/* ============ 1. reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,address{margin:0}
ul[class],ol[class]{list-style:none;padding:0}
img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
address{font-style:normal}
[hidden]{display:none !important}

/* ============ 2. 变量与页面底色 ============ */
:root{
  --ink:#07130F;
  --ink-2:#0C211A;
  --turf:#17362A;
  --cyan:#38F2D0;
  --mist:#7FD9C9;
  --orange:#FF7A2F;
  --white:#F4FBF7;
  --fog:#C9D8D2;
  --paper:#EDF5F1;
  --paper-ink:#0B1F18;
  --glass:rgba(56,242,208,.10);
  --line:rgba(56,242,208,.22);
  --line-strong:rgba(56,242,208,.45);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --shell:1240px;
  --gutter:clamp(16px,4vw,44px);
  --cut:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  --turf-stripes:repeating-linear-gradient(90deg,rgba(23,54,42,.55) 0 2px,rgba(23,54,42,0) 2px 44px);
}

body{
  min-height:100vh;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.55;
  color:var(--fog);
  background-color:var(--ink);
  background-image:
    radial-gradient(1200px 620px at 12% -12%,rgba(56,242,208,.10),transparent 62%),
    radial-gradient(900px 520px at 88% -4%,rgba(255,122,47,.08),transparent 66%),
    repeating-linear-gradient(45deg,rgba(23,54,42,.42) 0 3px,rgba(23,54,42,0) 3px 40px);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:var(--cyan);color:var(--ink)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:1px}

.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}

/* ============ 3. 排版 ============ */
.display-title{
  font-family:var(--serif);
  font-weight:700;
  font-size:clamp(2.6rem,7vw,5.6rem);
  line-height:1.02;
  letter-spacing:-.02em;
  color:var(--white);
}
.section-title{
  font-family:var(--sans);
  font-weight:800;
  font-size:clamp(1.4rem,2.4vw,2.2rem);
  line-height:1.16;
  letter-spacing:-.01em;
  color:var(--white);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.55em;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--cyan);flex:none}
.lede{font-size:clamp(15px,1.3vw,17px);line-height:1.6;color:var(--fog);max-width:56ch}
.prose{max-width:68ch;font-size:16px;line-height:1.7;color:var(--fog)}
.prose > * + *{margin-top:.8em}
.prose h2,.prose h3{color:var(--white);font-weight:700;line-height:1.25;margin-top:1.6em}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(56,242,208,.4)}
.prose strong{color:var(--white)}

/* ============ 4. 区块与栅格 ============ */
.section{position:relative;padding-block:clamp(44px,7vw,96px)}
.section--turf{background-image:var(--turf-stripes)}
.section--panel{background:var(--ink-2);border-block:1px solid var(--line)}
.section--paper{background:var(--paper);color:var(--paper-ink)}
.section--paper .section-title,.section--paper .display-title{color:var(--paper-ink)}
.section--paper .lede,.section--paper .prose{color:#1C3A31}
.section--paper .eyebrow{color:#0B6B58}
.section--paper .eyebrow::before{background:#0B6B58}

.layout-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(14px,2vw,28px)}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}

.diagonal-rule{
  height:clamp(18px,3.4vw,44px);
  background:linear-gradient(90deg,var(--turf),rgba(23,54,42,0));
  border-top:1px solid var(--line);
  clip-path:polygon(0 0,100% 0,100% 34%,0 100%);
}

/* ============ 5. 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.78em 1.3em;
  font-family:var(--sans);
  font-weight:700;
  font-size:.9rem;
  letter-spacing:.02em;
  color:var(--cyan);
  background:transparent;
  border:1px solid var(--line-strong);
  clip-path:var(--cut);
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn:hover{background:rgba(56,242,208,.14);transform:translateY(-1px)}
.btn--cyan{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}
.btn--cyan:hover{background:#57ffe0;color:var(--ink)}
.btn--signal{color:var(--orange);border-color:rgba(255,122,47,.7)}
.btn--signal:hover{background:rgba(255,122,47,.14)}
.btn--ghost{color:var(--white);border-color:rgba(201,216,210,.32)}
.btn--ghost:hover{background:rgba(201,216,210,.12)}
.btn--block{display:flex;width:100%}

/* ============ 6. 面包屑 ============ */
.breadcrumb{font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--mist)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__link{color:var(--fog);border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.breadcrumb__link:hover{color:var(--cyan);border-bottom-color:var(--line-strong)}
.breadcrumb__link[aria-current="page"]{color:var(--cyan);border-bottom-color:transparent}
.breadcrumb__sep{color:rgba(127,217,201,.5)}

/* ============ 7. 通用内容组件 ============ */
.card{
  position:relative;
  padding:clamp(16px,2vw,24px);
  background:linear-gradient(158deg,rgba(12,33,26,.96),rgba(7,19,15,.98));
  border:1px solid var(--line);
  clip-path:var(--cut);
  transition:border-color .24s ease,transform .24s ease;
}
.card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.card__title{font-size:1.05rem;font-weight:700;line-height:1.3;color:var(--white)}
.card__meta{display:block;margin-bottom:.55em;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mist)}
.card__body{margin-top:.5em;font-size:.92rem;line-height:1.6;color:var(--fog)}

.glass-panel{
  padding:clamp(16px,2.4vw,28px);
  background:var(--glass);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  clip-path:var(--cut);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.4em;
  padding:.28em .55em;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--mist);
  border:1px solid var(--line);
  white-space:nowrap;
}
.tag--cyan{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.tag--orange{border-color:rgba(255,122,47,.7);color:var(--orange)}
.tag--ghost{color:var(--fog);border-color:rgba(201,216,210,.3)}

.data-figure{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  font-size:clamp(1.4rem,3vw,2.2rem);
  line-height:1.05;
  letter-spacing:-.02em;
  color:var(--cyan);
  white-space:nowrap;
}
.data-figure--lg{font-size:clamp(2.2rem,6vw,4rem)}

/* 战术条：可横向滑动 */
.tactical-strip{position:relative;overflow:hidden}
.tactical-strip__track{
  display:flex;
  gap:12px;
  padding-bottom:14px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
  scrollbar-color:var(--line-strong) transparent;
}
.tactical-strip__track::-webkit-scrollbar{height:6px}
.tactical-strip__track::-webkit-scrollbar-thumb{background:var(--line-strong)}
.tactical-strip__track::-webkit-scrollbar-track{background:rgba(56,242,208,.08)}
.tactical-item{
  flex:0 0 clamp(180px,26vw,260px);
  scroll-snap-align:start;
  display:block;
  padding:14px 16px;
  background:linear-gradient(170deg,rgba(23,54,42,.7),rgba(7,19,15,.9));
  border:1px solid var(--line);
  clip-path:var(--cut);
  transition:border-color .2s ease,background .2s ease;
}
.tactical-item:hover,.tactical-item:focus-visible{border-color:var(--cyan);background:linear-gradient(170deg,rgba(56,242,208,.16),rgba(7,19,15,.92))}
.tactical-item__num{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--cyan);margin-bottom:8px}
.tactical-item__label{display:block;font-weight:700;font-size:.95rem;color:var(--white);line-height:1.35}

/* 图像容器基础规则（页面阶段放 img 或占位） */
.img-frame{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--line);
  background:
    radial-gradient(120% 100% at 20% 0%,rgba(56,242,208,.16),transparent 60%),
    linear-gradient(150deg,var(--turf),rgba(7,19,15,.98));
}
.img-frame--angle{clip-path:polygon(0 0,100% 0,100% 86%,88% 100%,0 100%)}
.img-frame__media{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  background:linear-gradient(160deg,rgba(23,54,42,.9),rgba(7,19,15,.95));
}
.img-frame__media img{width:100%;height:100%;object-fit:cover;filter:saturate(.96) contrast(1.06)}
.img-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,19,15,.12),rgba(7,19,15,.62));
  pointer-events:none;
}
.img-frame__caption{
  position:relative;
  z-index:2;
  display:block;
  padding:10px 14px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
  border-top:1px solid var(--line);
  background:rgba(7,19,15,.72);
}

/* 分段切换器 */
.segmented{display:grid;gap:16px}
.segmented__list{display:flex;flex-wrap:wrap;gap:8px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.segmented__btn{
  padding:.5em .9em;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--mist);
  border:1px solid var(--line);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.segmented__btn:hover{color:var(--white);border-color:var(--line-strong)}
.segmented__btn[aria-selected="true"]{background:var(--cyan);border-color:var(--cyan);color:var(--ink);font-weight:700}
.segmented__panel{padding-top:2px}

/* 显现 */
.js [data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .32s ease,transform .32s ease}
.js [data-reveal].is-visible{opacity:1;transform:none}

/* ============ 8. 头部 ============ */
.skip-link{
  position:fixed;
  left:12px;
  top:-72px;
  z-index:200;
  padding:.62em 1.05em;
  font-weight:700;
  font-size:.9rem;
  color:var(--ink);
  background:var(--cyan);
  transition:top .2s ease;
}
.skip-link:focus{top:12px}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,19,15,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header[data-condensed]{background:rgba(7,19,15,.98);box-shadow:0 12px 32px rgba(0,0,0,.45)}

.masthead{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:clamp(10px,2.4vw,28px);
  padding-block:clamp(12px,1.8vw,20px);
  transition:padding .25s ease;
}
.site-header[data-condensed] .masthead{padding-block:8px}

.masthead__meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--mist);
  min-width:0;
}
.masthead__round{display:inline-flex;align-items:baseline;gap:4px;white-space:nowrap}
.masthead__round b{font-size:15px;color:var(--white);font-variant-numeric:tabular-nums}
.status-dot{
  flex:none;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 0 4px rgba(255,122,47,.16);
  animation:statusPulse 2.6s ease-in-out infinite;
}
@keyframes statusPulse{0%,100%{box-shadow:0 0 0 4px rgba(255,122,47,.16)}50%{box-shadow:0 0 0 7px rgba(255,122,47,.05)}}
.masthead__status{color:var(--fog);letter-spacing:.1em;white-space:nowrap}

.masthead__brand{
  grid-column:2;
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  font-family:var(--serif);
  font-weight:700;
  font-size:clamp(1.5rem,3.4vw,2.5rem);
  line-height:1;
  letter-spacing:-.02em;
  color:var(--white);
  text-align:center;
  transition:color .2s ease;
}
.masthead__brand:hover{color:var(--cyan)}
.masthead__brand-sub{
  font-family:var(--mono);
  font-size:10px;
  font-weight:400;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--mist);
}

.masthead__aside{grid-column:3;display:flex;align-items:center;justify-content:flex-end;gap:clamp(8px,1.4vw,14px)}
.masthead__quick{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:.5em .9em;
  font-size:.82rem;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--cyan);
  border:1px solid var(--line-strong);
  clip-path:var(--cut);
  transition:background .2s ease,color .2s ease;
}
.masthead__quick:hover,.masthead__quick:focus-visible{background:var(--cyan);color:var(--ink)}
.masthead__quick-mark{font-family:var(--mono);font-size:.9em;line-height:1}
.masthead__quick-text{white-space:nowrap}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:.5em .65em;
  color:var(--white);
  border:1px solid var(--line);
}
.nav-toggle__bars{position:relative;display:inline-block;width:18px;height:2px;background:currentColor;transition:background .2s ease}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
  transition:transform .24s ease,top .24s ease;
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}
.site-header[data-open] .nav-toggle__bars{background:transparent}
.site-header[data-open] .nav-toggle__bars::before{top:0;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle__bars::after{top:0;transform:rotate(-45deg)}
.nav-toggle__label{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase}

.nav-rail{
  border-top:1px solid var(--line);
  background:linear-gradient(90deg,rgba(23,54,42,.6),rgba(7,19,15,0) 62%);
}
.nav-list{display:flex;justify-content:center;flex-wrap:wrap;gap:clamp(6px,2.2vw,30px)}
.nav-item{display:flex}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:12px 2px;
  font-weight:700;
  font-size:.9rem;
  letter-spacing:.06em;
  color:var(--fog);
  transition:color .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:3px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--white)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

/* ============ 9. 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,110px);
  padding-bottom:clamp(28px,5vw,44px);
  background:var(--ink-2);
  background-image:repeating-linear-gradient(45deg,rgba(23,54,42,.4) 0 3px,rgba(23,54,42,0) 3px 42px);
  border-top:1px solid var(--line);
  color:var(--fog);
}
.footer-ticker{
  background:linear-gradient(90deg,rgba(56,242,208,.18),rgba(56,242,208,.03) 68%,rgba(56,242,208,0));
  border-bottom:1px solid var(--line);
}
.footer-ticker__inner{display:flex;align-items:center;gap:14px;padding-block:12px;overflow:hidden}
.footer-ticker__label{
  flex:none;
  padding:.34em .62em;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--ink);
  background:var(--cyan);
}
.footer-ticker__text{
  font-size:.85rem;
  color:var(--mist);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.footer-grid{
  display:grid;
  grid-template-columns:1.3fr .8fr .8fr 1.2fr;
  gap:clamp(20px,4vw,44px);
  padding-block:clamp(30px,5vw,54px);
}
.footer-col{min-width:0}
.footer-heading{
  margin-bottom:14px;
  font-family:var(--mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-brand__name{
  font-family:var(--serif);
  font-weight:700;
  font-size:clamp(1.35rem,2.6vw,1.9rem);
  letter-spacing:-.01em;
  color:var(--white);
  line-height:1.1;
}
.footer-brand__note{margin-top:10px;max-width:32ch;font-size:.86rem;line-height:1.6;color:var(--mist)}
.footer-meta{
  display:flex;
  flex-wrap:wrap;
  gap:6px 16px;
  margin-top:14px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--mist);
}
.footer-links{display:grid;gap:9px}
.footer-link{
  display:inline-block;
  font-size:.9rem;
  color:var(--fog);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-link:hover,.footer-link:focus-visible{color:var(--cyan);border-bottom-color:var(--line-strong)}
.footer-contact{display:grid;gap:10px}
.footer-contact__item{font-size:.88rem;line-height:1.55;color:var(--fog);word-break:break-word}
.footer-contact__label{
  display:block;
  margin-bottom:2px;
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 24px;
  padding-top:18px;
  border-top:1px solid rgba(56,242,208,.16);
}
.footer-legal__text{font-family:var(--mono);font-size:11px;letter-spacing:.04em;color:var(--mist)}

/* 悬浮常见说明徽章 */
.faq-badge{
  position:fixed;
  right:clamp(12px,2.4vw,26px);
  bottom:clamp(12px,2.4vw,26px);
  z-index:90;
  display:grid;
  justify-items:end;
  gap:10px;
}
.faq-badge__button{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:.72em 1.05em;
  font-weight:700;
  font-size:.82rem;
  letter-spacing:.05em;
  color:var(--cyan);
  background:rgba(7,19,15,.94);
  border:1px solid var(--cyan);
  box-shadow:0 10px 30px rgba(0,0,0,.5);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:background .2s ease,color .2s ease,width .2s ease,height .2s ease;
}
.faq-badge__button:hover{background:var(--cyan);color:var(--ink)}
.faq-badge__dot{width:7px;height:7px;border-radius:50%;background:currentColor;box-shadow:0 0 0 4px rgba(56,242,208,.2);flex:none}
.faq-badge__label{white-space:nowrap}
.faq-badge[data-compact] .faq-badge__label{display:none}
.faq-badge[data-compact] .faq-badge__button{width:48px;height:48px;padding:0;justify-content:center;border-radius:50%}
.faq-badge__panel{
  display:none;
  width:min(320px,calc(100vw - 28px));
  padding:16px;
  background:rgba(12,33,26,.98);
  border:1px solid var(--line-strong);
  box-shadow:0 18px 44px rgba(0,0,0,.58);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.faq-badge[data-open] .faq-badge__panel{display:block}
.faq-badge__title{
  margin-bottom:10px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--cyan);
}
.faq-badge__list{display:grid;gap:2px;margin-bottom:12px}
.faq-badge__item{
  display:block;
  padding:9px 8px;
  font-size:.86rem;
  color:var(--fog);
  border-bottom:1px solid rgba(56,242,208,.12);
  transition:color .2s ease,background .2s ease;
}
.faq-badge__item:hover,.faq-badge__item:focus-visible{color:var(--cyan);background:rgba(56,242,208,.08)}

/* ============ 10. 响应式 ============ */
@media (max-width:980px){
  .span-4,.span-5,.span-7,.span-8{grid-column:span 12}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col--brand{grid-column:span 2}
}
@media (max-width:860px){
  .nav-toggle{display:inline-flex}
  .masthead{grid-template-columns:minmax(0,1fr) auto;row-gap:4px}
  .masthead__meta{grid-column:1;grid-row:1;font-size:10px;letter-spacing:.1em}
  .masthead__brand{grid-column:1;grid-row:2;align-items:flex-start;text-align:left;font-size:clamp(1.4rem,7vw,1.95rem)}
  .masthead__brand-sub{font-size:9px;letter-spacing:.24em}
  .masthead__aside{grid-column:2;grid-row:1 / span 2}
  .masthead__quick{padding:.4em;width:38px;height:38px;justify-content:center}
  .masthead__quick-text{display:none}
  .masthead__quick-mark{font-size:1.05rem}

  .nav-rail{
    display:none;
    border-top:1px solid var(--line);
    background:rgba(12,33,26,.98);
  }
  .site-header[data-open] .nav-rail{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{display:block}
  .nav-link{padding:14px 2px;border-bottom:1px solid rgba(56,242,208,.14);font-size:.95rem}
  .nav-link::after{bottom:-1px;height:2px;transform-origin:left center}
  .nav-link[aria-current="page"]{padding-left:10px}

  .footer-ticker__inner{flex-wrap:wrap;gap:8px}
  .footer-ticker__text{white-space:normal;font-size:.8rem}
  .footer-legal{flex-direction:column}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-col--brand{grid-column:span 1}
  .section{padding-block:clamp(32px,9vw,52px)}
  .faq-badge{gap:8px}
  .faq-badge__button{font-size:.78rem}
}

/* ============ 11. 动效降级 ============ */
@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 [data-reveal]{opacity:1 !important;transform:none !important}
  .status-dot{animation:none}
}