/* ============ 1. Reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,picture{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse;border-spacing:0}
summary{display:list-item}
::selection{background:rgba(95,242,193,.28);color:#04121B}

/* ============ 2. Tokens ============ */
:root{
  --ink-900:#07111F;
  --ink-800:#0D1B2E;
  --ink-700:#132844;
  --line:#1D3A5F;
  --line-soft:rgba(29,58,95,.55);
  --line-hair:rgba(29,58,95,.38);
  --mint:#5FF2C1;
  --mint-soft:#9BFFDF;
  --mint-wash:rgba(95,242,193,.08);
  --mint-wash-2:rgba(95,242,193,.16);
  --amber:#F5B84B;
  --amber-soft:#FFD27A;
  --amber-wash:rgba(245,184,75,.10);
  --text:#E8F1F7;
  --text-body:#D8E6EF;
  --muted:#9FB3C8;
  --radius:10px;
  --radius-sm:6px;
  --shadow-sm:0 1px 0 rgba(255,255,255,.03),0 12px 26px -20px rgba(0,0,0,.92);
  --shadow-md:0 28px 56px -36px rgba(0,0,0,.95);
  --wrap:1240px;
  --gutter:clamp(16px,4vw,32px);
  --header-h:116px;
  --font-display:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Songti SC","Source Han Serif SC","Noto Serif CJK SC",Georgia,"Times New Roman",serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

/* ============ 3. Base ============ */
html{
  background-color:var(--ink-900);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}
body{
  min-height:100vh;
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.78;
  letter-spacing:.01em;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(1100px 620px at 84% -14%,rgba(95,242,193,.11),transparent 62%),
    radial-gradient(760px 520px at 4% 2%,rgba(19,40,68,.85),transparent 72%),
    linear-gradient(180deg,#07111F 0%,#081524 46%,#07111F 100%);
  background-attachment:fixed;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.22;
  color:var(--text);
}
h1{font-size:clamp(1.9rem,4.2vw,3.05rem)}
h2{font-size:clamp(1.38rem,2.6vw,2rem)}
h3{font-size:clamp(1.08rem,1.7vw,1.28rem);letter-spacing:-.01em}
h4{font-size:1rem;letter-spacing:0}
p{max-width:76ch}
b,strong{color:var(--text);font-weight:700}

/* ============ 4. Utilities ============ */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(34px,5.4vw,68px)}
.page-head{padding-block:clamp(26px,4vw,46px) clamp(20px,3vw,30px);border-bottom:1px solid var(--line)}
.page-head h1{margin-top:12px}
.lede{font-size:clamp(1rem,1.5vw,1.09rem);line-height:1.85;color:var(--muted)}
.muted{color:var(--muted)}
.mono{font-family:var(--font-mono);font-size:.78em;letter-spacing:.06em;color:var(--muted)}
.serif{font-family:var(--font-serif);letter-spacing:.02em}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--mint);
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--mint);opacity:.7}
.jump-target{scroll-margin-top:calc(var(--header-h) + 20px)}
.band-rule{
  display:block;height:5px;width:100%;
  background:linear-gradient(90deg,var(--mint) 0%,rgba(95,242,193,.22) 34%,rgba(245,184,75,.7) 68%,rgba(245,184,75,.14) 100%);
}
.prose{max-width:72ch;color:var(--text-body);font-size:1rem;line-height:1.85}
.prose p+p{margin-top:1em}
.prose h2{margin-top:1.7em;margin-bottom:.55em}
.prose h3{margin-top:1.3em;margin-bottom:.45em}
.prose a{color:var(--mint);border-bottom:1px solid rgba(95,242,193,.4)}
.prose a:hover{color:var(--mint-soft);border-bottom-color:rgba(159,255,223,.7)}

/* ============ 5. Focus & buttons ============ */
:focus-visible{outline:2px solid var(--mint-soft);outline-offset:3px;border-radius:3px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-family:var(--font-display);font-weight:700;font-size:.92rem;letter-spacing:.01em;
  color:var(--text);background:rgba(19,40,68,.6);
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:hover{border-color:rgba(95,242,193,.55);background:var(--mint-wash);color:var(--mint-soft);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--amber{
  background:linear-gradient(180deg,#F5B84B,#DFA236);color:#08131F;
  border-color:rgba(255,210,122,.72);
  box-shadow:0 12px 24px -18px rgba(245,184,75,.95);
}
.btn--amber:hover{background:linear-gradient(180deg,#FFD27A,#F5B84B);color:#06101B;border-color:var(--amber-soft)}
.btn--ghost{background:transparent;border-color:rgba(95,242,193,.42);color:var(--mint)}
.btn--ghost:hover{background:var(--mint-wash);color:var(--mint-soft);border-color:rgba(155,255,223,.7)}
.btn--sm{padding:8px 14px;font-size:.82rem}
.btn--block{width:100%}
.skip-link{
  position:fixed;left:16px;top:-72px;z-index:200;
  padding:10px 18px;border-radius:var(--radius-sm);
  background:var(--mint);color:#04121B;
  font-family:var(--font-display);font-weight:800;font-size:.88rem;
  transition:top .18s ease;
}
.skip-link:focus,.skip-link:focus-visible{top:12px}

/* ============ 6. Header ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:linear-gradient(180deg,rgba(7,17,31,.98),rgba(10,22,38,.97));
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(6px);
}
.site-header::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,rgba(29,58,95,.45) 1px,transparent 1px);
  background-size:64px 100%;opacity:.32;
}
.header-rail{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-block:13px;
}
.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  position:relative;width:34px;height:34px;flex:0 0 auto;
  display:grid;place-items:center;
  border:1px solid rgba(95,242,193,.45);border-radius:9px;
  background:rgba(95,242,193,.08);
  transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
.brand-dot{
  width:9px;height:9px;border-radius:50%;
  background:var(--mint);box-shadow:0 0 14px rgba(95,242,193,.95);
}
.brand-mark::after{
  content:"";position:absolute;inset:6px;border:1px solid rgba(95,242,193,.22);
  border-radius:5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.18}
.brand-name{
  font-family:var(--font-display);font-weight:800;font-size:1rem;
  letter-spacing:-.01em;color:var(--text);
  transition:color .18s ease;
}
.brand-host{font-size:.66rem;letter-spacing:.07em;color:var(--muted)}
.brand:hover .brand-name{color:var(--mint-soft)}
.brand:hover .brand-mark{border-color:var(--mint);background:rgba(95,242,193,.15);box-shadow:0 0 0 3px rgba(95,242,193,.09)}
.rail-status{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.status-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 11px;border:1px solid var(--line-soft);border-radius:999px;
  background:rgba(13,27,46,.9);
  font-size:.74rem;color:var(--muted);white-space:nowrap;
}
.status-chip b{font-weight:700;color:inherit}
.status-chip--current{
  border-color:rgba(95,242,193,.45);color:var(--text);
  background:rgba(95,242,193,.09);
}
.status-chip--current b{color:var(--mint)}
.status-dot{
  width:6px;height:6px;border-radius:50%;flex:0 0 auto;
  background:var(--mint);box-shadow:0 0 0 3px rgba(95,242,193,.16);
}
.status-chip--current .status-dot{animation:dot-breathe 3.4s ease-in-out infinite}
.status-dot--amber{background:var(--amber);box-shadow:0 0 0 3px rgba(245,184,75,.16)}
@keyframes dot-breathe{
  0%,100%{box-shadow:0 0 0 3px rgba(95,242,193,.14);opacity:.85}
  50%{box-shadow:0 0 0 5px rgba(95,242,193,.05);opacity:1}
}
.rail-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:8px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-family:var(--font-mono);font-size:.76rem;letter-spacing:.1em;color:var(--muted);
  background:rgba(19,40,68,.65);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.nav-toggle:hover{color:var(--mint);border-color:rgba(95,242,193,.5);background:var(--mint-wash)}
.nav-toggle-bars{display:grid;gap:3px;width:14px}
.nav-toggle-bars span{display:block;height:1.5px;background:currentColor;transition:transform .2s ease}
.nav-toggle[aria-expanded="true"]{color:var(--mint);border-color:rgba(95,242,193,.5)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:first-child{transform:translateY(2.2px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:last-child{transform:translateY(-2.2px) rotate(-45deg)}
.site-nav{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  border-top:1px solid var(--line-hair);
  padding-block:6px;
}
.nav-list{display:flex;flex-wrap:wrap;gap:4px}
.nav-link{
  display:flex;align-items:baseline;gap:9px;
  padding:9px 14px;border:1px solid transparent;border-radius:var(--radius-sm);
  font-size:.9rem;color:var(--muted);
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.nav-index{font-size:.68em;letter-spacing:.12em;color:rgba(159,179,200,.62);transition:color .18s ease}
.nav-label{white-space:nowrap}
.nav-link:hover{color:var(--mint-soft);background:var(--mint-wash);border-color:rgba(95,242,193,.26)}
.nav-link:hover .nav-index{color:var(--mint)}
.nav-link[aria-current="page"]{
  color:var(--text);background:rgba(95,242,193,.11);
  border-color:rgba(95,242,193,.42);
  box-shadow:inset 0 -2px 0 var(--mint);
}
.nav-link[aria-current="page"] .nav-index{color:var(--mint)}
.nav-note{font-size:.68rem;letter-spacing:.1em;color:rgba(159,179,200,.72);white-space:nowrap}
.scroll-meter{position:relative;height:2px;background:rgba(29,58,95,.6);overflow:hidden}
.scroll-meter-bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--mint),var(--amber));
  box-shadow:0 0 12px rgba(95,242,193,.6);
}

/* ============ 7. Footer ============ */
.site-footer{
  position:relative;margin-top:clamp(48px,7vw,96px);
  background:linear-gradient(180deg,#07111F 0%,#0A1626 52%,#07111F 100%);
  border-top:1px solid var(--line);
}
.footer-top{
  display:grid;grid-template-columns:minmax(240px,1.05fr) minmax(0,2fr);
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(30px,4.6vw,54px);
  border-bottom:1px solid var(--line-hair);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.brand--footer .brand-mark{width:38px;height:38px}
.footer-lede{font-size:.94rem;line-height:1.8;color:var(--muted);max-width:36ch}
.footer-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(14px,2vw,24px)}
.footer-col-title{
  font-family:var(--font-mono);font-size:.7rem;font-weight:600;
  letter-spacing:.18em;text-transform:uppercase;color:var(--mint);
  margin-bottom:12px;
}
.footer-list li+li{margin-top:7px}
.footer-list a{
  display:inline-block;padding:2px 0;font-size:.9rem;color:var(--muted);
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer-list a:hover{color:var(--mint-soft);border-bottom-color:rgba(159,255,223,.55)}
.footer-contact{padding-block:clamp(24px,3.4vw,36px);border-bottom:1px solid var(--line-hair)}
.contact-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:14px;margin-top:18px;
}
.contact-card{
  padding:14px 16px;border:1px solid var(--line-soft);border-radius:var(--radius);
  background:rgba(19,40,68,.5);box-shadow:var(--shadow-sm);
  transition:border-color .18s ease,background .18s ease;
}
.contact-card:hover{border-color:rgba(95,242,193,.4);background:rgba(19,40,68,.72)}
.contact-key{
  display:block;font-family:var(--font-mono);font-size:.68rem;
  letter-spacing:.16em;text-transform:uppercase;color:rgba(159,179,200,.85);
}
.contact-val{
  display:block;margin-top:6px;font-size:.92rem;color:var(--text);
  word-break:break-word;
}
.footer-note{margin-top:16px;font-size:.82rem;color:var(--muted);max-width:62ch}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 24px;padding-block:20px;
}
.footer-legal{font-family:var(--font-mono);font-size:.73rem;letter-spacing:.04em;color:var(--muted);max-width:none}
.footer-legal-links{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:.8rem}
.footer-legal-links a{color:var(--muted);border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.footer-legal-links a:hover{color:var(--mint-soft);border-bottom-color:rgba(159,255,223,.5)}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border:1px solid var(--line);border-radius:999px;
  font-size:.8rem;color:var(--muted);background:rgba(13,27,46,.8);
  transition:color .18s ease,border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.to-top:hover{color:var(--mint);border-color:rgba(95,242,193,.5);background:var(--mint-wash)}
.to-top[data-visible]{color:var(--text);box-shadow:0 0 0 1px rgba(95,242,193,.16),0 14px 26px -22px #000}

/* ============ 8. Shared content components ============ */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;color:var(--muted);
}
.breadcrumbs li{display:flex;align-items:center;gap:10px}
.breadcrumbs li+li::before{content:"/";color:rgba(159,179,200,.42)}
.breadcrumbs a{color:var(--muted);border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.breadcrumbs a:hover{color:var(--mint);border-bottom-color:rgba(95,242,193,.5)}
.breadcrumbs [aria-current="page"]{color:var(--text)}
.chapter{
  display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;
  padding-top:12px;margin-bottom:20px;
  border-top:1px solid var(--line);
}
.chapter-num{
  font-family:var(--font-serif);font-size:clamp(1.5rem,3vw,2.3rem);
  line-height:1;color:rgba(95,242,193,.68);
}
.chapter-title{
  font-family:var(--font-mono);font-size:.72rem;font-weight:600;
  letter-spacing:.22em;text-transform:uppercase;color:var(--muted);
}
.grid{display:grid;gap:clamp(14px,2vw,22px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,1.55fr) minmax(0,1fr)}
.card{
  position:relative;padding:clamp(16px,2vw,24px);
  border:1px solid var(--line-soft);border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(19,40,68,.72),rgba(13,27,46,.72));
  box-shadow:var(--shadow-sm);
  transition:border-color .2s ease,transform .2s ease,background .2s ease;
}
.card:hover{border-color:rgba(95,242,193,.45);transform:translateY(-2px);background:linear-gradient(180deg,rgba(21,44,74,.82),rgba(13,27,46,.76))}
.card--tick::before{
  content:"";position:absolute;left:-1px;top:-1px;width:18px;height:18px;
  border-top:2px solid var(--mint);border-left:2px solid var(--mint);
  border-top-left-radius:var(--radius);
}
.card-title{font-family:var(--font-display);font-size:1.02rem;font-weight:800;letter-spacing:-.01em;margin-bottom:8px}
.card-text{font-size:.92rem;line-height:1.78;color:var(--muted);max-width:none}
.card-meta{margin-top:14px;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.09em;color:rgba(159,179,200,.82)}
.panel{
  padding:clamp(18px,2.4vw,28px);
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(13,27,46,.88);box-shadow:var(--shadow-md);
}
.panel--wash{background:linear-gradient(158deg,rgba(95,242,193,.09),rgba(13,27,46,.92) 56%)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border:1px solid var(--line);border-radius:999px;
  background:rgba(7,17,31,.6);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:var(--muted);
}
.tag--mint{border-color:rgba(95,242,193,.45);color:var(--mint)}
.tag--amber{border-color:rgba(245,184,75,.45);color:var(--amber)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.bullets{display:grid;gap:10px}
.bullets li{position:relative;padding-left:20px;font-size:.94rem;line-height:1.8;color:var(--muted)}
.bullets li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:1px;
  background:var(--mint);box-shadow:0 0 0 1px rgba(95,242,193,.18);
}
.table-wrap{
  overflow-x:auto;border:1px solid var(--line-soft);border-radius:var(--radius);
  background:rgba(13,27,46,.6);box-shadow:var(--shadow-sm);
}
.compare-table{width:100%;min-width:520px;font-size:.9rem}
.compare-table th,.compare-table td{
  padding:12px 16px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--line-hair);
}
.compare-table thead th{
  font-family:var(--font-mono);font-size:.7rem;font-weight:600;
  letter-spacing:.13em;text-transform:uppercase;color:var(--mint);
  background:rgba(19,40,68,.72);white-space:nowrap;
}
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table td{color:var(--muted)}
.compare-table td:first-child{color:var(--text);font-weight:600;white-space:nowrap}
.compare-table tbody tr{transition:background .16s ease}
.compare-table tbody tr:hover{background:rgba(95,242,193,.06)}
.acc{
  border:1px solid var(--line-soft);border-radius:var(--radius);
  background:rgba(13,27,46,.62);overflow:hidden;
  transition:border-color .18s ease;
}
.acc+.acc{margin-top:10px}
.acc:hover{border-color:rgba(95,242,193,.32)}
.acc-head{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:14px 18px;cursor:pointer;
  font-family:var(--font-display);font-weight:700;font-size:.95rem;color:var(--text);
  list-style:none;transition:background .18s ease,color .18s ease;
}
.acc-head::-webkit-details-marker{display:none}
.acc-head::after{content:"+";font-family:var(--font-mono);font-size:1.05rem;line-height:1;color:var(--mint)}
.acc[open]>.acc-head{background:rgba(95,242,193,.08);color:var(--mint-soft)}
.acc[open]>.acc-head::after{content:"–"}
.acc-body{padding:14px 18px 18px;border-top:1px solid var(--line-hair);font-size:.92rem;line-height:1.8;color:var(--muted)}
.anchor-nav{position:sticky;top:calc(var(--header-h) + 20px);display:grid;gap:2px;align-content:start}
.anchor-nav a{
  display:block;padding:8px 14px;
  border-left:1px solid var(--line);
  font-size:.86rem;color:var(--muted);
  transition:color .16s ease,border-color .16s ease,background .16s ease;
}
.anchor-nav a:hover{color:var(--mint-soft);border-left-color:var(--mint);background:rgba(95,242,193,.05)}
.anchor-nav a[aria-current="true"],
.anchor-nav a[aria-current="page"]{color:var(--mint);border-left-color:var(--mint);background:rgba(95,242,193,.07)}
.media-frame{
  position:relative;overflow:hidden;
  border:1px solid var(--line-soft);border-radius:var(--radius);
  aspect-ratio:16/10;
  background-color:#0A1626;
  background-image:
    linear-gradient(rgba(29,58,95,.5) 1px,transparent 1px),
    linear-gradient(90deg,rgba(29,58,95,.5) 1px,transparent 1px),
    radial-gradient(120% 100% at 78% 0%,rgba(95,242,193,.15),transparent 62%);
  background-size:100% 32px,32px 100%,100% 100%;
  box-shadow:inset 0 0 0 1px rgba(7,17,31,.65),var(--shadow-sm);
}
.media-frame img,.media-frame svg,.media-frame video{width:100%;height:100%;object-fit:cover;display:block}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--portrait{aspect-ratio:4/5}
.media-frame figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 14px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:var(--muted);
  background:linear-gradient(180deg,transparent,rgba(7,17,31,.94));
}

/* ============ 9. Reveal ============ */
@media (prefers-reduced-motion:no-preference){
  .reveal-ready [data-reveal]{
    opacity:0;transform:translateY(14px);
    transition:opacity .5s ease,transform .5s ease;
  }
  .reveal-ready [data-reveal].is-visible{opacity:1;transform:none}
}

/* ============ 10. Responsive ============ */
@media (max-width:1024px){
  .footer-top{grid-template-columns:minmax(0,1fr)}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
  .grid--split{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:880px){
  :root{--header-h:66px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    display:none;flex-direction:column;align-items:stretch;gap:12px;
    padding-block:0 16px;border-top:1px solid var(--line-hair);
  }
  .site-nav[data-open]{display:flex}
  .header-rail[data-open] .brand-name{color:var(--mint-soft)}
  .nav-list{flex-direction:column;gap:2px;width:100%}
  .nav-link{padding:12px 12px;font-size:.94rem;border-radius:8px}
  .nav-note{font-size:.66rem;letter-spacing:.08em;padding-left:2px}
  .anchor-nav{position:static}
}
@media (max-width:860px){
  .grid--2,.grid--3,.grid--split{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:640px){
  .rail-status .status-chip:not(.status-chip--current){display:none}
  .brand-host{display:none}
  .header-rail{padding-block:11px;gap:12px}
  .footer-base{flex-direction:column;align-items:flex-start;gap:14px}
  .site-nav{padding-inline:var(--gutter)}
}
@media (max-width:560px){
  .rail-actions .btn--amber{display:none}
  .contact-grid{grid-template-columns:minmax(0,1fr)}
  .footer-nav{grid-template-columns:minmax(0,1fr)}
  .compare-table{min-width:440px}
}

/* ============ 11. Reduced motion ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .card:hover,.btn:hover{transform:none}
}