

/* ---------- 11. 卡片 / 纸面 ---------- */
.qx-card{
  position:relative;
  padding:clamp(18px,2.4vw,26px);
  border-radius:var(--qx-r-md);
  background:var(--qx-panel);
  border:1px solid rgba(47,212,198,0.16);
  color:var(--qx-ink);
}
.qx-card--glass{
  background:var(--qx-glass);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
  border-color:rgba(47,212,198,0.26);
}
.qx-card--paper{
  background:var(--qx-cream);
  color:var(--qx-ink-dark);
  border-color:var(--qx-paper-line);
}
.qx-card--paper h2,.qx-card--paper h3,.qx-card--paper h4{color:var(--qx-ink-dark)}
.qx-card > :last-child{margin-bottom:0}

.qx-paper{
  background:var(--qx-cream);
  color:var(--qx-ink-dark);
  border:1px solid var(--qx-paper-line);
  border-radius:var(--qx-r-lg);
  padding:clamp(20px,3vw,34px);
  box-shadow:0 16px 40px rgba(2,10,18,0.32);
}
.qx-paper h2,.qx-paper h3,.qx-paper h4{color:var(--qx-ink-dark)}
.qx-paper a{color:var(--qx-teal-dark);text-underline-offset:3px}

/* ---------- 12. 数字锚点 ---------- */
.qx-stat{display:flex;flex-direction:column;gap:6px}
.qx-stat__num{
  font-family:var(--qx-mono);
  font-weight:600;
  font-size:clamp(34px,4.8vw,62px);
  line-height:1;
  letter-spacing:-0.02em;
  color:var(--qx-amber);
  font-variant-numeric:tabular-nums;
}
.qx-stat__num--cyan{color:var(--qx-cyan)}
.qx-stat__label{
  font-size:12.5px;
  letter-spacing:0.1em;
  color:var(--qx-muted);
  font-family:var(--qx-mono);
  text-transform:uppercase;
}

/* ---------- 13. 表格 ---------- */
.qx-table{
  width:100%;
  font-size:14.5px;
  border-collapse:collapse;
  color:var(--qx-ink-dark);
}
.qx-table caption{
  caption-side:top;
  text-align:left;
  font-family:var(--qx-mono);
  font-size:11.5px;
  letter-spacing:0.2em;
  text-transform:uppercase;
  color:var(--qx-ink-soft);
  padding-bottom:10px;
}
.qx-table th,.qx-table td{
  padding:12px 14px;
  text-align:left;
  border-bottom:1px solid var(--qx-paper-line);
  vertical-align:top;
}
.qx-table thead th{
  background:rgba(18,35,46,0.06);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:0.08em;
  white-space:nowrap;
}
.qx-table tbody tr:hover{background:rgba(47,212,198,0.1)}
.qx-table td:first-child{font-weight:700}
.qx-table--dark{color:var(--qx-ink)}
.qx-table--dark th,.qx-table--dark td{border-bottom-color:rgba(47,212,198,0.18)}
.qx-table--dark thead th{background:rgba(47,212,198,0.1);color:var(--qx-cyan-soft)}
.qx-table--dark tbody tr:hover{background:rgba(47,212,198,0.08)}

/* ---------- 14. 步骤导航（滚动高亮） ---------- */
.qx-steps{
  position:sticky;
  top:126px;
  display:grid;
  gap:2px;
  font-size:13.5px;
}
.qx-steps__link{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:9px 12px;
  border-left:2px solid rgba(47,212,198,0.18);
  color:var(--qx-muted);
  text-decoration:none;
  transition:color .18s ease, border-color .18s ease, background .18s ease;
}
.qx-steps__link:hover{color:var(--qx-ink);border-left-color:rgba(47,212,198,0.5)}
.qx-steps__link[aria-current="true"]{
  color:var(--qx-ink);
  border-left-color:var(--qx-cyan);
  background:rgba(47,212,198,0.09);
  font-weight:700;
}
.qx-steps__num{
  font-family:var(--qx-mono);
  font-size:11px;
  color:var(--qx-cyan);
  opacity:0.85;
}

/* ---------- 15. 时间线 / 日志 ---------- */
.qx-timeline{
  position:relative;
  padding-left:22px;
}
.qx-timeline::before{
  content:"";
  position:absolute;
  left:5px;top:8px;bottom:8px;
  width:1px;
  background:rgba(47,212,198,0.32);
}
.qx-timeline > li{position:relative;padding-bottom:22px}
.qx-timeline > li::before{
  content:"";
  position:absolute;
  left:-21px;top:9px;
  width:9px;height:9px;
  border-radius:50%;
  background:var(--qx-deep);
  border:2px solid var(--qx-cyan);
}
.qx-timeline > li:last-child{padding-bottom:0}

.qx-log{display:grid;gap:0}
.qx-log__item{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:8px 16px;
  padding:16px 0;
  border-bottom:1px dashed rgba(47,212,198,0.22);
}
.qx-log__item:last-child{border-bottom:0}
.qx-log__item h3{font-size:16px}
.qx-log__meta{
  font-family:var(--qx-mono);
  font-size:11.5px;
  letter-spacing:0.1em;
  color:var(--qx-muted);
  white-space:nowrap;
}

/* ---------- 16. 折叠问答 ---------- */
.qx-fold{
  border:1px solid rgba(47,212,198,0.2);
  border-radius:var(--qx-r-md);
  background:var(--qx-panel);
  overflow:hidden;
}
.qx-fold + .qx-fold{margin-top:10px}
.qx-fold summary{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:14px;
  padding:15px 18px;
  font-size:15.5px;
  font-weight:700;
  color:var(--qx-ink);
  cursor:pointer;
  transition:background .18s ease;
}
.qx-fold summary:hover{background:rgba(47,212,198,0.08)}
.qx-fold summary::after{
  content:"+";
  flex:0 0 auto;
  font-family:var(--qx-mono);
  font-size:16px;
  line-height:1.4;
  color:var(--qx-cyan);
}
.qx-fold[open] summary::after{content:"–"}
.qx-fold__body{
  padding:0 18px 18px;
  font-size:15px;
  line-height:1.75;
  color:var(--qx-muted);
}
.qx-fold__body > :last-child{margin-bottom:0}

/* ---------- 17. 图片容器基础规则 ---------- */
.qx-media{
  position:relative;
  overflow:hidden;
  width:100%;
  aspect-ratio:16/9;
  border-radius:var(--qx-r-md);
  border:1px solid rgba(47,212,198,0.18);
  background:
    repeating-linear-gradient(135deg, rgba(47,212,198,0.08) 0 1px, transparent 1px 12px),
    var(--qx-panel);
}
.qx-media > img,
.qx-media > svg,
.qx-media > video,
.qx-media > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.qx-media--wide{aspect-ratio:21/9}
.qx-media--square{aspect-ratio:1/1}
.qx-media--tall{aspect-ratio:4/5}
.qx-media__label{
  position:absolute;
  left:12px;bottom:12px;
  padding:5px 10px;
  border-radius:6px;
  background:rgba(8,24,38,0.78);
  border:1px solid rgba(47,212,198,0.35);
  font-family:var(--qx-mono);
  font-size:11px;
  letter-spacing:0.1em;
  color:var(--qx-cyan-soft);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}

/* ---------- 18. 返回顶部（浮动） ---------- */
.qx-top{
  position:fixed;
  right:clamp(14px,3vw,28px);
  bottom:clamp(14px,3vw,28px);
  z-index:110;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 16px;
  border-radius:999px;
  background:var(--qx-glass-strong);
  border:1px solid rgba(47,212,198,0.38);
  color:var(--qx-cyan-soft);
  font-family:var(--qx-mono);
  font-size:11.5px;
  letter-spacing:0.1em;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .22s ease, transform .22s ease, visibility .22s, background .18s ease;
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.qx-top[data-visible="true"]{opacity:1;visibility:visible;transform:none}
.qx-top:hover{background:rgba(47,212,198,0.18);color:var(--qx-ink)}

/* ---------- 19. 显现动画 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(10px);
  transition:opacity .45s ease, transform .45s ease;
  will-change:opacity, transform;
}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 20. 页脚（奶油纸面） ---------- */
.qx-footer{
  position:relative;
  margin-top:clamp(40px,6vw,80px);
  background:var(--qx-cream);
  color:var(--qx-ink-dark);
  border-top:1px solid var(--qx-paper-line);
}
.qx-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:7px;
  background:repeating-linear-gradient(90deg, rgba(18,35,46,0.4) 0 1px, transparent 1px 26px);
  opacity:0.5;
}
.qx-footer__inner{
  max-width:var(--qx-wrap);
  margin-inline:auto;
  padding:clamp(40px,6vw,76px) var(--qx-gutter) clamp(24px,3vw,34px);
  display:grid;
  grid-template-columns:minmax(240px,1fr) minmax(0,1.55fr);
  gap:clamp(28px,4.5vw,60px);
}
.qx-footer__brand{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.qx-footer__mark{
  font-size:clamp(22px,3vw,30px);
  font-weight:900;
  letter-spacing:0.06em;
  line-height:1.1;
  color:var(--qx-ink-dark);
}
.qx-footer__mark::after{
  content:"";
  display:inline-block;
  width:7px;height:7px;
  margin-left:9px;
  border-radius:50%;
  background:var(--qx-coral);
  vertical-align:0.28em;
}
.qx-footer__line{
  font-size:15px;
  font-weight:500;
  color:var(--qx-ink-mid);
  max-width:30ch;
  line-height:1.7;
}
.qx-footer__note{
  font-size:13px;
  line-height:1.75;
  color:var(--qx-ink-soft);
  max-width:36ch;
}
.qx-footer__top{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:4px;
  padding:9px 16px;
  border-radius:999px;
  border:1px solid #C6B9A4;
  background:transparent;
  color:var(--qx-ink-dark);
  font-family:var(--qx-mono);
  font-size:11.5px;
  letter-spacing:0.1em;
  cursor:pointer;
  transition:background .18s ease, border-color .18s ease, color .18s ease;
}
.qx-footer__top:hover{background:#E7DCC8;border-color:#A8987E;color:#0A1820}

.qx-footer__nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,3vw,36px);
}
.qx-footer__col{min-width:0}
.qx-footer__title{
  margin:0 0 12px;
  font-family:var(--qx-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:0.2em;
  text-transform:uppercase;
  color:#6B7A83;
}
.qx-footer__list{display:grid;gap:9px}
.qx-footer__list a{
  font-size:14.5px;
  color:var(--qx-ink-dark);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s ease, border-color .18s ease;
}
.qx-footer__list a:hover{color:var(--qx-teal-dark);border-bottom-color:rgba(14,122,114,0.5)}

.qx-footer__contact{
  grid-column:1 / -1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 28px;
  padding-top:22px;
  border-top:1px dashed #C6B9A4;
}
.qx-footer__contact-item{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:8px;
  font-family:var(--qx-mono);
  font-size:12.5px;
  color:var(--qx-ink-mid);
  letter-spacing:0.02em;
}
.qx-footer__contact-item span{
  font-family:var(--qx-sans);
  font-size:11px;
  letter-spacing:0.16em;
  text-transform:uppercase;
  color:#7A8890;
}
.qx-footer__contact .qx-btn{margin-left:auto}

.qx-footer__base{
  grid-column:1 / -1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding-top:18px;
  border-top:1px solid var(--qx-paper-line);
}
.qx-footer__legal{
  font-family:var(--qx-mono);
  font-size:12px;
  letter-spacing:0.02em;
  color:var(--qx-ink-soft);
}
.qx-footer__links{display:flex;flex-wrap:wrap;gap:16px}
.qx-footer__links a{
  font-size:12.5px;
  color:var(--qx-ink-mid);
  text-decoration:none;
}
.qx-footer__links a:hover{color:var(--qx-teal-dark);text-decoration:underline;text-underline-offset:3px}

/* ---------- 21. 响应式 ---------- */
@media (min-width:1320px){
  .qx-header__hint{display:block}
}

@media (max-width:1100px){
  .qx-nav__link{padding:8px 10px;font-size:13.5px}
  .qx-nav__cta{padding:9px 14px;font-size:13px}
}

@media (max-width:980px){
  body{padding-top:100px}
  html{scroll-padding-top:96px}

  .qx-header__inner{
    flex-wrap:wrap;
    border-radius:26px;
    padding:9px 10px 9px 12px;
  }
  .qx-nav-toggle{display:inline-flex}
  .qx-nav{
    display:none;
    margin-left:0;
    position:absolute;
    left:0;right:0;
    top:calc(100% + 10px);
    padding:12px;
    border-radius:20px;
    background:var(--qx-glass-strong);
    border:1px solid rgba(47,212,198,0.26);
    box-shadow:var(--qx-shadow);
    -webkit-backdrop-filter:blur(16px) saturate(150%);
    backdrop-filter:blur(16px) saturate(150%);
  }
  .qx-nav[data-open="true"],
  .qx-header[data-open="true"] .qx-nav{display:block}
  .qx-nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .qx-nav__link{display:block;padding:12px 14px;border-radius:12px;font-size:15px}
  .qx-nav__cta-item{margin:8px 0 2px}
  .qx-nav__cta{width:100%;padding:12px 16px;font-size:14px}

  .qx-split{grid-template-columns:1fr}
  .qx-steps{position:static;display:flex;flex-wrap:wrap;gap:6px;font-size:13px}
  .qx-steps__link{border-left:0;border:1px solid rgba(47,212,198,0.22);border-radius:999px;padding:7px 12px}
  .qx-steps__link[aria-current="true"]{border-color:var(--qx-cyan);background:rgba(47,212,198,0.12)}
  .qx-grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .qx-footer__inner{grid-template-columns:1fr}
  .qx-footer__nav{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media (max-width:720px){
  body{padding-top:92px}
  body{font-size:15px}
  .qx-brand__desc{display:none}
  .qx-grid--2,.qx-grid--3{grid-template-columns:1fr}
  .qx-footer__nav{grid-template-columns:1fr 1fr;gap:22px}
  .qx-footer__contact{flex-direction:column;align-items:flex-start;gap:10px}
  .qx-footer__contact .qx-btn{margin-left:0}
  .qx-footer__base{flex-direction:column;align-items:flex-start}
  .qx-log__item{grid-template-columns:1fr}
  .qx-table{font-size:13.5px}
  .qx-table th,.qx-table td{padding:10px 10px}
}

@media (max-width:460px){
  .qx-footer__nav{grid-template-columns:1fr}
  .qx-nav-toggle__label{display:none}
  .qx-btn{width:100%}
  .qx-btn.qx-nav__cta{width:100%}
}

/* ---------- 22. 减少动效 ---------- */
@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;
  }
  [data-reveal]{opacity:1;transform:none}
  .qx-progress__bar{transition:none}
}